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USER`S MANUAL

1. JUMP 3 amp 4 COM LEAD A THERMOCOUPLE RTD or MILLIVOLT INPUT enuen su sn 1eyusuei 9JIM OM LHYH HSSI s u s ANALOG OUTPUT Y 4 20 JUMPER 3 X DE L Tr S 2 WIRE RESISTANCE DC RTD DECADE BOX S POWER 12 TO 42VDC L Q V SUPPLY V TRANSMITTER V LOAD EARTH JUMPER 1 TO 2 12VDC MIN 0 023A x R LOAD GROUND 17 75V MIN w R LOAD 250 ohms JUMPER 1 TO 2 EARTH NOTE 1 THIS GROUND CONNECTION IF SENSORS ARE INHERENTLY S RECOMMENDED FOR BEST RESULTS CTED TO GROUND USE CAUTION AND AVOID MAKING ADDITIONAL GROUND CONNECTIONS WHICH COULD GENERATE GROUND LOOPS AND MEASUREMENT WARNING FOR COMPLIANCE TO APPLICABLE SA ERROR FETY AND PERFORMANCE STANDARDS THE USE OF SHIELDED CABLE IS RECOMMENDED AS SHOWN ADDITIONALLY THE APPLICATION OF EARTH GROUND MUST BE IN PLACE AS SHOWN IN THIS DRAWING FAILURE TO ADHERE TO SOUND WIRING AND GROUNDING PRACTICES MAY COMPROMISE SAFETY AND PERFORMANCE SAFETY GUIDELINES MAY REQUIRE THAT THIS DEVICE BE HOUSED IN AN APPROVED METAL ENCLOSURE OR SUB SYSTEM PARTICULARLY FOR APPLICATIONS WITH VOLTAGES GREATER THAN OR EQUAL TO 75VDC 50VAC GROUND ELECTRICAL CONNECTIONS MODEL 151T 0600 or 155H 0600 TRANSMITTER FIGURE A 4501 764A q Lgd O1 Auu QL ALTERNATE CONNECTION METHODS T C CONNECTION WITH DUAL 2 WIRE RTD DIF
2. Press ENTER at your desired action and the display will indicate NEXT 24 or NEXT depending on whether RAISE or LOWER was selected Now each time NEXT is pressed the display will blink and the 4 0mA output level will decrease or increase by approximately 3 5uA for each press of the NEXT button Once the output reads precisely 4 0mA press ENTER to accept the new zero limit and you will be returned to the TRIM 4 MA prompt Press NEXT to go to the next menu selection and the TRIM 20 MA prompt will be displayed Trim 20MA allows you to make minor adjustments to the output full scale or 20mA signal Series 155H HART Two Wire Transmitter User s Manual mV TC RTD Input Transmitter Display Mode Program Procedure continued Transmitter Display Mode Program Procedure continued 12 Atthe TRIM 20 MA prompt adjustment of the full scale 0000 0 F output value is done exactly as described for 4MA in step 11 THOUSN and will not be repeated here Trim the 20 0mA limit as 0000 0 F required using step 11 as your guide Note that the same HUNDRD precautions apply 0000 0 F After trimming the 20 0mA output limit press NEXT at the TENS TRIM 20 MA prompt to move to the next step and the 0005 0 F TRIM DISPLAY prompt will be indicated ONES T 2 0005 0 F Trim display allows the display to be trimmed by a desired TENTHS 13 offset amount It can be used to make the d
3. Start Up Time 7 seconds typical Operation to specification within 30 seconds typical Response Time 250ms typical for an analog output to reach 98 of the final value for a step change in input Noise Rejection Common Mode 120dB typical Input Conversion Rate 7 conversions per second or 150ms typical Input Filter Three input filter modes are provided to help increase noise immunity Line Frequency amp Filter Smart Smoothing and Validation Time Filter parameters require the HockeyPuck Configuration Software to select and cannot be configured in Display Program Mode Refer to the Transmitter Configuration Manual 8500 612 for more information regarding these filters OUTPUT SPECIFICATIONS This unit employs a two wire process current output Output zero and full scale limits may be trimmed see Configuration amp Calibration The module supports output upscale or down scale failsafe indication The output is also HART compatible Analog Output Output Range 4 20mA DC 3 6 to 23mA with over range Zero and span adjustments are non interacting Analog Zero Any value up to 100 of sensor range Output Action Normal or reverse acting response Failsafe Limits Configurable for 3 6mA downscale 23 0mA upscale or other user specified level software required Output Accuracy Output conversion accuracy is better than 0 05 of output span See Accuracy of Input Specifications and Tables 4A and 4B to compute overall
4. F Tungsten EXT 100 G 20 Rhen E Chromel purple 270 1000 0 3 Constantan red 454 1832 F 0 5 20 J Iron white 210 1200 0 3 Constantan red 346 2192 F 0 5 20 Chromel yellow 270 1372 G 0 3 Alumel black 454 2502 0 5 20 L NA 200 900 0 3 328 1652 0 5 20 Nicrosil orange 270 1300 0 3 NISIL red 518 2372 F 0 5 20 Pt 13 Rh black 50 1768 0 8 Constantan red 122 3214 F 1 5 F 25 s Pt 10 Rh black 50 1768 8 G Constantan red 58 3214 1 5 F 25 C T Copper blue 270 400 0 3 Constantan red 454 752 F 0 5 20 U Copper black 200 600 0 8 328 1112 F 1 5 F Nickel EXT 40 C 5 5 mV NA NA 15 to 115mV 01 3mV General Input Specifications Reference Test Conditions Output is 4 20mA into 500Q Ambient Temperature 77 F 25 C Power Supply 24V DC Accuracy Digital input accuracy is 0 05 of the millivolt or ohm equivalent input reading or the value indicated in Table 4 whichever is greater D A output conversion accuracy is 0 05 of output span The optional display does not include the small DAC error present in the output Overall I O accuracy is the effective sum of the input and output accuracy For thermocouple unit
5. This transmitter also includes a built in 22 point linearizer function Following basic two wire design the output and DC power share the same pair of twisted copper wires The transmitter connected in series with a load and DC supply provides an output loop current proportional to the input signal Communication with this model is also done over the output wires using the HART communication protocol Field programmability of the unit in the absence of a host computer and HART Interface Adapter may also be accomplished via the optional LCD display ATW TLD or an after market Model 275 Hand Held HART Configurator Series 155H HART Two Wire Transmitter User s Manual mV TC RTD Input The lightweight construction and compact size of this transmitter permits a variety of mounting options The standard model includes integrated mounting holes with captive screws for simple surface mount applications A DIN rail mounting clip may be ordered separately An optional explosion proof aluminum enclosure is also available and includes a display window for viewing a module equipped with the display option A pipe mounting kit may also be ordered for mounting this enclosure to common 2 inch pipe for improved stability An optional 4 1 2 digit LCD display provides visual indication of the transmitter s output The display also has two push buttons to facilitate in field configuration of the transmitter The display may indicate in C F R
6. PERSONAL COMPUTER RUNNING WINDOWS 95 98 OR NT 155H TRANSMITTER TEST POINT TEST CLIPS gt ATTACH ADAPTER TO COM PORT ON THE PC THERMOCOUPLE RTD PC RUNNING COM PORTS ARE SOFTWARE CONFIGURED or MILLIVOLT INPUT ACROMAG CONFIGURATION RS232 SOFTWARE 9 NON POLARIZED INTERFACE ADAPTER 6 FOOT OF CABLE 2 9 CONNECTOR DB9S Z TEST CLIPS MAY MATES TO THE DB9P CONNECTOR AT THE CONNECT TO TEST SERIAL PORT OF THE POINTS OF 155H HOST COMPUTER TRANSMITTER SERIES 155H COMPUTER CONNECTIONS DC POWER 12 TO 42VDC L EARTH GROUND 4501 763A enuen sJes 1eyusuei 9JIM OM LHYH HSSI s u s q 18 O L AU JL 4 WIRE RTD KELVIN 3 WIRE RTD NO J UMPERS PRESENT JUMPER 3 TO 4 EARTH GROUND EARTH GROUND TC INPUT JUMPER 3 TO 4 VOLTAGE SOURCE lt TERMINAL CONNECTIONS PER INPUT TYPE 2 WIRE JUMP 1 amp 2 3 WIRE C COM 4 WIRE RTD COM LEAD B JUMP 1 amp 2 3 RTD COM COM LEAD B G JUMP 3 amp 4 JUMP 3 amp 4 COM LEAD A JUMP 3 amp 4
7. and K units and includes an 11 segment bar graph that indicates input measurement in percent of calibrated span A second line of information on the display indicates tag information diagnostic messages configuration prompts and configuration menu selections Series 155H modules are designed to withstand harsh industrial environments They feature RFI CRFI EMI ESD and EFT plus low temperature drift wide ambient temperature operation and isolation from input to output They also have low radiated emissions per CE requirements The safe compact rugged reconfigurable and reliable design of this transmitter makes it an ideal choice for control room and field applications Acromag also offers a broad range of other transmitter isolator and alarm models to reliably serve almost any application please consult the factory Key 155H Features e Agency Approvals CE CSA and FM Easy Windows Configuration Fully reconfigurable via our user friendly Windows 95 98 or NT HockeyPuck Configuration Software amp PC 155H HART Interface Adapter e HART Communication Support The unit is programmed via the process loop using the industry standard HART communication protocol and is compatible with HART devices from other manufacturers e Multi Function LCD Display The optional 4 1 2 digit LCD display provides local indication of the transmitter output in C F R and K units graphical indication in percent of cal
