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Siemens Pacemaker UM344-2 User's Manual

1. 6 4 6 2 Field Calibration Connections 6 4 6 3 RTD Ohm Current Source Calibration Set 6 8 6 4 TC mV Input Accuracy Check and Calibration Set 6 9 7 1 Model 344 Electronics Module Block 7 2 8 1 Typical and RTD Thermowell Assemblies without Heads 8 3 8 2 Typical RTD Thermowell Assembly with a 8 3 8 3 Model 344 8 6 September 1995 CONTENTS SECTION AND TITLE 4 1 Operating Mode and Network Type 4 2 Thermocouple and Extension Grade Wire Characteristics 3 n 6 1 Self Diagnostics Troubleshooting 6 2 Message No Transmitter Found 6 3 Message Communication Error 6 4 Message Field Device Malfunction 6 5 Symptom Zero or Low Output 6 6 Symptom High Output Output Display Code Choices LIST OF TABLES 6 7 Symptom Output Current Fixed Below Scale at Approximately 3 84 mA 6 8 Symptom Output Current Fixed Above Scale at Approximately 21 8 mA 6 9 Symptom Erratic Output 8 1 Model 344T Model Designation 8 2 General Accessories 8 3 Thermal Sensors 8 4 Replacement Thermocouples and RTDs for 344T Temperature Elements 8 5 Thermocouple Wire 8 6 Sensors Type Range Span and Accuracy CHANGES FOR ISSUE 1
2. gt MXC 250 Non Hazardous Hazardous T UT Location Location 96e i ge See Note 6 N N Note 2 io oo UNS N Controller N Mz x f M Lwd f Other 1 Mo EE 27 7 4 Device Note 1 aa ae M oe x X 22 2 Lo Signal Test N System Power a M CX Supply _ ale 1 Supply and T Nerea di me SSMO RETE e 4i Return Barriers i OQ Shown Above See Note 4 j Network for Hazardous Locations X X erminals Notes 1 The System Power Supply is shown separate from the host input device In practice it may be part of the host input device The host input device can be either a HART or non HART signaling device a Primary Master or a Secondary Master 2 Network resistance equals the sum of the barrier resistances and the current sense resistor Minimum value 250 Ohms maximum value 1100 Ohms 3 Connect the MXC a Secondary Master to the loop only in the non hazardous location The MXC is a non polar device 4 Interconnect all cable shields and ground only at the power source 5 For access to Model 344 terminals remove shorter end cap 6 Maximum loop cable length calculated by formula in Section 4 3 5 0286651 September 1995 4 5 INSTALLATION UM344 2 FIGURE 4 1 Point To Point Network Analog Mo
3. 4 3 2 3 3 1 Amalog eet eerta e eaae 4 4 423532 Digital tens 4 4 43 4 Power Supply Requirements etr ete bade eo ope ie 4 8 4 3 4 1 Point To Point NetwoEk eerte eene shen te eene ene eor rei oen Poen 4 9 2 34 2 Mult Drop Network conto RR Ere E REESE 4 9 4 3 5 Cable Capacitance and Maximum 4 10 4 3 5 Cable Capacitan Ce eo e mme PERPE UO T are ERG rens 4 10 4 3 5 2 Maximum Cable Length Calculation eee 4 10 September 1995 CONTENTS UM344 2 SECTION AND TITLE PAGE 4 3 6 Network eene tenentes retener nnne 4 11 4 3 7 Safety Barriers ccc deter 4 12 4 3 8 Connection of Miscellaneous Hardware sess 4 12 4 3 9 Determine Sensor Cable 4 13 4 3 10 2 Wire RTD Accuracy Limitations 4 14 4 3 11 Shielding and 4 15 44 MECHANICAL INSTALLATION 2 5 netten eoru rper HS svadnasnneavenrsouaiohensozentens 4 16 Mounto 4 16 4 4 2 Flat Surface Mountirig ede ene terree gh ge hn eee creo regen heroe e 4 19 4 4 3 Dir
4. 2 2 2 3 Parameter MXC Model 344 2 9 3 1 Bench Test Connections Ee ee en to Ee anoo ena ea eei a reden 3 2 3 2 Typical Field Test 9 3 2 4 1 Point To Point Network Analog 4 5 4 2 Model 352 SLDC and Model 344 Connections Analog 4 6 4 3 Multi Drop Network Digital Mode rra 4 7 4 4 Supply Voltage versus Network Resistance 4 8 4 5 Dimensions Mounting Bracket for Model 344 4 17 4 6 Model 344 Mounting Configurations with Supplied 4 18 4 7 Transmitter To Process Mounting issiro iin aa i eiei ae a a i aea e ieee aia 4 21 4 8 Sensor Assembly o raae 4 22 4 9 Digital Meter Orientation and Mounting Hardware sss 4 24 4 10 Digital Meter Repositioning and enne 4 25 4 11 Conduit Drain and Explosion Proof Installations eese 4 27 4 12 Signal Loop Sensor MXC and Test Terminals eene 4 30 4 13 Model 344 Sensor Wiring 4 3 5 1 Model 344 Digital 9 4 32 6 1 Bench Calibration
5. Proporational Gain Integral Derivative Derivative Gain 06 Manual September 1995 APPENDIX A FUNCTION BLOCK DESCRIPTIONS Unique 8 character identification 16 character description of transmitter 32 character transmitter message Enter day month and year in register 24 bit Unsigned Integer 0 to 16777215 0 to 15 0 Analog Mode 1 to 15 Digital Mode HI LO Last Value Enable or Disable Setpoint Low or High On or Off On or Off Automatic or Manual No or Yes to 110 Turn Controller ON or OFF Select PID ID or PD Select Direct or Reverse Range from 0 01 to 100 0 Range from 0 01 to 1000 0 minutes repeat Range from 0 00 to 100 0 minutes Range from 1 00 to 30 0 Range from 0 0 to 100 096 A 9 APPENDIX A FUNCTION BLOCK DESCRIPTIONS Sensor Block Sensor Input Terminals Zero Span MV Lo Hi Meas Variables Units ON OFF Controller Related Blocks Output Block Signal Loop Terminals Alarm Comparator No 1 Alarm Comparator No 2 UM344 2 Descriptor Message Day Month Year User ID No Short Address Transmitter ID Block X02881S1 Setpoint Alarm 1 Setpoint Alarm 2 Alarm Status Operator Display Block Local Display Code Process Varia
6. 5 8 SLLLS eoidiise yc 5 9 5 1 1 9 End or Review Configuration cessere eene 5 9 5 1 2 Downloading A een entente ene 5 10 5 1 3 Local Transmitter 5 11 51 3 T Display eee eee Rena 5 12 5 1 3 2 Local Pushbutton Input 5 13 5 1 3 3 Local Pushbutton Damping Adjustment 5 15 5 1 3 4 Local Pushbutton AUTO MANUAL SETPOINT and VALVE Adjustments 5 16 5 1 4 Quick Access Key 5 19 35 2 OBP LINES OPERA TION iL osito emo btt 5 22 5 2 1 Using Off Line Operations to Access an 5 22 5 2 2 Using an Archive in On Line 5 24 6 0 CALIBRATION AND MAINTENANGCE sse eene eren nennen enne 6 1 61 CALIBRATION bere CERE UAE soy e ee REP Eee TR E CREE FERRE P Te e REPE e 6 1 6 1 1 Equipment 6 2 6 1 2 Transmitter Analog Output ener 6 2 6 1 2 1 Transmitter Normally Configured for Analog 2 00 6 2 6 1 2 2 Transmitter Normally Configured for Digital 00222 6 5 September 1995 UM344 2 CONTENTS SECTION AND TITLE PAG
7. 1 15 The Transmitter ID block contains ASCII strings that can be entered to aid in record keeping and identification of the transmitter These ASCII strings include an 8 character Tag a 16 character Descriptor and a 32 character Message In addition a date code and an 8 digit Device Serial Number that can be used to identify the transmitter can be entered Set the Short Address to 0 to place the transmitter in Analog or Point to Point mode Set the Address to 1 15 for Digital or Multidrop mode NOTE Each transmitter in a Multidrop network must have a unique address An analog mode transmitter should never be used in a Multidrop network A 4 OUTPUT BLOCK Failsafe Level 2 2 02 2 Lo Hi or Last Value The Output Block converts the internal 0 to 100 it receives to an output signal The input to the block represents either the actual Failsafe Level Process Variable when the transmitter is configured as a transmitter only or the valve signal when configured as a controller A 4 mA signal wll be output if in Digital mode The failsafe level is the value to which the transmitter output will go if an error is detected while the transmitter is performing its self diagnostic program This value may be set at Lo 4 mA Hi 2 20 mA or at the last value the transmitter recorded before entering failsafe mode A 2 September 1995 UM344 2 APPENDIX A FUNCTION BLOCK DESCRIPTIONS A 5 ALARM BLOCK Alarm scc e
8. ames ah eae oma maT gt l ID Controller 2 Controter f pucr lID L cc M 2 i The ID controller is an integral only controller which uses external feedback to establish integral action If the derivative time TD is set to 0 00 the derivative section is eliminated September 1995 UM344 2 APPENDIX A FUNCTION BLOCK DESCRIPTIONS The gain for this controller is fixed at a value of 1 00 While the displayed gain can be changed it will not affect the controller Equations AUTO when output O is connected to feedback F TDs 1 O PG P 1 S TD DG s 1 5 MANUAL O F Block Diagram ID Controller en ee ee ETE e ae TEE Seer a ee eee 1 pv a 1 l IDs Ly E S41 L f 9 1 phe 1 tput 241 22 u ae 0288050 9 FUNCTION BLOCK SUMMARY SENSOR INPUT BLOCK Input Type MV Millivolts eese Wide or Narrow RID iu st etes e PT100 ohm DIN amp US PT200 ohm DIN amp US PT500 ohm DIN amp US dI oe ete RE Re J K E T R S B N Olim ueneno Rieti te us Wide or Narrow teet fat ed catt Celsius Fahrenheit Rankine Kelvin MV Ohms SMV Range xd e LO and HI range valu
9. seen 6 22 6 3 4 Enclosure Thread 6 23 6 4 NON FIELD REPLACEABLE ITEMS 6 23 6 5 ASSEMBLY REMOVAL AND REPLACEMENT 2 6 24 6 5 1 Electronics Module Removal and 6 24 6 6 MAINTENANCE RECORDS 0 oe ceceessesncececeeeseeessecaceeceeeseesesnaaeaececeeeseeseuaaeeeeeeeseeeees 6 25 6 7 RECOMMENDED SPARE AND REPLACEMENT 2022220 6 25 6 8 SOFTWARE COMPATIBILITY 6 26 69 RETURN SHIPMEN T aed rias itte gene 6 26 70 CIRCUIT DESCRIPTION ee e eee e ie 7 1 5 E onnaa o 7 1 THEORY OF OPERATION epa 7 3 7 2 1 Thermocouple Millivolt 7 3 71 22 RTD OHMS TEN 7 3 72 3 Signal Conversion 7 4 7 2 4 Communication 7 4 8 0 MODEL DESIGNATION AND 8 22 2 2 2 2 0222 8 1 S I MODEL DESIGNATION ated 8 1 S2 ACCESSORIES hah rues eee o eee eret ERE e ERE 8 2 8 3 SPECIFIC ATIONS ey rore ete eet terris 8 5 8 3 1
10. IMPORTANT Save this User s Manual for installing configuring operating and servicing a Model 344 transmitter 1 1 SECTION CONTENTS Nine sections make up this Manual A brief description of each section follows Section 1 INTRODUCTION describes each section in this Manual and provides a brief description of the Model 344 Smart Temperature Transmitter line Section 2 XTC COMMUNICATOR MXC describes use of the MXC to test configure and calibrate a transmitter Section 3 INITIAL TRANSMITTER SETUP provides procedures to perform a bench test of the transmitter to ensure proper operation of all functions Start up configuration is described here If desired go to Section 5 to perform a complete configuration Section 4 INSTALLATION furnishes specific information for mechanical and electrical installation Section 5 ON LINE AND OFF LINE OPERATION describes on line and off line configuration and the use of the transmitter s zero and full scale pushbuttons Section 6 CALIBRATION AND MAINTENANCE provides calibration procedures for analog and digital modes It also furnishes preventive maintenance troubleshooting and assembly replacement procedures A spare and replacement parts list is provided at the back of this Manual Section 7 CIRCUIT DESCRIPTION contains an assembly level circuit description to support transmitter servicing September 1995 1 1 INTRODUCTION UM344 2 Section 8 MODEL DESIGNATION AND SPECIF
11. 7 Install HART communication filter when using a Model 77 771 750E or other high impedance coil type device The filter bypasses HART signals around the high Z device FIGURE 4 2a Model 344 Connections Controller Function Block ON Analog Mode USER S MANUAL ADDENDUM UMA344 2 2 Issue 1 March 1997 Ex N INSTALLATION CONDITION INVOLVED USER S MANUAL UM344 2 Issue 1 XTC Transmitters Series 344 Temperature Transmitters User s Manual ADDITIONAL MATERIAL The voltage at the loop terminals of a Model 344 installed in an area requiring an Ex N rating must be prevented from exceeding 42 Vdc This can be accomplished by A double wound mains transformer to BS3535 or equivalent An adequately rated zener diode An adequately rated semiconductor voltage regulator Powering the loop from a battery
12. August 1995 5 3 ON LINE AND OFF LINE OPERATION UM344 2 8 The Range screen shows the unit of measurement and the lower and upper range values LRV and URV currently configured Set the transmitter s temperature range corresponding to 4 and 20 mA See Section 8 for transmitter input ranges These values can be changed using either of two methods Tell or Show Values for URV and LRV entered in the following procedures are stored in the MXC Complete config uration and perform the download steps in Section 5 1 2 to send the configuration to a transmitter METHOD 1 The Tell MV LO 0 0000 1 Press EDIT F1 to display the screen for entering the ENTER MV LO Lower Range Value LRV SUIT 2 Type the desired value at the blinking cursor 3 Press either ENTER F4 to select the value or QUIT MV HI 100 00 ME ENTER MV HI 2 F3 to exit this selection without saving QUIT 4 The next screen displays the transmitter s Upper Range Value URV which is set as described above METHOD 2 The Show Method In this method the transmitter is ranged by applying actual URV mV 79 120 deg F and LRV sensor inputs 0 0000 TO 100 00 SET SET 1 Press SNSR INPT F2 in the Range screen LO HI QUIT ENTER The screen displays the On Line value for the actual temperature or MV units that the transmitter is reading 2 Apply the LRV sensor input to the transmitter 3 Press SET LO to set the
13. EIGHT PLACE MODEL NUMBER SEVEN PLACE MODEL NUMBER Basic Model Number Basic Model Number 344 Temperature Transmitter Controller 344 Temperature Output Service Transmitter Controller Integral Thermal Element 1 N No element supplied with connection head Yes element attached to a conduit entrance Output Indicator N Not Required 4 1 2 Digit Digital Smart Display Standard Options Not Required Special Features describe Mounting Bracket 1 2 Pipe Mount SS Hardware 2 Universal 2 Pipe Mount 316 SS Bracket Not Required Housing Aluminum 1 2 14 NPT Aluminum M20 x 1 5 2 Hazardous Area Classification 2 CSAAII DI NI Not Required W FM amp ABS Type Approved 344B NN N N 1 G Sample Model Number Transmitter Controller Reserved for Factory Use Not Required Output Indication N Not Required 1 Analog Linear 0 100 earlier units only 4 5 Digital Digital Analog 0 100 earlier units only 4 Special Features Not Required Yes Electrical Connection 1 2 14 NPT M20 x 1 5 2 Hazardous Area Classification 2 6 FM EP DI Non Approval 344B N NN 1 Sample Model Number 1 A Model 344T Thermal Element should be specified separately Shipping oversized integral thermal elements attached to a Model 344 is at Moore Products Co s discretion September 1995 8 1 MODEL DESIGNATION AND SPECIFICATIONS UM344 2 2 Not available with FM CSA Units 3 Tags The permanent tra
14. Extension Wires S Thread 52 M Union Probe Hex Thermowell Hex Extension Nipple Probe Junction Sensor See Notes Probe ii Stainless Steel or Inconel D 0282850 Exposed Junction Ungrounded Junction Grounded Junction Notes 1 Three styles of thermocouple probe junctions are shown 2 An RTD probe is a closed end tube only RTD sensors are not grounded FIGURE 4 8 Sensor Assembly 4 24 September 1995 UM344 2 INSTALLATION 4 4 4 Local Digital Meter Installation Repositioning and Removal Three procedures are provided in this section Refer to Figures 4 9 and 4 10 as necessary IMPORTANT Follow proper electronic circuit board handling procedures to avoid damage to the semiconductors by electrostatic discharge e Two procedures describe repositioning of an installed meter A is for rotating the meter 180 and B is for rotating the meter 90 clockwise or counterclockwise actually 78 To remove a meter perform procedure A steps 1 5 9 install a meter perform procedure C A Rotate Meter 180 1 Turn off power to transmitter and remove enclosure cap to access Digital Display 2 Snap wrist strap on wrist and connect ground clip to an unpainted area on the Transmitter or mounting bracket 3 Locate a short ribbon cable that connects the Electronics Module to the Digital Meter assembly at connector J1 typically Disconnect the connector at the Digital Meter asse
15. The HART protocol requires a network loop resistance between 2500 1100Q to support communications See Section 4 3 5 to determine resistance value IMPORTANT In a hazardous area installation connect the MXC on the safe side of the barrier between the current sense resistor and the barrier poem eee E ls landen pen 15239520 1 p i 271 oe Current Sense Resistor 250 to 1100Ohms x MXC MXC MXC panine a J TE ce oy Controller m NE ry 7 rd Record LO bb OE PI J Indicator y it or other E re es ee 2 X pecus Device m Nt of os Signdl Test N Z A 4 D 2 eee 2 D Notes x Model 344 M Terminals 1 Connect an MXC to any of the locations shown X0284981 Cx m d Pd 2 Connect the MXC only in a non hazardous area 2 6 September 1995 UM344 2 XTC COMMUNICATOR 2 4 POWER Six AA alkaline batteries are supplied with the MXC Remove 7 Battery the rear cover to access the battery compartment as shown in the figure Typical operating time of the MXC with new batteries and the back light off is approximately 80 hours with new batteries and the back light on approximately 30 hours 217 Batteries A Low Battery indicator Lg is displayed in the lower right corner of the LCD when about one half o
16. controller function block ON and short address set to 0 for analog mode operation This drawing Figure 4 2a amends the information in Section 4 Installation CONTROLLER MODE INSTALLATION WIRING UMA344 2 1 Network for Non Hazardous Locations HART Communication Filter L___ See Note 7 T 2 L Power Supply I P Device See Note 1 d See Note 1 w 2 Network E Junction i N Qty 2 IN y a I RN F a Optional Terminal Boards PA 88a for Two Splices Shield Senso 7 344 Negative Lead Terminals NG Terminals lt See Note 5 Notes 1 I P device examples are Transducer Model 77 771 772R or 773 and Valve Positioner Model 750E or 760E The can be either a HART or non HART signalling device a Primary Master or a Secondary Master The System Power Supply is shown as a separate device In practice it may be part of a network device 2 Network resistance equals the sum of any barrier resistances and the current sense resistor Minimum value 250 Ohms maximum value 1100 Ohms 3 Connect the MXC a Secondary Master to the loop only in the non hazardous location The MXC is a non polar device 4 Interconnect all cable shields and ground only at the power source 5 For access to Model 344 terminals remove shorter end cap X03013S1 6 Maximum loop cable length calculated by formula in Section 4 3 5
17. 2 ta E p SE 15 l BR eg G BES Loo xX T V ERIS X oo N 1 715 1 jm SF 09 i 2 1 m 2 ___ 2547 5 90 y o V5 i c I x 775 PB ji Pr vii SEO ell eu re Dew EN s ELS Hg i 1 fe Se 95 i 5 came OP TIER opem 5 71 7T MAUS u o it cm p D 7 T S xp E I 4 11 S ul QN TEE Duc P a remm RE hie od SE 22 ANS II Ss 7 N 1 ri 7 o OL u 2 Lr I VN o c d d IN 7 qI iO d Ss pu o gp 7 a oc OS SSS Lal o3 pz i b 3e S Nl 2 2 Ex gt di lt 1 J TEE 1 1 1 l Br t E wO j 41 D e E lui gt D 3 5 loz 5 8 56101 x gt E 125852 5964 oS 58550127852 o Soa nag September 1995 FIGURE 6 2 Field Calibration Connections 6 4 UM344 2 CALIBRATION AND MAINTENANCE 12 13 14 15 16 17 18 Read the ammeter If the output is within limits press QUIT and proceed
18. Constantan Chromel shiny metal Constantan dull metal Chromel non magnetic i Alumel magnetic Platinum amp 13 1 Rhodium d i Platinum amp 1096 Pure Platinum Platinum amp 30 Platinum with 0 6 Rhodium i Rhodium 3 Ohms to Milliampere Conversion connect the OHM OHM and OHM I leads as shown in Figure 4 13 detail E Ohms Input 4 Millivolt to Milliampere Conversion Connect the mV and mV leads as shown in Figure 4 13 detail F mV Input Inspect each connection for strands of wire that could short to an adjacent terminal for connection to correct terminal and for tightness of terminal screw Be certain that the shield braid is insulated from all terminals and the metal terminal enclosure 6 Reinstall enclosure cap Tighten cap to compress the internal O ring IMPORTANT Be certain that enclosure threads are coated with an anti seize compound and that the cap seal O ring is in place before installing a cap A typical compound is Never Seez by Emhart Bostik 4 34 September 1995 UM344 2 INSTALLATION 7 If one of the two electrical conduit entrances in the housing is not used it should be plugged Refer to the Transmitter s nameplate and Section 8 1 to determine whether entrance holes accept 2 14 NPT or M20 x 1 5 fittings Seal NPT fittings with TFE PTFE tape seal M20 fittings with a soft setting sealing compound rated for at least 105 C 221 F 4
19. PG 1 8 1 TD DG s 1 TIs MANUAL R F GE O F A 4 September 1995 UM344 2 APPENDIX A FUNCTION BLOCK DESCRIPTIONS Block Diagram PID Controller Ce EOS INPS 1 meo ID 31 25 41 NL DG gt e 4 ME Z N Output gt at 1 e a et a ES PD Controller leu On Off Controller Types PID PD ID Psa ae Reverse Direct Lo Controller Proportional Gain PID amp 0 01 to 100 0 RENE 0 01 to 1000 min repeat lon Outpuj Tire asser DU 0 01 to 100 0 2 Derivative Gain joe ceste duc pd utin 1 00 to 30 00 APRENDER 1 Manual Reset PD 0 0 to 100 0 Manual Reset Tracking PD No Yes The PD controller is a proportional only controller with manual reset which can be selected as tracking or non tracking The track function block will force the controller output to track the feedback and if manual reset tracking is selected the manual reset MR will also track the feedba
20. Screw the probe nipple into the union if present or into the thermowell If it is desired to have terminal compartment access from the same direction as the Sensor Assembly then screw an elbow plus close nipple plus coupling onto the probe nipple See Figure 4 7 Select one of the two conduit inlets and route the sensor leads extending from the probe into the terminal compartment of the transmitter Do not connect the wires Screw the transmitter onto the threads of the probe s nipple or elbow fitting if used Refer to Section 4 5 to connect the sensor wires to the appropriate terminals September 1995 WMA o Wall of Pipe or Process Th E ermowell Vessel Sensor Conduit for 2 2 Wire Loop ZThermowell NDS Wiring Model 344 Transmitter Insulation If Required WITHOUT DRAIN SEAL Wall of Pipe or Process vicia Thermowell Hex 0281850 Close Nipple hy Elbow ay insmowel Model 344 Transmitter Extension Nipple Insulation P If Required Terminal Compartment Conquit Side Conduit for Elbow D Wiring Drain MEN WITH DRAIN SEAL FIGURE 4 7 Transmitter To Process Mounting LLLLLLLLLLLLLLLLLLLLLILILLLLA 2 INSTALLATION UM344 2 v Sensor Probe gt Sheath Extension N Th id or Assembly 2 Element 1 2 NPT Nipple Screws into Transmitter Conduit Inlet Sensor Element 1 2
21. 24 AWG per foot 0 39 ohms L __ 14 8 feet or 7 4 feet for each lead 0 0262 ohms per foot A 0 3 offset error is caused by an extension lead wire 24 length of 2 23 feet As the calculations indicate extension lead wire added to a 2 wire RTD can cause serious offset error A 2 wire RTD should not be used without determining that the results are acceptable The effects of lead wire resistance are compensated for by the Transmitter when 3 and 4 wire RTDs are used 4 3 11 Shielding and Grounding The preferred method of grounding the loop cable shield is illustrated in Figures 4 1 4 2 and 4 3 The following guidelines represent proven grounding practices that will reduce magnetically coupled interference e Ground the cable shield at ONE point as shown e Preferably ground the cable shield at the Network power supply e When the cable shield is grounded at the power supply a The cable shield should remain open not connected at the Field Instrument Transmitter b The shields of both cables at a Network Junction should be spliced Alternatively connect both to a terminal in the Box or Panel provided that the terminal is isolated from ground e Point To Point Network Other permissible single point grounding schemes are a Thecable shield may be grounded at the Ground Connection in the signal terminal compartment of the transmitter s electronic housing It is recommended that a separate ground wire be run from t
22. 253 n ea OF B j Model344 Model344 Model344 i N j lt N i Sga Terminal yet EN Terminal EN Terminal Notes 1 The System Power Supply is shown separate from the host input device In practice it may be part of the host input device The host input device can either be a HART or non HART signaling device a Primary Master or Secondary Master 2 Network resistance equals the sum of the barrier resistances and the current sense resistor Minimum value 250 Ohms maximum value 1100 Ohms 3 A maximum of 15 transmitters may be connected All must be configured for digital mode 4 Connect the MXC a Secondary Master to the loop only in the non hazardous location The MXC is a non polar device 5 Interconnect all cable shields and ground only at the power source 6 For access to Model 344 terminals remove enclosure end cap 0286851 FIGURE 4 3 Multi Drop Network Digital Mode September 1995 4 7 INSTALLATION UM344 2 4 3 4 Power Supply Requirements A power supply is needed to power the Transmitter s The power supply can be separate stand alone supply capable of powering several Transmitters It can be mounted in control room or in the field Follow the power supply manufacturer s recommendations with regard to mounting and environmental considerations e Located in a controller such as a Primary Master or other station
23. F2 to continue with configuration and display the transmitter type See adjacent screen NOTE The EDIT ARCH F1 key is pressed to edit an archived configuration and will be discussed later Press CONT F4 to show the Status screen Select the state of the Write Protect mode enable disable by toggling the LAST OPTN F1 or NEXT OPTN F2 key NOTE Write Protect prevents changes to transmitter parameters and the transmitter will not accept a downloaded configuration Press SEL CONT to continue The MXC screen will display the Function Block menu Press SEL END F3 to end this session The MXC screen will display the Configuration Complete menu with options to quit configuration mode save the configuration review the configuration or download the configuration NOTE Most configuration screens show the option of ending configuration and going to this screen These choices are discussed in Section 5 1 1 9 Choose the function block to be configured Press either PREV F1 or NEXT F2 to scroll through the function blocks September 1995 UM344 2 ON LINE AND OFF LINE OPERATION 5 1 1 1 Sensor Input Block INPUT TYPE T C J THERMOCOUPLE LAST NEXT SEL OPTN OPTN END SEL CONT MEASURED VARIBLE UNITS deg F LAST NEXT SEL OPTN OPTN END SEL CONT RANGE deg F LO 0 0000 100 00 SEL CONT SNsR SEU EDIT INPUT END 7 NOTE Function blocks are in an easy to use forma
24. LOW 4 5 xg ctc 2 55 Wa ET a IG EE ES o O 5 zal 1 e 4 ul EE em I tc j It anys o eal 2 2 j o H S l IE xl Be o I a gt Cyt Tee lie P 22 1 Ae c 1 REM LEN 1 Me o 1 120 5 gt i 8 56A E I9 gozo a 8 Ena E 2 9 IS EG o0 1281 9 0 051 Ze 81 los loooco 265 51 a o lor onjoao September 1995 FIGURE 322 Typical Field Test Connections 3 2 UM344 2 3 2 ESTABLISHING COMMUNICATION SELECT FUNCTION FIND ARCH TEST XMTR FUNC MXC END SEARCH FOR WHAT TYPE OF TRANSMITTER ANA DIG SRCH LOG ITAL TAG END ENTER TAG TO SEARCH WITH a EN QUIT TER September 1995 INITIAL TRANSMITTER SET UP Connect the transmitter as shown in either Figure 3 1 or 3 2 Apply power to the loop Press and momentarily hold the MXC s ON key The first screen that will appear after the initial power up screens is the Main Menu shown adjacent Press FIND XMTR F1 to have the MXC initially establish communication with the Model 344 From the next screen select either Analog Digital or Search Tag to begin communication with the transmitter Read the following and then
25. Mechanical P eH pr GRUPPE eere etn 8 5 8 3 2 Functional and eene nnne 8 5 8 3 3 Two Wite Cablen ed e d re a e ERR SUR SENA R EE STARE 8 7 8 3 4 Sensor EESE SEES boven 8 8 8 3 5 Bnvironmiental uet e P Re Pe UEM Ee E 8 8 8 3 6 Hazardous Area 8 0 8 3 6 1 CSA Hazardous Locations Precautions eese eene 8 11 September 1995 CONTENTS UM344 2 SECTION AND TITLE PAGE 90 5 2555 9 1 5 5 5 5 5 5 5 5 gt gt gt gt September 1995 UM344 2 CONTENTS SECTION AND TITLE PAGE A 0 APPENDIX FUNCTION BLOCK 8 1 0 APPENDIX B HAZARDOUS AREA B 1 THIS MP e W 1 PARTS LIST LIST OF ILLUSTRATIONS FIGURE AND TITLE PAGE 1 1 Basic Model P 1 2 1 2 TerminalsConnect Ons 1 3 2 1 Moore XTC Communicator 2 2 2 2 Major MXC Menu 5
26. The input from the thermocouple is applied to a 2 pole filter which reduces RFI and 60 Hz noise The filter s output is fed to a high gain amplifier and applied to INPUT 1 of the A D Converter An amplified reference junction input from an Integrated Circuit Temperature Sensor is fed to INPUT 2 of the A D Converter The Sensor measures the temperature of the TC screw terminal and regulates the current at a rate of 1 microamp per degree Kelvin The Microcontroller uC periodically reads the Sensor signal and compensates the TC input for changes in ambient temperature UPSCALE DOWNSCALE indicates thermocouple burnout open circuit by driving the output to a high or low limit depending on the selected configuration parameter When the transmitter input is configured for a TC the RTD SEL output from the A D Converter goes logic low This turns on the P channel FET and turns off the CMOS Analog Switch disabling the 52 uA Current Sink used for RTD OHMS input The V BURNOUT output from the A D Converter either a plus or minus voltage depending on the upscale downscale choice passes through the FET and is converted to a trickle current If the TC opens the trickle current will charge the input filter in the appropriate direction and drive the perceived temperature to the high or low limit The input circuitry communicates with the microcontroller uC through three pulse transformers DATA CONTROL ISOLATION which provide isolation with minimum cur
