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4600 MB Gas Transmitter Operation & Maintenance

1. COLOR CODE OF CABLE SUPPLIED BY SCOTT INSTRUMENTS PRIOR TO JUNE 2001 w z Woe 82 28 2 H u lt 2 9828133 m a e oO Oz 3 a TO TRANSMITTER w w E H ERE 3 x gx S Dn Oon o 6 2 So s 22 EFEEEH B26 ZE IZ SS 3 265605 TO TRANSMITTER TRANSMITTER JUNCTION BOX LL FROM SENSOR 314 SCREW IN CONDUIT FITTING na SUPPLIED BY CUSTOMER SZS4235L 3 POWER SUPPLY 2522057 BOARD LOWER ae 2502 ro gt i x le E Liens 3 4 SCREW IN CONDUIT FITTING SEALS ARE REQUIRED TO BE INSTALLED WITHIN 18 457mm ON ANY CONDUIT ENTERING AN ENCLOSURE WHEN TWO ENCLOSURES ARE CONNECTED BY A RUN NOT OVER 3 FEET 0 9 METRES LONG A SINGLE SEAL LOCATED AT THE CENTER OF THE RUN IS CONSIDERED SATISFACTORY ONLY EXPLOSION PROOF UNIONS COUPLINGS ELBOWS AND CONDUIT BODIES SIMILAR TO L T AND CROSS TYPE SHALL BE PERMITTED BETWEEN THE SEALING FITTING AND THE ENCLOSURE ALL INSTRUMENTS ARE TO BE INSTALLED IN ACCORDANCE WITH LOCAL REQUIREMENTS SUPPLIED BY CUSTOMER SCOTT INSTRUMENTS SUPPLIED SHIELDED CABLE SPECIFY CABLE LENGTH WHEN ORDERING 50 FT 15 2 METRES MAXIMUM PIN WIRE COLOR SIGNAL 1 WHITE BLUE 5VDC 2 WHITE GREEN VIN 3 WHITE BROWN VTEMP 4 WHITE ORANGE SELF TEST 5 G
2. Navigating the Instrument 24 RUN Mode 24 How to Adjust Transmitter Parameters 24 Acknowledging Latched Alarms 25 Inhibiting Output 25 Calibration Frequency 26 Remote Sensor Calibration 27 Storing Sensors 28 Zero Calibration 28 Span Calibration 29 Important Notes of Calibration of Sensors 31 Weekly Operational Response Checks 33 Adjusting the Loop Output Parameters 33 Optional Alarm Relays 34 Relay N O N C Status 36 Transmitter Security 37 Toggling Parameter Security On Off LK ON 37 Changing the Password LK PW 37 Auto Lock Timer LK tM 37 Instrument Parameter Change Example 38 Sensor Self Test Option 39 Serial Communications Overview 42 Setting Up for Serial Communications 42 Modbus RTU Protocol 44 Report Generation 49 Manual 087 0014D 4 2008 i Model 4600 Gas PLUS MB Transmitter SCOIT HEALTH amp SAFETY Parameter Reference Menus 52 The USER Menu 53 Alarm Relay Parameters 53 Sensor Parameters 55 The LOCK Menu 56 The COMM Menu 57 Loop Current Parameters 57 Report Generator Parameters 58 Serial Communication Parameters 60 The FACT Menu 62 Troubleshooting 65 Technical Specifications 66 Contacting SCOTT HEALTH amp SAFETY 66 APPENDIX 1 Modbus Registers Addressing 66 APPENDIX 2 FSR Command Functions 71 APPENDIX 3 Modbus Register Table 75 Record Your Parameters 78 Warranty 79 Statement of Year 2000 Compliance 79 Spare Parts 80 In
3. T Tagging Data Elements configuring 45 Technical Specifications 66 Temperature 7 Temperature Units sensor 55 Termination characters 58 Termination string 58 Transmitter Installation 10 Accessibility 7 Ambient Temperature 7 bold sunlight 7 Conduit 7 electromagnetic fields 7 Gas Density 7 Gas Sources 7 Orientation 7 Transmitter Security 36 Transmitter Status Register 67 Type gas SeeSensor Parameters U UL requirements compliance 8 UP key 24 USER Menu 53 V Vapor Density See Gas Density Vibration 7 W Warranty 79 Water 7 Wire size 8 Wiring 7 X no entries Y Year 2000 Compliance 79 Z Zero calibration 28 Freguency 26 Manual 087 0014D 4 2008 87 Model 4600 Gas PLUS MB Transmitter SCHIT HEALTH amp SAFETY 88 Manual 087 0014D 4 2008
4. Figure 4G Connection to Model 6800 EMI RFI ALERT When installing ransmitters equipped with internal relays all power lines should be shielded The best practice is to run relay power wiring in separate conduit from DC power wiring and away from other 110VAC power lines or sources of EMI RFI such as variable speed drive controls 115 VAC Power Supply Board Lower Shown w display and CPU Boards removed C Common Contact NEUTRAL GREEN LAMP TYPICAL WIRING HORN SOUNDS ON HIGH ALARM RED LAMP LIGHTS ON LOW ALARM RELAYS CAN BE EITHER NORMALLY OPEN OR NORMALLY CLOSED BUT ARE CONFIGURED AT FACTORY PRIOR TO SHIPMENT GREEN LAMP LIT UNDER NORMAL CONDITIONS OFF DURING FAULT OR POWER FAILURE AND PREVENTS FALSE ALARMS TRANSMITTER KEEPS FAULT RELAY ENERGIZED UNDER NORMAL CONDITIONS NOTE Normally open normally closed status assumes the concentration relays are programmed as non failsafe and the fail relay as fail safe Figure 5 Alarm Wiring Manual 087 0014D 4 2008 15 Model 4600 Gas PLUS MB Transmitter SCOTT HEALTH amp SAFETY 765 43 2 1 i DA Sc A Lett teen TB1 SOOOBOOSD GES 24V 2 POWERISIGNAL COMMON 5 A 6 B 7 NO CONNECTION 470 OHM 1 2W RESISTOR REQUIRED IF CURRENT LOOP IS NOT CONNECTED TO EXTERNAL
5. The sensor should always be facing downward Sensors manufactured after October 2001 S N 1001 XXXX may also be mounted horizontally Sensors should never point at any angle 20 HEALTH amp SAFETY e 1AM UI MT a LEAF din 118191 uf In MAF a A Sensor Housing Tse Vun Rubber O Ring wi SE Past Elogtomztic Gonmochen mn grey An LI aide wally ep ep 1PRSMSAPARA TIP er es BO pak ps balir Vu sia dn albania Wal At dk Kuwait SCHOF Threaded End Cap Note Transmitters are supplied with a turn Twist and Lock End cap See 1 4 Turn Calibration Accessories under Spare Parts Figure 10 Installing The GasPlus Sensor Sensor Installation Figure 10 depicts the 4600 GasPlus sensor installation Be sure to include the elastomeric connection pad when installing the sensor into the sensor housing Rotate the sensor until it locks into the alignment pin The gas name range will be visible through the housing front To ensure proper connection between the sensor and the sensor housing tighten the threaded sensor end cap hand tight do not over tighten as this could damage the elastomeric connector or the sensor housing Manual 087 0014D 4 2008 SCOTT HEALTH amp SAFETY Model 4600 Gas PLUS MB Transmitter Twist and Lock Accessories Designed for guick easy installation and removal from your 4600 GasPlus MB Transmitter Twist and Lock accessories connect directly to the standard
6. Adjusts transmitter 4 20 mA out serial communications and report generator parameters Current Loop MA 04 MA 20 MA SF MA F MA I MA t Report Generator RP ON RP Pd RP d1 thru RP d5 RP E1 thru RP E5 RP F1 thru RP F8 Real Time Clock Rt dt Rt YR Rt tM Serial Comm SC Ad SC Md SC bd SC OP SC dL SC P SC ld SC RS Factory Functions Used by factory for diagnostics and adjustments F PWd F tMR F CAL F HtC F RES F MNt F ZMV F SCF F SMV F tCF F LSd F LSt F SGC F SP2 F StC F MFG F tYP F SSN F RNG F 096 F dPG F CS1 F GCU F CS2 F SP1 F CS3 F LbF F LCd SW 1d SCOTT HEALTH amp SAFETY DER d W Help Functions A scrolling help message appears for each parameter in all menus Manual 087 0014D 4 2008 COTTI Model 4600 Gas PLUS MB Transmitter HEALTH amp SAFETY The USER Menu Adjusts alarm setpoints relay operation and various sensor parameters such as gas type and display engineering units Displayed om E Default As Description Max Value USER MENU Alarm Relay Parameters Alarm 1 Set Point At this concentration the unit will turn on the AL1 display indicator and activate the associated alarm relay Value must be equal or higher than A1 RP for rising alarm value must be lower than A1 RP for oxygen falling alarm Sensor Dependent Alarm 1 Reset Point At this concentration the unit will turn off the AL1 display indica
7. terminal and then out of the receiver s terminal to the power supply negative common Current sinking mode When the transmitter is wired in the current sinking mode the positive supply voltage is connected to the receiver s terminal Note that this may be the same supply powering the instrument or a different one see Isolated and Non Isolated Loop Power Current flows through the receiver and out of the terminal to the transmitter s mA terminal TB1 3 Controlled by the virtual resistance of the instrument current flows out of the transmitter s mA terminal TB1 4 to the supply negative common Isolated and Non Isolated Loop Power When the current loop power supply is different than the one used to power the transmitter the loop is isolated When the same power supply is used for both the current supply and the instrument the loop is non isolated Many PLCs require an isolated loop The transmitter can be wired with either isolated or non isolated power Note from Figures 4B D that isolated power requires 4 wires whereas non isolated power can use a 3 wire configuration Powering The Transmitter When power is applied to the transmitter all segments and indicators on the display will turn on for 2 seconds then will turn off for 2 seconds The transmitter will subsequently enter a 30 second warmup period countdown shown on the display Manual 087 0014D 4 2008 Model 4600 Gas PLUS MB Transmi
8. 0003 0010 Boron Trichloride BCI Order HCI sensor Bromine Br Model 61 8 Digit Prefix Suffix 096 1949 XXXX 0001 0003 0005 0010 lt 0015 0025 0030 0050 0100 Carbon Monoxide CO Model 82 8 Digit Prefix Suffix 096 1962 XXXX 0050 0100 0150 0200 0250 0300 0500 1000 Chlorine Oxidant CI Model 520X 8 Digit Prefix Suffix Chlorine CL Model 52 Standard RH 8 Digit Prefix Suffix 096 1945 0001 0003 0005 0010 0015 0025 0030 0050 0100 0200 Chlorine CL Low Humidity lt 35 Model 56 XXXX Spare Parts SCOTT HEALTH amp SAFETY Call 800 247 7257 or Your Local Sales Representative Fluorine F Model 62 8 Digit Prefix Suffix 096 1950 XXXX 0001 0003 0005 0010 0015 0025 0030 0050 0100 Germane GeH Model 69 8 Digit Prefix Suffix Hydrogen Cyanide HCN Model 64 8 Digit Prefix Suffix 096 1952 XXXX 0010 0025 0030 0050 0100 Hydrogen Fluoride HF Lo RH lt 75 Model 63 8 Digit Prefix Suffix 096 1951 XXXX 0010 0015 0025 096 1957 1000 PPB XXXX 1000 8 Digit Prefix Suffix 096 2257 096 2003 XXXX 0001 0003 0005 0010 0015 0025 0030 0050 0100 0200 Chlorine Dioxide CIO Model 53 8 Digit Prefix Suffix 096 1946 0001 0003 0005 0010 0015 0025 0030 0050 0
9. EEE Pi LIA PIRA lt lt N x KA PRI x lt L Kai RS 0 S RS Pex Ss N 2 N lt lt gt RR 2 d d gd d d gd sd d Se ee RSS KS Se LS N ath SERIES 4600MB Se x Se e lt gt gt RL See lt st 2 a e kt lt I d RR xx x pa S er S ge NNN gees NNN BER See UNIVERSAL GAS TRANSMITTER GAS o gt G gt E O Bann 5 2 Im i og QE 0 VS KEE IA a yi gt o 3 2 ab Q O 4600MB D 4 11 08 129032 Part 087 0014 Rev Date ECN COTT Model 4600 Gas PLUS MB Transmitter HEALTH amp SAFETY Contents General Instrument Overview Map 1 Introduction SCOTT HEALTH amp SAFETY Gas Sensor Overview of Sensor Operation The Sensor and Battery Gas Specificity Sensor Accuracy Sensor Response Times Sensor Life Environmental Influences to the Sensor Sensor Oxygen Requirements Sensor Intrinsic Safety Sensor Handling and Disposal Installation Location Considerations 7 Physical Installation and Wiring 7 Remote Sensor Junction Box Mounting 8 Powering the Transmitter 9 2 2 OO OO EES E WU to Sensor Installation Twist and Lock Accessories Transmitter Operation