8. cable is recommended as shown in Drawing 4501 764 Further the application of earth ground must be in place as shown in Drawing 4501 764 Failure to adhere to sound wiring and grounding practices may compromise safety amp performance 3 0 MODULE CONFIGURATION This transmitter module needs to be configured for your application Configuration is normally accomplished using Acromag s Windows 95 98 NT HockeyPuck Configuration Software and PC 155H HART Interface Adapter Kit Model 155C SIP Configuration may also be accomplished via the push buttons of the optional ATW TLD display Complete transmitter calibration and configuration details using the PC 155H HART Interface Adapter and HockeyPuck Configuration Software is included in Transmitter Configuration Manual 8500 612 For configuration details using an after market HART Configurator refer to the Model 275 Transmitter Configuration Manual 8500 613 Field configuration of the transmitter via the push buttons of the optional ATW TLD display is covered in the following paragraphs Note that the display push buttons can be disabled via the HockeyPuck Configuration Software or the Model 275 HART Configurator to help prevent tampering or inadvertent reconfiguration in the field If you cannot achieve configuration via the optional display then you will need to use the Configuration Software and Interface Adapter to unlock the display push buttons first Series 155H HART Two Wire Tra
9. details Electrical Connections Terminals of this unit may accommodate wire from 10 24 AWG stranded or solid copper Strip back wire insulation at least 1 4 inch before installing into terminal screws Input wiring should ideally be shielded twisted pair Since common mode voltages can exist on signal wiring adequate wire insulation should be used and proper wiring practices followed It is further recommended that transmitter output and power wiring be separated from the input signal wiring for safety as well as for low noise pickup Note that the optional plug in display can be easily removed to provide access to terminal wires with or without power applied Be sure to remove power and or disable the load before disconnecting wires to uninstall the module or before attempting service All wired connections must be made with power removed Exercise caution when tightening down input connections as threads may be damaged if too much torque is applied CAUTION Risk of Electric Shock More than one disconnect switch may be required to de energize the equipment before servicing 1 Output Power Connect a DC power supply and load per Electrical Connections Drawing 4501 764 This transmitter operates from DC power only Power supply voltage is not critical and should be from 12 to 42V DC The power supply voltage must be adequate to furnish full scale current to the load about 23mA plus transmission line drop plus 12VDC minimum t
10. is an after market item not available from Acromag please consult the factory for references if required Refer to the Model 275 Configuration Manual 8500 613 for more information regarding configuration using this method ACCESSORIES The functionality and applications of the basic 155H 0600 transmitter can be expanded with the following accessories DIN Rail Mounting Kit Model ATW DIN A back plate with DIN rail clips installed for convenient T Type DIN rail mounting of 155H transmitters Backplate is threaded 8 32 for attachment to the module via the two captive mounting screws of the transmitter enclosure Dimensions Refer to Drawing 4501 766 Shipping Weight 0 5lbs 0 23 Series 155H HART Two Wire Transmitter User s Manual mV TC RTD Input Pipe Mounting Bracket For Housing Model ATW PM2 This stainless steel bracket allows ATW XPW enclosures to be mounted to 2 inch diameter horizontal or vertical pipe for improved mechanical stability Bracket Dimensions See Drawing 4501 768 Shipping Weight 1lbs 0 45Kg LCD Display amp Field Programmer Model ATW TLD A two line 4 1 2 digit plug in type Liquid Crystal Display First line of display has six 8mm 0 31 inch digits plus polarity that indicates the input measurement in C F R and K The second line of the display has seven 6mm 0 25 inch alphanumeric characters used to display a configurable tag number fault messages FAIL SA
11. sensor offset curve optional 22 point linearization Linearization disable Failsafe Setup Failsafe Other report with programmed Failsafe mA Value selection e Transmitter Filtering Setup Line frequency smart smoothing or validation time parameters e Output Setup Damping parameter e Local Display Setup Local Keys enable disable label and display variable setting e Setup Tag descriptor message sensor serial number and date information Refer to Transmitter Configuration Manual 8500 612 for more information regarding module configuration using the HockeyPuck Configuration Software and the PC 155H HART Interface Adapter NOTE The Acromag 155H Transmitter includes automatic self calibration of the input These transmitters will automatically check the NIST traceable zero and full scale calibration reference standards every three seconds and make corrections as required without disturbing the 4 20mA loop current As such no method for recalibration of the input signal is provided This helps simplify calibration as no input source or calibrator is required to complete configuration Equipment Required An accurate current or voltage meter is required to monitor the output signal if you intend to trim the output limits steps 11 and 12 below This meter must be accurate beyond the module specifications for best results No input sensor or source is required to complete configuration General Tran
12. software also allows a module configuration to be printed in summary form for convenient documentation The Transmitter Configuration Manual includes additional information regarding transmitter configuration Refer to Drawing 4501 763 for computer Interface Adapter and module connection details Electrical Connections See Drawing 4501 763 Shipping Weight 1lbs 0 45Kg Model 275 Transmitter Configuration Manual 8500 613 This instruction manual covers the field configuration of Acromag Series 155H puck style Transmitters using the industry standard Model 275 Hand Held HART Configurator available from Fisher Rosemount Shipping Weight 0 5lbs 0 23Kg NOTES G DC VOLTAGE INPUT 0 3mA RTD SENSOR y EXCITATION ISOLATION gt INPUT x INPUT SIGNAL MULTIPLEXER A D CONVERTER 1 0 ISOLATION OPTIONAL LCD INDICATOR amp PUSH BUTTON CONFIGURATOR Ta RTN REFERENCE COLD JUNCTION COMPENSATION NON VOLATILE MEMORY TEST POINT MICROCONTROLLER A D CONVERTER 4 4 20 R LOAD OUTPUT 4 20mA HART MODEM Two Wire pem INTERFACE w HART lt TEST POINT gt ISOLATION SERIES 155H SIMPLIFIED SCHEMATIC 4501 762A enuen su sn 1eyusueiJ 9JIM OM LHYH HSSI s u s q 18 O L AU
13. when no sensor was connected to the input in operating mode At the prompt SELECT SENSOR FAIL SAFE press ENTER if you wish to enable disable the sensor fail safe detection system The present fail safe status is displayed first followed by the opposite selection ON or OFF when you press NEXT When your desired failsafe condition is displayed ON or OFF press ENTER and the transmitter will change to the new setting and the screen will return to the SELECT SENSOR FAIL SAFE prompt NOTE Disable the sensor fail safe feature when attempting to calibrate the unit with an external thermocouple or RTD calibrator or calibration errors may result This feature can be safely re enabled after calibration is complete Press NEXT to proceed to the next menu selection and the SELECT FAIL SAFE REPORT prompt will be displayed This will allow you to configure the output response to a fail safe condition at the input At the SELECT FAIL SAFE REPORT prompt press ENTER to change the fail safe reporting mechanism or NEXT to skip to the next menu selection Fail safe reporting determines the process loop response to a failure condition You can select HIGH for upscale detection loop driven to 23 0mA LOW for downscale detection loop driven to 3 6mA or OFF to disable reporting Transmitter Display Mode Program Procedure continued 11 Selecting OFF does not disable fail safe indication only th