27. potentiometer type sensor Millivolt values corresponding to Zero and Full Scale temperatures are applied to the transmitter and the indicated output checked for accuracy Narrow Wide Millivolt calibration consists of applying one low and one high millivolt signal to the transmitter and entering them into EPROM Narrow Millivolt Applicable to mV inputs between 11 00 to 26 00 millivolts including inputs from an R S T or B type thermocouple Wide Millivolt Applicable to mV inputs between 18 00 to 103 00 millivolts including inputs from a J K E or N type thermocouple 6 1 4 1 Thermocouple Millivolt Calibration Check 1 Connect test equipment to transmitter as shown in Figure 6 4 X0282781 2 of 2 250 we dm Bench Power pe N Supply a San ae pe 7 fs E i o DVM E ERRE 2 B 224 2 if 5 Model 344 Millivolt See X xn Terminals Source 2 L FIGURE 6 4 TC mV Input Accuracy Check and Calibration Set Up 6 10 September 1995 UM344 2 CALIBRATION AND MAINTENANCE 2 Determine millivolt values for thermocouple or mV input e Thermocouple Type Input Consult user supplied TC millivolt vs temperature table and record the millivolt values corresponding to the Zero and Full Scale temperatures e mV Type Input Consult user supplied data and record the mil
28. 344 Connections Analog Mode 4 6 September 1995 UM344 2 INSTALLATION Les _ Note 4 wa et a i Scop ee X MXC 250 Non Hazardous Hazardous quem See Location Location 2 peor ue Networ O45 ft Pe eee ee ee T T Primary N Ie Master NIE N A See Note 1 a gt an po ee PX Lu 4 2 1 oy System Power Supply Supply and i TEASE Return Barriers 1 EN Shown Above t See Note 5 NEM I oy 1 I oy of I oy of 1 po 4 po 4 ype eee Og Sy RO ON gee 4 NA See Notes and 6 tc DE Soo ond ees aan a PERC SRA Pe BEES 2 2 Loot qz RETRO SE queue NIS et 77 X d our x ms V 5N X Sighal Test Sigkal Test NOMS 2 Test N d nJ vnl SN w H en asd 2 56 2 pL
29. 4 12 and 20 mA If an Digital Meter is not installed verify current by connecting an ammeter to the transmitter s TEST terminals If the measured selected loop currents are significantly low in value or loop current cannot be set replace the Electronics Module See Section 6 5 2 If transmitter passes loop override test transmitter electronics are OK Continue troubleshooting 6 22 September 1995 UM344 2 CALIBRATION AND MAINTENANCE TABLE 6 5 Symptom Zero or Low Output Continued Loop Wiring Power Supply Check for 12 Vdc minimum across SIGNAL terminals in transmitter terminal compartment Check power supply output voltage for specified level 17 Vdc minimum 42 Vdc maximum Check power supply for blown fuse or tripped circuit breaker Check polarity of loop wiring Check that loop resistance is between 250Q and 11000 Check for loose or broken loop wiring at power supply terminals Supply Barriers if used junction boxes and transmitter terminal compartment Check for disconnected or broken Current Sense Resistor Check for short between cable shield and SIGNAL loop wire Check for accumulation of moisture in transmitter terminal compartment Check for the proper type of loop cable and for electrical interference between the loop cable and any adjacent cables in a cable tray or conduit Transmitter stuck in Loop Override Re enter Loop Override from MXC Main Menu and properly exit Loop Mode Override
30. A M TRANSFER Power Up Mode Automatic Only Power Up Valve CONTROLLER BLOCK Controller ON OFF Controller Type Action Prop Gain Time Integral Time Derivative Derivative Gain Manual Reset Manual Reset Track For more detailed information on these function blocks refer to Section 5 and Appendix A At this point check to be sure that the transmitter is reading the proper sensor input in the proper units 1 Set the sensor input to the transmitter to a known value either by adjusting the process variable to a field mounted transmitter or the simulated input to a bench test transmitter 2 With the On Line Menu displayed press the gray TRANS VAR s key on the MXC keypad to display the VIEW WHICH VARIABLES screen 3 Press one of the following keys depending upon controller activation Controller Block ON Press CONT F2 to display the controller variables P Process S Setpoint V Valve Controller Block OFF Press XMTR F1 to display the process variables M Measured Variable I Current mA September 1995 UM344 2 INITIAL TRANSMITTER SET UP P Process Variable 4 Check these Transmitter Variables to ensure the readings are correct 5 Press END F4 to return to the main menu September 1995 3 11 UM344 2 INSTALLATION 4 0 INSTALLATION This Section describes installation of a Model 344 Temperature Transmitter Topics include receipt of shipment installation considerations and mechanical
31. Capacitance to Ground 50 pF maximum Resistance to Ground MO minimum Impedance if Series Connected Less than 10Q e Impedance if Parallel Connected Greater than 50kQ maximum number of miscellaneous devices per Network is 16 The combined electrical characteristics may not exceed the following e Maximum capacitance to ground 800 pF e Minimum resistance to ground 62 5kQ e Maximum series impedance 1600 e Minimum parallel impedance 31250 4 3 9 Determine Sensor Cable Requirements If the Transmitter is mounted remotely from the sensor the wire characteristics of the extension cable between the sensor and Transmitter will be different for thermocouple inputs than for RTD ohm or millivolt type inputs A Thermocouple Sensor to Transmitter Extension Cable 1 Select extension grade or thermocouple grade wire of the same calibration as the thermocouple calibrations are T J E K R S N B THERMOCOUPLE GRADE Wire is made from same materials as thermocouple and subject to same limits of error as thermocouple e EXTENSION GRADE Noble and refractory thermocouple extension grade wire is made from inexpensive proprietary alloys that simulate the thermoelectric behavior of the actual thermocouple element over a limited range of temperatures Base metal T J K E thermocouple
32. Con Rankin Burnout Kelvin Millivolts mV input only Ohms Ohm input only Measured Variable Range Lo 999999 to 999999 Measured Variable Range 999999 to 999999 Damping Time Constant 22122 0 to 120 seconds Burnout Direction 1112 Upscale Downscale This function block allows the user to determine the range and the units in which the sensor will measure the sensor input Range and span limits are dictated by a transmitter s sensor Also included is a digital filter for removing process and sensor noise A 2 OPERATOR DISPLAY BLOCK Process Variable Units 4 Character ASCII Process Variable Range Lo 19999 to 19999 Process Variable Range 19999 to 19999 Process Variable Range Auto R range et et nitet Enable or Disable Display Code Local Display Code aero th rre Measured Variable Percent Process Variable Use this function block to set up Process Variable Ranges and Units to improve the understanding of the Measured Variable The Process Variable differs from the Measured Variable As stated in the previous function block description the Measured Variable in actual physical units such as ohms and the Process Variable can be shown in units that represent the actual process parameter being measured such as Temp
33. Mode TABLE 6 6 Symptom High Output POSSIBLE CAUSE CORRECTIVE ACTION Transmitter Electronics Failure Establish communications between the MXC and transmitter then check the STATUS of the transmitter If a FAILSAFE message is posted refer to Section 6 3 2 1 paragraph A for troubleshooting procedures If transmitter STATUS checks OK EXIT the Status screen to the On Line Menu and select LOOP OVRD loop override Verify the loop by setting the output current to 4 12 and 20 mA read at Digital Meter or ammeter connected to TEST terminals If selected loop currents are significantly out of tolerance as measured by the Ammeter or loop current cannot be set replace the Electronics Module See Section 6 5 2 If transmitter passes loop override test continue troubleshooting September 1995 6 23 CALIBRATION AND MAINTENANCE UM344 2 TABLE 6 7 Symptom Output Current Fixed Below Scale at Approximately 3 84 mA POSSIBLE CAUSE CORRECTIVE ACTION Loop supply voltage less than 12 Vdc at transmitter Replace power supply SIGNAL terminals Thermocouple Burnout if Downscale protection or Refer to Figure 4 13 and perform a standard open circuit thermocouple extension wire s open thermocouple check between transmitter terminals 1 and 3 Thermocouple wires have polarity re versed Consult thermocouple wire tables or Table 6 1 and determine color code for positive and negative wires Check wire connections at tran
34. ON LINE AND OFF LINE OPERATION 5 0 ON LINE AND OFF LINE OPERATION On line operation is any configuration or monitoring activity which involves direct communication with a transmitter When the controller function block is disabled the local pushbuttons may be used to configure range and damping When the controller is enabled the local pushbuttons may be used to display PROCESS VARIABLE PV SETPOINT SP and VALVE transfer control mode from AUTO A to MANUAL M and change or store SET POINT and VALVE settings The configuration may be edited remotely using an MXC a personal computer PC running XTC Configuration Software or another HART Primary or Secondary Master The MXC can also be used to monitor a transmitter s variables and to look at a transmitter s status Off line operation is any configuration activity that occurs without direct communication with a transmitter This includes using the MXC to create or edit a configuration and then to store that configuration in an MXC archive It also includes using a personal computer and XTC Configuration Software to create or edit and then store a configuration 5 1 ON LINE OPERATION The first part of this section contains the steps to configure and monitor a Model 344 from an MXC The latter part of this section describes configuring the transmitter using the local pushbuttons 5 1 1 Using the MXC for Configuration Each transmitter is shipped with default data stored in its
35. OPERATION A warning that the transmitter s configuration will change respond to the prompt A warning if the archive has a different tagname than the transmitter respond to the prompt Press END to return to the previous screen 5 31 ON LINE AND OFF LINE OPERATION 5 32 UM344 2 September 1995 UM344 2 CALIBRATION AND MAINTENANCE 6 0 CALIBRATION AND MAINTENANCE This section describes calibration preventive maintenance and troubleshooting The Maintenance section has preventive maintenance procedures that are employed to prevent conditions from occurring that would be detrimental to the reliability of the transmitter Should a malfunction occur troubleshooting procedures will assist in minimizing downtime This section also includes transmitter removal and replacement procedures recommended spare and replacement parts and an exploded view drawing with a parts list WARNING In Division 1 areas where an explosion proof rating is required remove power from the transmitter before removing the transmitter s end cap for access to the electrical terminal compartment The MXC is approved for use in non hazardous areas only 6 1 CALIBRATION A transmitter is calibrated at the factory and should not require field calibration Sections 6 1 2 and 6 1 3 describe field and bench calibration of a transmitter Transmitter calibration should be checked at least annually and the procedures in this section performed if out of t
36. Tool and Equipment Requirements The following tools and equipment are required for servicing e Set of Phillips flat blade and Torx Head screwdrivers e Service Kit containing wrist strap and conductive mat P N 15545 110 or equivalent for handling semiconductor components and circuit board assemblies e Digital Multimeter DMM see Section 6 1 1 for specifications 6 14 September 1995 UM344 2 CALIBRATION AND MAINTENANCE 6 2 2 Transmitter Exterior Inspection The frequency of inspection will depend on the severity of the transmitter s environment 1 Inspect the exterior of the transmitter enclosure for accumulated oil dust dirt and especially any corrosive process overspray 2 Check that each enclosure cap is fully threaded onto the enclosure compressing the O ring between the cap and the enclosure The O ring must not be cracked broken or otherwise damaged 3 Ifa digital meter is installed inspect the protective viewing glass in the enclosure cap for cleanliness and damage A cracked or punctured glass must be replaced see Section 6 4 and the Parts List at the back of this Manual 4 Inspect both enclosure conduit entrances for possible moisture leaks An unused conduit entrance must be plugged and sealed Inspect the cable clamps of all watertight cable conduits for loose clamps and deteriorated sealing material Tighten clamps and reseal as necessary 5 Ifa conduit drain is installed inspect the drain seals for obstr
37. and electrical installation IMPORTANT The installation must conform to the National Electrical Code and all other applicable construction and electrical codes Refer to the installation drawings in Appendix B when locating a Transmitter in a hazardous area 4 1 EQUIPMENT DELIVERY AND HANDLING 4 1 1 Factory Shipment Prior to shipment a Transmitter is fully tested and inspected to ensure proper operation It is then packaged for shipment Most accessories are shipped separately 4 1 2 Receipt of Shipment Each carton should be inspected at the time of delivery for possible external damage Any visible damage should be immediately recorded on the carrier s copy of the delivery slip Each carton should be carefully unpacked and its contents checked against the enclosed packing list At the same time each item should be inspected for any hidden damage that may or may not have been accompanied by exterior carton damage If it is found that some items have been damaged or are missing notify Moore Products Co immediately and provide full details In addition damages must be reported to the carrier with a request for their on site inspection of the damaged item and its shipping carton 4 1 3 Storage If a Transmitter is to be stored for a period prior to installation review the environmental specifications in Section 8 3 5 September 1995 4 1 INSTALLATION UM344 2 4 2 ENVIRONMENTAL CONSIDERATIONS Many industrial processes cre
38. at the On Line Menu The following paragraphs will describe how to view these parameters TRANS VAR S displays updated on line transmitter parameters These parameters include the measured variable MV the current output D the process variable PV and their respective units or the Process P Set Point S and Valve V controller variables Exit this screen by again pressing the TRANS VAR S key or pressing END TREND displays the adjacent screen to select the variable to be trended 1 Press PREV or NEXT to toggle between Process Variable Measured Variable and Valve with the Controller ON 2 Press SELECT to enter a value Pressing END will exit this procedure and display the On Line Menu 3 Type the desired sample time range 1 300 seconds default is 1 second Thirteen samples maximum of the variable can be shown while sampling at the sample time chosen If the sample time entered is greater than 300 seconds a Warning message will appear that shows the range of values September 1995 UM344 2 ON LINE AND OFF LINE OPERATION 400 00 4 Press ENTER The following are shown in the adjacent 105 24 ll screen Upper and Lower Range Values stored in the F bea transmitter the current transmitter reading and the 20 thirteen sample trend 5 Press either TREND or F4 to exit this screen ZOOM expands a portion of a selected variable s trend Zoom is selected from the Trend screen ENTER ZOOM VAL
39. be configured as tracking or non tracking If it is configured as tracking the SP will track the PV when the controller is in manual If it is configured as non tracking the SP will remain at its hold value SP Track and Hold On power up the operating value in the function block is initialized to the Power Up value The Power Up value can only be changed by editing the parameter in this function block with the MXC or by storing a new value via the pushbuttons of the XTC A 7 A M TRANSFER BLOCK Power Up Mode Automatic Manual PV Automatic Mode Only Yes No Output Powet Up Valve e entes 1 0 to 110 The A M transfer function block consists of 1 Single Pole Double Throw switch The switch is controlled with the pushbuttons of the XTC or from the A M key of the MXC When the block is in AUTO the output is equal to the controller output When the block September 1995 A 3 APPENDIX A FUNCTION BLOCK DESCRIPTIONS UM344 2 is in MANUAL the output is the manual M value 1 0 to 110 The manual value can be adjusted with the pushbuttons of the XTC or from the CHANGE VALVE key of the MXC When the manual M value is not the function block output it will track the output value of the controller function block The A M transfer can be configured as AUTO only When the Automatic Mode Only parameter is selected as YES the function block will remain in the AUTO position Configu
40. calibration is not required Disconnect test equipment re connect all wires and install enclosure cap 6 1 4 2 Narrow Wide Millivolt Calibration Calibration equipment connections are as shown in Figure 6 4 A NARROW MILLIVOLT CALIBRATION 1 From the MXC execute the FIND XMTR program then select CAL TEST F2 from the display menu 2 Step through the MXC screens using the PREV and NEXT buttons to select NARROW MILLIVOLT calibration Press SELECT F4 APPLY 26 000 mV TO The MXC will display ee POPE 3 Adjust the output of the millivolt source to 26 000 mV APPLY 11 000 mV TO 4 Press CONT F4 Screen will display mV 1 AND mV 3 WITH COPPER WIRE 5 Adjust the output of the millivolt source to 11 000 mV WARNING BURNING 6 Press CONT F4 Screen will return to SELECT EPROM WILL CHANGE CALIBRATION CHARAC CALIBRATION menu shown here TERISTICS ABRT CONT 7 Press CONT F4 to calibrate Press ABRT F3 to quit without changing calibration 8 Narrow Millivolt calibration is completed If no other calibrations are required disconnect test equipment reconnect all wires and install enclosure cap If Wide Calibration is required retain test set up and proceed to paragraph B B WIDE MILLIVOLT CALIBRATION 1 From the MXC execute the FIND XMTR program then select CAL TEST F2 from the display menu 2 Step through the MXC screens to select WIDE MILLIVOLT calibration Press SELECT F4
41. communications with a transmitter a transmitter self diagnostics failsafe flag is detected in a received message Use the MXC STATUS program to identify the error source POSSIBLE CAUSE CORRECTIVE ACTION Transmitter Failed Self Diagnostic Press the STATUS key on the MXC Confirm that the message FAILSAFE Test appears in the upper right corner of the display With transmitter in FAILSAFE mode see paragraph A of this section and perform steps 3 to 5 6 3 2 2 Possible Transmitter Output Problems In this section Tables 6 5 through 6 9 provide information on diagnosing several types of analog output malfunction symptoms Under each symptom possible causes are identified and corrective action suggested TABLE 6 5 Symptom Zero or Low Output POSSIBLE CAUSE CORRECTIVE ACTION Transmitter accidentally configured Configure transmitter for Analog Mode by changing its short address to zero for Digital Mode Output current See Section 3 reads a constant 4 000 mA Transmitter Electronics Failure Determine if transmitter communicates with MXC by executing FIND XMTR program on MXC see Section 3 Refer to Section 6 3 2 1 paragraph B to troubleshoot a communications failure Check transmitter STATUS If a FAILSAFE message is posted refer to Section 6 3 2 1 paragraph A for troubleshooting procedures If transmitter STATUS checks OK at the Main Menu select LOOP OVRD loop override Verify the loop by setting the output current to
42. connected to shield This capacitance is the worst case value and is to be used in the cable length formula 4 3 5 2 Maximum Cable Length Calculation The maximum permissible single pair cable length is 10 000 feet 3000 meters or less as determined by the following formula 65 000 000 C 10 000 L RxC C Formula Definitions L The maximum total length of cable permitted to construct the Network L Feet when C is in pF ft L meters when C is in pF meter R The Network Resistance which is the ohmic sum of the Current Sense Resistance and Barrier Resistance both Return and Supply if any in the Network and the resistance of the wire 4 10 September 1995 UM344 2 INSTALLATION C Cable capacitance per unit length between one conductor and the other conductor connected to the shield C may be in pF ft or pF meter Total input terminal capacitance of Field Instruments the Primary Master is excluded Cris given by the following formula Cr sum of all values x 5000 Where C is an integer e g 1 2 3 corresponding to the input terminal capacitance of a Field Instrument C values are read from the following table For Field Instruments without C values use C 1 FIELD INSTRUMENT CAPACITANCE C VALUE Less than 5000 pF 5000 pF to less than 10000 pF Example Calculation Assume a Network consists of a 344 and Field Instrument C 1 and C 6 Let R 2500 C 40 pF ft Cr 1 6 x 5000
43. equals ENABLE When the jumper is in the DISABLE position the pushbuttons perform no function September 1995 UM344 2 ON LINE AND OFF LINE OPERATION 5 1 3 1 Display Functions The numerals displayed on the Digital Meter represent the value of the PROCESS VARIABLE PV when the PV annunciator is lit see Figure 5 1 The units associated with PV are chosen during transmitter configuration of the OPERATOR DISPLAY BLOCK Refer to section 5 1 1 2 There are three OUTPUT DISPLAY CODE choices listed in Table 5 1 that describe what information is displayed and how it will be annunciated The VALVE V is always displayed as a percentage of controller output and the V and annunciators will be lit The SETPOINT SP is displayed in the same units as the PROCESS VARIABLE PV When the controller is ON depressing the FULL SCALE pushbutton will toggle the display between PV and V The ZERO pushbutton will toggle the display between PV and SP PB Alarm Display Status Status Code Displayed Variable Indicator Auto Manual Displayed Status Variable FIGURE 5 1 Model 344 Digital Meter TABLE 5 1 Output Display Code Choices OUTPUT DISPLAY LIT ANNUN PV UNITS CODE 0 Percent Percent of full span 0 to 100 Process Variable Engineering Units e g CEL FAHR 2 Measured Variable CEL OHMS MV KELV RANK FAHR August 1995 5 15 ON LINE AND OFF LINE OPERATION 5 16 UM344 2 S
44. excluded from the poll If a major fault exists in the network wiring the MXC will display the warning message NO TRANSMITTER FOUND Go to section 6 3 Troubleshooting to confirm and resolve wiring problems 6 Communication has now been established between the transmitter and MXC and the transmitter s configuration has been uploaded to the MXC s On Line Memory 3 4 September 1995 UM344 2 WOULD YOU LIKE TO SAVE TRANSMITTER DATA IN ARCHIVES NO YES ENTER ARCHIVE NUMBER 0 99 EN END TER Dev ID 210300003C Tag TTC 101 ADD 00 LOOP CAL CON OVRD TEST FIG 52 3 3 TESTING THE TRANSMITTER MXC AND THE LOOP 3 3 1 MXC Testing SELECT FUNCTION FIND ARCH TEST XMTR FUNC END MXC SELF TEST TEST TEST KEYS SCRN September 1995 INITIAL TRANSMITTER SET UP The next screen to appear is used to save the configuration to an archive If the configuration is to be edited press YES F4 to save the configuration in case a mistake is made The next screen will prompt for an archive number 0 99 The archive number chosen will be the location where the MXC stores the transmitter s configuration data Archiving will be discussed in more detail in the Off Line portion of section 5 The MXC can now be used to calibrate or configure the transmitter monitor loop parameters or test loop functionality Section 5 of this Manual describes configuring and monitoring of the transmitter and cali
45. for Point To Point and Multi Drop Networks Refer also to Section 4 6 for installations in hazardous locations Figure 4 12 shows signal and sensor termination terminal strips in the Transmitter s enclosure The following should already have been completed Selection of either analog or digital operating mode and corresponding Point To Point or Multi Drop Network Section 4 3 3 Selection of a power supply Section 4 3 4 Mechanical installation of Transmitter s installed Section 4 4 Pulling of loop and sensor cables through conduit and into terminal compartment Section 4 4 5 Connect the transmitter to the loop as follows 1 Access transmitter signal terminals by unscrewing the short enclosure cap 2 As shown in Figure 4 12 there are two terminal strips Upper Terminal Strip SIGNAL and SIGNAL Transmitter Network Connections TEST and TEST Analog test milliammeter connections Lower Terminal Strip 1 RTD 4 or OHM or mV sensor connections 2 RTDI sensor connection 3 RTD or OHM TC or mV sensor connections Determine method of connection to transmitter signal loop terminals Strip loop cable and conductors Install ring tongue or spring spade terminals for 6 screws and the cable conductor gauge If terminals will not be used tin conductor ends and form a loop September 1995 4 31 INSTALLATION UM344 2 MXC Test Connections Terminal
46. is removed to prevent accidental electrical shorts Remove the enclosure cap for access to the terminal compartment Connect MXC and DMM milliammeter to the loop as shown in either Figure 6 1 or 6 2 Set DMM to measure 4 20 mA Field Calibration Wiring Open jumper at Circuit Junction Place loop in Manual mode Apply power to the Loop Establish communication between MXC and transmitter Refer to Section 3 2 as necessary If the transmitter is configured for digital mode reconfigure for analog mode by setting the short address to zero 0 Refer to Section 5 1 1 3 as necessary At the Main Menu select the CAL TEST program Step through the MXC screens and use the PREV and NEXT i AU DER buttons to select the DAC OUTPUT calibration Press SELECT OUTPUT TO A EN F4 4 00 MA BORT TER The MXC will display the adjacent screen Press ENTER F4 ENTER CURRENT The MXC will display lt quit TER Read the ammeter It should indicate 4 000 0 0048 mA If output is within limits press QUIT F3 and proceed to step 13 If calibration is required perform steps 11 and 12 Respond to the prompt Key in the current indicated by the ammeter and press ENTER F4 September 1995 6 3 UM344 2 CALIBRATION AND MAINTENANCE 250 5 5 1 E ex EG QS gt j i 2 E a L ooo gee Yu
47. mA analog signal Since there is no net energy change the analog signal will not be disturbed and loop integrity is maintained An MXC can be used on line and off line On line it can display process data from a field instrument or transfer a configuration between the MXC and a field instrument Off line it is used to create a configuration or to edit a configuration stored in the MXC Off line an MXC can communicate with a personal computer to transfer configurations between the MXC and personal computer In the following sections MXC hardware and software will be described Included in this description will be the display keypad wiring and power requirements In addition at the end of this section major MXC menu screens are shown in Figure 2 2 and Model 344 parameters accessible through the MXC are shown Between the sense resistor and instrument in a non hazardous area installation Between the sense resistor and a barrier in a hazardous area installation September 1995 2 1 XTC COMMUNICATOR 2 2 MOORE XTC COMMUNICATOR F4 N F3 TRANS VAR S TREND ZOOM STATUS 112 Z E e CHANGE A UJ J 5 gt ES VALVE M Q amp SPACE TUNE BACK 9 gt gt z CU o m e LIGHT SHIFT SHIFT SHIFT eU oll M RJ Ex X026650
48. may need to be edited by the user before the transmitter is used in a loop 1 4 PRODUCT SUPPORT Product support can be obtained from the Moore Products Co Technical Information Center TIC TIC is a customer service center that provides direct phone support on technical issues related to the functionality application and integration of all products supplied by Moore Products Co To contact TIC for support either call 215 646 7400 extension 4TIC 4842 or leave a message in the bulletin board service BBS by calling 215 283 4958 The following information should be at hand when contacting TIC for support e Caller ID number or name and company name When someone calls for support for the first time a personal caller number is assigned This number is mailed in the form of a caller card Having the number available when calling for support will allow the TIC representative taking the call to use the central customer database to quickly identify the caller s location and past support needs e Product part number or model number and version e If there is a problem with a product s operation e 5 the problem intermittent or constant What steps were performed before the problem occurred What steps have been performed since the problem occurred What symptoms accompany the problem Is an error message displayed What is the installation environment For example type of plant and process involved loop control strategy and related eq