10. Record Your Parameters Con t NOTES Parameter L atameten Labe Transmitter n n N 09 5 lt Pa Manual 087 0014D 4 2008 SCOTT Model 4600 Gas PLUS MB Transmitter HEALTH amp SAFETY Warranty The manufacturer Scott Health amp Safety warrants to the original purchaser and or ultimate customer of the manufacturer s products that if any part s thereof except for those listed below proves to be defective in material or workmanship within 18 months from the date of shipment or 12 months from the date of start up whichever comes first Such defective part s will be repaired or replaced free of charge if shipped prepaid to the factory in a package equal to or original container All products will be returned freight prepaid to user when determined by the manufacturer that the part s failed due to defective materials or workmanship The seller assumes no liability for consequential damages of any kind and the buyer by acceptance of this equipment will assume all liability for the consequences of its use or misuse by the buyer its employees or others A defect within the meaning of this warranty in any part of any piece of equipment shall not when such part is capable of being renewed repaired or replaced operate to condemn such piece of equipment This warranty does not cover consumable items batteries or wear items subject to periodic replacement This warranty is in lieu of all other warra
11. 5 Tx A 6 Rx B S Re 7 Not Used Sp W NOTE TERMINAL 2 OF TB1 IS CONNECTED TO EARTH GROUND THROUGH THE san TRANSMITTER HOUSING fa Figure 4 4 20 Current Loop Connections Manual 087 0014D 4 2008 11 Model 4600 Gas PLUS MB Transmitter Current Source with Non Isolated Loop Power N 0 gt SWITCH Place in the OFF position before removing Display CPU board stack Ensure power switch is in the OFF position prior to replacing board stack PLC DCS TB1 SCOTT HEALTH amp SAFETY 543 Fe E pe Sa E I PA KON KS EON SEN AN AN KON NY DY OV SS RY OY GY EARTH GROUND 24V P S EARTH GROUND Figure 4A Alternate 4 20 mA Current Loop Connections Current Source with Isolated Loop Power N If gt SWITCH Place in the OFF position before removing Display CPU board stack Ensure power switch is in the OFF position prior to replacing board stack 12 PLC DCS TB1 IRC RE REES KATEN RAN AN AN AN AN N KO WY WY DY DY OV RY VY EARTH GROUND 24V P S lt E ee 24V EARTH GROUND EARTH GROUND Figure 4B 4 20 mA Current Loop Connections Manual 087 0014D 4 2008 SCOTT Model 4600 Gas PLUS
12. Introduction The 4600 GasPlus MB is a 24 VDC powered toxic gas transmitter and a microprocessor controlled 4 20 mA device It allows any of the Series 4600 toxic gas smart sensors excluding the Model 88 combustible sensor to be used for the detection of a specific target gas When properly installed non intrusive operation of the transmitter and an intrinsically safe sensor permit the 4600 GasPlus MB to be operated and calibrated within potentially explosive environments without having to declassify such areas The 4600 GasPlus MB has been designed to provide many useful features required for such a device in today s industrial applications e Coated internal circuitry for protection against moisture and corrosion Three internal alarm relays option Selectable calibration inhibit levels Self diagnostics e Modbus RTU protocol Scott Health amp Safety Gas Sensor Overview of Sensor Operation Electrochemical gas sensors detect target gasses for which they were designed through a series of electrochemical reactions Gas passes through a gas permeable membrane where it then contacts an electrolyte saturated membrane The gas is then oxidized or reduced depending on the gas at the sensing electrode and the reaction is balanced at the counter electrode In most sensors a third electrode acts as a reference to maintain a fixed potential at the sensing electrode As gas concentration increases a corresponding increase i
13. 0001 0003 0003 K 0003 0003 0005 0005 SR 0005 0005 0010 0010 En 0010 0010 0015 0015 Ye 0015 0015 0020 0020 oi 0020 0020 0025 0025 0025 0025 0030 0030 0030 0030 R S Chlorine CL R S Hydrogen Bromide R S Hydrogen Fluoride HF R S Sulfur Dioxide SO Model 22 HBr Low Humidity Low Humidity Low Humidity Low Humidity Model 94 Model 90 Model 96 8 Digit Prefix Suffix 8 Digit Prefix Suffix 8 Digit Prefix Suffix 8 Digit Prefix Suffix 096 2247 XXXX 096 2334 XXXX 096 2330 XXXX 096 2336 XXXX 0001 0001 0001 0001 0003 0003 0003 0003 0005 0005 id 0005 0005 0010 0010 ER 0010 0010 0015 0015 0015 0015 0020 0020 0020 0020 0025 0025 0025 0025 0030 0030 0030 0030 R S Chlorine CL R S Hydrogen Bromide R S Hydrogen Fluoride HF R S Sulfur Dioxide SO Model 24 HBr High Humidity High Humidity High Humidity High Humidity Model 95 Model 91 Model 97 8 Digit Prefix Suffix 8 Digit Prefix Suffix 8 Digit Prefix Suffix 8 Digit Prefix Suffix 096 2295 XXXX 096 2335 XXXX 096 2331 XXXX 096 2337 XXXX 0001 0001 0001 0001 0003 0003 N 0003 0003 0005 0005 EN 0005 0005 0010 0010 du 0010 0010 0015 0015 0015 0015 0020 0020 0020 0020 0025 0025 bs 0025 0025 0030 0030 0030 0030 82 Manual 087 0014D 4 2008 SCOTT Model 4600 Gas
14. 0014D 4 2008 SCOTT Model 4600 Gas PLUS MB Transmitter HEALTH amp SAFETY STEP 6 After the delivery tube and adapter have equilibrated with the gas attach the adapter to the 4600 sensor end cap remove the rain shield first if there is one STEP 7 Continue the gas flow and after five minutes adjust the span to agree with cylinder label value STEP 8 Shut off the gas remove the calibration adapter from the end cap and reinstall the rain shield if there is one Note Sometimes regulators require time to adjust after changing from one gas type to another For example a regulator that has been on an H S cylinder will have absorbed H S especially when it is brass The sulfided interior will destroy gasses such as Cl until enough time and gas have passed to clean out the regulator In extreme cases it will probably be better to use a new regulator and then reserve it exclusively for use with the particular gas i e chlorine Weekly Operational Response Checks A sensor response test should be performed weekly to ensure the transmitter continues to respond to the target gas It is recommended to briefly expose the transmitter to a dose of the calibration gas used to span the instrument A 5 to 10 second gas stream directed at the base of the sensor should suffice in producing a response from the transmitter If response is slow typical response time will be within 5 seconds check the tip of the sensor for eithe
15. Address Description Suggested Tag 40001 0000 Function Select Register FSR 0001 Parameter Select Register PSR 40003 40006 0002 0005 Character Data Registers CDR1 CDR4 0006 0009 Integer Data Registers IDR1 IDR4 40019 40020 0018 0019 Gas Concentration Decimal Point GAS GAS DP 40021 40022 0020 0021 Temperature Decimal Point TMP TMP_DP 40023 0022 Transmitter Status STS 0023 General Fault Status GFS 40025 0024 Sensor Fault Status SFS 40026 0025 Transmitter Type 4600 TYP A complete list of parameters can be found in the Parameter Reference section of this manual Accessing Transmitter Data The transmitter stores volatile information such as computed concentration temperature and alarm status in RAM Configuration parameters such as alarm set points and current loop settings are stored in nonvolatile EEPROM There are no restrictions on reading any transmitter variable or parameter providing you know the register number and data type However this is not the case for configuration parameters Since the nonvolatile memory is checked before each series of calculations a special procedure must be used to change configuration parameters Important Do not write directly to the address of a parameter Doing so will result in a memory checksum fault Changing Configuration Parameters To change a configuration parameter value you must have 1 more piece of information the parameter number Parameter numb
16. CASE ELSE PRINT SP2 Decimal Point Error END SELECT Manual 087 0014D 4 2008 47 Model 4600 Gas PLUS MB Transmitter SCOTT HEALTH amp SAFETY How to Change the Alarm 2 Set Point Since parameter memory is continuously tested for integrity parameter values may NOT be written directly to parameter read addresses Doing so will cause a checksum fault on the very next scan In addition writing a parameter value directly into memory provides no range of error checking as provided when using the display and switches at the operator interface This level of integrity checking requires the parameter access registers On the 4600 GasPlus MB these registers are 40001 through 40010 Register Address Description Input Range 40001 Function Select Register FSR See Appendix 2 0 100 see Parameter Reference Guide 40003 40006 Character Data Registers CRD1 CRD4 128 to 127 40007 40010 Integer Data Registers IDR1 IDR4 32768 to 32767 In our example you will only need to change the numeric value contained in Register 40283 This is accomplished in 3 steps that appear in the following sequence STEP 1 Since the data we are attempting to update is an integer we start by writing the new alarm value into IDR1 40007 However you must always take care to compensate the new value for the decimal point In our example the 10 PPM chlorine sensor forces the alarm set reset decimal points to 1 1 decimal digit Therefore the valu
17. Calibration of Sensors Calibration of 0 1000 PPM Methyl lodide Sensor CH l Please note that as of March 30 1999 Scott Health amp Safety has released a new high range CH sensor There is an important calibration method that MUST be adhered to when calibrating this sensor Upon multiple exposures to high concentrations of gas gt 500 PPM it begins to show increased sensitivity for a duration of approximately 5 days In other words it provides a higher output when exposed to the same concentration of gas The increased sensitivity varies from sensor to sensor but is typically on the order of 30 After 5 days the sensor once again shows the same sensitivity as that seen prior to the high gas exposure This increased sensitivity does not occur for exposure concentrations less than or equal to 200 PPM Therefore 3 recommendations are being made 1 The 0 1000 PPM range sensor should not be calibrated any more frequently than once per week 2 The sensor should be calibrated with actual methyl iodide with a concentration of less than 500 PPM 3 If the sensor is exposed to a high concentration of gas it should be allowed a recovery period of 7 days before recalibration Alternatively it is suggested that a spare GasPlus sensor be kept to swap out any sensor exposed to concentrations greater than 500 PPM This will allow the exposed sensor time to recover Keep in mind that exposure concentrations greater than 500 PPM methyl iodid