14. with the leftmost digit The digit that may be modified will blink indicated in underlined italics below Pressing NEXT will increment the blinking digit from the current setting through 1234567890 When the correct digit is displayed press ENTER to accept the digit and move one digit to the right Repeat the selection process moving left to right until all available display trim value digits have been adjusted or confirmed For example if 0005 0 F is our display trim value the transmitter will sequence as follows 14 15 After the tenths digit has been changed as required press ENTER to return to the TRIM DISPLY prompt The new trim value will be indicated on the line above TRIM and DISPLY Press NEXT to go to the next menu selection and the SELECT LANGU AGE prompt will be displayed The Select Language function allows the transmitter to be configured in any one of four available display languages English German French and Spanish At the SELECT LANGU AGE prompt press ENTER and the current language setting will be displayed first followed by optional choices each time NEXT is pressed The display will alternately indicate ENGLISH DEUTSCH FRENCH or ESPANOL Continually pressing NEXT will wrap through the available selections Press ENTER when your desired language is displayed to change to that language and the RETURN TO OPERATE MODE prompt will be displayed P
15. 55H HART Two Wire Transmitter User s Manual mV TC RTD Input C Total input terminal capacitance of field instruments primary master is excluded Cf is computed as the sum of all Cn values multiplied by 5000 Cn is an index integer that corresponds to the input terminal capacitance of a field instrument as determined from the following table for field instruments without Cn values use Cn 1 Table 5 Cn Value Per Instrument Capacitance Field Instrument Capacitance Cn VALUE C 5000pF 5000pF C 10000pF 2 10000pF lt C lt 15000pF_ 3 15000pF lt C lt 20000pF_ 4 20000 C 2500pp 5 25000 lt C 30000pp 6 Thus if R 2500 C 40pF foot 1 6 5000 35000 then L 65000000 250 40 35000 10000 40 or 5375 feet 1612 5 meters ENCLOSURE PHYSICAL SPECIFICATIONS See Enclosure Dimensions Drawing 4501 766 Units are encapsulated in a general purpose plastic enclosure that supports a variety of mounting options Dimensions See Drawing 4501 766 Housing Sealed Lexan plastic with waterproof potting Connectors Wire Range AWG 10 24 stranded or solid copper Printed Circuit Boards Military grade FR 4 epoxy glass Mounting See Accessories for mounting options Variations of surface and DIN rail mounting are supported Mounting Position No effect on measurement value Display See Accessories for display option Refer to Drawing 4501 765 for display dimension
16. Acromag 4 Series 155H Smart Two Wire Temperature Transmitter w HART Protocol Support mV TC RTD Input USER S MANUAL ACROMAG INCORPORATED 30765 South Wixom Road P O BOX 437 Wixom MI 48393 7037 U S A Tel 248 624 1541 Fax 248 624 9234 Copyright 1999 Acromag Inc Printed in the USA Data and specifications are subject to change without notice 8500 610 A99H000 Series 155H HART Two Wire Transmitter User s Manual mV TC RTD Input The information contained in this manual is subject to change without notice Acromag Inc makes no warranty of any kind with regard to this material including but not limited to the implied warranties of merchantability and fitness for a particular purpose Further Acromag Inc assumes no responsibility for any errors that may appear in this manual and makes no commitment to update or keep current the information contained in this manual No part of this manual may be copied or reproduced in any form without the prior written consent of Acromag Inc Table of Contents Page 1 0 INTRODUCTION 2 DESCRIPTION Key 155H Features 3 ACCESSORY ITEMS iid 3 DIN Rail Mounting Kit esee 3 LCD Display amp Field Configurator 3 Explosion Proof Housing 4 Pipe Mounting Kit 4 Sof
17. F HART Index 6 see Table 5 Network Topology Point To Point Transmitter Quantity 1 only Network Signal and Connection Analog 4 20mA single current loop see Drawing 4501 763 Network Resistance Required 2500 minimum to 11000 maximum for HART communications Multi Drop Transmitter Quantity 1 to 15 Network Signal and Connection Digital parallel connected Network Resistance Required 2500 minimum to 11000 maximum for HART communications Two Wire Cable Type Twisted single pair shielded copper Conductor Size for Network Length 24 AWG minimum less than 5000 feet or 1500 meters 20AWG minimum 16AWG maximum greater than 5000 feet or 1500 meters Cable capacitance has a direct effect on cable length the lower the capacitance the longer the cable see Table 5 Recommended Conductor Belden 8641 24AWG Belden 8762 20AWG Maxiumum Cable Length Calculation The maximum permissible single pair cable length is 10000 feet 3000 meters or less as determined via the following calculation L 65000000 R C 10000 C L maximum total length in feet of cable used to construct network R resistance in ohms that is the sum of the current sense resistor and barrier resistance both return and supply if any in the network and resistance of the wire C Cable capacitance per unit length pF foot or pF meter between one conductor and the other conductor connected to the shield Series 1
18. FE DFAULT configuration prompts and configuration selections An eleven segment bar graph is also included which indicates the input measurement in percent of calibrated range The second line of display information is used for tag number fail safe fault indication and display fault indication in operating mode It is also used for in field reconfiguration messages and menu selections in Display Program Mode Two push buttons labeled NEXT and ENTER are included and used to configure the transmitter These buttons may be locked out via the HockeyPuck Configuration Software or the Model 275 HART Configurator Refer to Drawing 4501 765 for display details Key transmitter configuration parameters can be programmed via this display except for entering a custom linearization curve and selecting Ni and Cu RTD types Other exceptions apply see Transmitter Configuration Manual 8500 612 for more information Refer to the Configuration section of this manual for the configuration procedure using the display option Fail Safe Indication Display alternates the message FAIL SAFE in response to the following input conditions open thermocouple open RTD short circuited RTD or RTD lead break any lead A fail safe indication may also occur if the lead wire resistance is too great see Specifications Display Dimensions Refer to Drawing 4501 765 Shipping Weight 0 5105 0 23Kg Explosion Proof Housing w Window Model ATW XPW This cast
19. FERENTIAL CONNECTION EXTERNAL CJ SENSING JUMPER 3 TO 4 JUMPER 3 TO 4 Ni100 RTD AT TERMINALS NEGATIVE LEADS TIED TOGETHER EXTERNALLY NEAR TRANSMITTER RTD a S DO NOT GROUND x RTDA NOTE 1 nen L EARTH ROTE A GROUND OUTPUT AND DISPLAY L 7 7 REPRESENT THE DIFFERENCE T C A T C B CONNECTION TYPES Dual 2 Wire Independent Dual 2 Wire Secure ELECTRICAL CONNECTIONS Dual 2 Wire Average _ Dual 2 Wire RTD Differential MODEL 151T 0600 or 155H 0600 TRANSMITTER NOTE 1 THIS GROUND CONNECTION IS RECOMMENDED FOR BEST RESULTS IF SENSORS ARE INHERENTLY CONNECTED TO GROUND USE CAUTION AND F IG U RE B AVOID MAKING ADDITIONAL GROUND CONNECTIONS WHICH COULD GENERATE GROUND LOOPS AND MEASUREMENT ERROR A501 764A enuen su sn 1eyusueiJ 9JIM OM LHYH HSSI s u s q Lg O1 Auu ATW TLD DISPLAY OPTIONAL ATW TLD DISPLAY DIMENSIONS AND FEATURES 61 DISPLAY CONTAINS TWO LINES OF 2 30 D SEL 0 03 INFORMATION PLUS 58 42mm WINDOW 21 59 ELEVEN SEGMENT BAR GRAPH NEXT DISPLAY MAY BE HOT PLUGGED INTO Q TOP OF MODULE RECESSED A SINGLE DISPLAY PUSH BUTTONS MAY BE USED TO FOR MODULE PROGRAM MULTIPLE 2 50 RECONFIGURATION TRANSMITTERS 63 5mm 0 45 MODEL ATW TLD 11 43mm PLUG IN DISPLAY AND IN FIELD TOP OF DISPLA
20. LIPS 54 36 155 0600 or 151T 0600 TRANSMITTER 2 35 60mm 1 55 40mm 0 86 21 84mm ATW DIN Y DIN CLIPS NOTE ALL DIMENSION ARE IN INCHES MILLIMETERS 1 13 28 7mm 8 32 THREAD 2 PLACES BOTTOM VIEW MODEL ATW DIN DIN RAIL MOUNT 0 86 84 1 45 97mm SIDE VIEW 4501 770A enuen su sn 1eyusueiJ 9JIM OM LHYH HSSI s u s q Lgd O1 Auu 0 1 2 NPT PIPE ATW PM2 2 ID PIPE PIPE MOUNT BRACKET FASTENERS INCLUDED 151 155 TRANSMITTER W ATW TLD DISPLAY ATW XPW ALUMINUM HOUSING A MODEL 151T 155H TRANSMITTER WITH ATW TLD DISPLAY INSTALLED AND MOUNTED IN OPTIONAL ATW XPW EXPLOSION PROOF ENCLOSURE AND SECURED WITH AN ATW PM2 PIPE MOUNT BRACKET TO 2 INCH PIPE o PIPE CLAMP FOR 2 INCH PIPE e e 3 4 SQUARE E 5 16 18 THREAD E STEEL TUBING mm 5 25 133mm a lt 5 16 DIA HOLE 5 PLACES ALL FOUR SIDES 1 4 20 x 1 5 BOLT ATW PM2 PIPE MOUNT BRACKET SHOWN WITH FASTENERS INCLUDED 1 4 20 x 1 5 BOLT 4501 768A enuen su sn 1eyusueiJ 9JIM OM LHYH HSSI s u s q Lg O1 Auu