49. memory Some of this data controls communi cation and transmitter operation and cannot be altered by the user Other data determines how the transmitter responds to changes in temperature with a change in current or digital output and is alterable by the user Using the MXC in the on line mode configurations can be uploaded from the transmitter edited and saved to archive memory or downloaded to the Model 344 The following sections describe configuration in more detail The following sections are in a two column format Step by step procedures are in the right column The left column contains relevant MXC screens September 1995 5 1 ON LINE AND OFF LINE OPERATION Dev ID 210300003C 1 Tag TTC 101 ADD 00 LOOP CON Enp OVRD TEST FIG 2 CONFIGURATION MODE EDIT EDIT ARCH CONF TEMP XMTR MODEL 344 TYPE 03 QUIT CONT WRITE PROTECT STATUS n DISABLE LAST NEXT sev SEL OPTN OPTN END CONT 5 CONFIGURATION COMPLETE RE DOWN QUIT SAVE VIEW LOAD 6 SELECT BLOCK TO EDIT SENSOR INPUT SEL PREV NEXT END ECT 5 2 UM344 2 Establish communication with a transmitter see Section 3 2 The On Line Menu shown adjacent should be displayed Press CONFIG F3 at the On Line Menu screen to enter the configuration mode and display the Configuration Mode screen adjacent This screen is used to select editing a configuration stored in either the selected transmitter or archived in the MXC Press EDIT CONF
50. ohm steps Accuracy to be 0 02 ohms Used to simulate RTD Ohm type input resistance e Thermocouple reference tables providing millivolts vs temperature data Use to check accuracy of indicated temperature e RTD reference tables providing ohms vs temperature data Used to check accuracy of indicated temperature 6 1 2 Transmitter Analog Output DAC Calibration Perform the steps in the appropriate Section according to the transmitter s normal operating mode analog operation Section 6 1 2 1 digital operation Section 6 1 2 2 IMPORTANT Calibration of the DigitaFto Analog Converter DAC is not normally required and should be performed only after all other options have been exhausted 6 1 2 1 Transmitter Normally Configured for Analog Mode If the transmitter is field mounted and conditions permit calibration can be performed at the site as described in steps 2 through 18 If a bench calibration is desired perform steps 1 through 18 1 Bench Calibration only Disconnect the transmitter from the process by performing the steps in Section 6 5 6 2 September 1995 UM344 2 CALIBRATION AND MAINTENANCE 10 11 NOTE Removing a transmitter can interrupt power to other transmitters powered from a common power source Note the effect this can have on process control and operation and if necessary follow the proper procedures to shut down the process When disconnecting the SIGNAL leads carefully insulate each lead as it
51. operating characteristics CONNECTION HEAD An enclosure attached to the head of a thermocouple within which the electrical connections are made CONT CONTINUE MXC screen abbreviation CURRENT SENSE RESISTANCE The resistance in a Network across which the field instrument Transmitter signal voltages are developed September 1995 9 1 GLOSSARY UM344 2 DAMPING A user selectable output characteristic that increases the response time of a transmitter to smooth the output when the input signal contains rapid variations DIN Deutsche Industrial Norms A German agency that sets engineering and dimensional standards and has world wide recognition DIN 43760 The standard that defines the characteristics of a 100 ohm platinum RTD having an R versus T curve with an Alpha of 0 00385 ohms per ohm per degree C DIGITAL SIGNALING The high frequency HART signal EXPLOSION PROOF ENCLOSURE An enclosure that can withstand an explosion of gases within it and prevent the explosion of gases surrounding it due to sparks flashes or the explosion of the container itself and maintain an external temperature which will not ignite the surrounding gases FIELD INSTRUMENT A network element that uses current variation for digital signaling or digital plus analog signaling HART Highway Addressable Remote Transducer A communication protocol that provides simultaneous analog and digital signaling between master and slave devices It is su
52. prompts to save the configuration in the MXC An archived configuration can be accessed using the MXC during On Line operations through the configuration mode l Press CONFIG at the On Line menu screen to display EDIT ARCH EDIT CONF and END Select EDIT ARCH to call an archived configuration from MXC memory At the adjacent screen type the archive number or the tagname of the configuration to be edited and press ENTER f the archive contains data the next screen will provide the option of editing the archive or downloading the archive directly to the transmitter If the archive contains no data a Warning message will appear and default configuration data will be loaded into the On Line memory Press CONT to edit or download the configuration e If the archive contains data that does not match the current transmitter type an Error message will appear Press CONT to choose a new archive number Press either EDIT ARCH to edit the configuration as described in section 5 1 1 or DOWNLOAD to download the configuration to the transmitter and bring up a series of screens When download is chosen the MXC will display e A prompt if there are any differences between the downloaded configuration data and the configuration ON LINE AND OFF LINE OPERATION resident in the transmitter simply respond to the prompt continue or abort 5 30 UM344 2 September 1995 UM344 2 August 1995 ON LINE AND OFF LINE
53. screen COMPLETED 3 3 2 Transmitter Testing Although the Transmitter continuously performs an on line self test a more extensive self test can be performed after communication with the MXC has been established 1 At the On Line Menu press CAL TEST F2 to CALIBRATE TEST display the Calibrate and Test selections 2 At the Calibrate Test Menu press TEST A Test CAL TEST END caution screen will appear Press one of the following TEST PERFORMS ABORT Press to return to the Calibrate Test DIAGNOSTIC TEST ON TRANS A PRO MITTER BORT CEED PROCEED Press to continue the self test A warning screen will be displayed then a message WARNING SELF TEST states that the test is occurring After the test the MAY BUMP TRANSMITTER MXC will show whether or not the transmitter has OUTPUT BORT CONT passed or failed the self test If the MXC indicates that the Transmitter has Passed Press CONT then END TRANSMITTER PASSED 2 TRANSMITTER SELFTEST Failed Check installation wiring thoroughly Go to Section 6 for troubleshooting suggestions CONT 3 When the MXC displays the Transmitter s ID On Line Menu press the STATUS Key to check for Transmitter errors If an error is present the ERROR Key F2 will be displayed Press ERRORS F2 to check for ROM RAM EEPROM TIMER and SENSOR errors Refer to Section 6 3 Troubleshooting to confirm and resolve the error 4 Ifthe alarm function
54. to ground at the Transmitter s terminal compartment if the cable shield is grounded at the sensor assembly 4 4 MECHANICAL INSTALLATION This section describes the mechanical installation of a Transmitter and the installation of electrical conduit for wiring Transmitter dimensions are given in Figure 8 3 Mount a Transmitter in any position orientation Be sure to allow sufficient clearance for e Installation of wiring e Removal of the enclosure end caps e Viewing of the optional Digital Meter 4 4 1 Pipe Mounting A Transmitter can be mounted to a vertical or horizontal 2 inch pipe using the supplied mounting bracket 1 Transmitter to Bracket Mounting 4 16 September 1995 UM344 2 INSTALLATION 1 Refer to Figure 4 5 and align four mounting holes in the base of the enclosure with the four 0 281 inch diameter holes in the Bracket Note that the transmitter can be mounted to the Bracket in four possible positions 90 apart to the Bracket 2 Using supplied 1 4 20 x 1 2 bolts mount the transmitter to the bracket September 1995 4 17 INSTALLATION UM344 2 5 90 149 9 o o i 4 4 112 8 4 04 102 6 034 8 6 Diameter Dimensions in Inches millimeters Mount Transmitter to bracket with 1 4 20 bolts and lockwashers quantity 4 0282151 FIGURE 4 5 Dimensions Mounting Bracket for Model 344 4 18 September 1995 UM344 2 September 1995 SETTET P
55. transmitter 7 2 3 Signal Conversion The digitized sensor and reference junction signals are passed from the input circuit s A D Converter through isolated pulse transformers into the microcontroller uC for signal linearization and temperature compensation The output signal from the uC is applied to a D A Converter which outputs two variable width pulses PULSE ON PULSE OFF The widths of the pulses are modulated in direct proportion to the voltage level of the sensor input signal The pulses are simultaneously applied to the V I Converter and to two P channel FETs within the Converter The output from the FETs is filtered and fed into an operational amplifier whose output drives the voltage to current conversion circuit a Darlington transistor pair acting as a pass transistor for the 4 to 20 mA loop current output 7 2 4 Communication Format The Model 344 communicates via the HART protocol with the portable MXC and any Primary or Secondary Master connected to the Network HART communication uses phase continuous frequency shift keying FSK at 1200 bits sec and frequencies of 1200 Hz for logic 1 and 2200 Hz for logic 0 HART communications are superimposed AC coupled on the analog 4 20 mA signal Because the digital signaling is high frequency AC its DC average is zero and does not interfere with analog signaling A 2 Pole Active Filter connected to the loop input receives HART transmissions The filter rejects low frequency analo
56. use the back light only when needed TRANS VAR S The Transmitter Variables key is a quick access key that is pressed to display a screen showing the transmitter s on line parameters measured variable MV current output I process variable PV and their respective units Exit this screen by again pressing the TRANS VAR S key or by pressing the F4 key for END If the transmitter is configured as a transmitter controller you will be prompted to choose either transmitter variables or controller variables Controller variables include process variable setpoint and valve TREND The TREND key is another quick access key that is pressed to trend a variable and show up to thirteen samples Any one of the following variables can be trended the measured variable MV the current output L or the process variable PV The trend sampling rate can be set to 1 300 seconds between samples Exit this screen by again pressing the TREND key or by pressing the F4 key for END ZOOM The ZOOM key is a quick access key that allows a closer examination of a variable chosen in the Trend screen This key functions only when a Trend screen is displayed ZOOM magnifies a range of values equal to 10 of the span The midscale value is user selected For example when viewing a range of 0 100 in the Trend screen the value of 50 is chosen to zoom on The Trend screen now shows a range of 45 5596 Exiting the Zoom screen again displays the Trend screen E
57. 0 Figure 2 1 Moore XTC Communicator MXC UM344 2 September 1995 UM344 2 XTC COMMUNICATOR 2 1 DISPLAY four lines of twenty characters each to show configuration SENSOR INPUT parameters operating status on line variables and trends The LCD SEL has a back light that can be turned on for viewing in dimly lighted PREV NEXT END ECT areas All MXC screens have a similar layout As shown here most configuration screens use the top two lines to describe the current screen and the lower two lines to show the selections available from this screen Selections are entered by pressing keys on the MXC keypad Some on line variable and trend screens are slightly different from that shown here but they will always have a selection to access the next screen A blinking infinity symbol at the lower right corner of the screen indicates that the MXC is communicating with a field instrument or a personal computer No keyboard keys should be pressed until the symbol is cleared upon completion of the communication 2 2 KEYPAD DESCRIPTION The thirty key keypad is shown in Figure 2 1 It contains dedicated keys alphanumeric keys with shift keys and function keys These keys are color coded as follows e dedicated ON key e Black dedicated OFF key e Gray function keys and dedicated keys for controller block on line monitoring and MXC functions White dedicated alphanumeric symbol and shift keys A dedicated ke
58. 0 003902 5000 Pt U S 0 003902 C 2200 0 650 328 to 1202 10 8550 18 1530 20010650 328 to 1202 20 850 36 1530 C C 20010850 328 to 1562 20 1050 i 36 1890 200t0650 328 to 1202 20 850 i 36 1530 Thermocouples Type B NBS Type E NBS Type J NBS Type K NBS 185 to 1370 301 to 2498 60 1555 i 108 2799 2 Type N NBS Type R NBS Type S NBS Type T NBS Millivolt Wide Range 15 to 100 5 115 mV 30UV Narrow Range Ohm Input Wide Ohm Narrow Ohm 0450 Notes 1 Includes transmitter s absolute digital accuracy and ambient temperature effect over the entire operating range 8 6 September 1995 UM344 2 MODEL DESIGNATION AND SPECIFICATIONS 2 For 400 C and above For 100 C to 400 C accuracy is 9 C Common applications are above 800 C September 1995 8 7 MODEL DESIGNATION AND SPECIFICATIONS UM344 2 Rotate Nameplate to Access Zero and Full Scale Adjustments X02803S1 Clearance for Enclosure 2 44 Cap Removal 62 0 7 95 201 9 1 2 NPT or w Meter Option 8 94 227 1 M20 X 1 5 Tapped Hole 4 96 126 0 2 99 Electrical Digital Meter 75 9 Entrance 4 12 104 7 5 95 151 1 2 Places 85 21 6 WoO 0 90 22 9 Dimensions Inches Millimeters 1 4 20 Thread 4 Places FIGURE 8 amp 3 Model 344 Dimensions Accuracy Analog Output D A Converter 0 075 of span over entire temperatur
59. 000 ft 1500 More than 5000 ft 1500 Cable Capacitance 2 ient Recommendation Length Maximum September 1995 MODEL DESIGNATION AND SPECIFICATIONS 12 Vdc with no loop resistance see Figure 4 4 2500 minimum 11000 maximum Ry 43 4Vs 520 8 where Vs power supply voltage 42 Vdc for Ex N use see Section 8 3 6 0 2 Vp p 47 125 Hz 0 6 mV RMS maximum 10 Ohms maximum Less than 0 00596 of output span per volt 4 1 2 digit LCD with status indicators 27 000 pF HART C 6 refer to section 4 3 5 1 Analog 4 20 mA single current loop see Figures 4 1 and 4 2 See Figure 4 4 1 to 15 Digital parallel connected see Figure 4 3 See Figure 4 4 250 Vac 250 Vac Twisted Single Pair Shielded Copper 24 AWG minimum 20 AWG minimum 16 AWG maximum Refer to Section 4 3 5 Belden 8641 24 AWG Belden 8762 20 AWG Refer to Section 4 3 5 8 9 Corrosive Atmosphere Vibration Effect MODEL DESIGNATION AND SPECIFICATIONS 8 3 4 Sensor Inputs Common Mode Rejection 2 1 Normal Mode Rejection Input Overvoltage Protection Digital Filter Range 2 Thermocouple TC Reference Junction Compensation Input Impedance Thermocouple Burnout Scale Direction Conformity Millivolt mV Input Impedance 440 00022 Resistance Temperature Detector RTD In
60. 2 Confirm the transfer of mode control from A to M Or M to September 1995 UM344 2 August 1995 ON LINE AND OFF LINE OPERATION B Change SET POINT 1 The Controller must be in the AUTO control mode to change the SET POINT if not place the Controller in the AUTO control mode Press and hold for a minimum of 5 seconds the ZERO pushbutton then release the button The SP and PB annunciators shall be lit and the PV annunciator shall be extinguished The displayed number is the active SET POINT value Select new SET POINT Note the following e Cycling pressing and releasing in less than 1 second the ZERO or FULLSCALE pushbutton respectively decrements or increments the SET POINT in 0 01 increments of span e Pressing and holding either pushbutton for more than 1 second initiates a special acceleration algorithm whereby the SET POINT changes in greater and greater increments until limiting occurs e The new SET POINT value is changed in RAM only and not yet stored permanently in memory If the Pushbutton Mode times out before storage is accomplished the Controller will operate with the new SET POINT however the new value will be lost after a power down or Master Reset C Store New SET POINT to Memory new Power Up Setpoint Valve in Setpoint Track amp Hold Block 1 Simultaneously press and release both pushbuttons to store new SET POINT After SET POINT storage the Control
61. 2 to change state Press key again or F4 to exit this mode TUNE This key allows tuning of the controller The first screen displays the controller action DIRECT or REVERSE The controller action may be viewed from the TUNE key but it must be changed in the configuration mode Press F4 to continue The Proportional Gain PG Time Integral TI and Time Derivative TD can be changed from this screen Press F1 F2 or to display the current value and edit the parameter Press CONT key F4 to continue The Derivative Gain DG and Manual Reset MR be changed from this screen Press 1 or F2 to display the current value and edit the parameter Press F4 to go to the previous screen Press the TUNE key again or F3 to exit this mode ALPHANUMERIC Keys Twelve white keys with alphanumeric characters and symbols are located toward the center of the keypad area Pressing a 1 9 0 or key will display that character on the screen These keys also have alphabetic characters and symbols that require the use of a SHIFT key These numbers letters and symbols are typically used in writing a range damping value tagname message or descriptor SHIFT Keys Three shift keys are located below the alphanumeric keys They are used to access a letter or symbol located in the upper left center or right portion of an alphanumeric key To select an alphabetic character or upper symbol press the proper SHIFT key le
62. 35 000 65 000 000 35 000 10 000 Then L z 5375 feet 1612 5 meters 250 40 40 4 3 6 Network Junctions A Network Junction is shown in Figure 4 1 It is a wiring junction installed at a convenient point in the loop to facilitate wiring testing and troubleshooting Typically the Junction is a conventional terminal block mounted on a panel with a protective cover cabinet or junction box to enclose and protect wiring terminals Multiple Junctions can be installed to provide field access terminals for the connection of an MXC Note the following e Network with Barriers Locate a Junction anywhere along the Network in the non hazardous area between a barrier and the Current Sense Resistor e Network without Barriers A Junction may be located anywhere along the Network between the Current Sense Resistor and Transmitter September 1995 4 11 INSTALLATION UM344 2 A Junction should be a simple electrical series connection containing NO repeaters or other devices active or passive that can degrade HART communications 4 3 7 Safety Barriers Installed safety barriers must comply with the following e Locate intrinsic safety barriers between the system power supply e g Primary Master if used residing in the non hazardous area and the transmitter s in the hazardous area e Combined or separate supply and return barriers may be used e For an intrinsically safe applica
63. 6 12 September 1995 UM344 2 CALIBRATION AND MAINTENANCE The MXC s screen will display APPLY 103 00 mV TO mV 1 AND mV 3 3 Adjustthe output of the millivolt source to 103 000 mV CORE ER MIRE September 1995 6 13 CALIBRATION AND MAINTENANCE UM344 2 4 Press CONT F4 Screen will display APPLY 18 000 mV TO mV 1 TO AND 3 WITH COPPER WIRE 5 Adjust the output of the millivolt source to 18 000 mV CONT WARNING BURNING 6 Press CONT F4 Screen will display EPROM WILL CHANGE CALIBRATION CHARAC 7 Press CONT F4 to calibrate HED ABRT Press ABRT F3 to quit without changing calibration 8 Wide Millivolt calibration is completed Disconnect test equipment reconnect wires and install enclosure cap This completes the calibration checks and procedures 6 2 PREVENTIVE MAINTENANCE Preventive maintenance consists of periodic inspection of the transmitter cleaning the external surface of the transmitter s enclosure and draining condensate from conduit Preventive maintenance should be performed at regularly scheduled intervals NOTE The electronics module contains integrated circuits that can be damaged by improper handling The high quality devices used contain built in protective circuitry however they can be damaged by low energy high voltage electrostatic discharge Follow procedures to prevent the buildup and discharge of electrostatic energy see Service Kit below 6 2 1
64. 6 HAZARDOUS AREA INSTALLATION Drawings showing Transmitter installation data for hazardous areas are located in Appendix B Entity parameters barrier selection and important wiring information are specified on these drawings The Appendix also contains a list of tested barriers Before installing a transmitter in a hazardous area check the nameplate and Sections 8 1 and 8 3 of this Manual for required approvals or certifications NOTE The MXC is approved for use in non hazardous areas only EXPLOSION PROOF INSTALLATION If the installation is required to be explosion proof per the National Electrical Code refer to a current copy of the Code and the following e User supplied explosion proof conduit seals glands are required on transmitter housing conduit outlets and any installed junction boxes See Figure 4 11 e Explosion proof glands must provide a good seal Apply a sealing compound around the sealing surface if necessary e Sensor and power wiring conduit entries at the Transmitter must have a minimum of five threads fully engaged enclosure cap must be installed and have a minimum of eight threads fully engaged with no damaged threads permitted e Go to Section 4 5 for wiring connections to the transmitter s terminals Refer to Appendix B for hazardous area installation information This completes the physical installation September 1995 4 35 INSTALLATION 4 36 UM344 2 September 1995 UM344 2
65. DIT 1 Press the NEXT key to display the Transmitter ID Block and TRANSMITTER ID then press SELECT to display the Tag screen SEL PREV NEXT END ECT 2 If desired enter or edit the transmitter tagname by typing an alphanumeric sequence The blinking cursor shows where a TAG TC 101 character will be placed Use the arrow keys lt and gt to move the cursor to any position in the tagname Press SEL CONT to continue Pressing SEL END will end configuration of the transmitter ID Block 3 As described in steps 1 and 2 enter or edit the DESCRIPTOR and the MESSAGE respectively DATE DD MM Y Y 4 At the Date screen enter or edit the date using the lt and gt 28 02 95 keys to move the cursor to any position in the date field SEL f SEL END _ CONT NOTE The format shown on the screen DD MM YY must be followed or the MXC will not download the selection Press SEL CONT to display the Device Serial Number screen Pressing SEL END will end configuration of the SEL SEL transmitter ID Block END CONT DEVICE SERIAL NUMBER 12345678 5 Enter or edit the device serial number on the nameplate using the lt and gt keys to place the cursor to any position within the serial number field 5 6 September 1995 UM344 2 ON LINE AND OFF LINE OPERATION NOTE Only numbers may be used in the serial number SHORT ADDRESS 00 field SEL SEL Press SEL CONT to display the Short Address screen Pressing SEL E
66. DOUS AREA INSTALLATION DRAWINGS UM344 2 FIGURE B 4 Model 344 Intrinsically Safe Installation of Model 344 with Modell 772R Dwg 15032 3441 Sheet 4 of 4 B 6 September 1995 UM344 2 APPENDIX B HAZARDOUS AREA INSTALLATION DRAWINGS September 1995 B 7 UM344 2 WARRANTY WARRANTY The Company warrants all equipment manufactured by it and bearing its nameplate and all repairs made by it to be free from defects in material and workmanship under normal use and service If any part of the equipment herein described and sold by the Company proves to be defective in material or workmanship and if such part is within twelve months from date of shipment from the Company s factory returned to such factory transportation charges prepaid and if the same is found by the Company to be defective in material or workmanship it will be replaced or repaired free of charge f o b Company s factory The Company assumes no liability for the consequence of its use or misuse by Purchaser his employees or others A defect in the meaning of this warranty in any part of said equipment shall not when such part is capable of being renewed repaired or replaced operate to condemn such equipment This warranty is expressly in lieu of all other warranties guaranties obligations or liabilities expressed or implied by the Company or its representatives All statutory or implied warranties other than title are hereby expressly negated and excluded Warranty repa
67. E 6 1 3 RTD OHM Type Input 6 6 6 1 3 1 RTD OHM Calibration 0240000 6 6 6 1 3 2 Current Source Calibration 6 7 6 1 4 Thermocouple Millivolt Type Input 6 9 6 1 4 1 Thermocouple Millivolt Calibration 2 0 6 9 6 1 4 2 Narrow Wide Millivolt 6 11 6 2 PREVENTIVE MAINTENANCE 54 6 12 6 2 1 Tool and Equipment 6 12 6 2 2 Transmitter Exterior nennen nennen 6 13 6 2 3 Transmitter Exterior Cleaning eee reet eei tete eee peine ee Pene ek 6 13 6 2 4 Transmitter Enclosure Interior 6 13 62 5 Transmitter C alibratioti ee toit creer recette tene E ere eee Rn 6 14 6 3 TROUBLESHOOTING pegas ipn ot thue EE Ro pP 6 14 6 3 1 Preliminary Troubleshooting 6 14 6 32 Troubleshooting ss meieni 6 15 6 3 2 1 Diagnostic Messages 6 15 6 3 2 2 Possible Transmitter Output Problems eene 6 19 6 3 3 Diagnosing a Defective Digital LCD Meter
68. G SIGNALING A low current signal of 4 to 20 mAdc from a Field Instrument to a Primary Master or non signaling hardware ANSI American National Standards Institute ARCH ARCHIVE MXC screen abbreviation ARCHIVE A database of user set parameter values that is stored in an MXC An archive is usually a complete configuration Each archive is assigned a unique number 1 99 AWG American Wire Gauge BARRIER A device whose function is to limit the voltage and current in the hazardous area even if certain types of faults occur on the non hazardous side of the Barrier BARRIER RESISTANCE The maximum end to end resistance of a barrier as specified by the barrier manufacturer If both supply and return barriers are used in a network the barrier resistance is the sum of the end to end resistance of both barriers For active barriers that use resistance to limit current the barrier resistance is the internal resistance between the hazardous area terminal and the barrier internal node where voltage is regulated COMMISSIONING Testing of a transmitter and loop to verify transmitter configuration and loop operation and wiring CONF CONFIG CONFIGURE MXC screen abbreviation CONFIGURATION A database or archive created using an MXC and downloaded to a transmitter to define transmitter operation CONFIGURE CONFIGURING The entering of specific parameter data into an MXC to be downloaded to a transmitter to define that transmitter s
69. G TRANSMITTER ON THE BENCH OR IN THE FIELD 3 1 3 1 1 Test Equipment Needed teen 3 1 3 2 ESTABLISHING COMMUNICATION 3 3 3 3 TESTING THE TRANSMITTER MXC AND THE 000 3 5 3 94 MXC Tes ng nre en tuac ete tete eren 3 5 2 32 Transmitter Testing o eene en ttd er Rd e e tees 3 6 3 3 3 Loop Testing uenire ea ere e A eae ania ees or eee Tea ee 3 7 3 4 REVIEW CONFIGURATION DATA 3 7 3 5 CHECKING TRANSMITTER 2 002 02000 0 100000000000 3 9 4 0 INSTALLATION 4 1 4 1 EQUIPMENT DELIVERY AND 2 02 00000 01 4 1 AA Factory Shipment 4 1 4 1 2 Receipt of Shipment ihre ERR 4 1 4 325 T 4 1 4 2 ENVIRONMENTAL 5 8 4 2 4 3 INSTALLATION CONSIDERATIONS csssesessvtoonssnsvsonsnneassnesosansbeantavesernnasnsronaaaresens 4 2 AB Av Mechanical ecce terreno gre e UIT Aig oe eae ere ee eg 4 2 er 4 3 4 3 3 Transmitter Operating Mode and Network Type
70. ICATIONS furnishes tables describing transmitter model numbers and it contains mechanical functional performance and environmental specifications Hazardous area certifications are also listed Before installing or servicing a transmitter read the information on the nameplate and ensure that the correct model is at hand and that the correct procedures are followed Section 9 GLOSSARY contains definitions of various transmitter related terms APPENDIX A describes transmitter function blocks and the parameters available APPENDIX B contains hazardous area installation drawings and information needed for barrier selection WARRANTY contains the product warranty statements and information concerning servicing of the product during the warranty period PARTS LIST shows an exploded view of the transmitter and a list of on hand spare parts and field replaceable parts Rotate Nameplate to Access Zero el and Full Scale Pushbuttons NOC 0280151 Electrical Entrance 1 2 NPT or M20 X 1 5 Tapped Hole Digital Meter Option Electrical Connections ET Ground Connection Terminal Strips Shown with Enclosure Enclosure Cap Cap Removed Quanitity 2 Mounting Hole 1 4 20 Thread 4 Places FIGURE 1 1 Basic Model 344 c September 1995 UM344 2 INTRODUCTION MXC Test Connections Terminal Test Terminal Ground Screw Signal Terminal Notes 1 Viewed with enclosure cap removed 2 MXC Moore XTC Communi