18. Contacts rated at maximum of 5A 250 VAC or 30 VDC resistive load Contacts rated at maximum of 2A 250 VAC or 30 VDC inductive load LCD 4 digits with decimal point 999 9999 PPM PPB V V C F AL1 AL2 FAULT INHIBIT MAINT and LOCK 4 total UP DOWN S ENT Span Enter Z ESC Zero Escape Modbus RTU protocol and configurable ASCII report generator Missing sensor current loop open broken electronic faults configuration memory faults 40 C to 65 C transmitter only does not apply to sensor 99 RH maximum non condensing limited by transmitter LCD electronic circuit boards protected by conformal coating 5 Ibs 2 25 Kg May be remoted up to 50 feet from transmitter optional CSA Certificate 1150551 Class I Zone 1 Group IIC Ex d ib ib IIC T6 Nine months unpowered 1 Year 1 Year Contacting SCOTT HEALTH amp SAFETY 4320 Goldmine Road Monroe NC 28110 Scott Health amp Safety may be contacted Monday through Friday 8 30 AM to 5 00 PM EST Phone 800 247 7257 FAX 1 704 291 8340 e mail e service scotthealthsafety com Manual 087 0014D 4 2008 SCOTT HEALTH amp SAFETY Model 4600 Gas PLUS MB Transmitter Appendix 1 MODBUS Register Addressing Register Address Description Suggested Tag 40001 40002 Function select register FSR Parameter select register PSR 40003 40006 Character data registers CDR1 CDR4 40007 40010 Integer data registers
19. IDR1 IDR4 40011 40014 Long data registers LDR1 LDR2 40015 40018 Real data registers RDR1 RDR2 40019 40021 40023 40024 40025 40026 40027 READ ONLY Gas concentration read only GAS Temperature read only TMP Transmitter status read only STS General fault status read only GFS Sensor faults status read only SFS Transmitter Type read only TYP Loop Drive PWM read only Lp PWM Modbus Register Data The 4600 GasPlus MB transmitter implements the Modicon 884 PLC function set except for Function 18 used to program the PLC Readings and alarm information produced by the instrument are organized into 1 contiguous block so that the master can retrieve this data in 1 poll rather than using several polls This helps to increase the bandwidth of a network of transmitters The transmitter s setup registers parameters are not organized for efficiency since they should not need to be accessed on a regular interval Readings and Status Registers REGISTER DESCRIPTION SUGGESTED TAG ADDRESS 40019 INTEGER GAS Description Gas concentration reading in PPM PPB or V V This value must be multiplied by the decimal point multiplier at register 40020 GAS_DP The concentration units are indicated in STS register see below Range 999 to 9999 40020 INTEGER GAS_DP Description Decimal point multiplier for the gas concentration reading at 40018 GAS Range 0 to 3 Value Multiply by 0 1 1 0 1 2 0 0
20. Manual 087 0014D 4 2008 COTTI Model 4600 Gas PLUS MB Transmitter HEALTH amp SAFETY Displayed ae d Default rei Description Value User Menu User Menu Sensor Parameters Parameters Sensor Damping Constant Specifies the damping time constant in seconds This is the amount of time that it will take the unit to reach 63 of its final value when suddenly SR dC exposed to a known concentration of gas The time to reach 95 of final value may be estimated by multiplying this setting by 3 This period does not include the time required to transport the gas to the sensor chamber Sensor Temperature in C Read Only Sensor Temperature in F Read Only Sensor Self Test Enable applies to instruments with the sensor self test option OFF Automatic self test is disabled ON Self test will occur at the times St ON specified by St t1 St t2 and will repeat after the number of days specified by St dt NOW Self test will occur immediately and return to its previous state ON or OFF TEST Factory use only Sensor Self Test Days Between Tests St dt applies to instruments with the sensor self i test option Specifies the number of days between tests Sensor Self Test Time of Day 1 applies to instruments with the sensor self test option Specifies the time of day hh mm when a sensor self test sequence will occur This St t1 date may be before after or equal to the 00 00 St t2 time Note that the self test w
21. PLUS MB Transmitter HEALTH amp SAFETY Miscellaneous Part Description 096 2149 Separated sensor housing w 6 feet of cable no junction box For Duct Mount Adaptors 096 2118 6 8 6 8 Curved Duct Mount Adaptor 096 2118 F Flat Duct Mount Adaptor 093 0097 Elastomeric Connector w O Ring 096 2065 Heater Assembly P models only 077 0127 Pump Assembly P models only Scott Health amp Safety 077 0120 Scott Health amp Safety Magnetic Screwdriver 096 1943 Sensor Rain Shield Calibration Adaptor uses S S End Cap 073 0165 096 1981 S S Sensor Housing 3 4 NPT w window does not include end cap 096 2466 S S Sensor Housing 1 1 4 NPT w window does not include endcap CSA Approved 096 2213 S S Sensor Housing 1 1 4 NPT w o window for condensing humidity applications 073 0165 S S End Cap 073 0210 S S End Cap Rock Solid 096 2249 Power Supply Board MB w o relays 096 2202 J Box w Terminal Board only 096 2203 J Box P C B Assembly 096 2204 Spare J Box Assembly 1 1 4 Fitting w 50 Ft cable 096 2249 1 Power Supply Board MB all relays normally open 096 2249 2 Power Supply Board MB all relays normally closed 096 2249 3 Power Supply Board MB alarm relays normally open fault relay normally closed 096 2249 4 Power Supply Board MB alarm relays normally closed fault relay normally open 096 2248 CPU Board with Relays 096 2151 Display Board 096 2104 Dust Filter H2
22. RP 53 A1 Sd 53 A1 SP 53 A2 OP 53 A2 Rd 53 A2 RP 53 A2 Sd 53 A2 SP 53 Accessibility transmitter 7 Addresses Modbus 67 AF NL 54 AF OP 54 AL IP 54 AL tO 54 Alarm acknowledging 25 indicators 1 latched 25 options 34 reset delay 35 reset point 35 set point 35 setup parameter changing 36 test operation 75 77 wiring 15 Alarm Inhibit automatic 34 period 34 35 programming 34 Alphanumeric Display 1 ASCII characters 42 Auto Lock Time Out security 37 Baud Rate See Serial Communication C Calibration 26 Circuit Breakers UL EN requirements 8 COMM Menu 58 Communication connections 19 mode 60 options 61 Conduit seals 7 Contacting Scott Health amp Safety 66 Current Loop Connections 11 13 Current Sinking Mode defined 9 Current Sourcing Mode defined 9 D Damping constant See Sensor Parameters Data Access Register Modbus 67 Data Length See Serial Communication Data Types Modbus 67 Decimal Precision See Sensor Parameters See also Sensor Decimal Precision Delays See Set or Reset delay Delimiter string 58 Digital Communications See Serial Communications Down key 24 E Electromagnetic fields 7 Engineering units See Sensor Concentration Units Error Message Table 65 F F CAL 62 F CS1 64 F CS2 64 F CS3 64 F dPG 63 F GCU 64 F HtC 62 F LbF 64 F LCd 64 F LSd 63 F LSt 63 Manual 087 0014D 4 2008 SCOTT Model 4600 Gas PLUS MB Transmitter FACT Menu 62 Fa
23. RP E2 thru RP E5 0 carriage return line feed RP E1 0d RP E2 0A RP E3 thru RP E5 0 RP E1 thru RP E5 RP E1 0d RP E2 0A RP E3 00 58 Manual 087 0014D 4 2008 SCOTT Model 4600 Gas PLUS MB Transmitter HEALTH amp SAFETY Displayed vt E Default Ae Description Value COMM MENU Report Generator Parameters con t Report Fields Data may be printed in up to 8 fields in the form of a 1 line report The data that is printed in each of the 8 fields is specified by setting an appropriate code in the RP F1 F8 parameters The table below lists each code and the data that is printed when the code is used Note that the first field printed is always the device ID SC ld SKIP blank Prints empty field MD Date mm dd USA format w o year Ex 11 22 MDY Date mm dd yy USA format w year Ex 11 22 97 DM Date dd mm European format w o year Ex 22 11 DMY Date dd mm yy European format w year Ex 22 11 975 T12H Time 12 hr format with AM PM Ex 2 15 05 PM T24H Time 24 hr Military format Ex 14 05 05 DEGC Temperature C 0 1 degree resolution Ex 25 0 DEGF Temperature F 0 1 degree resolution Ex 77 0 PCT Gas FS RP F1 Mdy RP F2 t24H RP F3 dEGF RP F4 CONC RP F5 STAT RP F6 EOL CONC Gas ppm ppb v v STAT Alarms 4 digit hex SIGS Sensor MV input thermistor MV input EOL End of Line Real Time Clock Date Used to set the internal
24. Sensor Part Number For internal use by factory Sensor Memory Checksum 1 Used for sensor memory hex Varies by integrity FFFF Sensor Sensor Memory Checksum 2 Used for sensor memory hex Varies by integrity FFFF Sensor Sensor Memory Checksum 3 Used for sensor memory FFFF Varies by integrity hex Sensor hex Varies by F Sensor LCD Contrast Setting e si Software Version Number Read Only Used by 10 00 Varies by factory i i Sensor Last Byte in File Used for sensor memory integrity 64 Manual 087 0014D 4 2008 SCOTT Model 4600 Gas PLUS MB Transmitter HEALTH amp SAFETY Troubleshooting Fault Codes and Error Messages When the transmitter detects a fault the FAULT indicator appears on the display The following also occurs unless the transmitter is in inhibit mode INHIBIT also visible on the display 1 The fault relay de energizes unless AF OP has been reprogrammed for non fail safe operation 2 The current loop output is set to the programmed fault level as set by MA F 3 If alarms were active at the time of the fault they are latched until the fault is cleared or the instrument is placed into inhibit mode 4 New alarms are not recognized until the fault is corrected 5 If the display is in RUN mode not currently calibrating or editing setup parameters the following message scrolls on the display CODE xx xx TOUCH THE ENTER KEY Touching the magnet to the S E