21. TER when your desired units are displayed The transmitter will be set to those units and you will be returned to the SELECT UNITS prompt At the SELECT UNITS prompt press NEXT to move onto the next menu selection and the CHANGE ZERO prompt will be displayed Change Zero allows the zero or 4mA output point of the input signal to be changed This is referred to as the Zero or Lower Range Value LRV At the CHANGE ZERO prompt the current zero value of the input signal is displayed on the line above CHANGE and ZERO Press ENTER at the CHANGE ZERO prompt and the transmitter will indicate the sign of the zero value with PLUS or MINUS Pressing NEXT cycles between the plus and minus selections until ENTER is pressed to make a selection Again the numeric value on the top line above PLUS and MINUS represents the current zero value Press ENTER to select PLUS or MINUS as desired and the display will then allow each digit of the zero value to be changed in sequence beginning with the leftmost digit The digit that may be modified will blink indicated in underlined italics below Pressing NEXT will increment the blinking digit from the current value through 1234567890 When the correct digit is displayed press ENTER to accept the digit and move one digit to the right Repeat the selection process moving left to right until all available zero value digits have been adjusted or confirmed For exa
22. W Housing Dimensions 4501 767 he 21 ATW DIN DIN Rail Mounting Details 4501 770 ses 22 ATW PM2 Pipe Mounting Details 4501 768 23 IMPORTANT SAFETY CONSIDERATIONS It is very important for the user to consider the possible adverse effects of power wiring component sensor or software failures in designing any type of control or monitoring system This is especially important where economic property loss or human life is involved It is important that the user employ satisfactory overall system design It is agreed between the Buyer and Acromag that this is the Buyer s responsibility Windows 95 98 NT are registered trademarks of Microsoft Corp 1 0 INTRODUCTION These instructions cover the hardware functionality of the HART transmitter model listed in Table 1 See Specifications for specific model details Refer to Accessories to add functionality to this model Supplementary sheets are attached for units with special options or features not covered in this manual Table 1 Model Covered in This Manual Series Approvals Output Factory Input Type Mounting Power Configuration Notes Table 1 1 Agency approvals include CE CSA and FM Each module is shipped with a default factory configuration that can be easily reconfigured to suit your needs To receive modules with a specific configuration to match your application consult the factory or your local representative Information rega
23. Y CONFIGURATOR 1 55 151T 060D TRANSMITTER NOTE ALL DIMENSION ARE IN INCHES MILLIMETERS 4501 765 enuen su sn 1eyusueiJ 9JIM OM LHYH HSSI s u s q 18 O L AU 02 1511 155H WITHOUT DISPLAY 151 155 WITH ATW TLD DISPLAY 1 70 5 43 18 2 30 58 42 0 85 21 59mm 2 50 63 5mm 11 43mm 1 55 40mm 60mm 151 155 TRANSMITTER ENCLOSURE DIMENSIONS NOTE ALL DIMENSION ARE IN INCHES MILLIMETERS 4501 766A enuen su sn 2 9JIM OM LHYH HSSI s u s q 18 O L AU 3 4 NPT HOUSING 1 2 NPT NIPPLE 5 16 DIA 2 PLACES 2 PLACES r gt A r 2 j L B ME 151T 155H o SET SCREW TRANSMITTER 2 PLACES 5 0 W ATW TLD 127mm DISPLAY eee H at 0 80 0 76 m 2 5 20 3mm db 19mm eo 63 5mm lt 118 1mm gt lt 127mm ALLOW 5 65 FOR COVER REMOVAL MODEL ATW XPW ENCLOSURE DIMENSIONS 151T 155H TRANSMITTER SHOWN INSTALLED IS NOT INCLUDED WITH ATW XPW ENCLOSURE 5 25 133mm T GROUND SCREW Y 4501 767A enuen sJes 2 9JIM OM LHYH HSSI s u s q 18 O L AU 151 155 WITH ATW DIN DIN RAIL MOUNTING C
24. a is used to identify the particular RTD curve The value of alpha is derived by dividing the resistance of the sensor at 100 C by the resistance at 0 C a For Pt 1000 this is 138 50 100 00 or 1 385 also shown as 0 003850 Q C 2 Includes the transmitters s absolute digital accuracy and ambient temperature effect over the entire operating range Does not include sensor accuracy 3 Shaded entries cannot be selected via Display Program Mode of the optional ATW TLD display and require the PC 155H HART Interface Adapter and HockeyPuck Configuration Software to select Thermocouple User configurable for each of eleven types of thermocouples shown in Table 4B Linearization cold junction compensation CJC and fail safe open circuit or lead break detection is included Cold Junction Compensation Digital self correcting over ambient temperature range to within 0 5 C 0 9 F Input Impedance 0 2 for T C inputs Maximum Lead Resistance 1KQ non grounded junction 10Q grounded junction DC Voltage See Table 4B 15 115mV DC Input Impedance 1 for millivolt input Minimum Input Span 3mV Table 4B TC amp Millivolt Types Ranges amp Input Accuracy NBS ISA TC ANSI Temp Range Acc Type TC Material Color Min Span Typ Pt 10 Rh 260 1820 C 0 8 Pt 6 Rh red 109 3272 F 1 5 F 100 Tungsten white 0 2320 C 5 Rhenium red 32 4208
25. accuracy Output Compliance 12V Typical Output Load Resistance Range 0 to 5000 typical Under Range Current 3 8mA This is different from the down scale failsafe limit of 3 6mA by design Over Range Current 20 75mA This is different from the upscale failsafe limit of 23mA by design Output Load Limitations The maximum loop resistance including the optional display is computed as R Load Q Maximum Vsupply 12V 0 023 With 24V DC Supply Maximum R Load 521 7Q 12 Output Damping Damping be set anywhere between 0 32 seconds and is used to set the amount of exponential damping filtering to be applied to the input signal Damping will increase the response time of the transmitter to help smooth the output when the input signal contains rapid variations Damping is programmable via the HockeyPuck Configuration Software HART Compatible Output HART Protocol HART is an acronym for Highway Addressable Remote Transducer which is a convenient method of transmitting and receiving digital data via the 4 20mA process loop Operates using a frequency shift keying method based on the Bell 202 communication standard and superimposes a sine wave at two frequencies on the DC signal cables of the process loop to represent a set and clear bit A 0 bit is represented by a 1200Hz sine wave and a 1 bit uses a 2400Hz sine wave The amplitude of the sine wave is approximately 0 5mA Transmitter Input Capacitance 27000p
26. aluminum explosion proof enclosure includes a clear window for viewing 155H or 151T transmitters equipped with the optional display Enclosure is CSA and FM approved for Class I Div 2 Groups B C and D Class II Div 2 Groups E F and G and Class Div 2 Housing has back plate installed for easily mounting 151T 155H transmitters within the enclosure An optional pipe mount bracket is available for attaching this enclosure to common 2 inch pipe see ATW PMe below Housing Dimensions See Drawing 4501 767 Housing Material Cast Aluminum NEMA 4X IP66 68 Conduit Entrances Two 34 NPT threads with two 72 14 NPT reducers installed Shipping Weight 2 7lbs 1 2Kg Software Interface Package Model 155C SIP This software interface package includes a PC 155H HART Interface Adapter Windows 95 98 NT HockeyPuck Configuration Software and Transmitter Configuration Manual 8500 612 It is used to fully configure Series 155H Transmitters The interface adapter provides an isolated interface converter between the PC and the 155H The adapter is powered from the 5232 interface and has a DB9S connector that mates to the common DB9P serial port connector of a host computer 14 The adapter also has two non polarized test clips at the end of 6 feet of cable for direct parallel connection to a HART compatible process loop The configuration software is supplied on CDROM and requires 40MB of free hard drive space to install The
27. ble and downloadable to the modules via this software and interface adapter The software also allows a configuration to be printed for documentation purposes The Transmitter Configuration Manual 8500 612 is included with this kit and includes additional information regarding configuration Refer to Drawing 4501 763 for computer interface adapter and module connection details Model 275 Transmitter Configuration Manual 8500 613 This instruction manual covers the field configuration of Acromag Series 155H puck style Transmitters using the industry standard Model 275 Hand Held HART Configurator available from Fisher Rosemount 2 0 PREPARATION FOR USE UNPACKING AND INSPECTION Upon receipt of this product inspect the shipping carton for evidence of mishandling during transit If the shipping carton is badly damaged or water stained request that the carrier s agent be present when the carton is opened If the carrier s agent is absent when the carton is opened and the contents of the carton are damaged keep the carton and packing material for the agent s inspection For repairs to a product damaged in shipment refer to the Acromag Service Policy to obtain return instructions It is suggested that salvageable shipping cartons and packing material be saved for future use in the event the product must be shipped This module is physically protected with packing material and electrically protected with an anti static bag during s