71. IT FUNC END ENTER ARCHIVE 0 99 OR TAG EN END TER WARNING ARCHIVE CONTAINS NO DATA A BORT CONT ARCHIVE 97 FTC1300 SELECT A FUNCTION EDIT CLR ARCH ARCH Off line operations include editing parameters in a transmitter configuration stored in an MXC archive for downloading at a later time to a transmitter The first part of this section describes off line configuration editing The second part explains downloading a configuration to a transmitter An archive is a transmitter configuration stored in the MXC It resides in a specific location in the MXC s On Line Memory This Memory can store up to 100 configurations numbered 0 99 To save time and reduce errors simply recall and edit an archived configuration rather than creating a completely new configuration Configurations created using the MXTC Configuration Software PN 15939 41Vn nn running on a personal computer can be downloaded to and archived in the MXC Vn nn is the software version number 1 At the Main Menu press ARCH FUNC to go to the Enter Archive screen Off Line Archive menu 2 To call an archived configuration type the archive number or the tagname of a transmitter and press ENTER To create a new configuration to be archived type an unused archive number 0 99 and press ENTER 3 Select one of the following If there is data stored in this archive a Warning screen appears Press ABORT to exit the
72. LRV for the transmitter s range 4 Apply the URV sensor input to the transmitter 5 Press SET HI F2 to set the URV for the transmitter s range The screen shows new LRV and URV values 5 4 September 1995 UM344 2 DAMPING 1 0000 SEC END CONT 9 DAMPING 9 SEC ENTER DAMPING VALUE EN QUIT TER BURNOUT DIRECTION UPSCALE LAST NEXT SEL SEL OPTN OPTN END CONT 10 ON LINE AND OFF LINE OPERATION Press ENTER to store the new value in the on line alterable memory and return to the Range screen Pressing QUIT displays the Range screen without saving a new value NOTE To conserve battery power the MXC should not be left in the Sensor Input mode At the Range screen press SEL CONT to display the Damping screen and current damping value Press EDIT F1 to enter a new damping value Type a new damping value and press either ENTER to save and exit or QUIT to exit without saving At the Burnout Direction screen press either LAST OPTN or NEXT OPTN to choose UPSCALE or DOWNSCALE When the desired function is chosen press SEL END to return to the Function Block Menu Go to the next section or the next desired function block 5 1 1 2 Operator Display Block The Operator Display block has the following parameters SELECT BLOCK TO EDIT PROCESS VARIABLE UNITS RANGE AUTO RERANGE OPERATOR DISPLAY and LOCAL DISPLAY CODE SEL PREV NEXT END ECT 1 Press SELECT to edit process va
73. N AND MAINTENANCE UM344 2 POSSIBLE CAUSE CORRECTIVE ACTION Loop Wiring Failure 6 20 Check for 12 Vde minimum across SIGNAL terminals in transmitter terminal compartment Check polarity of loop wiring at both power supply and transmitter Check that loop resistance is between 2500 11000 Check for loose or broken loop wiring at power supply terminals Supply Barriers if used junction boxes and transmitter terminal compartment Check for disconnected or broken Current Sense Resistor Check for short between shield and SIGNAL loop wire Check for accumulation of moisture in transmitter terminal compartment Check for the proper type and length of loop cable and for electrical interference between the loop cable and any adjacent cables in a cable tray or conduit September 1995 UM344 2 CALIBRATION AND MAINTENANCE TABLE 6 2 Message No Transmitter Found Continued Possible Cause Loop Power Check power supply output voltage for installed network resistance Supply Failure 17 Vde minimum at 2500 42 Vdc maximum at 1100Q Check power supply for blown fuse or tripped circuit breaker Possible Cause Transmitter Replace Electronics Module Refer to Section 6 5 2 Electronics Module Failure TABLE 6 3 Message Communication Error This message results when after having successfully established communications with a transmitter an error flag is detected in a received message and the message is not ac
74. ND will end configuration of the transmitter ID Block SHORT ADDRESS 00 ENTER ADDRESS 6 Enter or edit the transmitter short address using the EDIT EN QUIT and ENTER keys as described below QUIT TER EDIT display the Short Address edit screen Use the key to edit by erasing one character in the address at a time starting with the last character Type the new short address on the keypad QUIT return to the previous screen without saving the address ENTER store the new short address in the current MXC On Line Memory The MXC will now show the Function Block Menu 5 1 1 4 Output Block 1 At the Function Block Menu press NEXT to configure the Output block and display the Failsafe Level screen FAILSAFE LEVEL LOW 2 Edit or change this value by scrolling through the selections LAST NEXT SEL SEL OPTN OPTN END CONT using the LAST OPTN and NEXT OPTN keys 3 Press either SEL END or SEL CONT to return to the Function Block Menu 5 1 1 5 Alarm Block There are two absolute alarms which may be configured as HI or LO The setpoint for the alarms is in the same units selected in ALARM 1 ENABLE the operator display block LAST NEXT SEL OPTN OPTN END 1 Press SEL F4 at the Alarm Block to display the Alarm 1 Screen ALARM1 SETPOINT 25 000 DEG 2 Press NEXT OPTN 2 to enable or disable Alarm 1 SEL EDIT END 3 Press SEL CONT F4 to continue to the setpoint screen Augus
75. OCTOBER 1996 Section 8 3 2 Maximum Loop Voltage reference to Ex N use added Section 8 3 6 N requirement added The cover date has been changed however page dates were not changed at this time placed on revised pages in the outside margins XTC is a trademark of Moore Products Co HART is a registered trademark of the HART Communication Foundation All other trademarks are the property of their respective owners UM344 2 PAGE Change bars were Moore Products Co assumes no liability for errors or omissions in this document or for the application and use of information included in this document The information herein is subject to change without notice FR September 1995 CONTENTS vi UM344 2 September 1995 UM344 2 INTRODUCTION 1 0 INTRODUCTION This User s Manual is for the XTC Model 344 Smart Temperature Transmitter It covers both the Transmitter Controller and Transmitter only versions NOTE Throughout this Manual the term Transmitter will include both versions except when the Transmitter Controller is specifically stated and when discussing unique Transmitter Controller features such as the Controller function block All information needed to bench test install configure system test and service a transmitter is included in this User s Manual Figure 1 1 shows the basic Model 344 Figure 1 2 shows the two terminal strips for loop sensor display and test equipment connections
76. Ohm Current Source Calibration Set Up 3 Read and note to three decimal places the value of the forcing current as displayed by the digital microammeter 4 In response to the screen prompt enter the noted current in microamps into the MXC For example 51 125 iWARNING BURNING 5 Press ENTER F4 The screen will display EPROM WILL CHANGE CALIBRATION CHARAC TERISTICS Press CONT F4 to calibrate LS 55 ABRT CONT Press ABRT F3 to QUIT without changing calibration Calibration is now complete 6 Turn OFF the power supply Disconnect the test microammeter and reconnect the test resistance decade box to the transmitter Figure 6 2 7 Turn ON the power supply and return to Section 6 1 3 1 and again perform a calibration check If accuracy is within specifications disconnect test equipment Connect all wires and install enclosure cap If accuracy is still NOT within specifications additional calibration is required 1 Turn OFF the power supply September 1995 6 9 CALIBRATION AND MAINTENANCE UM344 2 2 Disconnect the test resistance decade box and connect the test millivolt source to the transmitter See Figure 6 4 3 Turn ON the power supply and proceed to section 6 1 4 2 and perform the Narrow Wide Millivolt calibration procedures 6 1 4 Thermocouple Millivolt Type Input Calibration The calibration check consists of substituting a millivolt source for a thermocouple TC or mV slidewire
77. RESS SHRT LONG ADDR ADDR POLL END 5 The MXC will next prompt for a digital method of searching Press one of the following keys SHRT ADDR F1 Press and then enter the short address 1 15 stored during configuration ENTER TRANSMITTER ADDRESS 1 15 IMPORTANT EN END The factory default setting for the short address is 0 analog mode ENTER TRANSMITTER ADDRESS LONG ADDRESS F2 Press and then enter the i long address stored in memory at the factory The long address the Dev ID shown in the On Line Menu and the XMTR ID shown by polling are the same This address can not be altered SEARCHING FOR POLL F3 Press to instruct the MXC to look for TRANSMITTER any live addresses on the multi drop network 1 15 While the MXC is searching for one or more transmitters it will display SEARCHING The MXC will then display the long and short addresses of all live transmitters on the network select one by pressing the SELECT F4 key PLEASE WAIT XMTR ID 210100044F To view each of the live transmitters press the TAOS MPE aan ADDEN LAST XMTR and NEXT XMTR keys to scroll forward and backward Each screen will show the transmitter ID number i e device ID or long address in hexadecimal tagname and short address Check IDs against user documentation to confirm that all transmitters are present LAST NEXT SEL XMTR XMTR END ECT If a problem exists in a transmitter or its wiring it will be
78. Test Terminal Ground Screw Signal Terminal Notes 1 Viewed with enclosure cap removed 2 MXC Moore XTC Communicator Signal Terminal Sensor Terminals for Thermocouple RTD Ohms or mV Input X0286981 FIGURE 4 12 Signal Loop Sensor MXC and Test Terminals 4 Connect the loop cable to the SIGNAL and terminals inside the Transmitter s enclosure Refer to Figure 4 1 4 2 or 4 3 for the needed connections for the type of Network Terminals will accommodate wire sizes up to 16 AWG Attached to both signal terminals are lugs that facilitate the connection of the MXC Communicator DO NOT connect signal wires to the lugs IMPORTANT The cable shield must be insulated from all terminals and the transmitter enclosure Refer to Section 4 3 11 for additional shielding and grounding information 5 Connect Sensor Wires Hook each stripped solid wire end or insert each crimp on terminal under the appropriate terminal screw and tighten the screw for a reliable electrical connection Refer to figures showing the needed connections as listed below in paragraphs 1 to 4 1 RTD Sensor Connect the tagged RTD leads as shown in Figure 4 13 detail A B or C depending upon type of RTD used 2 Thermocouple Sensor Connect the tagged thermocouple extension leads as shown in Figure 4 13 detail D The positive and negative thermocouple leads are usually color coded 4 32 September 1995 UM344 2 Signa
79. UE 1 Press ZOOM to display the adjacent screen Type a zoom value If the value is outside the transmitter s range a Caution 122 01 screen will appear with a selection to show the range of 105 24 n possible values F4 EXIT a 84 005 EBENEN MXC will display the trended variable within the zoom range chosen i e zoom range 10 of the transmitter range centered on the zoom value entered on the screen The screen will show Upper and Lower Range Values of zoomed range current transmitter reading trend of thirteen samples MODEL NUMBER SOET 2 EU 01 2 Press either F4 to exit to the Trend screen or ZOOM to S N EXIT return to the Enter Zoom Value screen 3 Press EXIT in the Trend screen to go to the On Line Menu TTC 101 AUTOMATIC STATUS displays the transmitter s tagname and existing status s See adjacent screen 1 Press CONT to display the transmitter s model number and software revision number Pressing EXIT will end this display SENSOR S N 0009C1 2 Press S N to show the sensor serial number Pressing EXIT will return to the Status screen 3 Press EXIT twice to go to the On Line Menu August 1995 5 25 ON LINE AND OFF LINE OPERATION UM344 2 Sus NS CHANGE SP allows you to view and change the on line NEW SETPO INT 2 setpoint of the controller 0 0000 TO 100 00 END ENTER 1 Enter new setpoint and press ENTER F4 to store the value 2 Press the CHANGE SP key
80. UM344 2 2 10 September 1995 UM344 2 INITIAL TRANSMITTER SET UP 3 0 INITIAL TRANSMITTER SET UP Before operating a Model 344 on line the instrument should be commissioned using the MXC and set up either at the bench or in the field Commissioning consists of checking that the transmitter and the loop are operational and that all configuration information is correct This section contains step by step procedures describing commissioning of the transmitter For an in depth discussion of transmitter configuration refer to Section 5 1 On Line Operation 3 1 COMMISSIONING TRANSMITTER ON THE BENCH OR IN THE FIELD A Model 344 can be commissioned either before or after installation into the loop Commissioning on the bench before installation is suggested A complete transmitter functional test can be performed and configuration procedures can be practiced If commissioning after installation install the transmitter as described in Section 4 and then return to this section Configuration data for the transmitter will be needed To commission the transmitter on the bench make the connections shown in Figure 3 1 To commission the transmitter in the field make the connections shown in Figure 3 2 or those shown in Section 4 3 3 Figure 4 1 4 2 or 4 3 Connect the MXC in the loop either across the current sense resistor or often more conveniently across the two signal terminals of the Model 344 non hazardous area only 3 1 1 Test Equipment Need
81. USER S MANUAL UM344 2 Issue 1 August 1995 XTC TRANSMITTERS SERIES 344 TERMPERATURE TRANSMITTERS USER S MANUAL UM344 2 CONTENTS TABLE OF CONTENTS SECTION AND TITLE PAGE 1 0 INTRODUCTION nre ete a ing etr e EY tha 1 1 1 1 SECTION CONTENTS 1 1 1 2 PRODUCT DESCRIPTION ee eer Rd Rene eee tu eoe ae eb E eaae ea ae RE ene e 1 3 1 3 CONFIGURATION rre RE Re ee EIS PEE He gouge tien 1 4 LA PRODUCT SUPPORT accio aeneo eap Eas duet ark apes b ida 1 4 2 0 XTC COMMUNICA TOR 5 rrr erret Coe err at e oe ee 2 1 2 1 DISPLAY asin eae SS a Oe I MM II IPIE 2 3 2 2 KEYPAD DESCRIP TION 366 aes 2 3 2 2 1 Dedicated 2 3 2 22 Function Keys ees ctp s eos e ee EXPE aber ed 2 5 2 3 LOOP CONNEC ON eee drag oth Rete eee PNE NIE 2 6 2 4 POWER eere e Een MERE 2 7 2 5 MXC SOFTWARE VERSION tero reste ee pee 2 7 2 6 MXC MENU SCREENS AND PARAMETER 2 7 3 0 INITIAL TRANSMITTER 8 222 2 3 1 3 1 COMMISSIONIN
82. Wait screen and then the Download Complete screen The new configuration is now stored in the transmitter ABORT return to the previous screen The Model 344 has two local pushbuttons labeled FS Fullscale and Z Zero located on the housing These are used to set range and damping when the controller block is configured OFF This is detailed in the following sections When the controller block is configured the ranging damping capabilities are not available In this mode the pushbuttons may be used to transfer between AUTO and MANUAL control change VALVE output and change the SETPOINT This is detailed in the following sections Local Pushbutton Operation The Pushbutton Mode must be activated as described below to use the Zero and Full Scale pushbuttons e The Pushbutton Mode is activated whenever either pushbutton is pressed and held for a minimum of 5 seconds and then released The PB annunciator on the Digital Meter will be lit while the Pushbutton Mode is active e The Pushbutton mode will automatically time out after 1 minute e Failure to hold a pushbutton ON for a minimum of 5 seconds will prevent entry into the Pushbutton mode e pushbuttons are disabled when the transmitter is placed in CONFIGURATION HOLD as when downloading a configuration Pushbuttons are enabled or disabled by jumper W1 on the Electronics Module and are enabled by the factory Jumpering pins 2 and 3
83. a careful analysis of the effects of extension lead wire resistance that can cause an error in temperature measurement A 2 wire RTD may be used when the resistance of the run of lead wire may be considered as an additive constant temperature error and the changes in lead resistance due to ambient temperature changes may be ignored The RTD sensor element is approximately one inch in length The platinum wire at each end of the RTD is terminated in insulated copper lead wire The lead wire extends beyond the sensor probe s protective metal sheath to a distance specified by the user The lead wires are terminated in Transmitter s terminal compartment when the probe assembly is mounted to the Transmitter On a remote mounted Transmitter the lead wires are terminated in the probe s connection head and extended by a second set of wires to the Transmitter The extension lead wire resistance is the sum of the resistances of both copper wires connecting the RTD element to the Transmitter Extension lead wire resistances will add to the resistance of the RTD causing a permanent somewhat higher temperature reading than actually exists at the RTD location For example if a 1 degree offset error is acceptable then the maximum 24 AWG extension lead wire length permissible would be calculated for a 100 Ohm RTD DIN Curve as follows 4 14 September 1995 UM344 2 INSTALLATION resistance change of RTD per 1 C Total length L resistivity of
84. able to safely provide additional operating current and meet the power supply specifications of Section 8 3 2 Determine needed power supply output voltage by calculating the Network Resistance and consulting Figure 4 4 It shows the minimum power supply voltage needed for the calculated Network Resistance The total Network Resistance is the sum of the Current Sense Resistance end to end Barrier Resistance f used wire resistance and any other resistances in the loop The minimum Network Resistance see Glossary required to support HART communications is 2500 The maximum resistance is 11000 1650 1200 1100 1000 800 600 500 Network Resistance OHMS SS OPERATING SS 250 lt S 0 SS 5 9 10V 12V 17V 20V 24V 30V 34V 40V42V 45V Minimum Power Supply Voltage VDC X0281781 FIGURE 4 4 Supply Voltage Versus Network Resistance 4 8 September 1995 UM344 2 INSTALLATION 4 3 4 1 Point To Point Network Figure 4 4 defines an analog mode Transmitter s operating region for the allowable ranges of supply voltage and network resistance Perform the following simple calculations to ensure that the power supply output voltage permits the Transmitter to remain within the indicated operating range Calculate the minimum power supply output voltage The minimum network power supply voltage requirement is a function of Network Resistance and full scale current 22 5 mA and is calculated by the following formula Minimum P
85. again or END F3 to exit VALVE 1 0 000 gt OOT o 10 00 CHANGE VALVE allows you to view and change the position END ENTER of the valve in MANUAL If the controller is in AUTO the valve cannot be changed 1 Enter the new valve setting and press ENTER F4 to store the new value 2 Press the CHANGE VALVE key again or END F3 STATUS AUTOMATIC to exit MAN A M toggles the controller between automatic and manual UAL AUTO control 1 Press MANUAL F1 or AUTO F2 to change state 2 Press A M key again or END F4 to exit TUNE displays controller tuning parameters for viewing or editing 1 The first screen displays the Process Setpoint and Valve settings and the controller action Press CONT F4 to continue 2 The Proportional Gain PG Time Integral TI and Time Derivative TD can be changed from this screen Press F1 F2 or F3 to display the current value and edit the 23 000 parameter 47 000 10 000 3 Press CONT F4 to continue END CONT 4 The Derivative Gain DG and Manual Reset MR can be changed from this screen Press F1 or F2 to display the current value and edit the parameter 5 Press CONT F4 to go to the previous screen Press the TUNE key again or END F3 to exit 5 26 September 1995 UM344 2 ON LINE AND OFF LINE OPERATION 5 2 OFF LINE OPERATION 5 2 1 Using Off Line Operations to Access an Archive SELECT FUNCTION FIND ARCH TEST XM
86. alue is stored If the new ZERO value would shift the FULLSCALE value past the sensor limit the new FULLSCALE value is automatically set to the appropriate sensor limit except in the case where this would produce a span that is ON LINE AND OFF LINE OPERATION too small in which case no new ZERO or FULLSCALE value is stored UM344 2 3 Change FULLSCALE range value 1 Supply FULLSCALE value If the process variable currently being reported by the Transmitter is not the desired FULLSCALE value then the process must be manipulated by an operator to arrive at the desired value 2 Activate the Pushbutton Mode Press and hold for 5 seconds or more the FULLSCALE pushbutton then release the pushbutton 3 Enter FULLSCALE value Press and release the FULLSCALE pushbutton The new 100 range value is stored in memory If an optional Digital Meter is installed observe that the PB annunciator in the display extinguishes Normal Mode NOTE Changing the FULLSCALE range value does not affect the ZERO range value If the input value is beyond the sensor limit or the span is too small no new FULLSCALE range value will be stored 4 Ifa damping value change is not required return the protective cover over the pushbuttons September 1995 UM344 2 5 1 3 3 Local Pushbutton Damping Adjustment Controller OFF August 1995 ON LINE AND OFF LINE OPERATION Adjusting the damping changes the value of the digital f
87. and Full Scale temperatures For an Ohm type input consult user supplied data and record the resistance of the Zero and Full Scale points 3 Set decade box to resistance corresponding to Zero Scale value 4 Apply power and read indicated Zero Scale value Perform either A or B and compare the reading to the specifications in step C A Digital Meter installed read the indicated Zero Scale value on the Meter B Digital Meter not installed perform the following 1 From the MXC execute the FIND XMTR program Refer to Section 2 as necessary 2 When the MXC finds the transmitter press the dedicated TRANS VAR S key on the MXC and read the indicated value C Accuracy specifications RTD input Equal to or less than 0 1 C of Zero and Full Scale temperatures Equal to or less than 0 02 of selected span in Deg C the higher value will be the accuracy tolerance 6 6 September 1995 UM344 2 CALIBRATION AND MAINTENANCE Ohm input wide range Equal to or less than 1 3 ohm of Zero and Full Scale ohmic values Ohm input narrow range Equal to or less than 0 45 ohm of Zero and Full Scale ohmic values Equal to or less than 0 02 of selected span in ohms the higher value will be the accuracy tolerance 5 Set decade box to resistance corresponding to Full Scale value and check accuracy of indication against specifications listed in step 4 If calibration is required retain
88. ange the setting press QUIT F3 to exit without changing the setting Press SEL CONT F4 to return to the Function Block menu The controller function block provides an extensive range of Proportional Integral Derivative functions including PID PD and ID For more detailed descriptions of these controller functions refer to the appendix 1 At the CONTROLLER BLOCK Screen press SELECT F4 2 Press NEXT OPTN F2 to turn the controller function ON or OFF 3 Press SEL CONT F4 to configure the Controller Parameters or SEL END F3 to return to the Function Block menu 4 Atthe CONTROLLER TYPE screen use LAST OPTN F1 and NEXT OPTN F2 to scroll through the PID PD ID options Press SEL CONT F4 for the controller ACTION screen 5 Press NEXT OPTN F2 to select either a DIRECT or REVERSE acting controller Press SEL CONT F4 to continue to the Proportional Gain Time Integral Time Derivative Derivative Gain and Manual Reset blocks 6 Press EDIT F1 to edita parameter Press ENTER F4 to change a parameter or QUIT F3 to exit without changing the parameter 7 Press SEL CONT for the MANUAL RESET TRACK screen Press NEXT OPTN F2 to select YES or NO 8 Press SEL CONT F4 to return to the Function Block Menu This completes configuration September 1995 UM344 2 ON LINE AND OFF LINE OPERATION As described in the previous sections there is a Function Block Menu in configuration mode from which ba
89. archive function or press CONT to continue Go to step 4 If the configuration at this archive number is no longer needed press CLR ARCH to erase it Press END to exit this screen e To review or edit the configuration press EDIT ARCH Press CONT and select a function block to view or edit then return to this section and go to After configuration is complete step 1 August 1995 ON LINE AND OFF LINE OPERATION UM344 2 SELECT X MITTER TYPE 4 Use PREV and NEXT to select the transmitter type TEMP CONTROLLER Temperature then press SELECT The default configur SEL ation for a temperature transmitter will be loaded into the PREV NEXT END ECT Off Line Memory of the MXC 5 The next screen shows the archive number to be edited Press either EDIT ARCH to begin editing or END to select another archive number ARCHIVE 97 DEFAULT SELECT A FUNCTION EDIT ARCH 6 Press CONT to continue and select a configuration block for editing Refer to Section 5 1 1 to edit configuration parameters Press QUIT to return to the previous screen CONFIGURATION After configuration is complete COMPLETE RE 1 Press END in the Function Block menu to access the QUIT SAVE VIEW following three choices from the adjacent screen QUIT go to the Main Menu and end configuration REVIEW return to the Function Block menu to make any changes or additions Refer to Section 5 1 1 as necessary SAVE TO ARCHIVE 97 DEFAULT SAVE show the ar
90. ate severe environmental conditions The conditions at each transmitter location must be within the specifications stated in Section 8 3 5 The Transmitter is designed to perform in harsh conditions however it is prudent to locate a Transmitter to minimize the effects of heat vibration shock and electrical interference CAUTION Exceeding the specified operating temperature limits can adversely affect performance and may cause damage 4 3 INSTALLATION CONSIDERATIONS Sections 4 3 1 and 4 3 2 outline basic considerations needed to achieve a successful mechanical electrical installation The remaining sections then provide detailed pre installation information 4 3 1 Mechanical e Select the sensor input thermocouple millivolt RTD or resistance Refer to Section 8 2 for sensor accessories e Determine if an optional digital meter for local monitoring of transmitter output is required Refer to Section 8 1 for model designation or 8 2 for accessory part numbers e Determine physical mounting of Transmitter Consider e Using supplied bracket for pipe or wall mounting Refer to Sections 4 4 1 and 4 4 2 e Transmitter to process mounting Refer to Section 4 4 3 e Clearance for installation and maintenance and for reading the optional digital meter Refer to Figure 8 3 e Need to rotate optional digital meter for viewing ease Refer to Section 4 4 4 Refer to Figure 8 3 for transmitter dimensions and the figures in Section 4 4 for ty
91. be coated with a wet paste type anti seize compound such as Never Seez by Emhart Bostik Inspect the enclosure O ring for damage It is not recommended that the enclosure s electronics module compartment be opened for inspection 6 2 5 Transmitter Calibration An annual calibration check should be performed to ensure that the transmitter is within specifications Refer to Section 6 1 for details 6 3 TROUBLESHOOTING This Section provides guidance and procedures to assist in identifying and correcting a malfunctioning Model 344 Temperature Transmitter Section 6 2 1 lists needed tools and equipment All documentation associated with the transmitter including piping and loop wiring diagrams and configuration documentation should be available to maintenance personnel to facilitate troubleshooting NOTE The Moore XTC Communicator MXC is approved for use in non hazardous areas only 6 3 1 Preliminary Troubleshooting Symptoms and messages resulting from a transmitter malfunction can expedite the troubleshooting process Messages are displayed on an MXC screen and the optional digital meter The following paragraphs explain the displayed messages and other visual indications that show the status of the loop or the status of the transmitter A Moore XTC Communicator Use the MXC s STATUS key to interrogate a transmitter and display a FAILSAFE message caused by a transmitter failing a self diagnostic test This will identify the sour