25. The best accuracy to be expected assuming a perfect standard is limited by the repeatability which is 2 of span full scale Sensor Response Times Electrochemical gas sensors are optimized to give the fastest possible response time while maintaining excellent zero stability and minimum drift approximate sensor response times are listed in an Addendum in the back of the manual These response time values are an average Each sensor has its own unique response time which may be slower or faster than the average If the response time appears to be excessively slow refer to the Weekly Operational Response Checks within the TRANSMITTER OPERATION section Sensor Life Because applications are of such a variable nature only experience on a given application can truly tell what the sensor life will be The 4600 GasPlus MB sensors will generally provide a minimum of 12 months of service in ambient air gas detection applications Extremes of humidity and temperature and exposure to dirty atmospheres containing particulate matter or oily vapors will decrease sensor life In addition extended exposure to target or other active gases may shorten sensor life In applications where only trace levels of target gas exist except under leak conditions sensor life will most likely be over 18 months While sensors may Manual 087 0014D 4 2008 SCOTT Model 4600 Gas PLUS MB Transmitter HEALTH amp SAFETY have some or even substantia
26. adjusted to drive precisely 20 0 mA at the full scale concentration level which can help overcome excessive wire receiver loading The value presented is the hexadecimal value that is written to the digital to analog converter DAC NOTE There is a 5 second delay between the time the parameter is set and the time the output is seen by the receiving device 4 20 mA Scale Factor Can be used to scale the current loop output by a factor effectively increasing or decreasing the full scale value Normally should be left in the default value 4 20 mA Fault Level Specifies the output in milliamps when the transmitter detects a fault condition 4 20 MA Inhibit Level Specifies the output in milliamps when the transmitter is placed into an alarm inhibit condition 4 20 mA Test Level Specifies the output in milliamps which is forced onto the current loop for test purposes checking alarms at the receiver etc Manual 087 0014D 4 2008 57 Model 4600 Gas PLUS MB Transmitter SCOTT HEALTH amp SAFETY Displayed rer F Default s Description Value COMM MENU Report Generator Parameters Report On Off Transmits an ASCII one line report on the serial communication interface to a printer or to a host computer for data capture Settings are NONE Reports disabled TIME Automatic POLL Must be prompted over serial communication REON BOTH Reports transmitted on timed interval or in Nene Peri None response
27. after 9 minutes Span Calibration When span calibrating the transmitter the concentration of gas to be used should be at least 50 BUT NOT IN EXCESS OF 90 of the transmitter s range In addition if the calibration gas is not in an air balance nitrogen for example do not allow the gas to flow across the sensor for more than 5 minutes This will deplete oxygen to the sensor and may cause erroneous readings and slow recovery to normal operation most sensors require a minimum of 5 oxygen for proper operation Special Span Calibration Requirements Hydrides Calibration Hydride sensors AsH Arsine PH Phosphine B H Diborane SiH Silane GeH Germane exhibit a significant transient response to changes of oxygen concentration This response will not effect the sensor s usefulness when operating in normal atmospheric breathing air However when calibrating a hydride sensor hydride gases bottled in backgrounds other than 20 9 oxygen should not be used as the sensor will see a change in oxygen background For this reason permeation tube devices are recommended with normal air as a diluent Ammonia NH3 Note It is acceptable to use ammonia sensors in reduced oxygen environments down to 2 providing that the sensor is stored within the environment for 24 hours prior to calibration in the same environment Span Calibration Procedure To span the 4600 GasPlus MB transmitter proceed as follows STEP 1 Inhibit alarms and th
28. ambient conditions except the Model 80 Oxygen sensor Sensors operating in conditions of less than 5 oxygen will provide erroneous or unstable concentration data Manual 087 0014D 4 2008 5 Model 4600 Gas PLUS MB Transmitter SCOTT HEALTH amp SAFETY Beyond the 5 minimum oxygen concentration requirement all Hydride sensors Arsine Diborane Germane Hydrogen Selenide Phosphine Silane require constantoxygen concentration when performing sensor calibration Fluctuating oxygen concentrations during calibration will result in erroneous concentration readings during system operation Sensor Intrinsic Safety An intrinsically safe circuit is simply defined as an electrical circuit which does not contain or store enough energy to cause ignition of a given explosive atmosphere Sensors are designed as intrinsically safe and with the transmitter incorporating built in safety barrier circuitry can be removed from the transmitter housing within explosive environments Sensor Handling and Disposal Do not attempt to disassemble the sensor in any way The sensor contains various chemicals electrolytes Skin and eye contact should be avoided and should be considered hazardous The sensor can be disposed of as ordinary trash with no special precautions Incineration in a municipal commercial incinerator poses no hazard 6 Manual 087 0014D 4 2008 SCOTT Model 4600 Gas PLUS MB Transmitter HEALTH amp SAFETY Inst
29. and HCI sensors will be affected by continuous exposure to relative humidity conditions below 50 RH therefore Models 4654 and 4672 low humidity sensors respectively are offered and should be used when operating under these conditions Extremely humid or wet conditions can affect these sensors which rely on an unobstructed gas diffusion path into the sensor If the gas stream or ambient air allows humidity to condense on the sensor the water on the membrane will cause loss of sensitivity or slow response or both Once the sensor has had a chance to dry out normal operation should be restored If the source of moisture is a result of water spray or rain a rain shield may be installed on the sensor module to protect the sensing membrane Continuous exposure to high humidity will cause the sensor to oversaturate and will shorten sensor life Normal ambient monitoring applications will not see a continuous high humidity Keep in mind that the some gases may chemically react with water vapor and be converted to other species e g ammonia hydrolyzes to form ammonium hydroxide when exposed to water vapor In addition other gases such as hydrogen fluoride are very reactive and may be absorbed on the inner surfaces of flow tubing before reaching the sensor during calibration Such questions should be referred to chemists or industrial hygienists Sensor Oxygen Requirements Gas sensors require a minimum of 5 oxygen for continuous operation under
30. available For use only with transmitters configured for remote sensor and without junction box Flowcell Part 096 2102 Designed for sample draw configurations Figure 11E Round Duct Adaptor Side View P N 096 2118 6 8 Flat Duct Adaptor Top View 096 2118 F Flat Duct Duct Adaptor 21 Model 4600 Gas PLUS MB Transmitter SCHIT HEALTH amp SAFETY 22 Manual 087 0014D 4 2008 SCOTT HEALTH amp SAFETY Manual 087 0014D 4 2008 Model 4600 Gas PLUS MB Transmitter Transmitter Operation 23 Model 4600 Gas PLUS MB Transmitter SCOTT HEALTH amp SAFETY Navigating the Instrument All adjustments on the 4600 GasPlus MB are made non intrusively through the front panel of the instrument with a magnetic screwdriver A Parameter Navigation Map is also provided at the beginning of the Technical Reference section Four keys are used for all settings Referred to as the Z ESC key Used to zero the instrument and place unit into inhibit Also used to abort an adjustment and or back up to the ESC previous menu Referred to as the S ENT key Used to span the instrument and select a menu option or to enter a setting v Referred to as either the Down and Up arrow keys Used to move up or down through a menu or to increase decrease a setting RUN Mode The transmitter s normal o
31. between 2 wires transmitters may be located at distances of up to 1500 meters from a master computer or RTU operating at 38 4k baud Note All devices must be configured for the same transmission rate typically 9600 Setting Up For Serial Communications Wiring the 4600 transmitter for serial communication is not much different than for analog transmission However slight differences exist depending on whether RS 485 and RS 232 data transmission is used While RS 232 buses require no termination resistors multi drop RS 485 buses must be terminated on both ends by a resistor that matches the characteristic impedance of the transmission line which is typically between 1000 and 1200 the characteristic impedance should be provided in the cable s technical specifications The transmitter CPU board contains a jumper selectable 120Q termination resistor This resistor is jumpered in or out by installing the appropriate plug on J6 of the CPU board see Figure 9 on page 18 for specific connection details 42 Manual 087 0014D 4 2008 SCHIT HEALTH amp SAFETY Model 4600 Gas PLUS MB Transmitter Note that serial communication may be used in conjunction with the 4 20 mA current loop output If the current loop output is not used it must be properly terminated inside the transmitter at TBI see Figure 4 on page 12 The 4600 GasPlus MB will typically use RS 485 with Modbus protocol and RS 232 with ASCII protocol Once a
32. calibrate if necessary If new sensor type restore alarm set reset points and all other required parameter settings CPU Board Perform F CAL and recalibrate current loop output Restore alarm set reset points and all other required parameter settings Power Supply Board Perform F CAL and recalibrate current loop output Display Board Adjust LCD contrast if necessary Manual 087 0014D 4 2008 65 Model 4600 Gas PLUS MB Transmitter SCOTT HEALTH amp SAFETY Technical Supply Voltage Operating Current With Relays Without Relays Repeatability Linearity Outputs 4 20 mA Loop Output Optional Relays Display Indicators Magnetic Keys Communications Diagnostics Operating Temperature Humidity Weight Separated Sensor Approvals Sensor Battery Life Warranties Transmitter Sensor Subject to change without notice 66 Specification s 18 to 28 VDC 80 mA 18 VDC 83 mA 24 VDC 85 mA 30 VDC 54 mA 18 VDC 50 mA 25 VDC 48 mA 30 VDC Note Reduce by 24 mA if powering current loop separately 2 FS 2 FS 4 20 mA current loop RS 232 or RS 485 jumper software selectable 1 0 to 24 0 milliampere actual range Isolated Non lsolated Current Source Sink Drives 950 Qof total load resistance 24 VDC includes wiring Adjustable 4 00 and 20 0 output levels to correct receivers Open current loop fault detection 2 SPST concentration relays and 1 SPST fail relay