28. diated Field Immunity Complies with IEC1000 4 3 at 10V M 1KHz w 80 AM 80 to 1000MHz 200Hz w 100 AM 895 905MHz Electrical Fast Transient Immunity EFT Complies with 1000 4 4 Level 3 2KV DC power 2KV cables Conducted Radio Frequency Immunity Complies with IEC 1000 4 6 at 1KHz w 80 AM 0 15 80 2 CONFIGURATION This transmitter may be configured via the following three methods Software Interface Package Model 155C SIP Interface Adapter Configuration Software Manual Full PC configuration of all transmitter parameters requires the PC 155H HART Interface Adapter and HockeyPuck Configuration Software of this kit Transmitter Configuration Manual 8500 612 is included and contains a complete configuration procedure using this software Display Configurator Option Model ATW TLD Field program of transmitter configuration parameters can be accomplished with the push buttons of this display except for entering a custom linearization curve and selecting Ni and Cu RTD types Other exceptions apply see the Transmitter Configuration Manual 8500 612 for more information Refer to Configuration section of this manual for the configuration procedure using the display option HART Configurator Model 275 A common industry standard hand held instrument for configuring HART transmitters that can be used to configure this device when a device description file for the Acromag 155H is present This
29. differ from the default configuration and will require that the transmitter be reconfigured to suit your needs This is accomplished with Acromag s user friendly Windows 95 98 or NT HockeyPuck Configuration Software and PC 155H HART Interface Adapter Kit Model 155C SIP or via the push buttons of the optional display Model ATW TLD Configuration is normally done prior to field installation Mounting Refer to Enclosure Dimensions Drawing 4501 766 for mounting and clearance dimensions Make allowances in determining clearance for the optional display ATW TLD or DIN rail mount ATW DIN Surface Mounting The standard transmitter has two integrated mounting holes with 8 32 captive screws for surface mount applications DIN Rail Mounting The optional ATW DIN backplate and mounting clips allow the module to be mounted to T type DIN rails by simply snapping the unit in place Always use suitable fastening hardware to secure the DIN rail to the mounting surface Refer to Drawing 4501 766 for DIN mounting details Optional Enclosure Mounting This module may be mounted in an optional aluminum housing ATW XPW This housing has a backplate installed that allows the transmitter and optional display to be mounted inside It includes a clear window for easy view of the display An optional bracket ATW PM2 allows the housing to be mounted to 2 inch horizontal or vertical pipe for increased mechanical stability See Accessories for more
30. e output response to the fail safe condition Press ENTER at the SELECT FAIL SAFE REPORT prompt and the display will indicate the current setting first followed by the optional settings upon pressing NEXT Choose HIGH OFF or LOW by pressing ENTER at your desired setting and you will then be returned to the SELECT FAIL SAFE REPORT prompt Press NEXT to proceed to the next menu selection and the TRIM 4 MA prompt will be displayed Trim 4MA allows you to make minor adjustments to the output zero or 4mA signal If you wish to trim the 4 00mA output limit press ENTER at the TRIM 4 MA prompt WARNING The 4 00mA limit is already factory calibrated to a precision standard traceable to NIST Trimming the output limit voids traceability of calibration to NIST Do not arbitrarily trim the output unless a precise method of measuring the output current is available Further the 4 0mA limit should not be trimmed more than 0 05mA or transmitter operation may be impaired After pushing ENTER the transmitter will output a current equal to its internally set 4mA limit This value should be precisely monitored with a very accurate meter If the meter does not precisely read 4 0mA then adjustments may be made You may adjust this current up to 0 05mA At this point the display will alternately display the following messages each time the NEXT key is pressed RAISE MA OUT LOWER MA OUT
31. eric value or measurement on the top line and the corresponding prompt message on the bottom line A displayed prompt message is indicated in brackets in the following procedure Several display messages in sequence may be used to complete a single prompt message The NEXT button is typically used to scroll through and wrap around available choices while the ENTER button is used to make a selection and return to the menu prompt Display Program Mode allows the following configuration parameters to be adjusted in sequence SELECT INPUT Select a sensor input type SELECT UNITS Select temperature units CHANGE ZERO Change 4mA lower range input value CHANGE FULL SCALE Change 20mA full scale input value SELECT SENSOR FAIL SAFE Enable Disable fail safe indication SELECT FAIL SAFE REPORT Change the output fail safe reporting mechanism upscale downscale or none e TRIM 4MA Trim the 4mA output current limit TRIM 20MA Trim the 20mA output current limit e TRIMDISPLAY Trim the display offset value Use of the PC 155H HART Interface Adapter and HockeyPuck Configuration Software allows access to additional transmitter configuration parameters shown below The following items cannot be adjusted in Display Program Mode Input Setup Some sensor types can only be selected via the software Cold Junction Compensation and optional fixed cold junction temperature options cannot be configured Configuration of a
32. erminal voltage to the transmitter Variations in power supply voltage or load resistance within rated limits has negligible effect on module accuracy 2 Input Connect the input per Connection Drawing 4501 764 Observe proper polarity when making connections 3 PC 155H HART Interface Adapter Optional The HART Interface Adapter included in Acromag Kit 155C SIP connects directly to the process loop typically in parallel with the transmitter at the test points provided or the load 2500 minimum required via the test clips provided The DB9S Interface Adapter connector plugs directly into the common DB9P serial port connector of a host computer The test clips are not polarized and are usually connected parallel to the load The module includes test points at its output terminals to accommodate these clips also Refer to Drawing 4501 763 for connection details In any case a 2500 minimum load resistance is required 4 Grounding This two wire transmitter is potted in a general purpose plastic enclosure and does not require an earth ground connection If this transmitter is mounted in a metal housing a ground wire connection is typically required The optional aluminum housing ATW XPW also includes provisions for grounding Connect the ground terminal of this enclosure Green Screw to earth ground using suitable wire per applicable codes WARNING For compliance to applicable safety and performance standards the use of shielded
33. erved for a special 4 wire RTD input custom order required MV Millivoltage input HHTONLY Hand Held Setup Factory use only T C B Type B thermocouple T C C Type C thermocouple T C E Type E thermocouple Note that pressing NEXT will continue to wrap through the menu selections until ENTER is pressed at a desired input type selection If no sensor change is desired simply press ENTER at the current sensor type to confirm the selection After pressing ENTER the display returns to the SELECT INPUT prompt At the SELECT INPUT prompt press NEXT to move onto the next menu selection If the selected input type is a thermocouple or RTD from Step 4 then SELECT UNITS will be displayed Otherwise CHANGE ZERO will be displayed if the transmitter is not an RTD or thermocouple type and you should skip step 6 and go to step 7 Transmitter Display Mode Program Procedure continued 6 RTD or Thermocouple Inputs Only Press ENTER at the SELECT UNITS prompt and the display will indicate the current unit selection followed by the optional unit selections similar to that shown below each time NEXT is pressed to scroll through the selections selections will vary with the input type selected DEG F Set units to degrees Fahrenheit DEG R Set units to degrees Rankine DEG K Set units to degrees Kelvin DEG C Set units to degrees Celsius Press EN