92. ble Range Process Variable Units Auto Reranging Temperature Controller Function Blocks September 1995 A 10 UM344 2 APPENDIX A FUNCTION BLOCK DESCRIPTIONS September 1995 11 UM344 2 APPENDIX B HAZARDOUS AREA INSTALLATION DRAWINGS B 0 APPENDIX B HAZARDOUS AREA INSTALLATION DRAWINGS This Appendix contains four Figures that present wiring and barrier selection information for installation of a Model Series 344 Transmitter in a hazardous location Refer to the barrier manufacturer s installation instructions and the following Figures when installing or servicing a Transmitter in a hazardous location The installer should carefully select barriers based on the required protection loop wiring manufacturer s barrier performance data and the data in the following Figures Entity parameters are stated in Figure B 1 September 1995 B 1 APPENDIX B HAZARDOUS AREA INSTALLATION DRAWINGS UM344 2 B 2 September 1995 UM344 2 APPENDIX B HAZARDOUS AREA INSTALLATION DRAWINGS FIGURE B 1 Model 344 Hazardous Location Installation Dwg 15032 3441 Sheet 1 of 4 September 1995 B 3 APPENDIX B HAZARDOUS AREA INSTALLATION DRAWINGS UM344 2 FIGURE B 2 Model 344 Barrier Selection Dwg 15032 3441 Sheet 2 of 4 B 4 September 1995 UM344 2 APPENDIX B HAZARDOUS AREA INSTALLATION DRAWINGS FIGURE B 3 Model 344 Hazardous Location Installation Dwg 15032 3441 Sheet 3 of 4 September 1995 B 5 APPENDIX B HAZAR
93. bration is described in Section 6 The screen selections to choose the options of configuration calibration and loop checkout are found on the On Line menu screen The test routines available through the MXC are used to verify that the Transmitter the MXC and the loop are all working properly Whenever a problem with any of the instruments or the loop is suspected test the equipment to make sure there are no component failures The test functions can be accessed in two locations in the MXC and these are described below PRESS ANY KEY TO CONFIRM CONTACT END TEST 1 Press and momentarily hold the ON key The Main Menu will appear 2 Press TEST MXC F3 to display the MXC Self Test screen 3 Press one of the following keys TEST KEYS Press to test MXC keys At the next screen press any key on the keyboard and the INITIAL TRANSMITTER SET UP 3 6 screen will display a character associated with that key The screen will show up to 10 characters before erasing the oldest UM344 2 September 1995 UM344 2 INITIAL TRANSMITTER SET UP TEST SCRN Press to test all screen segments When this key is pressed the MXC displays the Begin message to the left then lights all the ABOUT TO BEGIN segments turns them all off displays the Completed message and then returns to the original test screen MXC SCREEN TEST END Press to exit the test mode and return to the MXC SCREEN TEST Main Menu
94. cator Signal Terminal A Sensor Terminals for Thermocouple RTD X02869S1 Ohms or mV Input FIGURE 1 2 Terminal Connections 1 2 PRODUCT DESCRIPTION The Model 344 Temperature Transmitter shown in Figure 1 1 is a microprocessor based measurement and control device which combines accurate reliable temperature measurement and a PID controller in one unit The Transmitter accepts an RTD thermocouple millivolt slide wire or resistance sensor input It contains a custom ASIC Application Specific Integrated Circuit which contains standard temperature calibration curves for J K E T R S B and N type thermocouples and US DIN curves for 100 200 and 500 ohm Platinum RTDs The sensed signal is linearized and corrected for ambient temperature changes by the microprocessor and then converted to an equivalent 4 20 mA or HART Highway Addressable Remote Transducer digital output signal The analog output signal HART digital communications and 24 Vdc power typical are carried on a twisted pair 2 wire cable The HART digital communication signals are superimposed AC coupled onto the 4 20 mA loop current allowing simultaneous communication with the Transmitter without compromising loop integrity A digital meter is available when local indication of transmitter output is required Loop wiring connections made to the electrical terminals shown in Figure 1 2 A transmitter can be configured to operate in either an analog mode or a di
95. ce Trickle Current TC m A Q 5 92 52 uA Sink TC RTD CMOS cc x Analog V Switch Ato D Converter Reference Junction Temperature Input 2 Sensor 2 Pole Filter gt Input 1 SCLK Data Control Data Control Isolation V tol A Converter LoOP SIGNAL Converter Microcontoller Analog Meter Earlier XTCs Only 7 2 uC 2 Pole Zero Crossing 0282951 yaad Digital Meter FIGURE 7 1 Model 344 Electronics Module Block Diagram HART Signal September 1995 UM344 2 CIRCUIT DESCRIPTION 7 2 THEORY OF OPERATION The transmitter input signal obtained from a Thermocouple TC Millivolt mV Resistance Temperature Detector RTD or Resistive Ohm source is wired to the transmitter s signal input terminal block The standard calibration curves for J K E T R S B and N type Thermocouples and US DIN curves for 100 200 and 500 Platinum RTDs are stored in memory The input is corrected for ambient temperature effects linearized and converted to a 4 to 20 mA or HART digital output signal The specific type of input signal is selected during configuration 7 2 1 Thermocouple Millivolt TC mV Input The range limit for a millivolt input signal from a TC or mV source is 10 mV to 100 mV Since input circuits for mV and TC inputs operate identically a TC input will be described
96. ce of error through an error message described in Table 6 1 and Section 6 3 2 1 paragraph A CALIBRATE TEST Transmitter self diagnostics are executed by selecting TEST CAL TEST END from the MXC s CALIBRATE TEST screen If the test is failed a message is displayed Refer to Section 6 3 2 1 paragraph A for details 6 16 September 1995 UM344 2 CALIBRATION AND MAINTENANCE MXC STATUS and Diagnostic Displays require fault free HART communications between the MXC and the transmitter In the event of communication problems the MXC can display communication error messages Refer to Section 6 3 2 1 paragraph B for details B Optional Digital Meter The Model 344 routinely performs self diagnostic tests and will display the message FAIL if a fault is detected If the controller function is OFF the LCD will flash whenever the process temperature is over or under the range limits by 3 C Console Station Work Station or Controller Troubleshooting information can be displayed on a video monitor associated with a console station or work station that is configured to monitor the loop Refer to the literature supplied with the station A panel mounted controller or other station accepting a loop signal generated by a transmitter or using HART signals to communicate with a transmitter can display information about the status of the loop and transmitter Again refer to the literature supplied with the station 6 3 2 Troubleshooti
97. cepted Error types are Vertical Parity Error Overrun Error Framing Error Longitudinal Parity Error and Buffer Overflow POSSIBLE CAUSE CORRECTIVE ACTION Possible Cause Noise on Loop Press RETRY F3 at least 3 times waiting at least 1 minute between retries If Wires not successful continue troubleshooting Loop Wiring Failure Check for 12 Vdc minimum across SIGNAL terminals in transmitter terminal compartment Check polarity of loop wiring Check that loop resistance is between 250Q and 11000 to support HART communications Check for loose or broken loop wiring at power supply terminals Supply Barriers if used junction boxes and transmitter terminal compartment Check for disconnected or broken Current Sense Resistor Check for short between cable shield and SIGNAL loop wire Check for accumulation of moisture in transmitter terminal compartment Check for the proper type and length of loop cable and for electrical interference between the loop cable and any adjacent cables in a cable tray or conduit Loop Power Supply Failure Check power supply output voltage 17 Vdc minimum 42 Vdc maximum Check power supply for blown fuse or tripped circuit breaker Transmitter Electronics Failure Replace Electronics Module Refer to Section 6 5 2 September 1995 6 21 CALIBRATION AND MAINTENANCE UM344 2 TABLE 6 4 Message Field Device Malfunction This message results when after having successfully established
98. chive number and tagname of the NEW current configuration and provide the option to save the YES ARCH configuration either under the current archive number or under a new number Go to step 2 2 Press YES in the Save Archive screen to save the archive under the current number Perform one of the two steps below ERROR ARCHIVE TYPE sug DOESN T MATCH THE e If the new configuration will overwrite an existing TRANSMITTER TYPE archive the MXC will provide a warning message before CONT the store operation is performed Press ENTER to continue WARNING TAG NAME USED ENTER NEW TAG If the tagname of a new configuration has already been NAME assigned to an archived configuration a WARNING CONT screen appears Press CONT to move to the TRANS MITTER ID block and display the tag selection If the tagname is not to be changed press either SEL END to return to the Save Archive screen or SEL CONT to return to the previous screen 5 28 September 1995 UM344 2 5 2 2 Using an Archive in On Line Memory CONFIGURATION MODE EDIT EDIT ARCH CONF ENTER ARCHIVE 0 99 OR TAG EN END TER ARCHIVE 97 DEFAULT SELECT A FUNCTION EDIT ARCH WARNING ARCHIVE CONTAINS NO DATA A BORT CONT ERROR ARCHIVE TYPE DOESN T MATCH THE TRANSMITTER TYPE CONT August 1995 ON LINE AND OFF LINE OPERATION If the tagname is changed press SEL END or SEL CONT to return to the original Save screen Follow the
99. ck when the controller is in manual In either case the controller will always go back to AUTO with the output equal to the feedback The reset value will then return to the value of MR with the time constant established by the integral time TI Since the default value of TI is 100 min it should be reduced e g 0 01 min when using this controller type The TI Time Constant is selected for the rate at which the controller should return to normal operation after switching from manual to auto Bear in mind that the TI time in the PD Controller is not an integral time and does not affect control stability If the derivative time TD is set equal to 0 0 the derivative section is eliminated September 1995 A 5 APPENDIX A FUNCTION BLOCK DESCRIPTIONS Equations O GE R MR AUTO R TIs 1 MANUAL R F GE O F IF MRT YES MR F UM344 2 ID Controller Controller Status On Off Controller Type PID PD ID ACUODL ei ge e Reverse Direct Proportional Gain PID amp 0 01 to 100 0 Time Integral rtt net 0 01 to 1000 min repeat 0 01 to 100 0 min Derivative 0 0 00001 1 E 1 00 to 30 00 Manual Reset PD 0 0 to 100 0 Manual Reset Tracking PD No Yes X02879S0 came a
100. contain the following e A standard Bell 202 Modem that employs Frequency Shift Keying FSK for remote communications via the HART protocol A Microcontroller that Controls communications Corrects and linearizes the sensor input signal Stores configuration data configuration data is stored in nonvolatile EEPROM memory in the Microcontroller and is retained when power is interrupted permitting the Transmitter to become functional upon power up Performs re ranging and damping value selection upon input from user actuated local Zero and Fullscale pushbuttons e A custom ASIC Application Specific Integrated Circuit that provides clock to the Microcontroller Serial D A conversion of the Microcontroller s signal to drive the V I Converter A Low Voltage Power Supply with current limiting that provides DC operating power A power supply Voltage Monitor that generates a Microcontroller Reset signal when the Network Loop supply voltage is interrupted Bandpass Filter that passes HART signals and rejects low frequency analog signaling e A Voltage to Current Converter V D that converts the output of the ASIC s D A to a 4 to 20 mA loop output signal Reference junction temperature sensor that measures and regulates the temperature of the TC screw terminal September 1995 7 1 CIRCUIT DESCRIPTION 842 P Channel Upscale FET Switch IRTDI Downscale A 104 uA Burnout 2 Burnout Sour
101. d RTDs for 344T Temperature Elements ASLI4E ASLI4S ASLIAR JADS MR 0 ASLI4B B JADILMB 0 ASLIAN RTD 14 100 ohm platinum RTD DRTDI4 100 ohm platinum RTD Alpha 0 00385 Alpha 0 00385 TABLE 8 5 Thermocouple Wire UP ALPTW 16 7 UPALPTW20JX J FUP ALPTW 16 TX UP ALPTW 20 TX 71 UP ALPTW 16 KX FUP ALPTW 20KX KO i Ei UP ALPTW 16 EX UP ALPTW 20 EX UP ALPTW 16 SX UP ALPTW 16 RX PUP ALPTW 20RX_ R UP ALPTW 16 BX UP ALPTW 20BX_ BU September 1995 8 5 MODEL DESIGNATION AND SPECIFICATIONS UM344 2 8 3 SPECIFICATIONS The following specifications are for all transmitter models except as noted 8 3 1 Mechanical Transmitter 8 Figure 8 3 Mounting Bracket Dimensions Supplied Bracket Figure 4 5 Weight approximate Transmitter with Display eese 8 5 Ibs 3 9 kg Supplied 1 5 Ibs 0 7 kg 8 3 2 Functional and Performance Range Sensor Input 1 See Table 8 6 TABLE 8 6 Sensors Type Range Span and Accuracy SENSOR INPUT INPUT RANGE MIN MAX SPAN C F KS F RTD 2 3 4 Wire 200t0 850 328 to 1562 10 1050 18 1890 20010850 328 to 1562 20 1050 36 1890 1000 Pt DIN 0 00385 2000 Pt DIN a 0 00385 5000 Pt DIN 0 00385 100Q Pt U S 0 003902 2000 Pt U S
102. de S 1 1 See Note 2 gt MXC 250 Non Hazardous Hazardous TTT Location Location xe See Note 6 X Note 1 lata gee es Ne SIE OY y EN Model 352 424 e bwba fy Rear X 52 See Note 5 7 Terminals NGHE E23 25 Ada i43 ONES mo a See Note 4 A5 H B arcc T TO c N Signal Test ON B5 24 14 ae Y NES cal Supplyand od d e o a Se A iG 27 4 Return Barriers 2 See Shown Above X EA ER ERE See Note 3 w Dm 0 Notes Model 344 2 M Terminals 77 55 1 Network resistance equals the sum of the barrier resistances and the current sense resistor Minimum value 250 Ohms maximum value 1100 Ohms 2 Connect the M XC a Secondary Master to the loop only in the non hazardous location The MXC is a non polar device 3 Interconnect all cable shields and ground only at the power source 4 Model 352 Rear Terminal Assignments A4 Analog Input 1 Al1 5 Analog Input Common AIC B5 Two Wire Transmitter Power 426 Vdc AG Case Safety Ground See Installation And Service Instruction SD352 or User s Manual UM352 1 5 For access to Model 344 terminals remove enclosure end cap 0286751 6 Maximum loop cable length calculated by formula in Section 4 3 5 FIGURE 4 2 Model 352 SLDC and Model
103. e range Total Digital Accuracy D A Converter Accuracy Analog Update Rate 2 10011 500 milliseconds nere E ee ris 0 to 120 seconds Outputs VAN OTET OT TEE me tete ee oes Two wire with digital communication superimposed on the 4 20 mA signal Max less than 25 mAdc Min greater than 3 84 mAdc sce HART protocol for field communication bus 8 8 September 1995 UM344 2 Power Supply Minimum Compliance Voltage Network Current Sense or Loop Resistance Rp iere Maximum Loop Voltage esee ese e AAE ES T TE Impedance E Power Supply Effect inier et ee rebai snet Indication optional Transmitter Input Capacitance Network Topology Point To Point Transmitter Quantity 001222 Network Signal and Connection Network Resistance ssssccecceeeeeeeeennneeeees Multi Drop Transmitter Quantity esee Network Signal and Connection Network Resistance 1111121 Transmitter I O Isolation Between Input Output Terminal Between Case and Networking Wiring 8 3 3 Two Wire Cable Conductor Size for Network Length Less than 5
104. eat care when being installed in conduit Decalibration of the wire can result by cold working the metal conductor an effect that can occur when the wire is drawn through a conduit or damaged by rough handling or vibration 4 4 5 2 Cables 4 4 Mark or tag each signal cable conductor as either SIGNAL or SIGNAL to ensure correct connection at the Transmitter Mark or tag each sensor wire to be connected to a remote mounted transmitter to indicate its specific transmitter terminal number 1 2 3 connection EXAMPLE 3 wire RTD tag descriptors RTD 1 RTDI 2 RTD 3 Thermocouple tag descriptor TC 1 TC 3 Use pulling grips and cable lubricants for easier cable pulling Pull cable through conduit into Transmitter terminal compartment Do not exceed the maximum permitted pulling tension on the cables Maximum tension is normally specified as 40 of the cable s breaking strength Do not exceed the maximum conduit fill specified by the National Electric Code 5 3 Access to Transmitter Terminal Compartment Two terminal strips for signal loop MXC test milliammeter and sensor connections are located inside the shorter enclosure cap see Figure 1 1 To access the terminal strips simply unscrew the enclosure cap protecting the terminal compartment This completes the mechanical installation 4 30 September 1995 UM344 2 INSTALLATION 4 5 ELECTRICAL INSTALLATION This section describes loop wiring
105. ect Mounting to 4 20 4 4 4 Local Digital Display Installation Repositioning and Removal 4 23 4 4 5 Electrical Conduit and Cable Installation eere 4 26 AA Dy ls Conduit 245 eet o lutea t d pt doc Ge tutae fud ned hides 4 26 S whiter iee ete deed ted 4 28 4 4 5 3 Access to Transmitter Terminal Compartment eene 4 28 45 BLECIRICAEINSTAELAXTION bee ett e e d aut erp ades 4 29 4 6 HAZARDOUS AREA INSTALLATION 2 204222222 200 2 00 0 001 4 33 5 0 ON LINE AND OFF LINE 5 1 ON LINE OPERATION rea eaae petto ee MU pas iba epo 5 1 5 1 1 Using the MXC for 9 5 1 5 LII Sensor Input Blocken terere eene eee e Roses 5 3 5 1 1 2 Operator Display 5 5 3 1 1 3 Transmitter ID Block ciere rete aeree e Rb Te eeu ee tee re eaae ues 5 6 21 14 Output Block e aer ra Er RU REN a E Eso 5 7 SALIS Nino do eH C ees 5 7 5 1 1 6 Setpoint Track and Hold 5 8 5 1 1 7 Transfer Block etre ee eet rane eene eren
106. ection 6 1 Before placing the Transmitter on line check that the proper configuration information has been stored 1 Establish communication between the Transmitter and MXC Using the MXC screens compare the uploaded configuration with user s configuration documentation September 1995 UM344 2 September 1995 INITIAL TRANSMITTER SET UP 1 At the On Line Menu press CONFIG to access the function blocks Continue through the menu sequence until reaching the Function Block Menu 2 Check the information in the eight function blocks listed below Edit values as needed while reviewing 3 Archive the revised configuration in the MXC 4 Download the configuration to the Transmitter TRANSMITTER FUNCTION BLOCKS SENSOR INPUT Input Type Measured Variable Units Range Lo amp Hi Damping Burnout Direction OPERATOR DISPLAY Process Variable Units Range Lo amp Hi Auto Rerange Local Display Code TRANSMITTER ID Tag Descriptor Message Date Device Serial Number Short Address OUTPUT Failsafe Level ALARM Alarm 1 Enable Disable Alarm 1 SP Alarm 1 Type Alarm 2 Enable Disable Alarm 2 SP Alarm 2 Type Self Clearing NaKS Alarms Out of Service 3 9 INITIAL TRANSMITTER SET UP 3 5 CHECKING TRANSMITTER OUTPUT VIEW WHICH VARIBLES XMTR CONT 63 301976 50 000 10 000 76 534 deg F 4 8377 mA 76 534 deg F 3 10 UM344 2 SP TRACK amp HOLD Tracking Setpoint PUSP
107. ectronics Failure Check transmitter STATUS If a FAILSAFE message is posted refer to Section 6 3 2 1 paragraph A for troubleshooting procedures If STATUS is OK select LOOP OVRD loop override Verify loop by setting output current to 4 12 and 20 mA read on Digital Meter or ammeter connected to TEST terminals Carefully observe that the selected currents remain steady If current cannot be set or is unstable replace the Electronics Module See Section 6 5 6 3 3 Diagnosing a Defective Digital LCD Meter The optional LCD is functionally tested during a transmitter power up or master reset It is also tested when the MXC TEST program transmitter self diagnostics is executed The 4 second test activates all the legends and numerical segments of the LCD However if the LCD fails the test the failure is not reported by the self diagnostics The LCD must be observed when performing the MXC TEST program to confirm its test If the LCD is not functioning correctly use an on hand spare LCD to prove the suspect LCD is defective as follows September 1995 6 25 CALIBRATION AND MAINTENANCE UM344 2 Turn off power to the transmitter and remove protective enclosure cap to access the LCD Snap a grounding wrist strap on wrist and connect ground clip to transmitter or mounting bracket As shown in Figure 4 10 disconnect cable from Digital Meter Board and slide cable from cable slot in Board Connect the cable to the spare LCD Re
108. ed TEST EQUIPMENT DESCRIPTION see Specifications Section 8 3 2 Power Supply 12 to 42 Vdc see Section 4 3 4 Multimeter Accuracy of at least 05 to check calibration Current Range 4 to 20 mA to measure loop current Voltage Range 10 40 Vdc to measure power supply and loop voltage 250 to 1100Q to support HART digital communications Configuration Device Moore XTC Communicator MXC User Configuration Configuration data for transmitter under test NOTE Test equipment should be 2 to 10 times more accurate than the desired transmitter accuracy September 1995 3 1 UM344 2 INITIAL TRANSMITTER SET UP 7 r ro 8 sl m 1 Ss S DE as 22 221 2 RE MEM Ed BETIS I 1 E Sz SST ae X9 pen 5 1 1 Sq 2 3 Sm S ar S 8 24 a t Hc Pd gem p LL Oina 2 33 1 EN EM Lol 1 1 l d g IM X epe em GET RET 4 ry 141 EN S ILLI gt ____ No BEN pu 9 Lc 4 t e i eee eS qu dd 0 X uS Fou E 2 uu MU d PRI 1 dm TN S amp ji NS e eo uncle 1 SS Ge JAY 11 t gt p 2 2 p 72 ue 07 2 Lr Lome 1 gt 2 4 4
109. ell Assembly 9 00 6 P 2 i 22 9 T 15 2 ra 10 T Des 3 Wire RTD Thermowell Assembly X02815S0 Note Typical Well Lengths in Inches Centimeters FIGURE 8 1 Typical TC and RTD Thermowell Assemblies without Heads A 4 11 See Note Note X02816S0 Typical Well Lengths in Inches Centimeters FIGURE 8 2 Typical TC or RTD Assembly with Head Notes for Figures 8 1 and 8 2 1 A Dimension Extension Assembly Joins connection head or transmitter to thermowell 2 F Dimension Process Connection Provides connection to process vessel 3 U Dimension Probe The length of the thermowell assembly inserted into the process immersion 8 4 September 1995 UM344 2 MODEL DESIGNATION AND SPECIFICATIONS Table 8 4 provides a list of replacement thermocouples and RTDs for Model 344T series thermal sensors In critcal applications it may be desirable to have on hand spare elements All thermal elements are 1 4 in diameter with a 31655 sheath and grounded measuring junction thermal elements are spring loaded The length of the assembly computed as A F U must be supplied For cast aluminum or cast iron connection heads add 2 to the computed length for T Cs and RTDs Table 8 5 lists thermocouple wire for common thermocouple types Thermocouple wire is twisted shielded pair 20 gauge PVC insulated RTD wire is 16 or 20 gauge 3 wire twisted shielded TABLE 8 4 Replacement Thermocouples an
110. eptember 1995 UM344 2 5 1 3 2 Local Pushbutton Input Ranging Controller OFF August 1995 ON LINE AND OFF LINE OPERATION The low and high process temperatures selected as the 0 and 100 span points may be applied to the transmitter and stored in the EEPROM using the ZERO FULLSCALE pushbuttons This procedure assumes the transmitter is field mounted to an operating process If the transmitter does not contain an optional Digital Meter to report the process variable other instrumentation on the Network must be available to provide this information 1 Open the sliding cover on top of the Transmitter s housing to access the ZERO FS pushbuttons See Figure 1 1 Change ZERO range value D 2 3 Supply new ZERO value If the process variable currently being reported by the Transmitter 1s not the desired ZERO value then the process must be manipulated by an operator to arrive at the desired value Activate the Pushbutton Mode Press and hold for 5 seconds or more the ZERO pushbutton then release the pushbutton Enter ZERO Value Press and release the Zero pushbutton The new 0 range value is stored in memory If an optional Digital Meter is installed observe that the PB annunciator in the display extinguishes Normal Mode When a new 0 value is set the Transmitters 100 value is automatically shifted to maintain the original span except as follows If the process is out of range no new ZERO v
111. erature deg C The output display code determines which variable will be displayed on the digital meter There are three options for the output display code 1 Measured Variable When measured variable is selected the input will be displayed in measured variable units 2 Percent When percent is selected the input will be displayed as 0 100 of the process variable range September 1995 1 APPENDIX A FUNCTION BLOCK DESCRIPTIONS UM344 2 3 Process Variable When process variable is selected the input will be displayed in process variable units Auto Rerange automatically rescales the Process Variable in proportion to the Measured Variable in the Sensor Input Block It will also rescale the Measured Variable range if the Process Variable range is changed For example if the Measured Variable is set at 0 100 Ohms and the Process Variable is set at 0 500 deg C then a change in Measured Variable range to 0 200 Ohms will result in the Process Variable being automatically rescaled to 0 1000 deg C A 3 TRANSMITTER ID BLOCK retire 8 Character ASCII hisses ete pee 16 Character ASCII MESSAGE ar ai 32 Character ASCII Tag Date eonig eden tpg tie ER DD MM YY Description Device Serial Number 8 Digit 0 to 16777215 Message Short Address Device Serial Number Analog Mode ea acs 0 EAT Digital Mode
112. es Dampit oed AUS 0 to 120 seconds Burnout Upscale or Downscale OPERATOR DISPLAY BLOCK Local Display Code Percent Process Variable Measured Variable September 1995 A 7 APPENDIX A FUNCTION BLOCK DESCRIPTIONS PV Range Process Variable Units Auto Rerange UM344 2 LO and HI range values 4 ASCII character tag e g CEL FAHR Enable or Disable September 1995 UM344 2 TRANSMITTER ID BLOCK MESSA8 6 octets fe 0 5 User ID Short Address 22 1 OUTPUT BLOCK Failsafe ALARM BLOCK Alarms 1 and 2 02 211 Alarms 1 and 2 02 01 Alarms 1 and 2 0 22 2 22 Self Clearing Naks Alarms Out Of SP TRACK amp HOLD BLOCK Tracking Set Point d rappels A M TRANSFER BLOCK Power UP Auto Mode Only sss Power Up Valve CONTROLLER BLOCK Controller Controller Type Controller
113. et gens hanes Enable Disable Alarm 1 Setpoint 2211122 999999 to 999999 Alarm High Low Dieu mh oae oe Enable Disable Absolute Alarm 1 Alarm 2 Setpoint 1122 999999 to 999999 EE Alarm 2 aee tute retro ent High Low Self Clearing a aaa On Off Alarms Out Of Service On Off This function block includes 2 absolute alarms The action of these alarms can be selected as HI or LO The setpoint for the alarms is entered in the units selected in the operator display block The Not Acknowledge bit NAK in the alarm status word is set whenever the alarm goes from a no alarm to an ALARM condition When the ALARM condition clears the NAK bit will reset if the Self Clearing NAKS paramter is set to ON If the Self Clearing NAKS parameter is set to OFF then the NAK but must be reset via a HART command The Alarms Out of Service parameter determines if the out of service bit in the alarm status word is set A 6 SETPOINT TRACK AND HOLD BLOCK Tracking Setpoint 2000001 11 Yes No Power Up Setpoint 999999 to 999999 SP Track and Hold PV This function block is a setpoint track and hold block and its operating value can be changed from the pushbuttons of the XTC or from the CHANGE SP key of the MXC This function block can
114. eterMaleFemaleSpacer325 1 22 15 65 064 Digital MeterMountingBracket_ 1 4 16069 96 Digital Meter Cable Assembly 01 2 16069 81 Digital Meter Board Assembly 0 1 40 Seria NumberLabel 1 RAL SD ONE gt 15980 Enclosure Cap Retention Device not shown For EExd Xmitr e O OS Connection Diagram Label HARDWARE 5 8 32 x 0 25 Binding Hd 2 x 0 188 Type U Drive Screw Tri Round Pan Screw 6 32 0 312 4 40 x 0 313 Binding Hd 1 7238 4 Medium Lockwasher Nje e e 20 21 26 Notes Refer to Model 344 User s Manual UM344 2 before servicing the transmitter e See drawings on following page for transmitter disassembly and Item number reference e An identifies a recommended on hand spare part When ordering a spare or replacement part provide the transmitter s complete model number serial number and other nameplate information 9 95 Supersedes 8 91 Ref UM344 2 PARTS LIST XTC MODEL 344 TEMPERATURE TRANSMITTER CONTROLLER Drawing No 15965 639PL USER S MANUAL ADDENDUM UMA344 2 1 Issue 1 March 1996 CONTROLLER MODE INSTALLATION WIRING INVOLVED USER S MANUAL UM344 2 Issue 1 September 1995 XTC Transmitters Series 344 Temperature Transmitters User s Manual ADDITIONAL MATERIAL The wiring diagram on the next page is for a Model 344 Transmitter Controller configured for controller operation