33. in the calibration adapter In this case the diffuser must be removed prior to starting the process STEP 1 With pliers or a 9 16 wrench remove the barbed hose fitting from the calibration adapter STEP 2 Through the hole push out the diffuser with a screwdriver or a pencil Put the plug in a pocket or other safe place STEP 3 Replace the hose fitting and tighten STEP 4 When the calibration process is finished put the diffuser plug back into its hole and press it until its face is flush with calibration adapter s face II Using calibration gas cylinders STEP 1 Attach a regulator capable of delivering 0 5 Ipm gas to the cylinder STEP 2 Connect the regulator output to a calibration adapter using a length of Teflon tubing or Tygon clad Teflon Do not apply to the sensor at this time STEP 3 Be sure the porous diffuser plug is in place in its hole in the calibration adapter STEP 4 Allow the gas to flow through the delivery tube and calibration adapter to let them equilibrate with the gas before connecting to the sensor Depending on the local environment this may take 5 to 15 minutes or longer STEP 5 While waiting check the sensor zero reading and zero it if necessary ACD s Advanced Calibration Designs model 300 and EC Cal Cal 2000 do not have this problem You may suspect your generator is one that has a weak pump if the sensor s response is zero or much lower than anticipated 32 Manual 087
34. is locked Note that the transmitter can automatically re lock when a non zero value is entered under the LK tM parameter Lock Password The lock password is visible for changing only when the lock icon is not present on the LCD The master password is 251 and will open the lock at any time Auto Lock Time Out Specifies the number of minutes after which the transmitter will automatically re lock The period begins from the moment of toggling the lock off and will not re lock until resuming operation in RUN mode will not auto lock while reviewing or editing parameters The feature is completely disabled by setting the parameter to O Default Value 0 Off 1 0n 0 Off Manual 087 0014D 4 2008 SCOTT Model 4600 Gas PLUS MB Transmitter HEALTH amp SAFETY The COMM Menu Accesses the transmitter s loop current report generator and serial communication parameters Displayed A Default As COMM MENU Loop Current Parameters Description Min Max Value 4 00 mA Loop Cal Point This value can be adjusted to drive precisely 4 00mA to calibrate the 0 concentration level which can help overcome excessive wire receiver loading The value presented is the hexadecimal value that is written to the digital to analog converter DAC NOTE There is a 5 second delay between the time the parameter is set and the time the output is seen by the receiving device 20 0 mA Loop Cal Point This value can be
35. real time clock date Format MM dd Example 2 2 set by factory 08 14 Real Time Clock Year Used to set the intermal real time clock year A Note About Year 2000 Roll Over The transmitter s is not controlled in any way by the internal clock which is used only for date recording during span adjustment and reports Only two digits are maintained for the year dates which should not be reported over the serial communication Real Time Clock Hour Used to set the internal real time clock Format HH MM Example 09 30 set by factory Manual 087 0014D 4 2008 59 Model 4600 Gas PLUS MB Transmitter SCOTT HEALTH amp SAFETY Displayed men E Default As Description Value COMM MENU Serial Communication Device Address Specifies the address to which the instrument will respond to gueries This field 4 247 4 also shows up in the first column printed by the report generator SC Ad Serial Communication Baud Rate Specifies the data communication baud rate 110 4800 150 9600 SS 300 19 2 k 600 31 2 k 1200 38 4k 2400 Serial Communication Data Length Specifies SC dL the number of data bits transmitted in each byte 7 BIT 8 BIT Serial Communication Idle Specifies the number of idle characters silent interval that must SC ld be seen before recognition of the end of message Modbus 4 This can be used to adjust query response synchronization on noisy data lines Serial Communication Li
36. y SWITCH Place in the OFF position before removing Display CPU board stack Ensure power switch is in the OFF position prior to replacing board stack 14 76543 Far Jr Sr ar ar ES TB1 EE I i I pe K a K Ve ps 470 OHM 1 2W RESISTOR ay t PS EARTH GROUND Figure 4E Alternate 4 20 mA Connections 5432 ar TE E N KOKO KOKO K VA QO A e S NAON OA v TB1 QUAD SCAN POWER SUPPLY PC BOARD TRANSMITTER INPUTS CHI CH2 CH3 CH4 ABCABCABCABC S55555555555 AHARAHARARKF 6 19K RESISTOR ACROSS ALL UNUSED CHANNELS 088 6191 Figure 4F Connection to 6004 6104 Quad Scan Manual 087 0014D 4 2008 COTTI Model 4600 Gas PLUS MB Transmitter HEALTH amp SAFETY 7654321 L u CUSTOMER SUPPLIED INTERCONNECT CABLE TBI 3 COND 20AWG SHIELDED CABLE MODULE 1 CH1 Place in the OFF position before removing Display CPU board stack Ensure power switch is in the OFF position prior to replacing board stack EISEN SERIES 6800 BACK PLANE
37. 1 3 0 001 Manual 087 0014D 4 2008 67 Model 4600 Gas PLUS MB Transmitter SCOTT HEALTH amp SAFETY 68 REGISTER DESCRIPTION SUGGESTED TAG ADDRESS 40021 INTEGER TMP Description Temperature reading on 0 1 C Range 400 to 750 40 C to 75 0 C Multiply this value by 0 1 before using 40022 INTEGER TMP_DP Description Decimal point multiplier for the temperature reading at 40021 TMP Fixed value of 1 40023 UNSIGNED INTEGER STS Description Transmitter status word Range 0 to 65535 High Byte STON LPO ALO RFF LCK U2 U1 UO Low Byte IHB MNT ALF AL2 AL2 RLF RL2 RL1 BIT 0 RL1 Alarm 1 relay status O inactive 1 active see note below BIT 1 RL2 Alarm 2 relay status O inactive 1 active see note below BIT2 RLF Fault relay status O inactive 1 active see note below BIT 3 ALI AL1 display indicator status O off 1 on BIT 4 AL2 AL2 display indicator status O off 1 on BIT 5 ALF FAULT display indicator status 0 off 1 on BIT 6 MNT MAINT display indicator status O off 1 on BIT 7 IHB INHIB display indicator status O off 1 on BITS 8 9 10 U0 1 2 Displayed units indicator status U2 U1 UO Indicator 0 0 0 None 0 0 1 F Fahrenheit 0 1 0 C Celsius 0 1 1 lt reserved gt 1 0 0 LEL Lower Explosive limit 1 0 1 V V Percent Volume per Volume 1 1 0 PPM Parts Per Million 1 1 1 PPB Parts Per Billion BIT 11 LCK Lock display indicator status O off 1 on BIT 12 RFF Remote fu
38. 100 Dichlorosilane SiH CI Order HCI sensor Diborane B H Model 67 XXXX XXXX 3 PPM 0003 10 PPM 0010 Hydrogen H Model 87 8 Digit Prefix Suffix 096 1967 XXXX 0001 0004 0005 0010 Hydrogen Chloride HCl Low Humidity lt 50 Model 54 8 Digit Prefix Suffix 096 1947 XXXX 10 PPM 0010 25 PPM 0025 50 PPM 0050 100 PPM Hydrogen Chloride HCI High Humidity gt 50 Model 71 0050 0100 Hydrogen Fluoride HF Hi RH gt 75 Model 70 8 Digit Prefix Suffix 096 2185 XXXX 0010 0025 0050 0100 Hydrogen Selenide H Se Model 89 8 Digit Prefix Suffix 096 1968 XXXX 1000 PPB 10 PPM 0010 Hydrogen Sulfide H S High Humidity gt 50 Model 81 8 Digit Prefix Suffix 096 1961 XXXX 0010 0025 8 Digit Prefix 096 1958 Suffix XXXX 0010 0025 0050 0050 0100 0200 0001 0003 0005 0010 8 Digit Prefix 096 1955 Suffix XXXX 0002 0010 0100 Manual 087 0014D 4 2008 Hydrogen Sulfide H S Low Hum lt 50 Model 72 8 Digit Prefix 096 1959 Suffix XXXX 0010 0025 0050 0100 0200 SCOTT HEALTH amp SAFETY Model 4600 Gas PLUS MB Transmitter Call 800 247 7257 or Your Local Sales Representative Sensors Methyl Hydrazine MMH Model 35 8 Digit Prefix Suffix 096 2423 XXXX 50 PPM Methanol CH OH Model 59 8 Digit Prefix Suffix 096 2148 XXX
39. 100 0 0 100 0 DEG EU Since Modbus registers are defined to be 16 bits wide LONG and REAL data types require 2 consecutive registers and STRING data types may require 1 register for every 2 characters In most applications the master software will read the proper number of registers according to the data type In addition the master software should provide a means for byte reversing these types to accommodate big endian and little endian problems Modbus drivers are usually supplied with industrial computer SCADA and MMI programs such as Citect Wonderware and FIX DMACS If you are integrating the 4600 Gas Plus MB transmitter with a DCS or PLC system it may be important to know that the 4600 Gas Plus MB transmitter most closely emulates the Modicon 884 PLC in that it supports Modbus Functions 1 8 and 15 19 Manual 087 0014D 4 2008 45 Model 4600 Gas PLUS MB Transmitter SCOTT HEALTH amp SAFETY Transmitter Registers The table below lists the first 26 registers for the 4600 Gas Plus MB transmitter Register numbers 40019 to 40026 contain the most important data that the transmitter produces By structuring this data into consecutive registers applications may read the entire register block with 1 transaction This helps to increase the bandwidth of a network of transmitters by eliminating extra messages if the data were noncontiguous Register Number Register
40. 4 Access the selected parameter X ENT STEP 5 W A Scroll to select parameter value Store the selected parameter STEP 6 value Verify SEt is displayed Return to the previous menu level STEP 7 J 3x returns to the main display A form is provided in Touching the magnet to the S ENT key while the parameter is displayed the back of selecting the parameter causes its value to be displayed for editing Editing this manual is done by placing the magnet over the Up and Down arrow key to increment or to record decrement its value and then placing the magnet on the S ENT key to store the new value The display changes to SEt if successful or ERR if a your memory or other error is detected transmit t er s paramet er set up Acknowledging Latched Alarms Latched alarms may be reset only after conditions have returned to normal concentration is below the alarm reset point To reset a latched alarm momentarily apply the magnet to any key Observe that the specific alarm indication has cleared from the main display Inhibiting Output The 4600 GasPlus MB transmitter s INHIBIT function prevents activation of i alarm relays in addition to holding loop output at the programmed inhibit level AVIV NOTE Alarms are inhibited automatically at power on for 30 seconds When INHIBIT is toggled ON it will automatically toggle OFF after 9 minutes unless a key is activated The inhibit time out period is reinitialize