34. hipment However it is recommended that the module and any accessories be visually inspected for evidence of mishandling prior to applying power CAUTION SENSITIVE ELECTRONIC DEVICES DO NOT SHIP OR STORE NEAR STRONG ELECTROSTATIC ELECTROMAGNETIC MAGNETIC OR RADIOACTIVE FIELDS This circuit utilizes static sensitive components and should only be handled at a static safe workstation INSTALLATION The transmitter module is encapsulated in a general purpose plastic enclosure Use an auxiliary enclosure to protect the unit in unfavorable environments or vulnerable locations or to maintain conformance to applicable safety standards Stay within the specified operating temperature range of the unit As shipped from the factory the unit is factory calibrated for all valid input ranges and has the default configuration shown in Table 2 below WARNING Applicable IEC Safety Standards may require that this device be mounted within an approved metal enclosure or sub system particularly for applications with voltages greater than or equal to 75VDC or 50VAC Table 2 155H Default Factory Configuration Shaded entries cannot be adjusted via the Display program Mode and require the use of the HockeyPuck Configuration Software to make adjustments Refer to the Transmitter Configuration Manual for complete definitions of these terms Series 155H HART Two Wire Transmitter User s Manual mV TC RTD Input Your application may
35. ibrated span bar graph and tag diagnostic and configuration information In Field Reprogrammability Support Display push buttons provide support for reconfiguring the transmitter without having to connect to a host computer via an interface adapter Fully Isolated The input and output circuits are isolated from each other for safety and increased noise immunity Automatic Self Calibration Increases accuracy over wide ambient variations and simplifies input module calibration Transmitter zero and full scale are non interlaced Flexible DC Millivolt Thermocouple or RTD Inputs Accepts either DC millivolt thermocouple or RTD input signals Linearization lead break detection and TC reference junction compensation are included e True 4 Wire Kelvin Measurement Improves performance of 4 wire RTD measurements e Wide Ambient Operation The unit is designed for reliable operation over a wide ambient temperature range Key 155H Features continued e Automatic Built In Self Diagnostics This transmitter automatically checks for zero span cold junction temperature open T C open or shorted RTD element and open RTD lead or other transmitter malfunction every 3 seconds Hardened For Harsh Environments The unit will operate reliably in harsh industrial environments and includes protection from RFI CRFI EMI ESD and EFT plus low radiated emissions per CE requirements e Convenient Mounting The integra
36. isplay agree with another external instrument at some critical measurement point However display trim operates as a zero shift shifting all the display readings by the same amount Do not confuse this with the linearizer function programmable via the HockeyPuck Configuration Software That is multiple point corrections of up to 22 points are possible using the HART Interface Adapter and Configuration Software to configure the built in linearizer function The Display Program Mode Trim Display function differs as it applies the same offset shift to all points Press ENTER at the TRIM DISPLY prompt and you will be allowed to enter a display offset value The first line above the TRIM and DISPLY prompt indicates the current display offset value This value is adjusted in the same manner as was done for Change Zero step 7 where the sign and each digit is modified in sequence until the desired offset is entered Note that this value is changed independent of the Zero Lower Range Value and Full Scale Upper Range Value without the use of calibrators or external sensor inputs and only affects the display The display will then alternately indicate PLUS or MINUS each time the NEXT button is pressed with the current offset value noted on the first line above PLUS or MINUS Press ENTER to select PLUS or MINUS as desired The display will now allow each digit of the display trim value to be changed in sequence beginning
37. mple if 0040 0 F is our zero value the transmitter display will sequence as follows 0040 0 F THOUSN 0040 0 F HUNDRD 0040 0 F TENS 0040 0 F ONES 0040 0 F TENTHS Series 155H HART Two Wire Transmitter User s Manual mV TC RTD Input Transmitter Display Mode Program Procedure continued 10 After the tenths digit has been changed as required pressing ENTER returns to the alternating display of the ZERO prompt The new zero value is indicated on the line above CHANGE and ZERO Press NEXT to proceed to the next menu selection and the CHANGE FULL SCALE prompt will be displayed Change Full Scale allows the full scale or 20mA output point of the input signal to be changed This is referred to as the Full Scale or Upper Range Value URV At the CHANGE FULL SCALE prompt the numerical sign and value selection is done the same as described in step 7 for zero and will not be repeated here Change the full scale value as required using step 7 as your guide Once the full scale changes have been completed and the ENTER button is pressed you will be returned to the CHANGE FULL SCALE prompt Press NEXT to proceed to the next menu selection and the SELECT SENSOR FAIL SAFE prompt is displayed This allows you to enable or disable fail safe indication as was demonstrated in Step 1 That is the display alternated the words FAIL SAFE
38. nsmitter User s Manual mV TC RTD Input FIELD CALIBRATION CONFIGURATION Optional ATW TLD Display Required The optional display includes a second line of display information plus two push buttons for configuring the module directly A display is ordered separately Model ATW TLD and allows adjustment to key transmitter calibration and configuration parameters in the field without having to connect to a host computer and interface adapter or hand held HART Configurator The display is inserted directly into the top of the transmitter and may be hot plugged into the transmitter without removing power A single display may be economically used for several transmitters to accomplish local measurement and diagnosis as well as in field reconfiguration The display includes two push buttons labeled NEXT and ENTER for configuring a transmitter In the following procedure note that these buttons are activated with a slow deliberate push to help prevent casual or inadvertent activation of program mode Within Display Program Mode press the NEXT button to answer No when required or press ENTER to answer Yes When more than 7 characters are required to complete a prompt message the module will alternately sequence through two or more screens to complete the message and will also use common abbreviations where appropriate Additionally some of the Display Program Mode functions may use both lines of the display with a num
39. nswer YES or NEXT to answer NO and skip to the next step After pressing ENTER the display will sequence through all valid input types starting with the current input type already set and in the order shown below Press NEXT to skip to the next input type and press ENTER when your desired input type is displayed Input type menu selection prompts are displayed as follows T C J Type J thermocouple T C K Type K thermocouple T C L Type L thermocouple T C N Type N thermocouple T C Type R thermocouple T C S Type S thermocouple T C T Type T thermocouple T C U Type U thermocouple T CSPEC Reserved for a special thermocouple type custom order required 2W OHMS Two wire resistance ohms 2W DINP 1000 Pt RTD DIN Curve alpha 0 00385 2W SAMP 1000 Pt RTD SAMA Curve SAMA RC21 4 98 130 at 0 alpha 0 003923 2W SPEC Reserved for a special 2 wire RTD input custom order required SW OHMS Three wire resistance ohms BW DINP 1000 Pt RTD DIN Curve alpha 0 00385 3W SAMP 1000 Pt RTD SAMA Curve SAMA RC21 4 98 130 at 0 C alpha 0 003923 BW SPEC Reserved for a special 3 wire RTD input custom order required 4W OHMS Four wire resistance connection ohms 4W DINP 1000 Pt RTD DIN Curve alpha 0 00385 4W SAMP 1000 Pt RTD SAMA Curve SAMA RC21 4 98 13Q at 0 C alpha 0 003923 4W SPEC Res