115. ets accept male conduit fittings Refer to the Transmitter s nameplate and Section 8 1 to determine whether conduit threads are 2 14 NPT or M20 x 1 5 Seal NPT fittings with TFE PTFE tape seal M20 fittings with a soft setting sealing compound rated for at least 105 C 221 F When routing conduit avoid areas that might subject the conduit to chemical or physical abuse or areas with high EMI RFI conditions Long sensor cable runs should be installed in conduit between the transmitter and sensor e Install sensor cable in conduit in areas of high electrical interference Install conduit for field wiring e Ifa high humidity environment can exist and the transmitter is located at a low point in the conduit run install drain seals at the transmitter s conduit inlets to prevent condensation from entering the Transmitter See Figure 4 11 e Remove all sharp edges or burrs from conduit that may damage wires 4 28 September 1995 UM344 2 INSTALLATION Plug unused Conduit entrance for field wiring DC power Drain Seal Conduit Drain Installation For explosion proof installation use conduit seal Crouse Hinds type EYS or equivalent on wiring 1227 Conduit for ox wiring DC power Plug unused Entrance 0282451 Explosion Proof Installation FIGURE 4 11 Conduit Drain and Explosion Proof Installations September 1995 4 29 INSTALLATION UM344 2 Thermocouple wire must be handled with gr
116. extension grade wire is made from the same materials as thermocouple wire however its use is restricted to a lower range of temperatures For extension grade wire the ambient temperature at the thermocouple head connection point may not exceed the temperature limits of the extension wire 2 Cable Recommendation FEP insulated and jacketed twisted and shielded Wire size should be 16 to 20 AWG September 1995 4 13 INSTALLATION UM344 2 B RTD Ohm Sensor to Transmitter Extension Cable The Transmitter will compensate for the effect of lead wire resistance for 3 and 4 wire RTD s and for an Ohm potentiometer sensor when a 3 wire input connection is used Input connections may be made with copper wire 1 Cable Recommendation for RTD Multi conductor high temperature cable overall braid shield with three copper TFE insulated conductors and TFE wrapped jacket Wire size should be 24 to 16 AWG 2 Cable Recommendation for Ohm Multi conductor standard temperature instrumentation grade cable overall braid shield PVC insulated three copper conductors with PVC jacket Wire size should be 24 to 16 AWG Millivolt Sensor to Transmitter Extension Cable Cable Recommendation Multi conductor standard temperature instrumentation grade cable overall braid shield PVC insulated twisted pair copper conductors with PVC jacket Wire size should be 24 to 16 AWG 4 3 10 2 Wire RTD Accuracy Limitation The use of a 2 wire RTD requires
117. f the battery charge is spent Fresh batteries should then be available for installation VI Gaptive Screw NOTE If the MXC fails due to low batteries data in the On Line Memory section of the MXC will be lost The MXC should not be used to troubleshoot critical loops while the low battery indicator is showing The MXC will automatically conserve battery life when in the configuration mode After approximately ten minutes with no keys on the keypad being pressed the MXC will shut itself off This will not occur while the MXC is monitoring variables from a field instrument 2 5 MXC SOFTWARE VERSION To read an MXC s software version perform the following steps 1 Press and hold the MXC s ON key until the MOORE logo appears on the display 2 Watch the MXC display The MXC s software version will be momentarily displayed 3 Press the OFF key or continue on to configure or monitor a transmitter 2 6 MXC MENU SCREENS AND PARAMETER MAP Major MXC menu screens are shown in Figure 2 2 The screen s name appears in the left column These screens are shown in block form in Figure 2 3 Figure 2 3 is a Parameter Map which shows general configuration and calibration flow Detailed configuration procedures are given in Section 5 of this Manual Calibration is described in Section 6 September 1995 2 7 XTC COMMUNICATOR Main Menu On Line Menu On Line Configuration Menu Calibrate Test Menu Function Block Menu Configuration C
118. ft center or right arrow and then press the desired alphanumeric or symbol key 2 2 2 Function Keys F1 F2 F3 and F4 The function keys the gray keys located just below the MXC display The function or action performed by each key is shown on the bottom two lines of the display immediately above each key For example when the MXC is first turned on and the Main Menu screen appears the following selections are aligned with the function keys F1 FIND XMTR F2 ARCH FUNC F3 TEST MXC and F4 END To SERE CT TANG TION make a selection press the corresponding Function key and the next FIND ARCH TEST screen will appear These keys are used extensively when XMTR FUNC MXC END configuring or monitoring a field instrument September 1995 2 5 XTC COMMUNICATOR UM344 2 2 3 LOOP CONNECTION The MXC is quickly connected into a transmitter loop A 40 1m cable with a dual banana plug on one end and two mini grabber clips on the other is provided The dual banana plug is inserted into the bottom of the MXC The mini grabber clips are connected to the Model 344 s signal terminals or to the loop s current sense resistor usually at a receiving instrument such as a Model 352 Single Loop Digital Controller see notes below This is a non polar connection The MXC can now communicate with the transmitter from the control room or a field location The diagram below shows a basic loop with the MXC connected at various locations NOTE
119. g Meter 90 CW or CCW X0287081 Notes 1 2 and 3 FIGURE 4 10 Digital Meter Repositioning and Removal C Installation 1 Turn off power to transmitter and remove the longer enclosure cap 2 Snap wrist strap on wrist and connect ground clip to an unpainted area on the Transmitter or mounting bracket September 1995 4 27 INSTALLATION UM344 2 3 Determine desired meter orientation and perform either procedure A or B Note the following when installing and positioning the short ribbon cable and when applying power to the transmitter NOTE Pin 1 end of cable connector is identified by dark Red or Blue striped cable conductor Pin 1 of Board 7 connector is identified by the 1 printed next to one corner of the connector At power up an automatic display test is performed which turns on all LCD segments for approximately 5 seconds At the conclusion of the test if the Transmitter is active a numerical value will be displayed with an annunciator If the Transmitter is configured as a Controller additional annunciators may be displayed 4 4 5 Electrical Conduit and Cable Installation Electrical conduit and network sensor and power wire are supplied by the user Access to electrical terminals is described in Section 4 4 5 3 For conduit and cable routing refer to the user s installation drawings Installation of conduit and cabling should follow the guidelines given below 4 4 5 1 Conduit e Transmitter conduit inl
120. g signaling and other out of band interference preventing a compromise of the digital reception The filtered signal is applied to a Zero Crossing Detector which converts the filtered information into clean pulses of uniform amplitude before introduction to the Bell 202 Modem The Modem receives and processes e g demodulation the serial FSK signal R44 and outputs the signal to the Microcontroller where serial to parallel conversion is performed In response to the received signal the Microcontroller outputs a signal Txa to the Modem where it is modulated and fed into the feedback circuit of the Converter for transmission Txa over the loop September 1995 7 5 UM344 2 MODEL DESIGNATION AND SPECIFICATIONS 8 0 MODEL DESIGNATION AND SPECIFICATIONS This section contains the model designation table accessory tables and specifications for all Model 344 Temperature Transmitters 8 1 MODEL DESIGNATION Table 8 1 identifies each model designation entry on a transmitter s nameplate The nameplate also carries other important transmitter information in addition to the model designation bill of material number B M serial number span limits factory calibration FCTY CAL and certifications IMPORTANT Confirm transmitter model by referring to the transmitter s model designation on its nameplate and Table 8 1 before installing applying or removing power configuring or servicing TABLE 8 1 Model 344 Model Designation
121. gital mode for a Point To Point or a Multi Drop network respectively ANALOG MODE A single transmitter is connected to a controller recorder or other field device A loop known as a Point To Point Network interconnects the instruments The transmitter s output is the process variable and it is sent to a controller or recorder using a standard 4 20 mA analog current September 1995 1 3 INTRODUCTION UM344 2 The HART protocol is used for communication between the transmitter and a Moore XTC Communicator MXC a personal computer running MXTC Configuration Software or other remote device A typical communication can be to transfer a new and edited configuration remotely monitor the process variable or service a transmitter DIGITAL MODE One to fifteen transmitters can be parallel connected to a Multi Drop Network using only twisted pair cable The HART protocol is employed to send all process variable information to a HART compatible controller recorder or other device A mounting bracket is included and permits either pipe mounting 2 pipe or wall mounting When attached to a thermowell the Transmitter can be mounted directly to a process vessel chamber or flow pipe 1 3 CONFIGURATION A smart transmitter must be configured before being used on line or off line Each transmitter is shipped with either a default configuration or if specified at time of order a custom configuration defined by the user A default configuration
122. h of the mounting bolts 3 Place the pipe groove side of the bracket against the mounting surface site and align the bracket and surface mounting holes Install the bracket with user supplied 5 16 inch bolts washers and hex nuts 2 Transmitter To Bracket Mounting 1 Mount transmitter to bracket as described in Section 4 4 1 step 1 2 Reposition the Transmitter s local display if any to provide the best possible view of the display Refer to Section 4 4 4 September 1995 4 21 INSTALLATION UM344 2 4 4 3 Direct Mounting to Process The Transmitter can be mounted directly to the point of measurement and supported by the thermowell extension fittings and probe assembly IMPORTANT It is recommended that high temperature anti seize compound be applied to the threads of thermowells extension nipples union connectors and sensor assemblies Refer to Figures 4 7 and 4 8 and the following for mounting guidance 4 22 Unscrew the thermowell from the Sensor Assembly Refer to the thermowell manufacturer s installation literature and install the thermowell at the measurement point Screw onto the thermowell the extension nipple and union if any If required install insulation around the surface area of the measurement point to limit the effects of heat radiating from the chamber vessel or pipe containing the process material Insert the probe assembly through the extension nipple if present and seat into the thermowell
123. he error messages in Table 6 1 is displayed multiple errors can be displayed TABLE 6 1 Self Diagnostics Troubleshooting MXC PROBABLE CAUSE CORRECTIVE ACTION MESSAGE E2 ROM ROM CHECKSUM match failed Replace Electronics Module E3 RAM Microprocessor failed RAM inoperative Replace Electronics Module E4 EPROM Microprocessor cannot retain Reconfigure recalibrate transmitter Perform configuration or calibration data transmitter TEST step 4 If TEST fails replace Electronics Module E5 TIMER A major cycle interrupted itself Replace Electronics Module TRANSMITTER FAILED TRANSMITTER SELFTEST CONT E6 SENSOR Three successive AID sensor Replace Electronics Module conversions were bad 4 Confirm that the fault still exists by selecting the CALIBRATE TEST screen from the On Line Menu of the MXC and press TEST F3 This instructs the transmitter to perform a self diagnostic test TRANSMITTER FAILED TRANSMITTER SELFTEST PT101 FAILSAFE ER RORS CONT Fault Remains If the fault remains the adjacent message will be displayed 6 18 September 1995 UM344 2 CALIBRATION AND MAINTENANCE Repeat the TEST program to ensure the validity of the reported fault Press END F4 to exit the CALIBRATE TEST program Go to step 5 Fault Does Not Reappear If the fault was temporary possibly caused by excessive electrical noise or a power line spike the adjacent message will be displayed If the transmitte
124. he suitability of this equipment for hazardous locations For Division 2 hazardous locations When the equipment described in this Instruction in installed without safety barriers the following precautions should be observed Switch off electrical power at its source in non hazardous location before connecting or disconnecting power signal or other wiring Pr cautions Francais Emplacements dangereux de classe I division 1 et classe I division 2 Les pi ces de rechange doivent tre autoris es par l usine Les substitutions peuvent rendre cet appareil impropre l utilisation dans les emplacements dangereux Emplacement dangereux de division 2 Lorsque l appareil d crit dans la notice crjointe est install sans barri res de s curit on doit couper l alimentation lectrique a la source hors de l emplacement dangereux avant d effectuer les op rations suivantes branchment ou d branchement d un circuit de puissance de signalisation ou autre 8 14 September 1995 UM344 2 MODEL DESIGNATION AND SPECIFICATIONS September 1995 8 15 UM344 2 GLOSSARY 9 0 GLOSSARY Listed here are terms used in the field of temperature measurement terms and abbreviations that appear on a Moore XTC Communicator MXC screen and terms relevant to HART networks ALPHA The average percent change in resistance per degree of a pure metal resistance device between 0 and 100 degrees Centigrade Designated by the Greek letter alpha ANALO
125. his Ground Connection to building ground to ensure a dependable ground The power supply and connections must be floated and the shields at Network Junctions must be connected as discussed above September 1995 4 15 INSTALLATION UM344 2 b cable shield s may be grounded at a Network Junction Box or Wiring Panel provided that the cable shields are connected to either a terminal or the Box or Panel frame and the terminal or frame is grounded The power supply and connections must be floated and the cable shield at the transmitter must not be connected e MulttDrop Network If the Primary Master s power supply output is isolated from ground the Network may be floated The cable shield should be connected only to one point the Primary Master s negative supply output e Sensor Cable a Shielded sensor cable should be used remote mounted sensor to minimize the effects of electric noise The sensor wires should be twisted to minimize magnetic induced noise b Ona remote mounted thermocouple if the thermocouple measuring junction is grounded to its sheath which is also grounded connect the sensor cable shield to ground as close as practical to the measuring junction c Onaremote mounted thermocouple if a thermocouple measuring junction is ungrounded ground the cable shield and the negative thermocouple wire to a common point as close as practical to the measuring junction d Do not connect the cable shield
126. ide blocks are free of the metal guide posts Place removed Module in static protective bag REPLACEMENT 1 Remove replacement Electronics Assembly from static protective bag Refer to Figure 4 9 and check that Push Button Enable Disable jumper W1 is in the Enable position 2 Ifa Digital Meter is to be installed refer to section 4 4 4 and connect the removed digital meter board cable to the Electronic Module s P2 connector 3 Carefully insert the Electronic Module into the housing September 1995 6 27 CALIBRATION AND MAINTENANCE UM344 2 e The Electronics Module s guide blocks engage the guide posts e The PI power connector at rear of Module engages the mating connector on the Baseboard 4 Secure the Electronic Modules s retaining bracket to the stand off 5 If applicable refer to section 4 4 4 and install removed digital meter 6 Restore power to the transmitter and perform the following e Transmitter Configuration Refer to Section 5 On Line and Off Line Configuration e System Checkout Refer to Section 3 0 6 6 MAINTENANCE RECORDS An accurate record keeping system for tracking maintenance operations should be established and kept up to date Data extracted from the record may serve as a base for ordering maintenance supplies including spare parts The record may also be useful as a troubleshooting tool In addition maintenance records may be required to provide documentary information in association with a service c
127. igure 4 13 and perform continuity checks return wire to transmitter terminal 3 is open on RTD and RTD return wire to transmitter terminal 3 to isolate the fault Temperature is greater than Upper Range Limit Re range transmitter Refer to Section 5 URL 6 24 September 1995 UM344 2 CALIBRATION AND MAINTENANCE TABLE 6 9 Symptom Erratic Output POSSIBLE CAUSE CORRECTIVE ACTION Loop Wiring Check for 12 Vdc minimum across SIGNAL terminals in transmitter terminal compartment Check power supply output voltage 17 Vdc minimum 42 Vdc maximum Check for loose loop wiring at power supply terminals Supply Barriers if used junction boxes and transmitter terminal compartment Check for loose leads at Current Sense Resistor Check for accumulation of moisture in transmitter terminal compartment Check for multiple grounds on loop cable shield Check for the proper type of loop cable and for electrical interference between the loop cable and any adjacent cables in a cable tray or conduit Check signal loop is grounded not floating Ground signal loop at one point only preferably at the power supply negative terminals Loop power supply excessively Confirm defective power supply by substituting spare supply for suspect noisy supply Select a higher damping value software filter time constant High level noise pick up in sensor Low level leads between sensor and transmitter should be shielded leads Transmitter El
128. ilter s time constant An installed Digital Meter is recommended for this procedure so that the damping values may be monitored 1 Activate the Pushbutton Damping Mode Simultaneously press and hold for 5 seconds or more the FULLSCALE and ZERO pushbuttons then release both pushbuttons Note the following e The Damping Mode is automatically de activated when a minute mode active period times out If a change is not made the present value is retained e When both pushbuttons are pressed a PB annunciator will appear on the Digital Meter If the pushbuttons have been held on for the required minimum 5 seconds when they are released the PB annunciator will remain on and the Digital Meter will alternately display the letters SEC for seconds and the present damping value in seconds 2 Select anew damping value The damping value choices 0 0 5 1 2 5 10 20 30 60 90 120 seconds Repeatedly press the ZERO pushbutton to step down or the FULLSCALE pushbutton to step up through the list Select a time constant from the list that is closest to the desired value 3 Simultaneously press then release both pushbuttons The new value is stored in memory and normal operation is restored 4 Restore protective cover over pushbuttons 5 To set damping without a digital meter activate the pushbutton mode as described in step 1 above 6 Repeatedly press the ZERO pushbutton at least ten times
129. ion of Network Resistance and total current draw of all the transmitters in the Network and is calculated by the following formula Maximum Supply Output Voltage 42 volts 0 004 x number of transmitters on Network x Network Resistance September 1995 4 9 INSTALLATION UM344 2 Power supply output voltage must be less than the calculated value The maximum voltage across the input terminals of a Transmitter should never exceed 42 volts The maximum number of Transmitters that can be connected to a Multi Drop Network is fifteen Each Transmitter is parked in low current draw mode 4 mA to conserve power Ensure that the network power supply is capable of sourcing the total current consumed by the number of transmitters on the Network 4 3 5 Cable Capacitance and Maximum Length A cable length calculation is necessary when HART communication is to be employed Cable capacitance directly affects maximum Network length 4 3 5 1 Cable Capacitance Cable type conductor size and recommended cable model numbers are stated in Section 8 3 3 Two Wire Cable Cable capacitance is a parameter used in the calculation of the maximum length of cable that can be used to construct the Network The lower the cable capacitance the longer the Network can be Manufacturers typically list two capacitance values for an instrumentation cable 1 Capacitance between the two conductors 2 Capacitance between one conductor and the other conductor s
130. ipe Mounting Horizontal 4 82 122 4 Vertical INSTALLATION 0282250 4 19 INSTALLATION 4 20 FIGURE 4 6 Model 344 Mounting Configurations with Supplied Bracket UM344 2 September 1995 UM344 2 INSTALLATION 2 Bracket to Pipe Mounting 1 At the selected location on the pipe place the pipe groove side of the mounting bracket against the pipe See Figure 4 6 2 Slip the supplied U bolt around the pipe and through one of the two pairs of mounting holes in the pipe groove face plate of the bracket 3 Place a supplied washer and hex nut on each end of the U bolt and hand tighten the nuts Rotate the bracket around the pipe to place the Transmitter in the desired position then secure the bracket to the pipe 3 Reposition the Transmitter s local display if any to provide the best possible view of the display Refer to Section 4 4 4 4 4 2 Flat Surface Mounting A Transmitter can be mounted to a flat surface using the supplied mounting bracket and user supplied 5 16 inch bolts Refer to Figures 4 5 and 4 6 and the following for mounting guidance 1 Bracket To Flat Surface Mounting 1 Refer to Figure 4 5 for the bracket mounting hole dimensions 2 Layout the mounting hole pattern on the selected area of the surface Drill 0 344 inch diameter mounting holes to accept 5 16 inch bolts The thickness of the mounting surface and bracket height above the surface are factors in determining the required lengt
131. ir or replacement requires the equipment to be returned to one of the following addresses Equipment manufactured or sold by MOORE PRODUCTS CO MOORE PRODUCTS CO Sumneytown Pike Spring House PA 19477 Equipment manufactured or sold by MOORE PRODUCTS CO CANADA INC MOORE PRODUCTS CO CANADA INC 2 km West of Mississauga Rd Hwy 7 Brampton Ontario Canada Equipment manufactured or sold by MOORE PRODUCTS CO UK LTD MOORE PRODUCTS CO UK LTD Copse Road Lufton Yeovil Somerset BA22 8RN ENGLAND The warranty will be null and void if repair is attempted without authorization by MOORE PRODUCTS CO October 1996 W 1 WARRANTY UM344 2 October 1996 PARTS LIST XTC MODEL 344 TEMPERATURE TRANSMITTER CONTROLLER SZ MOORE Drawing No 15965 639PL MODELS PART NUMBERS 344BNNNIG 15965 1114 344BN5NIG 15965 1115 3 EncosweAssembly 0 1 15965761 159653009 EExdMQ o 0 07 z 800 0 500 0000 21 52 4 15965638 Mounting Bracket Kit not shown Kit Contents 1 1 27 U420xI2HexBot izo Med Lockwasher 4 42 Yl6Medlokwahe 2 2 45 S16UBot 14 1196 1404 Mounting Bracket 8 160851 7 Electronics Assembly 4circuitsboards fJ 1 fio EndosweCap 14 1196 40 NoDigital Meter Installed 0 2 1596769 For Use With DigitalMeter 0 2 22 15965 632 7 DigialM
132. is enabled press ALARM F1 to check the ALARM OUT OF SERVICE status September 1995 3 7 INITIAL TRANSMITTER SET UP 3 3 3 Loop Testing LOOP OVERRIDE SETS TRANSMITTER OUTPUT TO ENTER ED VALUE END CONT WARNING SELF TEST MAY BUMP TRANSMITTER OUTPUT A BORT CONT LOOP OVERRIDE CHOOSE CURRENT OUTPUT LEVEL 4MA 20MA OTHR END 3 4 REVIEW CONFIGURATION DATA Dev ID 210300003C Tag TTC 101 ADD 00 LOOP CAL CON END OVRD TEST FIG 3 8 UM344 2 Testing the loop involves making sure that the Transmitter is sending out the proper current signal and that the other elements in the loop are receiving this signal The Loop Override mode is used to test the loop 1 At the On Line Menu press LOOP OVRD The adjacent screen will be displayed Press CONT and then PROCEED Choose either 4 mA or 20 mA from the menu or choose OTHR to enter another value After a value is entered the Transmitter will output the value chosen Read the analog current value on a Recorder or control station in the loop e Milliammeter connected in series in the loop e Milliammeter connected to the TEST terminals Figures 3 1 and 3 2 e Analog Voltage may be read on a voltmeter connected across the sense resistor NOTE This is intended as a functional test To check calibration accuracy a DMM of at least 0596 accuracy must be used If the transmitter is not working properly try to recalibrate it see S
133. istance if any and any other resistance in the Network NPT National Pipe Thread OPTN OPTION MXC screen abbreviation OTHR OTHER MXC screen abbreviation OVRD OVERRIDE MXC screen abbreviation POINT TO POINT NETWORK A Network having a single field instrument and Primary Master Analog signaling or analog plus digital signaling is possible PREV PREVIOUS MXC screen abbreviation PRIMARY MASTER The single controlling Network Element that communicates with one or more field instruments RERANGING Changing the transmitter s 4 and 20 mA settings 1 setting LRV and this is a configuration function RTD Resistance temperature detector A temperature transducer based on the principle that the resistivity of a metal shows a marked temperature dependence SECONDARY MASTER An occasional user of the Network such as the XTC Communicator MXC SEL SELECT MXC screen abbreviation SNSR INPT SENSOR INPUT MXC screen abbreviation SPAN Algebraic difference between the upper and lower range values URV and LRV TEMPERATURE TRANSMITTER TWO WIRE A device which is used to transmit temperature data from either a thermocouple or RTD via a two wire current loop The loop provides power to the transmitter which acts as a variable resistor with respect to its input signal THERMOWELL A closed end tube designed to protect temperature sensors from severe environments high pressure and flows Usual
134. l Signal Cable lm Note 2 Note 2 f 1 ote RTDI RTD RTD RTD RTD Note 2 Note 2 No connection No connection RTD RTD RTD A 2 Wire RTD B 3 Wire RTD INSTALLATION No connection 1 RTD No connection C 4 Wire RTD No connection No connection TC Q TC OHMs E 1 OHM 7 OHMI Jumper D Thermocouple E OHMS Input Notes 1 Install jumper wire between terminals 1 and 2 No connection mV F mV Input 0282551 2 Connect the sensor and signal cable shields and insulate from ground Ground shields only at the power source FIGURE 4 13 Model 344 Sensor Wiring September 1995 4 33 INSTALLATION UM344 2 Standard ANSI color coding is used on insulated thermocouple or extension grade wire when the insulation permits Some insulations will use a colored tracer to indicate the lead polarity Refer to Table 4 2 for color code information and bare wire characteristics for identifying non color coded wires When connecting solid thermocouple extension wire wire insulation should butt against the head of the screw The conductor should not be visible TABLE 4 2 Thermocouple And Extension Grade Wire Characteristics ANSI TYPE POSITIVE LEAD NEGATIVE LEAD BARE WIRE T C METAL COLOR METAL COLOR CHARACTERISTICS Constantan i Copper yellow Constantan silver Constantan i Iron magnetic i Constantan non magnetic
135. l mode it can cause communications interference on the Multi Drop Network or an excessive current load To check the analog output of a transmitter normally configured for digital mode perform the steps in the preceding section September 1995 6 5 CALIBRATION AND MAINTENANCE UM344 2 6 1 3 RTD OHM Type Input Calibration The conversion accuracy of the temperature signal from RTD Ohm type inputs as indicated by transmitter output ZERO and FULL SCALE values depends upon both CURRENT SOURCE and NARROW WIDE MILLIV OLT calibration section 6 1 4 2 The calibration check consists of substituting a resistance decade box for an RTD or Ohm slidewire potentiometer type sensor RTD Ohm resistances corresponding to ZERO and FULL SCALE values are applied to the transmitter and the 4 mA and 20 mA outputs are checked for accuracy The CURRENT SOURCE calibration procedure consists of precisely measuring and storing in the transmitter the value of the RTD Ohm sensor forcing current 6 1 3 1 RTD OHM Calibration Check 1 Connect test equipment to transmitter as shown in Figure 6 1 or 6 2 The decade box is connected in a 3 wire RTD configuration which eliminates the lead wire resistance effect however all three test leads should be approximately the same length 2 Determine zero and full scale resistances for RTD or Ohm type input For an RTD type input consult user supplied RTD resistance temperature table and record the resistance of the Zero