41. 8 32767 Computed Gas Concentration in Either PPM PPB or V V gas do Iw 400200 J2 Gas Conc Multiplier 0 1 1 0 1 2 0 01 3 0 001 gt mp nr aoner sores beet _ Reponea Temperature ftmp dp Jint 400220 Temperature Multiplier 0 1 1 0 1 2 0 01 3 0 001 Jstaus ur solo eesal System indicator Relay Status sys gen su unt 40024j0 65535 SystemFautstaus t Jsensorfautis unt 40025j0 e5535 Sensor Faut Status Transmitter Type 4600 or 4688 re transmitter_type UINT 40026 65535 read before accessing other data Alarm Set Point 1 Value INT 40281 32768 32767 lidri sensor dependent use gas_dp multiplier Alarm Set Point 2 Value INT 40283 32768 32767 Jidr1 sensor dependent use gas_dp multiplier Alarm Reset Point 1 Value INT 40285 32768 32767 lidri sensor dependent use gas_dp multiplier Alarm Reset Point 2 Value INT 40287 32768 32767 Uert sensor dependent use gas_dp multiplier ela sto I Tee AL1 Delay on Set Option in seconds ap setdly2 ut 40290j0 to Je 11 2fAL2 Delay on Set Option in seconds A1 RD ag ut a0202j0 be Jo d dat Delay on Reset Option in seconds A2 RD rstdly2 JUNT 40298 o _ 9999 fiat 12 a AL2 Delay on Reset Option in seconds AL IP_ alm_ihbpd ut Lech Je fian 16 2JAam inhibit Period in Minutes IA1 0P almi opts UINT 4029810 bb jo 8 2 AL1 Options 0 None 1 Failsafe 2 L atching 3 Both A2 0P alm2 opt
42. D gt oO e N Sal 0 255 cart 41 1 4tnCharotFieldDelimiter String O will terminate string 0 Pe ei 42 Jan char of field delimiter string O will terminate string CHAR Luc e can 43 1 1stCharof End of Line String O will terminate string CHAR 40328 0 255 oi 44 1 2ndCharotEndofLine String O will terminate string RP E3 rep eo 3 Joan 40328 o Ge ai 45 1 srdCharofEndofLine String 0 will terminate string RP E4 rep el 4 Joan 40s29o 255 edr 46 1 4ih Char of End of Line String O will terminate string RP ES rep eo 5 char 40320lo 255 oan 47 1 5ihCharotEndoiLine String O will terminate string IRP PD rep period IuNT 40330 0 7200 je 37 2 Seconds Between Reports when rep_mode 1 TIME MA inhibitua INT 4034811500 20000 Io 34 2 uA Output During Alarm Inhibit Indication mA 1000 PE SE E ee ee E uA Output During Test must use special command to MAT test_uA INT 40351 24000 idr1 35 2 override output a rer Scale Factor Applied to the Loop Output in ma_scaler UINT 40353 50 2000 idri 32 2 50 0 50 200 2 00 O D D pla ele NN DID D N bal u oO A o 5 a o 76 Manual 087 0014D 4 2008 SCOTT Model 4600 Gas PLUS MB Transmitter HEALTH amp SAFETY Record Your Parameters Parameter Label Transmitter NOTES Manual 087 0014D 4 2008 77 Model 4600 Gas PLUS MB Transmitter SCOTT HEALTH amp SAFETY 78
43. EN SES E Default As Description Min Max Value USER MENU Alarm Relay Parameters Maximum Negative Drift Fault Alarm At or below this concentration the unit will display the fault indicator open the fault 10 FS relay and output the programmed milliamp fault level Fault Alarm Options NONE Non latching non failsafe FSF Non latching failsafe LAT Latching non failsafe BOTH Latching failsafe The failsafe option keeps the relay energized None Both in the non alarm state and de energizes it in alarm and power failure The latching option requires you to manually reset the fault indicator and relatch once the fault has cleared Alarm Test Override Used to test each alarm indicator and relay individually or in groups regardless of the alarm inhibit state Activates alarm indicators and energizes non failsafe relays de energizes failsafe relays Note that this test has no affect if the alarm is currently active and cannot be used to turn off an alarm The state is reset to 0 at 7 startup and is defined below Alarm Inhibit Period Specifies the number of minutes which the alarm inhibit period will remain on before automatically timing out and re enabling alarm relays 0 None 4 Fault 1 AL1 5 AL1 Fault 2 AL2 6 AL2 Fault 3 AL1 AL2 7 AL1 AL2 Fault NOTE To prevent false alarms at the receiver set the receiver channel to alarm inhibit prior to making these adjustments 54
44. ETY NOTE Use only dedicat ed st ainless steel regulat ors for chlorine gas as prior use of H S can cont aminate the regulator and reduce the concentration of CI as much as 50 30 STEP 6 Once the displayed concentration has stabilized hold the magnet over the S ENT key until SPAN appears in the display approximately 5 seconds then remove the magnet The gas concentration will then reappear in the display and begin to blink indicating that it may be adjusted Place the magnet over the Up arrow or Down arrow key to increment or decrement the value until it matches the known gas concentration flowing to the sensor Once the concentration has been adjusted touch the magnet to the S ENT key to accept the value or Z ESC to abort the calibration without saving any changes Immediately upon touching the magnet to the S ENT key The display shows Comments WAIT Compute the calibration factor and update the non volatile memories SET Memory update was successful 100 1550 Calibration Factor RUN Return to normal display The calibration factor has a direct relationship to the output of the sensor Sensors having a calibration factor of 150 or less are approaching the end of their useful life and should be replaced soon STEP 7 Once the displayed concentration has returned to 0 take the transmitter out of inhibit mode by momentarily applying the magnet to the Z ESC key Observe that the INHIBIT indicator i
45. Gas PLUS MB Transmitter SCOTT HEALTH amp SAFETY Supply board in the bottom of the housing The terminal blocks pull out for easy access Be sure power switch is in the OFF position The power switch is located on the display board STEP 4 Make wire connections 16 to 22 AWG wire is recommended for electrical connections in accordance with Figures 4 7 as applicable Ensure that proper wire gauge is used and that all wire electrical grounds and sensor connections are secure and intact STEP 5 Replace transmitter stack assembly and return power switch to ON STEP 6 Screw transmitter cover on ensuring a tight seal STEP 7 Remove red label from the bottom of the sensor end cap Remote Sensor Junction Box Mounting If the application requires that the sensor be mounted remote from the transmitter care should be taken to insure that all code and regulatory requirements are met In these applications it is recommended that the sensor be separated from the transmitter no more than 50 Additional items needed will be a junction box and sensor cable see Figure 8 These items can be ordered from the factory Conduit must be obtained from your local vendor Maximum Wire Length AWG wire size requirements are dependent upon power supply voltage and wire length The maximum distance between the transmitter and its power supply is determined by the maximum allowable interconnecting loop voltage drop If the voltage drop i
46. M 4 DMY 5 T12H 6 T24H rep_fie di INT 40314 13 idr1 48 2 7 DEGF 8 DEGC 9 PCT 10 CONC 11 STAT 12 SIGS 13 EOL ield 2 0 SKIP 1 MD 2 MDY 3 DM 4 DMY 5 T12H 6 T24H rep_fie d2 INT 40315 13 idr1 49 2 DEGF 8 DEGC 9 PCT 10 CONC 11 STAT 12 SIGS 13 EOL ield 3 0 SKIP 1 MD 2 MDY 3 DM 4 DMY 5 T12H 6 T24H rep_field3 INT 40316 13 idr1 50 2 7 DEGF 8 DEGC 9 PCT 10 CONC 11 STAT 12 SIGS 13 EOL ield 4 0 SKIP 1 MD 2 MDY 3 DM 4 DMY 5 T12H 6 T24H rep_field4 INT 40317 13 idr1 51 2 7 DEGF 8 DEGC 9 PCT 10 CONC 11 STAT 12 SIGS 13 EOL ield 5 0 SKIP 1 MD 2 MDY 3 DM 4 DMY 5 T12H 6 T24H rep_field5 NT 8 13 idr1 52 2 7 DEGF 8 DEGC 9 PCT 10 CONC 11 STAT 12 SIGS 13 EOL ield6 ield7 ield8 A n ield 6 0 SKIP 1 MD 2 MDY 3 DM 4 DMY 5 T12H 6 T24H rep_f INT 13 idr1 53 2 7 DEGF 8 DEGC 9 PCT 10 CONC 11 STAT 12 SIGS 13 EOL ield 7 0 SKIP 1 MD 2 MDY 3 DM 4 DMY 5 T12H 6 T24H P F7 rep_f T 13 idr1 54 2 7 DEGF 8 DEGC 9 PCT 10 CONC 11 STAT 12 SIGS 13 EOL ield 8 0 SKIP 1 MD 2 MDY 3 DM 4 DMY 5 T12H 6 T24H P F8 rep fi INT 13 idr1 55 2 7 DEGF 8 DEGC 9 PCT 10 CONC 11 STAT 12 SIGS 13 EOL lo 255 cart 38 11 1st Char of Field Delimiter String O will terminate string CHAR lo es cart 39 2nd Char of Field Delimiter String O will terminate string HA lo 255 cart 40 3rd Char of Field Delimiter String O will terminate string gt gt gt Q Q Q 99 wo wo O O N 0 gt e N X D pla ele amp amp NN al O
47. MB Transmitter HEALTH amp SAFETY Current Sink with Non Isolated Loop Power pen R SWITCH TB1 R N KV AN LE RN RN EE Rp e SY BY BY RY LY LY Place in the OFF position before removing Display US MAL ees ae PR rc N ps A DEE CPU board stack Ensure done eo Ge to PLC I replacing board stack DCS J EARTH GROUND day i ii Ps _ EARTH GROUND Figure 4C Alternate 4 20 mA Current Loop Connections Current Sink with Isolated Loop Power a S Eara VI DI aAA POWER 181 9000000 gt SWITCH KESK 1 E DIC Kia Place in the OFF position before removing Display PLC CPU board stack Ensure DCS E E power switch is in the OFF position prior to replacing board stack EARTH ae GR Loop orno GROUND P S 24V EARTH GROUND au t PS EARTH GROUND Figure 4D Alternate 4 20 mA Current Loop Connections Manual 087 0014D 4 2008 13 Model 4600 Gas PLUS MB Transmitter SCOTT HEALTH amp SAFETY Required Connections When Not Using Current Loop Output d gt SWITCH Place in the OFF position before removing Display CPU board stack Ensure power switch is in the OFF position prior to replacing board stack
48. NT key will cause the display to sequentially scroll an error message for each fault detected Below is a list of error messages along with possible corrective actions ERROR MESSAGE POSSIBLE CORRECTIVE ACTION ROM FAULT Repair or replace CPU board RAM FAULT Repair or replace CPU board USER MEM Reset USER memory Verify all parameter values and restore restore required settings FACT MEM Reset FACT memory Perform F CAL Calibrate current loop SENSOR MEM Replace sensor LOW POWER Verify 18 to 28 VDC input at TB1 of PS board Isolate problem to faulty board Repair or replace board LCD BUS Display may be unreadable Isolate problem to faulty board Repair or replace board CLK BUS Isolate problem to faulty board Repair or replace board SENSOR MISSING Re tighten sensor housing cap Check sensor connections to board Replace sensor or isolate problem to faulty board LOOP OPEN Check current loop connections refer to electrical wiring diagrams SPI BUS Repair or replace CPU board CPU EE Repair or replace CPU board NEG DRIFT Zero calibrate sensor GAS SIG LO Replace sensor or isolate to faulty board then repair or replace board GAS SIG HI Retighten sensor housing cap TMP SIG LO TMP SIG HI SELF TEST FAIL Verify self test plug connections Repair or replace sensor or self test generator GAS CAL LOW Replace sensor Required Procedures after Replacing Equipment SENSOR Zero and span