40. ond line includes seven alphanumeric characters for display of tag number information sensor and display fault messages plus configuration prompts and menu selections The display also includes an 11 segment bar graph indicator that displays input readings in percent of calibrated range plus two push buttons labeled NEXT and ENTER for in field transmitter reconfiguration in the absence of a HART communication device A single indicator configurator can be used for several transmitters as it can be easily hot plugged into or removed from the top of installed transmitters This offers an economical approach for allowing personnel to take local readings diagnose faults and make adjustments to transmitter configuration parameters on the fly Refer to Drawing 4501 765 for display dimensions and details Series 155H HART Two Wire Transmitter User s Manual mV TC RTD Input Explosion Proof Housing w Window amp Mounting Kit Model ATW XPW This aluminum enclosure is explosion proof and includes a clear window for viewing 155H or 151T transmitters equipped with the optional display It is a NEMA 4X IP66 68 housing and is CSA and FM approved for Class I Div 2 Groups B and D Class ll Div 2 Groups E F and G and Class Div 2 A mounting plate and Screws are pre installed for easy transmitter mounting within the enclosure An optional pipe mount bracket is also available for attaching this enclosure to common 2 inch pi
41. pe for improved mechanical stability see ATW PM2 below Refer to Drawing 4501 767 for dimensions and details of this enclosure Pipe Mounting Bracket For Housing Model ATW PM2 This stainless steel bracket allows ATW XPW enclosures to be mounted to 2 inch diameter horizontal or vertical pipe for improved mechanical stability Refer to Drawing 4501 768 to view details of this accessory Software Interface Package Model 155C SIP PC 155H Interface Adapter Configuration Software and Manual The 155H Transmitter is fully configurable via the PC 155H HART Interface Adapter and our user friendly Windows 95 98 NT HockeyPuck Configuration Software The interface adapter serves as an isolated interface converter between the EIA232 serial port of the host computer and the HART interface of the 155H module It is used in conjunction with the software to program and configure 155H transmitters via the two wire process loop This adapter requires no user adjustment no external power and operates transparent to the user It receives its power from the RS232 interface The adapter has a DB9S connector that mates to the common DBS9P serial port connector of a host computer The adapter also has two non polarized test clips at the end of 6 feet of cable for direct parallel connection to the process loop The configuration software is supplied on CDROM and requires 40MB of free hard drive space to install All transmitter functions are programma
42. rately 6 Output Two Wire Current 0 Enclosure 0 Standard Surface Mount 0 Approvals CE FM amp CSA CSA amp FM rated for non incendive hazardous location applications in Class Div 2 Groups A B C amp D Class II Div 2 Groups F amp G and Class Ill Div 2 Series 155H HART Two Wire Transmitter User s Manual mV TC RTD Input INPUT SPECIFICATIONS The unit must be wired and configured for the intended input type and range see Installation Section for details See Table 4A and 4B for supported input types and ranges RTD User configurable for one of five RTD types noted in Table 4A Module provides sensor excitation linearization lead wire compensation and sensor fail safe break detection Input Configuration Two three or four wire Excitation Current 0 3mA DC nominal all types Input Impedance 1MQ RTD and Resistance inputs Lead Wire Compensation Inherent for 3 wire and 4 wire RTD s All lead wires must be of equal size and length Maximum Lead Resistance 500 any lead Minimum Input Span 10 C for all types except copper 100 C for Cu RTD Table 4A RTD Types Ranges and Input Accuracy Pt 100Q DIN curve 0 0 00385 Pt 1000 SAMA curve 0 0 003923 Ni 1200 328 1562 F 0 25 F 328 1202 F 25 F 80 to 320 C 0 14 C 112 to 608 F 25 F 76 to 482 F 0 25 F 94 to 302 F 0 25 F 0 5000 Notes Table 4A 1 Alph
43. rator to configure the module can be found in the Model 275 Transmitter Configuration Manual 8500 613 Additional information and literature regarding the HART amp communication protocol can be found by accessing the HART Communication Foundation web site at http Awww hartcomm org 5 0 SERVICE AND REPAIR CAUTION Risk of Electric Shock More than one disconnect Switch may be required to de energize the equipment before servicing SERVICE AND REPAIR ASSISTANCE There are no user serviceable components inside this transmitter and any attempts to open the enclosure will void the warranty This module requires no maintenance except for periodic cleaning and transmitter configuration parameter zero full scale etc verification 10 A non functioning module may be returned to Acromag for inspection or replacement Acromag has automated test and diagnostic equipment that thoroughly checks and calibrates the performance of a module Please refer to Acromag s Service Policy Bulletin or contact Acromag for complete details on how to obtain replacement or repair PRELIMINARY SERVICE PROCEDURE Before beginning repair be sure that all installation and configuration procedures have been followed Reconfiguring a failed module will sometimes restore operation If diagnostics continue to indicate a problem or if other evidence points to a problem with the unit an effective and convenient fault diagnosis method is to exchange
44. rding the HockeyPuck Configuration Software and PC 155H HART Interface Adapter can be found in Transmitter Configuration Manual 8500 612 Information on configuration of this transmitter using the after market Model 275 Hand Held HART Configurator can be found in the Model 275 Transmitter Configuration Manual 8500 613 Additional information and literature regarding the HART communication protocol can be found by accessing the HART Communication Foundation web site at http Awww hartcomm org Note that Acromag also offers this transmitter without HART support Refer to Acromag Model 151T Transmitters for more information DESCRIPTION Series 155H Two Wire Transmitters are members of the popular Acromag transmitter isolator and alarm family These compact puck style transmitters will condition a DC voltage thermocouple or RTD input and provide an isolated 4 20mA process current output signal for two wire process loops The 155H models are programmable via the industry standard HART protocol and our user friendly Windows 95 98 or NT HockeyPuck Configuration Software or via the push buttons of the optional ATW TLD display Each module provides a single input for either DC millivolts thermocouple or RTD signals RTD sensor excitation linearization lead wire compensation and lead break detection are included Thermocouple reference junction compensation linearization and open circuit or TC break detection is also provided
45. ress ENTER at the RETURN TO OPERATE MODE prompt and the transmitter will return to the normal operating mode Configuration is now complete If you press NEXT instead then you will re enter the Display Program Mode and the configuration process will be repeated In operating mode the second line of the display will indicate the tag number normal operation or the fault indications FAIL SAFE broken sensor lead or open sensor or DFAULT a display fault has occurred due to ambient temperatures exceeding the temperature rating of the display A bar graph also indicates signal measurement in percent of calibrated span Note that in Display Program Mode if no buttons are pushed for 2 5 minutes then the transmitter will automatically return to the operate mode You can also return to operating mode at any point in Display Program Mode by removing power to the transmitter for about 10 seconds then reapplying power Series 155H HART Two Wire Transmitter User s Manual mV TC RTD Input 4 0 IHEORY OF OPERATION Refer to Simplified Schematic 4501 762 to gain a better understanding of the circuit Note that these transmitters will accept a thermocouple an RTD sensor or a voltage input and condition it to a voltage signal for A D conversion A multiplexer is used to drive the A D converter stage The A D converter applies appropriate gain to the signal performs analog to digital conversion and filters the signal The digi
46. s Shipping Weight 1 pound 0 45 Kg packed APPROVALS xxx0 0 Agency Approvals CE CSA amp FM approvals apply This product is CSA amp FM rated for nonincendive hazardous location applications in Class I Div 2 Groups A B C amp D Class Il Div 2 Groups F amp G and Class Ill Div 2 ENVIRONMENTAL SPECIFICATIONS Operating Temperature 40 C to 85 C 40 F to 185 F without display installed 20 C to 70 C 4 F to 158 F with optional ATW TLD display installed Storage Temperature 40 C to 85 C 40 F to 185 F Relative Humidity 5 to 100 operating 0 100 non condensing storage Power Requirements An external loop power supply is required Terminal voltage is 12V DC minimum to 42V DC maximum Reverse polarity protection is included Maximum allowable ripple is 0 2Vp p 47 125Hz Maximum noise is 0 6mV rms 13 Power Supply Effect Less than 0 005 of output span change per volt DC for rated power supply variations Isolation The input circuit is electrically isolated from the output power circuit for common mode voltages up to 250VAC or 354V DC off DC power ground on a continuous basis Vibration Effect 2g s maximum from 0 to 500Hz on any axis Radiated Emissions EMC Meets or exceeds requirements of European Norm EN55011 1991 Group 1 for Class A equipment Electrostatic Discharge ESD Immunity Complies with IEC1000 4 2 Level 3 8KV 4KV air direct discharge Ra