136. lements is Primary and Secondary Masters 1 each Transmitters 1 to 15 The process variable is transmitted digitally The analog output of each transmitter is parked at 4 mA The HART communication source can be a Primary or Secondary Master A Primary Master can be used for data acquisition maintenance or control purposes A Secondary Master the MXC for example may be used for configuration diagnostics and reporting current process variable Use the optional Digital Meter for local indication of transmitter output Place the transmitter in the digital mode by assigning ita SHORT ADDRESS from 1 to 15 when configuring the TRANSMITTER ID BLOCK with the MXC see Section 5 September 1995 UM344 2 INSTALLATION Network for Non Hazardous Locations S I E ee uu Note 3 m 250 See Network Note 2 77 See Note 6 MXC PON Junction EXON E Controller tz f pee 2 44 fia Recorder or Other of 1 5 Vdc Device I 11 1 iu dl X 2 x RUD ieee Note 0 A orea zd lid lel A P y A System Power Qdi3 Sigo fest Supply E x Owe A DR NEN EOT Ty See Note 5 W Y JN 288880 p See Note 4 a eee O28 Be rd N Model 344 Pi ft M Terminals r ERE See Note 3
137. ler exits the Pushbutton Mode and returns to normal operation D Change VALVE ON LINE AND OFF LINE OPERATION UM344 2 1 The Controller must be in the MANUAL control mode to change the VALVE if it is not place the Controller in the MANUAL control mode 5 22 September 1995 UM344 2 August 1995 ON LINE AND OFF LINE OPERATION 2 Press and hold for a minimum of 5 seconds the FULLSCALE pushbutton then release the button Note the following V 96 and PB annunciators shall be lit and the PV annunciator shall be extinguished e The displayed number is the VALVE position in percent 1 to 110 e Interpreting a VALVE Open Close position depends upon knowing if the FINAL CONTROL ELEMENT is configured as REVERSE or DIRECT acting For DIRECT acting 0 indicates a fully closed valve and 100 indicates a fully opened valve The opposite is true fora REVERSE acting controller Select new VALVE between 1 0 and 110 Note the following e Cycling pressing and releasing in less than 1 second the ZERO or FULLSCALE pushbutton respectively decrements or increments the VALVE in 0 01 increments e Pressing and holding either pushbutton for more than 1 second initiates a special acceleration mode whereby the VALVE changes in greater and greater increments until limiting occurs e The new value is changed in RAM only and not yet stored permanently in memory If the Pushbutton Mode times out bef
138. livolts equivalent to the Zero and Full Scale points 3 Set millivolt source to voltage corresponding to Zero Scale value Adjust source to three decimal places as read from the digital voltmeter DVM connected across millivolt source 4 Apply power 5 Read indicated Zero Scale value Perform either A or B and compare the reading to the specifications in step A If an optional Digital Meter is installed read the indicated Zero Scale value B If a Digital Meter is not installed perform the following 1 From the MXC execute the FIND XMTR program 2 When the MXC finds the transmitter press the dedicated TRANS VAR S key on the MXC and read the displayed value C Accuracy specifications TC aput Equal to or less than 0 2 F type T 0 3 F type E J 0 4 F type K R S B N Equal to or less than 0 02 of span The higher value will be the accuracy tolerance mV input narrow range Equal to or less than 15 microvolts mV input wide range Equal to or less than 30 microvolts Equal to or less than 0 02 of span The higher value will be the accuracy tolerance 6 Set millivolt source to voltage corresponding to Full Scale value and check accuracy of indication against specifications listed in step 5 If calibration is required retain test set up and go to Section 6 1 4 2 September 1995 6 11 CALIBRATION AND MAINTENANCE UM344 2 If accuracy is within specifications
139. lt configuration a Caution screen will be displayed Press Enter to overwrite the stored configuration NEW ARCH save the configuration to a new archive location END return to the previous screen without saving REVIEW return to the Function Block Menu The configuration can be reentered and edited from this Menu by pressing CONT DOWNLOAD downloads the configuration to the transmitter Go to the next section After all configuration information has been edited at the MXC download the configuration to the transmitter A download can be performed in configuration mode at any time by pressing a series of END and SEL END keys until DOWNLOAD key is visible on the screen 1 Press DOWNLOAD to send the configuration to the transmitter If no changes have been made to a configuration and DOWNLOAD is pressed the MXC will display the adjacent screen and will not perform a download to prevent unnecessary communication September 1995 UM344 2 ON LINE AND OFF LINE OPERATION If the configuration has been edited the MXC will display the adjacent warning that the transmitter s configuration will be changed August 1995 5 13 ON LINE AND OFF LINE OPERATION DOWNLOADING CONFIGURATION PLEASE WAIT DOWNLOAD COMPLETE 5 1 3 Local Transmitter Operation UM344 2 2 From the above Warning screen press one of the following two keys DOWNLOAD start a download The MXC will show the Download
140. ly made of corrosion resistant metal or ceramic material TRANSDUCER A device that accepts an input such as pressure and converts that input into an output of some other form such as a voltage TRANSMITTER SHORT ADDRESS A unique number assigned during configuration that identifies a transmitter connected to a network An address between 1 and 15 is assigned to a transmitter connected to a Multi Drop network A transmitter connected to a point to point network has 0 as an address September 1995 9 3 GLOSSARY UM344 2 UPPER RANGE LIMIT URL Determined by the transmitter s range this is the highest value of the measured variable that the transmitter can be configured to measure UPPER RANGE VALUE Representing the 20 mA point in the transmitter s output this is the highest value of the measured variable that the transmitter is currently configured to measure XMIT X MITTR X MTR TRANSMITTER MXC screen abbreviations 9 4 September 1995 UM344 2 GLOSSARY September 1995 9 5 UM344 2 APPENDIX A FUNCTION BLOCK DESCRIPTIONS A 0 APPENDIX A FUNCTION BLOCK DESCRIPTIONS A 1 SENSOR INPUT BLOCK Input Type MV Wide Narrow OHM Wide Narrow RTD PT 100 OHM DIN PT 100 OHM US PT 200 OHM DIN PT 200 OHM US PT 500 OHM DIN PT 500 OHM US T C J K E T R S B N Measured Variable and RTD Measured Variable Units Celcius 1290 Range Fahrenheit Digital Filter Time
141. mbly and the slide cable from cable slot 4 Loosen do not remove upper right and lower left assembly retaining screws 5 Gently rotate assembly counterclockwise to position upper right retaining screw in large hole in keyhole and carefully lift assembly clear of screw then slide it clear of lower left retaining screw 6 Rotate the assembly 180 place under the retaining screws rotate assembly clockwise and tighten screws 7 Position ribbon cable in closest cable slot and connect cable to connector J3 8 Disconnect wrist strap s ground clip 9 Replace enclosure cap and restore power to transmitter B Rotate Meter 90 CW or CCW 1 Remove Digital Meter assembly as described in paragraph A steps 1 to 5 above 2 Remove the upper right 3 25 inch hex stand off Install the stand off in the upper left mounting hole September 1995 4 25 INSTALLATION UM344 2 3 At the Electronics Module remove the meter mounting bracket attached to the left corner of bottom circuit board Install bracket in right front corner of that circuit board 0 and 180 Digital Meter 90 and 270 Digital Meter Mounting Harware Locations Mounting Hardware Location hh E Meter Orientation ER Note 3 Hex Stand Off and Digital Meter Assembly Mounting Screw Electronics Module Guide Blocks Electronics Module Notes 1 and 5 W1 Note 4 Connector P2 for Ribbon Cable Bracket and to Digi Digital Meter Assembl
142. ment of assemblies is easily accomplished with standard hand tools Section 4 4 4 describes repositioning and removal of the digital meter This procedure is also used for meter replacement NOTE If the transmitter Controller version is controlling a process use the proper procedures and shut down the process 6 5 1 Electronics Module Removal and Replacement The Electronics Module should be returned to the factory for repair if found to be defective REMOVAL 1 The electronics module can usually be replaced at the installation site otherwise remove the transmitter for bench servicing If a Transmitter Controller is controlling the process use the proper procedures and shut down the process Turn off power to transmitter and remove the enclosure cap to access the electronics module 2 Retrieve the wrist strap from the maintenance kit and snap it on Connect ground clip to unpainted area on the transmitter or mounting bracket Use proper handling procedures to prevent damage to the Electronics Module from electrostatic discharge Store an electronic assembly in a static shielding bag 3 Ifa Digital Meter is installed remove the meter assembly as described in Section 4 4 4 Disconnect digital meter board cable from Module connector P2 Retain removed cable Place digital meter assembly in static protective bag 4 As shown in Figure 4 9 unscrew captive screw from Module s retaining bracket Slide Module forward until Module s gu
143. ng The following procedures can assist maintenance personnel in identifying and isolating a transmitter or loop problem and its source Diagnostic messages and symptoms related to transmitter malfunction help in diagnosing a problem Begin troubleshooting by noting the diagnostic message or symptom that accompanies a transmitter malfunction 6 3 2 1 Diagnostic Messages Transmitter diagnostic messages consist of displays initiated by transmitter self diagnostics paragraph A or communication warnings paragraph B shown on an MXC A Transmitter Self Diagnostics Microprocessor initiated transmitter self diagnostics perform tests on the Electronics Assembly but not the temperature measuring sensor NOTE Faults such as a failed digital meter or erratic sensor are not detectable by the self diagnostics A transmitter failing its self diagnostics can result in one of the following displays Perform the procedure given below to access the diagnostic displays and remedy the problem September 1995 6 17 CALIBRATION AND MAINTENANCE UM344 2 FAIL Transmitter LCD MXC 1 If not already in communication with the suspect transmitter establish communications by executing the FIND XMTR routine on the MXC as described in Section 3 2 2 Press the MXC s STATUS key If the message FAILSAFE appears in the display the transmitter has failed a self diagnostic test 3 Press ERRORS F2 to display all active transmitter errors Note which of t
144. nsmitter nameplate can be stamped with a tagname of up to 8 characters Optional wired on SS tags are also available 4 Refer to SD344 for details 8 2 ACCESSORIES Table 8 2 lists the general accessories available for the transmitter Accessories are ordered separately since they are not included in a transmitter s model number Table 8 3 lists the thermal sensors commonly available for the transmitter Each sensor can be provided as an integral or remote assembly The integral version shown in Figure 8 1 provides a direct connection that becomes part of the transmitter assembly The remote version shown in Figure 8 2 includes a connection head that provides a termination point for the sensor wires allowing the sensor to be installed separately TABLE 8 2 General Accessories DESCRIPTION PART NUMBER General Purpose Power Supply 24 Vdc 2A 15124 1 Field Mounted Power Supply 28 Vdc 125 mA NEMA 4x EP TABLE 8 3 Thermal Sensors DESCRIPTION BASIC REFERENCE NUMBER Threaded Bar Stock Well Assembly 344T1 Flanged Bar Stock Assembly 344T2 Sanitary Probe Refer to PI34 3 XTC Transmitter Accessory Guide for additional details 8 2 September 1995 UM344 2 MODEL DESIGNATION AND SPECIFICATIONS Refer to corresponding GC344T_ or PI34 3 for ordering information September 1995 8 3 MODEL DESIGNATION AND SPECIFICATIONS UM344 2 9 00 6 00 2 00 22 9 BEEN 15 2 o T 10 d Thermocouple Thermow
145. ntly on the outside of the return shipment e When calling for an RMA number provide the reason for the return If returning equipment for repair failure information e g error code failure symptom installation environment will be requested A purchase order number will be requested MATERIAL SAFETY DATA SHEET A Material Safety Data Sheet MSDS must be included with each item being returned that was stored or used anywhere hazardous materials were present e Decontaminate a transmitter before packaging it for shipment PACKAGING e Package assembly in original shipping materials Otherwise package it for safe shipment or contact the factory for shipping recommendations 6 30 September 1995 UM344 2 CALIBRATION AND MAINTENANCE September 1995 6 31 UM344 2 CIRCUIT DESCRIPTION 7 0 CIRCUIT DESCRIPTION This section provides a basic circuit description of the XTC Model 344 Temperature Transmitter Controller Figure 7 1 shows a functional block diagram of the transmitter The main Electronics Assembly is comprised a four circuit boards Digital Board with microprocessor and HART modem chips Analog Board with the Digital Analog converter and power supply an Input Board and an Output Board The baseboard contains filtering components for the transmitter I O and an optional digital LCD display board provides local indication of the transmitter output 7 1 ELECTRONICS ASSEMBLY The main Electronics Module has four boards which
146. olerance An MXC is needed for calibration It provides four calibration programs DAC OUTPUT Calibrates the Digita to Analog Converter that sets the transmitter s analog output signal e WIDE mV Calibrates the millivoltmeter for TC mV inputs between 18 00 mV and 103 mV NARROW mv Calibrates the millivoltmeter for TC mV inputs between 11 00 mV and 26 00 mV CURRENT SOURCE Calibrates the transmitter s current source that supplies a forcing current to RTD Ohm sensors September 1995 6 1 CALIBRATION AND MAINTENANCE UM344 2 6 1 1 Equipment Required Moore XTC Communicator MXC refer to Section 2 of this User s Manual e Laboratory grade digital multimeter DMM for calibrating the 4 to 20 mA output signal Voltmeter Section Accuracy 0 01 of reading Resolution 1 0 mV Input impedance 10 MQ Ammeter Section Accuracy 0 1 of reading Resolution 1 A Shunt resistance 10Q or less e 24 Vdc power supply for bench calibration e Resistor 2500 1 carbon 1 4 watt for bench calibration e Laboratory grade precision microammeter with a resolution of 0 001 uA used to calibrate Current Source Precision adjustable millivolt source range to 110 mV Used to check and calibrate mV thermocouple inputs e Digital voltmeter to monitor the millivolt source with a resolution of 0 001 mV for ranges up to 110 mV e Precision resistance decade box 5 dial type with largest dial providing 100
147. omplete Menu Loop Override Menu MXC screens X02781S0 2 8 UM344 2 SELECT FUNCTION FIND ARCH TEST XMTR FUNC MXC END Dev ID 210300003C Tag TTC 101 ADD 00 LOOP CON END OVRD TEST FIG CONFIGURATION MODE EDIT EDIT ARCH CONF CALIBRATE TEST CAL TEST END SELECT BLOCK TO EDIT SENSOR INPUT SEL PREV NEXT END ECT CONFIGURATION COMPLETE LOOP OVERRIDE CHOOSE CURRENT OUTPUT LEVEL 4MA 20MA OTHR END FIGURE 2 2 Major MXC Menu Screens September 1995 UM344 2 XTC COMMUNICATOR MXC SELF TEST MENU MAIN MENU ENTER TAG NOTE This Map is intended to show general configuration and calibration flow Every key and screen is not shown ENTER EXIST ARCH NOT EXIST 0288251 SELEC TYPE TEMPERATURE TRANSMITTER LOOP OVERRIDE MENU ABOR ON LINE MENU LOOP PRO OVRD CEED END ABOR CALIBRATE TEST MENU PRO TRIM CAL CEED DAC CONT PRO TEST CEED CONT ZERO CONT CAL SELF TEST TEST ABOR ABOR ABOR END ABOR ON LINE CONFIG URATION MENU EDIT ENTER ARCH ARCH CONT CONF ABOR QUIT CONT EDIT n CONF Q CONT FUNCTION BLOCK MENU CONFIGURATION COMPLETE MENU END SENSOR INPUT END OUTPUT REVIEW OPERATOR DISPLAY renee DOWI DOW TRANSMITTER ID LOAD LOAD END ALARM QUIT ABOR SP TRACK amp HOLD A M TRANSFER m CONTROLLER FIGURE 2 3 Parameter Map MXC Model 344 September 1995 2 9 XTC COMMUNICATOR
148. ontact TIC for support either call 215 646 7400 extension 4TIC 4842 or leave a message in the bulletinboard service BBS by calling 215 283 4958 The following information should be at hand when contacting TIC for support e Caller ID number or name and company name September 1995 6 29 CALIBRATION AND MAINTENANCE UM344 2 When someone calls for support for the first time a personal caller number is assigned This number is mailed in the form of a caller card Having the number available when calling for support will allow the TIC representative taking the call to use the central customer database to quickly identify the caller s location and past support needs e Product part number or model number and version see section 7 0 for guidelines on identification e If there is a problem with product s operation Is problem intermittent The steps performed before the problem occurred Any error messages displayed Installation environment 6 10 RETURN SHIPMENT The return of equipment or parts for any reason must always be coordinated with the factory When it becomes necessary to make a return shipment be sure to contact Moore Products Co first and obtain packaging information and carrier recommendations TO RETURN EQUIPMENT e Call Moore Products Co at 215 646 7400 ext 4RMA 4762 weekdays between 8 00 a m and 4 45 p m Eastern Time to obtain an RMA Return Material Authorization number Mark the RMA number promine
149. ontract It is suggested that as appropriate the following information be recorded Date of service incident Name or initials of service person Brief description of incident symptoms and repairs performed Replacement part or assembly number Software compatibility code of original part Software code of replacement part Serial number of original part Serial number of replacement part Issue number of original electronics module Issue number of replacement electronics module Date of completion 6 7 RECOMMENDED SPARE AND REPLACEMENT PARTS The quantity and variety of spare parts is determined by the time a transmitter can be permitted to remain out of service or off line An electronics module should be stocked by the user for immediate repairs Replaceable parts are listed in the Parts List at the back of this Manual To replace a part refer to Section 4 Installation and the Parts List drawing at the back of this Manual When ordering a part provide the following information for the item module or assembly to be replaced or spared This information will help insure that a repair addresses the observed problem and that a compatible part is supplied 6 28 September 1995 UM344 2 CALIBRATION AND MAINTENANCE 1 Part number from Parts List or from a label on assembly 2 The single number software compatibility code 3 Serial number from the label on the transmitter s nameplate 4 User pu
150. ore storage is accomplished the Controller will operate with the new VALVE however the new value will be lost after a power down or Master Reset E Store New VALVE to Memory new Power Up Valve in Auto Manual Transfer Block 1 Simultaneously press and release both pushbuttons to store new VALVE After VALVE storage the Controller exits the Pushbutton Mode and returns to normal operation ON LINE AND OFF LINE OPERATION 5 1 4 Quick Access Key Operation Dev ID 210300003C Tag TTC 101 ADD 00 LOOP CAL CON END OVRD TEST FIG 76 534 deg F l 3 8377 mA P 63 272 deg F TREND WHICH VAR MEASURED VARIABLE SEL PREV NEXT END ECT ENTER SAMPLING TIME SECONDS EN END TER WARNING TREND TIME MUST FALL BETWEEN 1 AND 300 SECONDS UM344 2 MXC Quick Access keys are used to view transmitter parameters while the MXC is on line and communicating with a transmitter refer to Section 2 Eight Quick Access keys are used with the Model 344 TRANS VAR S TREND ZOOM and STATUS are available with the controller ON or OFF CHANGE SP CHANGE VALVE A M and TUNE are only available when the controller is ON Press a key to access live transmitter data NOTE Conserve battery power Do not leave the MXC in the on line mode 1 Establish communication with a transmitter see Section 3 2 and go to the On Line Menu adjacent 2 Press a Quick Access key to view the desired transmitter parameter s
151. ower Supply Output Voltage 12 volts 0 0225 x Network Resistance in ohms Power supply output voltage must be greater than the calculated value The minimum voltage across the input terminals of a Transmitter is 12 volts Calculate the maximum power supply output voltage The maximum network power supply voltage is a function of Network Resistance and zero scale current 3 85 mA and is calculated by the following formula Maximum Power Supply Output Voltage 42 volts 0 00385 x Network Resistance in ohms Power supply output voltage must be less than the calculated value The maximum voltage across the input terminals of a Transmitter should never exceed 42 volts 4 3 4 2 Multi Drop Network Perform the following simple calculations to ensure that the power supply output voltage permits the Transmitter to remain within its operating range 1 Calculate the minimum power supply output voltage Minimum network power supply voltage is a function of Network Resistance and the total current draw of all transmitters in the Network and is calculated by the following formula Minimum Supply Output Voltage 12 volts 0 004 x number of transmitters on Network x Network Resistance Power supply output voltage must be greater than the calculated value The minimum voltage across the input terminals of a Transmitter is 12 volts Calculate the maximum power supply output voltage Maximum network power supply voltage is a funct
152. pical mechanical installations Refer to Section 8 3 for mechanical and environmental specifications e Determine if an explosion proof or intrinsically safe installation is required Refer to Transmitter nameplate for electrical classifications and Sections 8 1 8 3 and 4 6 An intrinsically safe installation requires user supplied intrinsic safety barriers that must be installed in accordance with barrier manufacturer s instructions for the specific barriers used Transmitter certification is based on the Entity concept in which the user selects barriers that permit the system to meet the entity parameters 4 2 September 1995 UM344 2 INSTALLATION Determine conduit routing Refer to Section 4 4 5 Prepare installation site drawings showing the following Location of the Master Device e g MXC or controller e Location and identification of each Transmitter e Routing plan of signal cable s e Location of any signal cable junctions for connecting the MXC 4 3 2 Electrical Determine Transmitter operating mode analog or digital and type of Network needed refer to Section 4 3 3 Determine minimum power supply requirements Refer to Section 4 3 4 Select twinaxial cable type and determine maximum cable length Refer to Section 4 3 5 Determine the need for network junctions Refer to Section 4 3 6 Intrinsically Safe installations will need barriers Refer to Section 4 3 7 Consider the effect of connecting additional eq
153. pported by the HART Communication Foundation HART NETWORK A single pair of cabled wires and the attached communicating HART elements LOWER RANGE LIMIT LRL Determined by the transmitter s range this is the lowest value of the measured variable that the transmitter can be configured to measure LOWER RANGE VALUE LRV Representing the 4 mA point in the transmitter s output this is the lowest value of the measured variable that the transmitter is currently configured to measure INTRINSICALLY SAFE INSTRUMENT An instrument which will not produce any spark or thermal effects under normal or abnormal conditions that will ignite a specified gas mixture MAXIMUM OVERRANGE The maximum pressure static plus differential that can safely be applied to a transmitter MULTI DROP NETWORK A HART Network having from one to fifteen field instruments that are parallel connected on a single 2 wire cable This Network uses digital signaling only Analog signaling is not employed NETWORK A Network includes the following items Transmitter s Network Element controller recorder passive non signaling element or other device Cabling interconnecting these devices Barriers for intrinsic safety if installed Current sense resistor NETWORK ELEMENT Any field instrument or Primary or Secondary Master 9 2 September 1995 UM344 2 GLOSSARY NETWORK RESISTANCE Defined as the sum of the Current Sense Resistance Barrier Res
154. press one of the four following keys F1 F2 F3 or END ANALOG F1 Press to search for an analog mode transmitter Analog mode is used when there is one transmitter in the loop and it has an address of zero If all Point to Point Network connections are correct when the MXC finds a transmitter with an address of 0 the MXC will display the ID and TAG Go to Step 6 If a problem exists in the Transmitter or Network Wiring the MXC will show NO TRANSMITTER FOUND Go to Section 6 3 Troubleshooting to confirm and resolve wiring problems DIGITAL F2 Press to search for a digital multi drop mode transmitter Digital mode allows up to 15 transmitters to be connected to the loop Each transmitter in a loop is assigned a unique address between and 15 Go to Step 5 SRCH TAG F3 Press to search for a specific transmitter Search can be used when the transmitter is in either Analog or Digital mode Type the tagname 8 character alphanumeric string of the transmitter that is to be configured or interrogated and press ENTER F4 To edit the tagname use the arrow keys to select any character that needs to be changed Go to Step 6 If a problem exists in a transmitter or loop wiring the MXC will show NO TRANSMITTER FOUND END Press to return to the previous screen 3 3 INITIAL TRANSMITTER SET UP UM344 2 NOTE Analog and Digital modes are discussed in detail in Section 4 SHORT OR LONG FORM ADD
155. put Impedance 1 0 Resistance Potentiometer Input Impedance 8 3 5 Environmental Ambient Temperature Range Storage amp Operating Operating Storage Humidity Operating Storage Maximum Moisture Operating Nic NC EE UM344 2 120 dB at 50 60 Hz and 1000 ohm unbalanced input 6 dB at 2 Hz and 60 dB at 50 60 Hz 30 Vdc 0 001 to 10Hz breakpoint frequency selectable Automatic Greater than 200 000 Ohms HART selectable UP DOWN Greater than or equal to 0 1 F NIST curve based on IPTS 1968 Greater than 1 Megohm Greater than 1 Megohm Greater than 1 Megohm 40 to 85 C 40 to 185 F 40 to 85 C 40 to 185 F 5 100 RH 0 100 RH non condensing Less than 0 050 Ib H20 per Ib of dry air Less than 0 028 Ib per Ib of dry air Operates in Class G3 Harsh environment per ISA S71 04 Less than 0 05 URL from 0 to 2000 Hz in any axis per SAMA PNC 31 1 up to 7Gs max Tested for RFI from 30 MHz to 1 GHz for a field of 30V m September 1995 UM344 2 MODEL DESIGNATION AND SPECIFICATIONS ESD Susceptibility 2 000 IEC severity level 4 15 kV 8 3 6 Hazardous Area Classification Before installing applying power to or servicing a transmitter see the transmitter s nameplate and the Table in section 8 1 for the electrical classification Contact Moore Products Co for latest approvals and certifications The transmi
156. r passes the selftest it will automatically exit the failsafe mode and resume operation 5 If a fault exists on the MXC press STATUS then E2 ROM E3 RAM ERRORS F2 Compare the displayed errors with those E4 EPROM E5 TIMER noted in step 3 Refer to Table 6 1 for a list of errors and E6 SENSOR corrective action The MXC screen is shown here EXIT Communication Warning Messages The following three communication warning messages can interrupt the MXC screen at any time during a communication if an error is detected A troubleshooting procedure with a possible cause and corrective action recommendation is provided for each error message in Tables 6 2 6 3 and 6 4 WARNING WARNING NO TRANSMITTER FOUND COMMUNICATION ERROR WARNING RE FIELD DEVICE TRY END RETRY QUIT MALFUNCTION TABLE 6 2 Message No Transmitter Found This message is the result of a failed attempt to communicate with a specific transmitter when executing the FIND XMTR program on the MXC TRANSMITTER PASSED TRANSMITTER SELFTEST CONT POSSIBLE CAUSE CORRECTIVE ACTION Wrong Transmitter Address Consult configuration documentation to obtain correct address or Tag Digital transmitter only or Tag Electrical Noise on Signal Wires Press RETRY F3 at least 3 times waiting at least minute between retries If not successful continue troubleshooting Check for multiple loop cable shield grounds September 1995 6 19 CALIBRATIO
157. ration allows for selecting the A M block power up position automatic manual When the function block powers up in manual the value of M can be set in configuration from 1 0 to 110 The Power Up Valve can only be changed by editing the parameter in this function block with the MXC or by storing a new value via the pushbuttons of the XTC A 8 CONTROLLER BLOCK The controller function block provides an extensive range of Proportional Integral Derivative functions including PID PD and ID PID Controller Controller Regaine On Off Controller PID PD ID Beck sate ere etai eases Reverse Direct Proportional Gain PID amp 0 01 to 100 0 sp gt 0 01 to 1000 min repeat 0 01 to 100 0 min PV Derivative 1 1 00 to 30 00 Manual Reset PD 0 0 to 100 0 Manual Reset Tracking PD only No Yes The PID controller is a reset type controller which uses external feedback to establish the integral action The function block will force the output to track the feedback when the controller is in manual If the derivative time TD is set to 0 00 the derivative section is eliminated Equations O GE R F AUTO R TIs 1 TDs 1 O