49. RECEIVER P POWER SUPPLY BOARD LOWER 9 Q Host KY 5 with Termination P6 w o P6 w o P6 w o P6T with Termination Termination Termination Termination Note 1 RS485 logic 1 idle state A lt B by 200mV 2 RS485 logic 0 A gt B by 200mV 3 Internal termination When termination plug P6 is installed 1 5K OHM 4VO AA gt B TB1 6 R 120 OHM 1 5K OHM E Gnd O OA TB1 5 Ra 4 RS485 option requires P6 or P6T on J6 of cpu board P6T is req only on unit furthest from host Figure 6 RS 485 Wiring amp Configuration 16 Manual 087 0014D 4 2008 SCOTT Model 4600 Gas PLUS MB Transmitter HEALTH amp SAFETY 765432141 a SE rar I T 181 44444 LI Ee et bol LI 15 RS232 OPTIONS i CONNECTIONS 24V 2 Pwr Sig Common 5 Tx 6 Rx 7 No Connection KG 470 OHM 1 2W RESISTOR MRS REQUIRED IF CURRENT LOOP IS NOT CONNECTED TO E EXTERNAL RECEIVER Ik RL3 EE RLI POWER SUPPLY BOARD LOWER Figure 7 RS 232 Wiring amp Configuration Manual 087 0014D 4 2008 17 Model 4600 Gas PLUS MB Transmitter SCOTT HEALTH amp SAFETY
50. REENWHITE GND 6 BLUE WHITE DTA E ORANGE WHITE CLOCK 8 BROWN MWHITE GND 1st COLOR IS THE BASE INSULATION 2nd COLOR IS THE STRIPE EXAMPLE BLUE WHITE IS A BLUE WIRE WITH 18 A WHITE STRIPE COLOR CODE OF CABLE SUPPLIED BY SCOTT INSTRUMENTS 50 FT 15 2 METRES MAX SEPARATION PRIOR TO JUNE 2001 PIN WIRE COLOR SIGNAL 1 BLACK 5VDC 2 BROWN VIN 3 RED VTEMP 4 ORANGE SELF TEST 5 GREEN GND 6 YELLOW DTA 7 WHITE CLOCK 8 BLUE GND Figure 8 Junction Box Electrical Installation Manual 087 0014D 4 2008 SCHIT Model 4600 Gas PLUS MB Transmitter HEALTH amp SAFETY a SEE P6 OPTIONS lt P6 NON ISOLATED RS232 OPTION 110 0 2 POT NON ISOLATED RS485 OPTION WITH TERMINATION _CPUP C B A DISPLAY P C B A REMOVED FROM UNIT WHEN MAKING JUMPER MODIFICATIONS TO P6 BTI JI P6 NON ISOLATED RS485 OPTION WITHOUT TERMINATION oy 9 GND2 KN N OFF N A as CUT TOP VIEW OF CPU P C B A CENTER BOARD SHOWN w DISPLAY P C B A TOP BOARD REMOVED FOR CLARITY CERERE EHEEEEI Pec fc EHHHEHHEHE HEHHEE J EHAK Manual 087 0014D 4 2008 POWER SUPPLY BOARD LOWER Figure 9 RS 232 RS 485 Connections 19 Model 4600 Gas PLUS MB Transmitter SCOTT IMPORTANT
51. S amp CO only Bag of Qty 10 096 2141 HeS Filter for HCN NH3 amp Hydride Sensors 096 2146 5 Condensing Humidity Membranes for Humishield H2S only Manual 087 0014D 4 2008 1 4 Turn Calibration Part 074 0305 074 0344 074 0345 096 2101 096 2102 096 2105 096 2140 096 2142 096 2273 096 2276 096 2278 096 2352 096 2387 Accessories Description Ya Turn Teflon Rain Shield Ya Turn Sensor Self Test End Cap Assembly Ya Turn Sensor Self Test End Cap Assembly Rock Solid Y Turn Calibration Plug Assembly w 1 va NPT x 3 16 O D Barb Fitting Ya Turn Flowcell Assembly w 2 1 8 NPT x 3 16 O D Barb Fitting Ya Turn Sensor End Cap Assembly Ya Turn Hydride Sensor End Cap Assembly w IPA Filter 096 2103 Condensing Humidity End Cap Ya Turn Sensor End Cap Assembly Rock Solid Condensing Humidity End Cap Rock Solid Ya Turn Calibration Plug Assembly Rock Solid w 1 14 NPT x 3 16 OD Barb Fitting Y Turn Methyl Mercaptan Sensor 4645 End Cap Assembly w Hydrogen Sulfide Getter Filter 096 2323 Ya Turn Phosgene Sensor 4650 End Cap Assembly w Hydrogen Cyanide Getter Filter 096 2386 83 Model 4600 Gas PLUS MB Transmitter SCOTT HEALTH amp SAFETY 84 Index Symbols 20 0 mA Loop Cal Point 57 4 20 mA Fault Level 57 4 20 mA Inhibit Level 57 4 20 mA Scale Factor 57 4 20 mA Test Level 57 4 00 mA Loop Cal Point 57 A AT OP 53 A1 Rd 53 A1
52. SIDE VIEW NOTE 1 CONNECTOR J5 ON CPU P C B A PLUGS INTO CONNECTOR P5 ON POWER SUPPLY P C B A MOUNTED INSIDE TRANSMITTER HOUSING POWER SUPPLY P C B A OPTIONS PART No DESCRIPTION 096 2249 WITHOUT RELAYS 096 2249 1 WITHRELAYSN O 096 2249 2 WITHRELAYSN C 096 2249 3 WITH ALARM N O amp FAIL N C 096 2249 4 WITH ALARM N C amp FAIL N O Figure 2 GasPlus Assembly Manual 087 0014D 4 2008 SCOTT Model 4600 Gas PLUS MB Transmitter HEALTH amp SAFETY IMPORTANT Opt ional silver 6 8 Curved Duct dot A used on Mount Adaptor Shown y Prt 096 211 8 6 8 Rock Solid Flat Duct Mount Adaptor Prt 096 2118 F Sensors only must be orientated as shown Separated ya Flat Duct Adoplor Top View 096 2105 1 4 tum Sensor End Cap N Round Duct Adaptor N Side Views YR Optional Silver N Dot 4600 Rock Solid N Sensor Figure 3 Optional Duct Mount Installation SE 7 DENR T N 2 TISSI N See Figures 4A through 4E K K for 4 20mA Connection TB1 ZY XI NI I ID BY By Options Por dP Pay Pa ER N 4 Terminal Block TB1 Terminal No Function 1 24VDC Power Supply Board Lower 2 System Ground Shown widisplay 3 4 20 mA In and CPU Boards 4 4 20 mA Out removed
53. X 500 PPM Methyl lodide CH D Model 44 8 Digit Prefix Suffix 096 2188 XXXX 1000 PPM 1000 Methylene Chloride CH CI Model 34 P 8 Digit Prefix Suffix 096 2189 XXXX 200 PPM 0200 Methyl Mercaptan CH SH w Filter Model 45 8 Digit Prefix Suffix 096 2348 XXXX Methyl Mercaptan CH SH Model 46 8 Digit Prefix Suffix 096 2348 XXXX Nitric Oxide NO Model 86 8 Digit Prefix Suffix 096 1966 XXXX 0025 0050 0100 0500 Nitrogen Dioxide NO Model 84 Suffix XXXX 0010 0025 0050 0100 0250 8 Digit Prefix 096 1964 Nitrogen Trifluoride NF Model 33P 8 Digit Prefix Suffix 096 2099 XXXX 10 PPM Ozone 0 Model 60 8 Digit Prefix Suffix 096 1948 XXXX 1PP 0001 2PP 0002 3PP 0003 5 PP 0005 10 PP 0010 15 PP 0015 25 PP 0025 30 PP 0030 50 PP 0050 100 PP 0100 Oxygen 0 Model 80 8 Digit Prefix Suffix 096 1960 XXXX Phosgene COCI Model 49 8 Digit Prefix Suffix 096 2235 XXXX Phosgene COCI w Filter Model 50 8 Digit Prefix Suffix 096 2235 XXXX Phosphine PH Model 66 8 Digit Prefix Suffix 096 1954 XXXX 1000 PPB 0003 0010 Silane SiH Model 68 8 Digit Prefix Suffix 096 1956 XXXX 1000 PPB 1000 10 PPM Manual 087 0014D 4 2008 Sulfur Dioxide SO Model 83 8 Digit Prefix Suffix 096 1963 XXXX 0010 0015 0025 0050 0100 0200 0500 S
54. affect the RFF bit in the STS register Register sequence 1 CDR1 0 4 see table below 2 PSR not used 3 FSR 11 CDR1 AL1 AL2 No Change No Change No Change Be See application note in Command 10 Command 12 Set Clear inhibit mode Sequence IDR1 1 FSR 12 will force the instrument in Inhibit mode IDR1 0 FSR 12 will clear the instrument Inhibit mode To set or change the Inhibit mode timeout period AL IP perform the following IDR1 desired period in minutes Be careful since there is no limit checking on the value PSR 16 FSR 2 Example Set the Inhibit period to timeout in 6 minutes IDR1 6 PSR 16 FSR 2 To verify read location 40297 refer to Appendix 3 Command 20 Zero calibrate sensor Sets the transmitter s zero point Does not use PSR or data registers Care must be taken to ensure that clean zero grade air is present at the sensor Updates the RFF bit in the STS register FSR 20 Command 21 Span calibrate sensor Apply gas to sensor IDR1 conc FSR 21 Command 22 Force Sensor Self Test IDR1 2 FSR 22 Manual 087 0014D 4 2008 SCOTT Model 4600 Gas PLUS MB Transmitter HEALTH amp SAFETY Command 30 Update real time clock date Synchronizes instrument date to host date Does not use PSR register Updates the RFF bit in the STS register Sequence CDR1 0 99 2 digit year CDR2 1 12 month CDR3 1 31 day FSR 30 Command 31 Update re
55. al time clock time Synchronizes instrument time military time to host time Does not use the PSR register Updates the RFF bit in the STS register Sequence CDR1 0 23 hours CDR2 1 59 minutes CDR3 1 59 seconds FSR 31 Command 40 Toggle password security on off Uses the password stored in IDR1 to toggle security on off Note that if the password is incorrect this function will not be successful Updates both the RFF and LCK bits in the STS register Sequence FSR 40 Manual 087 0014D 4 2008 73 Model 4600 Gas PLUS MB Transmitter SCHIT HEALTH amp SAFETY 74 Manual 087 0014D 4 2008 SCOTT Model 4600 Gas PLUS MB Transmitter HEALTH amp SAFETY Appendix 3 Modbus Register Table Suggested Tag Type 3 i D reg PSR FSR Comments t fir mm 40001 deal Function Selection Register t psr fit 40002 o 65535 Parameter Selection Register 7 t feon JM 40003 ad 255 characterParameterdbta Jodie Iw 40004 sl Character Parameter Data t feas Jr Lang ad 255 Character Parameter Daia r Jan nm 40006 of 258 Character Parameter Daia lt lt lt lt 00 t fon nt 40007 32768 32767 integer Parameter Daia fie t 40008 32768 32767 integer Parameter Dep t fiors Jim Lang 32768 32767 integer Parameter Daia _________ t fiara T 40010 32768 32767 integer ParameterData rz oe Iw Tammal 3276
56. allation Location Considerations Prior to installing the transmitter consideration should be given to the following en items when choosing its location Sensors ti ured aft amp r 2 Gas Density For gases heavier than air the sensor is recommended to tober 2001 be installed approximately 18 from floor level In these applications care S N 100 1 XXXX can should be taken to protect the sensors from physical damage For also be mount ed gases that are lighter than air sensors should be installed at a high level horizont ally Do not or close to the potential leak source mount ona 45 3 Potential Gas Sources The location and nature of potential vapor gas degree angle sources e g pressure amount source temperature and distance need to be assessed 1 Orientation Always mount the sensor pointing downwards 4 Ambient Temperature Insure that the system is located within an area that complies with the specified operating temperature range 5 Vibration Mount the transmitter and sensor in a manner that minimizes vibration 6 Accessibility When determining mounting location consider future maintenance and calibration requirements 7 Avoid water Droplets adhering to the outer membrane of the sensor will reduce or negate sensor performance A rain shield is recommended for outdoor installations 8 Avoid strong electromagnetic fields Mounting the gas transmitter near power transformers or other strong EM
57. as generator and enters a recovery period while maintaining the inhibit state This state is maintained until the measured concentration drops to 5 FS or below but does not exceed the time specified in seconds by the SR Rt parameter self test recovery time Upon return to normal operation alarm and current loop operation return to normal and the St ON bit in the transmitter status register is cleared Note that alarms may occur if recovery period expires and the gas concentration has not subsided below the two alarm reset points If this should occur increase the recovery time specified by St Rt UNIVERSAL GAS TRANSMITTER HEALTH E SAFETY W senes A 4600MB Op EN Ne WHEN EXPLOS SENSOR SELF TEST GENERATOR ASSEMI No 074 0344 RR SENSOR SELF TEST i gt SENSOR END CAP No 074 0335 REQUIRED FOR ROCK SOLID SENSORS ng I A gt a Figure 13 Sensor Self Test Generator 40 Manual 087 0014D 4 2008 SCOTT HEALTH amp SAFETY Model 4600 Gas PLUS MB Transmitter Serial Communications Manual 087 0014D 4 2008 41 Model 4600 Gas PLUS MB Transmitter SCOTT HEALTH amp SAFETY Overview There are 2 serial communication protocols in the 4600 GasPlus MB transmitter The first protocol is an ASCII report line which is transmitted in response to a poll from a master receiver or may be transmitted automatically at p