47. s include up to 0 5 C 0 9 F of cold junction compensation error Accuracy includes the effects of repeatability hysteresis non linearity ambient temperature and humidity effects reference junction error TC inputs A D conversion error D A output error and supply voltage effects under non condensing conditions and vibration up to 2g s at up to 500Hz Accuracy does not include sensor error Ambient Temperature Effect Self correcting over the full operating temperature range for temperature changes up to 20 C Hour Error is less than half the reference accuracy plus 0 1 C per 28 C 50 F change Ranging Zero and span are non interactive Series 155H HART Two Wire Transmitter User s Manual mV TC RTD Input Repeatability To one half of the transmitter accuracy Long Term Stability Deviation is less than 0 025 of the output span per year plus 0 05 of the input reading Interchangeability Units are fully interchangeable without field calibration Linearization TC amp RTD linearization to 0 05 C Custom linearization for up to 22 break points is possible for units programmed via the Interface Adapter and HockeyPuck Configuration Software Sensor Break Detection Sensor break or open circuit failure can be configured for failsafe detection with upscale 23mA downscale 3 6mA or no output response Alternately a user defined failsafe level may be programmed via the HockeyPuck Configuration Software
48. smitter Display Mode Program Procedure 1 Connect the transmitter to an appropriate power supply and load and apply power Refer to Electrical Connections Drawing 4501 764 No input signal source is required If you are going to be trimming zero and full scale output limit values you will also need to connect a precise current milliampmeter in series with the load or a voltmeter across a precision output load resistance in order to precisely read the output signal of the transmitter A transmitter with the standard default factory configuration and no sensor connected to the input will alternately display the message FAIL SAFE on the second line of the display since no sensor is connected to the input and fail safe indication is enabled by default Further the bar graph of the display will indicate an upscale output measurement greater than 100 about 23mA as this is the default failsafe reporting mechanism configured 2 Press the NEXT button and the display will ask if you wish to return to Operating Mode by alternately displaying the following words RETURN TO OPERATE MODE 3 Answer NO by pressing the NEXT button a second time and you will enter the Display Program Mode and the SELECT INPUT prompt will be displayed Series 155H HART Two Wire Transmitter User s Manual mV TC RTD Input Transmitter Display Mode Program Procedure continued 4 At the SELECT INPUT prompt press ENTER to a
49. ted surface mount or optional DIN rail mount make module installation fast and easy The compact size of this transmitter and optional display permit installation in very tight spaces e Built In Linearizer Function The input signal can be optionally linearized with up to 22 break points defined Flexible Filtering Three user programmable input filter modes can be applied to help increase noise immunity Input Line Frequency and Filter Smart Smoothing and Validation Time Output damping may also be configured These parameters require the HockeyPuck Configuration Software to select ACCESSORY ITEMS The following accessories are available from Acromag Acromag also offers other standard and custom transmitter isolator and alarm types to serve a wide range of applications please consult the factory DIN Rail Mounting Kit Model ATW DIN This kit contains a back plate with DIN rail clips installed for convenient T Type DIN rail mounting of Model 155H and 151T transmitters The backplate is threaded for attachment to the module via the captive mounting screws of the transmitter s enclosure Refer to Drawing 4501 766 to view this item LCD Display amp Field Configurator Model ATW TLD This is a 4 1 2 digit plug in Liquid Crystal Display for Model 155H and 151T Transmitters The first line of the display includes six digits plus a polarity sign for sensor measurement indication in C F R and K units The sec
50. the questionable module with a known good unit Acromag s Application Engineers can provide further technical assistance if required When needed complete repair services are available from Acromag 6 0 SPECIFICATIONS General The Model 155H 0600 is a two wire HART compatible transmitter which conditions either a single thermocouple RTD millivolt or resistance input and provides an isolated 4 20mA process current output The standard unit includes captive mounting screws for surface mount applications and other mounting options are available including DIN rail The unit is configured and calibrated with our user friendly Window 95 98 NT HockeyPuck Configuration Software and PC 155H HART Interface Adapter Alternately when equipped with the optional display the module may be reconfigured via push buttons on the display Non volatile reprogrammable memory in the module stores calibration and configuration information MODEL NUMBER DEFINITION Transmitters are color coded with a white label The prefix 15 denotes the Series 1500 while the H suffix specifies that this device is primarily a HART compatible process transmitter 155H Transmits and isolates a single DC millivoltage Thermocouple TC or Resistance Temperature Detector RTD for two wire process loops including HART support 0600 The four digits of this model suffix represent the following options respectively 0 Without Display Display Ordered Sepa
51. tized A D signal is then transmitted serially to an optically isolated microcontroller The microcontroller completes the transfer function according to the configuration and sends a corresponding output signal to a Digital to Analog Converter DAC The DAC then updates its current output in response The embedded configuration and calibration parameters are stored in non volatile memory within the module About HART Model 155H transmitters are programmable via the HART communication protocol using the same two wire interface as the output and power HART is an acronym for Highway Addressable Remote Transducer It is a convenient method of transmitting and receiving digital data along the analog 4 20mA process loop The HART communication protocol operates using a frequency shift keying method based on the Bell 202 communication standard That is HART uses two frequencies of a sine wave super imposed on the DC signal cables of the process loop to represent a set and clear bit A 0 bit is represented by a 1200Hz sine wave and a 1 bit uses a 2400Hz sine wave Because the average DC value of a sine wave is zero the 4 20mA DC signal is not affected The amplitude of the sine wave is approximately equivalent to 0 5mA Information regarding the HockeyPuck Configuration Software and PC 155H HART Interface Adapter can be found in Transmitter Configuration Manual 8500 612 Information on using the after market Model 275 hand held HART Configu
52. tware Interface 4 2 0 PREPARATION FOR USE 4 UNPACKING AND INSPECTION 4 INSTALLATION 2 euet te odds 4 Mounting x iore ee 5 Electrical Connections 5 3 0 MODULE CONFIGURATION 5 FIELD CALIBRATION CONFIGURATION 6 General Display Mode Program Procedure 6 4 0 THEORY OF OPERATION 10 5 0 SERVICE AND REPAIR 10 SERVICE AND REPAIR ASSISTANCE 10 PRELIMINARY SERVICE PROCEDURE 10 6 0 SPECIFICATIONS 10 MODEL NUMBER DEFINITION oe 10 INPUT SPECIFICATIONS 11 OUTPUT SPECIFICATIONS ve 12 ENCLOSURE PHYSICAL SPECIFICATIONS 13 APPROVALS nye 13 ENVIRONMENTAL SPECIFICATIONS ee 13 CONFIGURATION C eset teen e 13 ACCESSORIES aia e nte end 13 List of Drawings Page 155H Simplified Schematic 4501 762 15 155H Computer to Module Connections 4501 763 16 155H Electrical Connections 4501 764 Figure A 17 155H Electrical Connections 4501 764 Figure B 18 ATW TLD Display Dimensions 4501 765 19 155H Enclosure Dimensions 4501 766 20 ATW XP

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