158. rchase order number of original order available from user records 5 New user purchase order number for the assembly to be replaced or spared 6 Reason for return for repair include system failure symptoms station failure symptoms and error codes displayed Returns should be packaged in original shipping materials if possible Otherwise package item for safe shipment or contact factory for shipping recommendations Refer to Section 6 9 to obtain a Return Material Authorization number IMPORTANT The electronics module must be placed in a static shielding bag to protect it from electrostatic discharge 6 8 SOFTWARE COMPATIBILITY A single number software compatibility code identifies transmitter software revision level This software controls the transmitter s operating routines and its HART communications with loop connected stations and gateways To read the software level of a transmitter see Section 5 for a detailed procedure 1 Connect the MXC to the loop Establish communication with the transmitter and display the On Line Menu 2 Press STATUS then press CONT Read the model number and software revision level 6 9 PRODUCT SUPPORT Product support can be obtained from the Moore Products Co Technical Information Center TIC TIC is a customer service center that provides direct phone support on technical issues related to the functionality application and integration of all products supplied by Moore Products Co To c
159. rent consumption 7 2 2 RTD OHMS Input The range input for an OHM type input is 0 to 1875 ohms from an RTD or potentiometer source Input circuits for a potentiometer or RTD input operate identically here an RTD input will be described The operation of the input circuitry with an RTD OHM input is essentially the same as with a TC mV input with the following exception an RTD OHM input is read by forcing a 52 microamp current through the sensing device and measuring the resulting voltage drop that is applied to the input filter 52 microamps was chosen to generate standard TC voltages when used with a TC input When the transmitter is configured for an RTD input the RTD SEL output from the A D Converter goes logic high turning off the P channel FET and disabling the burnout trickle current network The CMOS September 1995 7 3 CIRCUIT DESCRIPTION Analog Switch is turned on enabling the 52 uA sink circuit 7 4 UM344 2 September 1995 UM344 2 CIRCUIT DESCRIPTION The current from the 104 microamp source is applied to the RTDI pin which is jumpered to the TC pin Since the 52 sink network draws 52 microamps the remaining current flows through the RTD input to ground creating a voltage at the input to the 2 pole filter 52 microamps is drawn through the TC pin into the 52 WA sink network ensuring that when a 3 wire RTD is used both measurement leads will have identical current flowing in the same direction into the
160. riable units 2 Type the process variable s units It can be a combination of up to four alphanumeric characters To edit use the lt or gt keys to move to the character to be changed Z gt E Press SEL CONT to continue Press SEL END to end configuration of this block and return to the Function Block Menu as 3 set the range in the Operator Display Block use the tell SEL EDIT END August 1995 method described in Section 5 1 1 1 Sensor Input Block Edit PV LO and HI in their respective screens by typing the upper and lower range values desired Press SEL CONT to continue Pressing SEL END will end configuration and return to the Function Block Menu 5 5 ON LINE AND OFF LINE OPERATION UM344 2 AUTO RERANGE 4 Set Auto Rerange to enable or disable using the LAST DISABLE OPTN and NEXT OPTN keys LAST NEXT SEL SEL OPTN OPTN END CONT Press SEL CONT to continue Pressing SEL END will end configuration of this block LOCAL DISPLAY CODE 5 Scroll through the Local Display Code using the LAST PROCESS VARIABLE OPTN and NEXT OPTN keys to view the following three LAST NEXT SEL SEL choices MEASURED VARIABLE PERCENT or OPTN OPTN END _ CONT PROCESS VARIABLE Display the desired selection Press either SEL END or SEL CONT to enter the selection and return to the Function Block Menu Go to the next section or the desired function block 5 1 1 3 Transmitter ID Block SELECT BLOCK TO E
161. s maintained and requires use of a tool to effect its removal 8 12 September 1995 MODEL DESIGNATION AND SPECIFICATIONS UM344 2 8 13 UOISIAIG JOIUOD pue juouraunseojA Jeue jeuan aoo PUY Y S N Vd 3uuds IAAP OWA AP JO suorstaoad Surmo o AWUNLULUT Z ZBOOSNA PU ZRO0SNA SUOISSILUST Z 1800SNF PU 1800SNA OWA sjuaumoop IIO 10 spiepuejs YUM SI sare a1 stu YAYM ot oy uonvanzijuoo Aur pue suondo Asojoey Aue lopmusue ppg IPPON npoud oui yey Aypiqrsuodsag ajos ano sapun aum oop 11 61 Wd yiq uwojAouumng 07 Sjonpou PlOSh N3 01 1 AJLIW IOJNOO AO NOLLV IV TO3G September 1995 MODEL DESIGNATION AND SPECIFICATIONS UM344 2 8 3 6 1 CSA Hazardous Locations Precautions This section provides CSA hazardous location precautions that should be observed by the user when installing or servicing the equipment described in this Instruction These statements supplement those given in the preceding section WARNING Failure to observe the following precautions could result in an explosion hazard Precautions English For Class I Division and Class I Division 2 hazardous locations e Use only factory authorized replacement parts Substitution of components can impair t
162. sic function blocks can be accessed Also in the previous sections it was explained how to get back to this screen when making changes to a function block SELECT BLOCK TO EDIT SENSOR INPUT SEL PREV NEXT END ECT August 1995 5 11 ON LINE AND OFF LINE OPERATION CONFIGURATION COMPLETE RE DOWN QUIT SAVE VIEW LOAD Dev ID 210300003C Tag TTC 101 ADD 00 LOOP CAL CON Fig NP SAVE TO ARCHIVE 92 YES ARCH END CAUTION PRESSING ENTER WILL REPLACE ARCH 00 A EN PTC 101 BORT TER TEMP XMTR MODEL 344 TYPE 03 QUIT CONT 5 1 2 Downloading A Configuration NO CONFIGURATION CHANGES MADE DOWNLOAD ABORTED CONT WARNING DOWNLOADING WILL CHANGE XMTR CONFIG A DOWN URATION BORT LOAD UM344 2 1 Choose END at the Function Block Menu in configuration mode to display the Configuration Complete Menu It shows these selections QUIT SAVE REVIEW or DOWNLOAD Choose one after all configuration changes are entered QUIT return to the MXC s On Line Menu adjacent that appeared after initial communication had been established SAVE go to the Save To Archive screen to save the transmitter configuration in an archive The MXC will show the tagname the archive location last used in the MXC and three selections YES NEW ARCH and END YES save the configuration in the archive location shown on the screen If the archive shown contains a configuration other than a defau
163. smitter terminal compartment and at thermocouple head if thermocouple is remote mounted Shorted thermocouple extension wires due to insulation Special Time Domain Reflectometer TDR measurements failure between remote mounted thermocouple and can be used to locate the short otherwise a visual transmitter inspection of the length of wire must be made to locate the short The transmitter will read the temperature at the short junction which if 3 less than the configured Zero range value will force the output current to a maximum low value of 3 84 mA Open RTD lead on double lead side of 3 wire RTD Refer to Figure 4 13 and perform continuity check between RTD wires connected to transmitter terminals 1 and 2 to confirm open circuit The single side RTD lead is shorted to one of the double Refer to Figure 4 13 and perform continuity check side RTD leads RTD shorted out between RTD wires 1 and 3 to confirm shorted RTD Temperature is less than Lower Range Limit LRL Re range transmitter Refer to Section 5 TABLE 6 8 Symptom Output Current Fixed Above Scale at Approximately 21 8 mA POSSIBLE CAUSE CORRECTIVE ACTION Thermocouple Burnout if Upscale protection or Refer to Figure 4 13 and perform burnout check on thermocouple extension wire s open thermocouple and continuity check on wires between transmitter terminals 1 and 3 to isolate the fault RTD element open or if RTD is remote mounted Refer to F
164. store power to the transmitter and check that the spare LCD is functioning correctly To repeat the test use the MXC to TEST the transmitter If the spare LCD functions correctly replace the defective LCD Refer to Section 4 4 4 If the spare LCD exhibits the original problem replace the Electronics Module Refer to Section 6 5 6 3 4 Enclosure Thread Lubrication Enclosure caps should turn smoothly and easily on the enclosure threads These threads are factory coated with a wet paste type anti seize compound such as Never Seez by Emhart Bostik Do not use force to thread a cap onto the enclosure Be careful not to wipe off the lubricant while handling the transmitter Recoat the enclosure threads if the cap is at all difficult to turn on the enclosure threads Always inspect the enclosure O ring for damage before installing a cap 6 4 NON FIELD REPLACEABLE ITEMS Enclosure Cap Display Viewing Glass Agency regulations do not permit field replacement of a broken or damaged glass as this would invalidate the enclosure s explosion proof rating Replace the entire damaged enclosure end cap assembly Power Sensor Input Terminal Strip A damaged unusable terminal strip requires the replacement of the enclosure body Electronics Baseboard 222 September 1995 UM344 2 CALIBRATION AND MAINTENANCE 6 5 ASSEMBLY REMOVAL AND REPLACEMENT This section provides general information concerning the replacing of assemblies Removal and replace
165. t 1995 5 7 ON LINE AND OFF LINE OPERATION 4 5 8 Press EDIT F1 to edit the setpoint value Press ENTER F4 to change the setpoint value Press QUIT F3 to exit without changing the setpoint UM344 2 September 1995 UM344 2 SELF CLEARING NAKS ON LAST NEXT SEL SEL OPTN OPTN END CONT ALARMS OUT OF SERVICE OFF LAST NEXT SEL OPTN OPTN END 5 1 1 6 Setpoint Track and Hold Block TRACKING SETPOINT NO LAST NEXT f SEL SEL OPTN OPTN END CONT PUSP 55 000 DEG F 0 0000 TO 100 00 SEL SEL EDIT END CONT 5 1 1 7 A M Transfer Block POWER UP MODE AUTOMATIC LAST NEXT SEL SEL OPTN OPTN END CONT AUTOMATIC MODE ONLY NO LAST NEXT SEL SEL OPTN OPTN END CONT August 1995 ON LINE AND OFF LINE OPERATION Press SEL CONT F4 to configure the alarm type Press NEXT OPTN F2 to choose either HIGH or LOW Press SEL CONT F4 to configure Alarm 2 or SEL END F3 to return to the Function Block Menu At the SELF CLEARING NAKS screen press NEXT OPTN F2 to choose ON or OFF At the ALARMS OUT OF SERVICE screen press NEXT OPTN F2 to choose OFF or ON and SEL CONT F4 to return to the Function Block Menu This function block can be configured as tracking or non tracking When configured as tracking the SP will track the PV when the controller is in manual If it is configured as non tracking the SP will remain at its hold value On power up the operating value in
166. t with configuration parameters grouped by like function Those supported are Sensor Input Operator Display Transmitter ID Output Block Alarm Block SP Track amp Hold A M Transfer and Controller Block Each is shown in Appendix A Press SELECT F4 to view or edit a function block s parameters Pressing END F3 will end configuration see step 4 above Go to the section for the selected function block Sections 5 1 1 1 5 1 1 8 The following parameters can be changed INPUT TYPE MEASURED VARIABLE MV UNITS RANGE DAMPING and BURNOUT DIRECTION 1 Press SEL F4 at the Sensor Input Block to display the Input Type Press LAST OPTN F1 or NEXT OPTN 2 to scroll through the Input Options T C OHM mV RTD Press SEL CONT F4 to select the current parameter and continue to the next Input Type configuration parameter Press LAST OPTN or NEXT OPTN 2 to scroll through the Input Options Press SEL CONT F4 to select the current parameter and continue to the MEASURED VARIABLE UNITS Screen Press LAST OPTN F1 or NEXT OPTN 2 to scroll through the units selections These units are listed in Appendix C under the Sensor Input Block description Press SEL CONT F4 to select the current parameter display the Range screen and continue to the next configuration parameter go to step 8 Pressing SEL END F3 will select the current parameter end configuration and return to the On Line Menu
167. the function block is initialized to the Power Up PUSP value 1 At the SP TRACK amp HOLD menu press SELECT F4 to configure the TRACKING SETPOINT block Press NEXT OPTN F2 to choose either YES or NO Press SEL CONT F4 to continue to the PUSP screen At the PUSP screen Press EDIT F1 to edit the setpoint Press ENTER F4 to change the setpoint or QUIT F3 to exit without changing the setpoint Press SEL CONT F4 to return to the Function Block Menu The A M Transfer may be configured to power up in Automatic or Manual From the A M Transfer Menu choose SELECT F4 for the POWER UP MODE screen 1 Press NEXT OPTN 2 to choose between AUTOMATIC AND MANUAL Press SEL CONT F4 for the AUTOMATIC MODE ONLY screen Press NEXT OPTN F2 to choose YES or NO When YES is selected the function block will always remain in the AUTO position Press SEL CONT F4 for the POWER UP VALVE screen 5 9 ON LINE AND OFF LINE OPERATION POWER UP VALVE 0 000 SEL EDIT END SEL CONT 5 1 1 8 Controller Block CONTROLLER ON EL ND LAST NEXT 5 OPTN CONTROLLER TYPE LAST NEXT SEL OPTN OPTN END ACTION REVERSE LAST NEXT SEL OPTN OPTN END PID SEL CONT PROPORTIONAL GAIN MANUAL RESET TRACK NO LAST NEXT SEL OPTN OPTN END SEL CONT 5 1 1 9 End or Review Configuration UM344 2 3 Press EDIT F1 to edit the Power Up Valve setting Press ENTER F4 to ch
168. the test set up and proceed to Section 6 1 3 2 to perform the Current Source Calibration If accuracy is within specifications calibration is not required Disconnect test equipment reconnect all wires and install enclosure cap 6 1 3 2 Current Source Calibration Transmitters with Software Rev 1 only 1 Turn OFF the power supply Disconnect the test resistance decade box from the transmitter Connect the test microammeter to the transmitter as shown in Figure 6 3 and turn ON the power supply 2 From the MXC execute the FIND XMTR program Refer to Section 2 Select CAL TEST F2 from the display menu 1 Step through the MXC screens using the PREV and NEXT buttons to select CURRENT SOURCE calibration Press SELECT F4 The MXC SHORT mV 1 TO RTD 2 will display the adjacent screen WITH COPPER WIRE CONT CURRENT BETWEEN RTDI 2 AND mV 3 CONT 3 Press CONT F4 MXC will display ENTER THE CURRENT UA QUIT ENTER September 1995 6 7 CALIBRATION AND MAINTENANCE 6 8 UM344 2 September 1995 UM344 2 CALIBRATION AND MAINTENANCE 250 p S Pd Bench Power m NINN M Supply DC pp a 7 Siggal Test X x IN NES X 7 bo E do Qi 0282751 1 of 2 na 2 9 2 1 2 3 i x Model 344 Digital ag CE AUI Terminals Microammeter _ _____________________ ___ FIGURE 6 3 RTD
169. tion the DC voltage applied to the safe side of the barrier must be 0 6 Vdc less than the rated barrier working voltage e Active Supply Barrier must be operated within its specified input working voltage e Barrier shunt impedance to ground shall not be less than 50000 for the HART range of frequencies 500 Hz to 2500 Hz Barrier end to end resistance stated by the manufacturer is used in calculating the maximum Network cable length and minimum and maximum network voltages e The barrier shall be installed and wired in accordance with the manufacturers instructions Refer to Appendix B for hazardous area installation drawings 4 3 8 Connection of Miscellaneous Hardware Miscellaneous non signaling hardware e g recorders current meters may be connected to a Point To Point Network in accordance with the following list IMPORTANT No non signaling hardware meters or measuring devices may be connected to a Multi Drop Network since the transmitters in this mode do not output an analog process variable e Miscellaneous hardware may be series or parallel connected to the Network according to its function Miscellaneous hardware must be passive two terminal devices e Miscellaneous hardware may not generate any type of noise or signals other than noise that is inherent in resistive components 4 12 September 1995 UM344 2 INSTALLATION Individual miscellaneous hardware must meet the following requirements
170. to set the damping value to zero seconds ON LINE AND OFF LINE OPERATION 5 1 3 4 Local Pushbutton AUTO MANUAL SETPOINT and VALVE Adjustments Controller ON UM344 2 7 Refer to step 2 above and select the new damping value Count the number of steps damping values from 0 seconds to the selected value This number N will be used in the following step 8 8 Press and release the FULLSCALE pushbutton N times to step to the selected damping value 9 Perform steps 3 and 4 above These procedures assume the Transmitter Controller is field mounted to an operating process and contains an optional Digital Meter to display the AUTO or MANUAL control mode and PROCESS VARIABLE SET POINT and VALVE values Open the sliding cover on top of the Transmitter s housing to access the ZERO FULLSCALE pushbuttons Figure 1 1 then refer to the following procedures to make any required changes to the Controller s operation A Change AUTO MANUAL Control Mode The active control mode is shown by a lit A AUTO M MANUAL IMPORTANT If the present control mode is AUTO and the Controllers A M TRANSFER BLOCK has been configured for AUTOMATIC MODE ONLY a change from AUTO to MANUAL cannot be made using the pushbuttons 1 Note the present control mode as indicated in the Digital Meter Simultaneously press and hold for a minimum of 5 seconds the ZERO FULLSCALE pushbuttons then release both buttons
171. to step 13 If calibration 18 still required repeat step 10 as many times as PRESSING ENTER WILL necessary until the output is within limits then press QUIT and SET TRANSMITTER proceed to step 13 OUTPUT TO A EN 20 00 MA BORT TER The MXC will display the adjacent screen Press ENTER F4 ENTER OUTPUT CURRENT EN The MXC will display the adjacent screen QUIT TER Read the ammeter It should show 20 000 0 0048 mA If the output is within limits press QUIT F3 and exit the calibration mode Calibration is now complete go to step 18 If calibration is required perform steps 16 and 17 Respond to the prompt Key in the current indicated by the ammeter and press ENTER 4 Read the ammeter If output is within limits press QUIT F3 to exit the calibration mode If calibration is still required repeat step 16 as many times as necessary until the output is within limits then press QUIT F3 to exit the calibration mode When calibration is completed disconnect test equipment reconnect transmitter as necessary If transmitter is to operate in the digital mode configure the short address to a number from 1 to 15 before disconnecting test equipment 6 1 2 2 Transmitter Normally Configured for Digital Mode When a transmitter is configured to operate in the digital mode its analog output is parked at 4 mA Although the analog output current function is not used when a transmitter is operating in the digita
172. tter has been designed to meet the following FM CSA CSA approval has been granted FM approval was pending at the time this User s Manual was prepared Intrinsically Safe Class I Division 1 Groups A B C and D Class II Division 1 Groups E F and G Class III Division 1 Explosion Proof Class I Division 1 Groups B C and D Class II Division 1 Groups E F and G Class III Division 1 Non Incendive Class I Division 2 Groups A B C and D Class II Division 2 Groups E F and G Class III Division 2 Electronics Housing NEMA 4X IP 66 IP 68 CENELEC Flame Proof EEx d IIC T4 Tamb 85 C T6 Tamb 60 C T8 Tamb 50 C BASEEFA Ex N IIC T4 Tamb 40 C to 85 C Ex N IIC T5 Tamb 40 C to 60 C Ex N Use Install a voltage limiting device that will prevent loop terminal voltage from exceeding 42 Vdc Electronics Housing IP66 IP68 EMC Compatibility A Declaration of Conformity showing accordance with EN45014 is located on the following page SAA Certification The transmitter has been assessed to the entity concept Consider the following electrical parameters during installation Maximum Input Voltage Ui 42V Maximum Input Current Ii 180 mA Maximum Internal Capacitance Ci 0 uF Maximum Internal Inductance Li 0 mH September 1995 8 11 MODEL DESIGNATION AND SPECIFICATIONS UM344 2 It is a condition of safe use for Ex n and Ex d installations that any unused entry be blocked such that the IP rating i
173. uctions 6 If subjected to vibration inspect all transmitter mounting hardware for tightness Tighten as necessary 7 Inspect pushbutton seals for cracks or punctures Defective seals must be replaced 6 2 3 Transmitter Exterior Cleaning After an exterior inspection of the transmitter the enclosure can be cleaned with the transmitter operating 1 Clean the enclosure except enclosure cap glass with a mild nonabrasive liquid detergent and a soft bristle brush sponge or cloth Rinse the weatherproof enclosure with a gentle spraying of water If the transmitter is subjected to heavy process overspray keep the enclosure free of excessive accumulation of process residue Hot water or air may be used to flush away process residue if the temperature of the cleaning medium does not exceed the operating temperature of the transmitter as listed in Section 8 3 5 Environmental 2 Clean enclosure cap glass with a mild nonabrasive liquid cleaner and a soft lint free cloth 6 2 4 Transmitter Enclosure Interior Inspection Remove the enclosure cap periodically to inspect the interior of the enclosure s terminal compartment Because the enclosure is sealed there should be no accumulation of dust dirt or water condensate in the interior If condensate is present a conduit drain must be installed See Figure 411 September 1995 6 15 CALIBRATION AND MAINTENANCE UM344 2 Check that all wire connections are tight Enclosure threads must
174. uipment workstation or personal computer manufacturer and model amount of memory and operating system For product support outside of North America contact your nearest Moore Products Co subsidiary 18 September 1995 UM344 2 XTC COMMUNICATOR 2 0 XTC COMMUNICATOR The Moore XTC Communicator MXC is a HART protocol based hand held instrument capable of communicating with HART conformant instruments from Moore Products Co and from other manufacturers It provides full access to on line and off line configuration data and to monitoring of process variables An MXC is shown in Figure 2 1 When used with HART conformant field instruments the MXC can e Store up to 100 instrument configurations in its non volatile memory e Download a stored configuration from the MXC to an on line instrument e g a transmitter e Upload a configuration from an on line instrument to the MXC e Store configurations created at and downloaded from a personal computer running Moore XTC Configuration Software e Communicate with a field instrument from any point in the loop Stored 0285680 al FT 865 Transfer Model 344 Communicator Temperature Transmitter Personal Computer The MXC and the field instruments with which it communicates use the HART protocol for remote communications HART uses Frequency Shift Keying Bell 202 standard to superimpose digital signaling on the standard 4 20
175. uipment e g recorder loop powered display to the network Refer to Section 4 3 8 Select sensor cable type Refer to Section 4 3 9 Consider the accuracy limitation of a 2 wire RTD Refer to Section 4 3 10 Read Section 4 3 11 for grounding and shielding recommendations 4 3 3 Transmitter Operating Mode and Network Type A Transmitter will output either an analog current or an equivalent digital signal depending upon the selected operating mode The operating mode also determines the type of Network Point To Point or Multi Drop to be installed as shown in Table 4 1 and the following subsections Select the operating mode during Transmitter configuration as described in the following subsections and Section 5 TABLE 4 1 Operating Mode and Network OPERATING MODE NETWORK TYPE NETWORK FIGURE S September 1995 4 3 INSTALLATION UM344 2 4 3 3 1 Analog Mode The Transmitter outputs a 4 20 mA signal for input to devices such as controllers and recorders Analog operation employs a Point To Point Network comprising a Transmitter Primary Secondary Master and other non signaling devices Transmitter short address is 0 zero Use the optional Digital Meter for local indication of transmitter output The Transmitter is factory configured for analog mode unless otherwise ordered Use an MXC for configuration diagnostics and reporting the current process variable 4 3 3 2 Digital Mode 4 4 The number of Allowable Network E
176. xit the Trend screen to return to the Main Menu STATUS The STATUS key is a quick access key that is pressed to display the Status screen This screen will show the instrument tag name model number software revision number serial number and functional statuses such as fixed current mode and error conditions Exit the Status Screen by again pressing the Status key or by pressing the F4 key CHANGE SP CHANGE VALVE A M and TUNE Keys These are dedicated keys that are reserved for use with XTC Model 340 and 344 Transmitter Controllers These keys are inactive when communicating with an instrument that does not have a controller function block CHANGE SETPOINT Press the CHANGE SP key to view and change the value of the online setpoint of the controller in either automatic or manual mode If the controller is in MANUAL with tracking setpoint then the setpoint cannot be changed The SP is displayed in the same units as the transmitter display configured in the operator s display function block Press the CHANGE SP key again or F3 to exit this mode CHANGE VALVE This key allows you to view and change the position of the valve If the controller is in AUTO the valve cannot be changed Press the CHANGE VALVE key again or F3 to exit this mode 2 4 September 1995 UM344 2 XTC COMMUNICATOR AUTO MANUAL The A M key toggles the controller between automatic and manual control Press the MANUAL key F1 or AUTO key F
177. y Mounting Screw Notes Note 2 1 Enclosure Cap and Digital Meter removed to show Meter mounting hardware 2 Bracket screwed to the Electonics Module 28 3 Meter orientations relative to Transmitter body are shown 4 Jumper W1 Zero and Full Scale Pushbutton Enable Disable Enable jumper pins 2 amp 3 Disable jumper pins 1 amp 2 5 When installing an Electronics Module guide blocks must engage guide posts in housing P1 power connector on Module must engage connector on baseboard FIGURE 4 9 Digital Meter Orientation and Mounting Hardware 4 Rotate the Digital Meter assembly either CW or CCW 90 to the 90 or 270 position slip the assembly under the retaining screws and tighten both screws 5 Position the cable in the cable slot and insert the cable connector into the closest connector J2 or 14 6 Replace the enclosure cap and restore power to transmitter 4 26 September 1995 UM344 2 INSTALLATION Meter Mounting Screw qty 2 Factory Meter Orientation 0 Shown with Enclosure Cap Removed Meter Repositioned 180 Digital LCD Meter Cable connectors J1 to J4 wired in parallel Disconnect Cable Cable guide slot 4 places Notes 1 Meter can be rotated clockwise or counterclockwise either 90 actually 78 and 282 respectively or 180 Meter Repositioned 90 CCW 2 Remove Enclosure Cap for access to Meter 3 Move Meter mounting screws when repositionin
178. y performs a given function no matter what screen is showing A function key is dependent upon the action being performed and the MXC s firmware available selections are shown on the screen s bottom two lines 2 2 1 Dedicated Keys ON This key powers up the MXC and initiates the MXC self test Press and hold the key until the Moore logo appears and then release it If the MXC fails self test a warning message will be displayed The MXC will now show the options available communicate with a field instrument or personal computer or do off line configuration These topics are discussed further in Section 5 To conserve battery power the MXC will shut off after 10 minutes if no keypad key is pressed This auto shut off is disabled when the MXC is on line e g displaying a process variable OFF This key powers down the MXC It may be used at any time During configuration however care should be taken so important information is not discarded When the MXC is in certain modes and communicating with a field instrument or personal computer it will query the user as to whether or not it should be turned off in this mode September 1995 2 3 XTC COMMUNICATOR UM344 2 BACK LIGHT This key turns on the LCD back light for easier viewing of the display in a dimly lighted area The back light is activated by pressing the key and is deactivated by again pressing the key NOTE The back light consumes significant power To extend battery life

Siemens Pacemaker UM344-2 User's Manual

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