58. code will be displayed upon returning to RUN mode Place the magnet over the Z ESC key to return to the A1 SP selection 6 To abort changes to the old value place the magnet over the Z ESC key and observe the display returns to the A1 SP selection 7 Place the magnet momentarily over the Up arrow key and observe the display changes to A1 RP This is the alarm 1 reset point Place the magnet over the S ENT key to display the reset point value Use the magnet over the Up and Down arrow keys to change to the desired value Place the magnet over the S ENT key to save the new value and observe SEt in the display If the value cannot be saved in memory ERR will be displayed Place the magnet over the Z ESC key to return to A1 RP selection 8 Momentarily touch the Up arrow key and observe A1 Sd This is the alarm 1 set delay value in seconds Use the same procedure detailed in steps 3 7 to set the desired value and select and set the remaining alarm parameters A1 Rd and A1 OP reset delay 38 Manual 087 0014D 4 2008 SCOTT Model 4600 Gas PLUS MB Transmitter HEALTH amp SAFETY Sensor Self Test Option SST Operation The Sensor Self Test SST option provides a means for automatically testing the electrochemical gas sensor This is equivalent to the traditional bump testing of a sensor Although not a calibration test it does automatically indicate when the sensor is no longer abl
59. conditions the transmitter may be programmed to output a current loop level corresponding to either a fault or inhibit state The MA F and MA I parameters found in the COMM menu determine the actual milliampere values which are output during fault and inhibit conditions respectively Testing the 4 20 mA Output COMM Menu MA t The MA t parameter is used to drive loop current to simulated alarm conditions to test a receiver device Any value between 1 00 and 20 0 mA can be programmed into the transmitter The test output will automatically shut off when exiting the menu If no keys are pressed the unit will return to run mode in two minutes Optional Alarm Relays The transmitter has 3 optional alarm relays 2 concentration alarms and 1 fault alarm Active alarms are displayed on the LCD The appearance of these alarm indicators does not imply that the associated relay is also active since the relays are inactive during inhibit When the INHIBIT indicator is visible alarm and fault conditions may be indicated but their associated relays are held in their normal states note fail safe relays will be held energized during inhibit Alarms are inhibited automatically at power on for 30 seconds and by Manual 087 0014D 4 2008 SCOTT Model 4600 Gas PLUS MB Transmitter HEALTH amp SAFETY touching the Z ESC key briefly with the magnet When the Z ESC is used alarms are inhibited for 9 minutes The period may be reprogram
60. ctory Defaults reset 62 resetting 62 Fail safe relay 34 Fault Code 65 FAULT Indicator 39 Fields controlling the 51 Flowcell using 21 FSR register 71 G Gas concentration units 1 Gas density 7 Gas interference 4 Gas number See Sensor Gas Number Gas response 4 Gas sources 7 H Hazardous conditions 35 HF Sensors 31 Inhibit 25 Installation Transmitter See Transmitter Installation Instrument Dimensions 10 Isolated Loop Power 9 Manual 087 0014D 4 2008 HEALTH amp SAFETY F J F MFG 64 Junction Box F MNt 63 Mounting 8 F PWd 62 Electrical Installation 18 F RES 62 F RNG 63 K F SCF 63 F SGC 63 no entries F SMV 63 F SP1 64 F SP2 64 L F SSN 64 Latching relay 35 F StC 63 LCD FCF 63 display 24 25 F tMR 62 LK ON 56 FtYP 63 LK PW 56 F ZMV 63 LK tM 56 F 096 64 Lock See Security Indicator Lock Menu 56 Lock On Off security 37 Lock Password 37 MA 04 33 57 MA 20 33 57 MA F 34 57 MAT 34 57 MA t 34 57 MAINT indicator 39 Master Device configuring 42 Maximum loop voltage drop 8 Maximum Wire Length 8 Methyl lodide Sensor 31 Minimum operating voltage 8 Minimum output voltage 8 Modbus Address 67 Data Access Register 67 Data Access Register Descriptions 67 data types 67 drivers 67 Function Descriptions 67 protocol 44 Register Table 75 Using 44 N Navigation instrument 24 Non Fail safe relay 36 Non Isolated Loop Power 9 Non Latching relay 35 85 Model 4600 Gas PLUS MB Transm
61. d after touching any of the 4 keys with the magnet To activate the inhibit function Manual 087 0014D 4 2008 25 Model 4600 Gas PLUS MB Transmitter SCOTT HEALTH amp SAFETY 26 place the magnet over the Z ESC key for 2 seconds then remove Observe the LCD displays INHIBIT The inhibit mode can be toggled OFF by again reapplying the magnet over the Z ESC key for 2 seconds then removing The period may be reprogrammed by changing the value of the AL IP parameter in the USER menu Calibration Frequency All GasPlus transmitters require calibration upon receipt from the factory after which the calibration interval for each transmitter should be independently established through a documented procedure which maintains a calibration log Calibration frequencies will vary depending upon individual applications Harsh environments will generally require more frequent calibration At a minimum the following calibration frequencies are recommended Zero Calibration Upon system power up or sensor installation not to exceed 30 days Oxygen Transmitter exception every 90 days Span Calibration Upon system power up unless sensor has been pre calibrated every 90 days or less Oxygen Transmitter exception every 30 days Calibration Reminder O Document your calibration schedule requirements Maintain an organized system to prevent confusion between calibrated and un calibrated senso o Properly store all spare sens
62. device is powered and connected to the bus see Electrical Installation drawings it needs to be configured for use with the master All communications parameters are contained within the COMM menu Note that these settings except for SC Ad instrument address parameter must be the same for all devices on the network including the master The table below summarizes the characteristics of each data transmission method Comparison of Data Transmission Methods 4 20mA RS 232C RS 485 Data Format Analog Digital Digital Transmission type Current loop Referred to ground Differential Max transmitting devices 1 1 32 Max receiving devices 1 1 32 Max line length n a 15m 1 000m Max transmission rate n a 38 4 kB s 90 500 kB s The number of transmitting and receiving devices on an RS 485 bus can be increased by the use of repeaters Bus Network Topology RS 485 232 Topology Because RS 485 and RS 232 transmission uses 2 wires for communications instruments using this method are 4 wire devices 2 wires for power 2 wires for communications Note that RS 485 cable such as Belden 9841 and Manhattan 3993 should be used instead of standard 18AWG instrumentation cable RS 485 limits the number of slave devices to 32 This limit is driven by power considerations and can be overcome through the use of repeaters also called extenders each of which allows another 32 devices and 1 000m to be added to the bus Modbus protocol
63. dex 84 Manual 087 0014D 4 2008 SCOTT Model 4600 Gas PLUS MB Transmitter HEALTH amp SAFETY General Instrument Overview Map Alphanumeric Display Used for displaying decimal values in the range 999 to 0 00 and 0 000 to 9999 hexadecimal values in the range 0000 to FFFF and text labels representing parameters during user setup Gas Concentration Units Parameters can be set to display gas concentration in V V PPM and PPB Security Indicator Lock Appears when software security is active prohibiting parameter editing When the security parameter is locked parameters may be reviewed but not changed Alarm Indicators Visible when alarm fault inhibit or maintenance conditions exist ALPHANUMERIC DISPLAY MAGNETIC ZERO MW SY UNEEN CALIBRATION SWITCH II VA MAGNETIC ESCAPE amp INHIBIT ENTER TOGGLE SWITCH SERIES 4600MB __ 4 GAS CONCENTRATION UNITS VIV PPM AND PPB SECURITY INDICATOR ALARM INDICATORS AL1 AL2 FAULT INHIBIT amp MAINT MAGNETIC MENU UP DOWN SWITCH Figure 1 Instrument Overview Map Manual 087 0014D 4 2008 1 Model 4600 Gas PLUS MB Transmitter SCOTT HEALTH amp SAFETY 2 Manual 087 0014D 4 2008 SCOTT Model 4600 Gas PLUS MB Transmitter HEALTH amp SAFETY
64. e and FIX DMACS In addition to the register number an application must have other information about the variables and configuration parameters it needs to access some applications may require the protocol address which is derived from the register number by subtracting 40001 Typically an application has an interface which builds a tag data base and is referred to as tagging Each record in the tag data base associates a symbolic name with information about where to find the data the slave device and register number the size of the data how many registers to access and the range of the data for run time integrity checking An example of this is shown below In addition to the above a tag record may also contain fields for proper scaling and formatting of the data Tag Name Slave Identifier Register Address Data Type Data Range symbolic name field used to identify this record name of the slave device determined by the slave address address of the first 16 bit register containing the INTEGER LONG REAL STRING etc minimum and maximum values of the data The table below illustrates a partial tag database used by Citect ADDR RAW_ZERO RAW_FULL ENG_ZERO ENG_FULL ENG_UNITS FORMAT GAS_1 REAL EIT46MB1 40019 0 100 0 0 100 0 PCT EU TEMP_1 REAL EIT46MB1 40021 0 100 0 0 100 0 DEG EU GAS_2 REAL EIT46MB2 40019 0 100 0 0 100 0 PCT EU TEMP_2 REAL EIT46MB2 40021 0
65. e user interface you may program the 4600 GasPlus MB to generate one line reports at intervals ranging from once every second to once every 2 hours 7200 seconds Alternatively you may set the instrument to transmit a report in response to a poll The format of this poll is nnn CR where is the ASCII 35 decimal and nnn is the instrument address in ASCII decimal and CR is ASCII 13 decimal carriage return Examples Poll instrument 2 002 CR Poll instrument 100 100 CR These reports contain the instrument ID 001 247 and up to 8 fields for data such as date time temperature gas concentration and alarm status Additionally the format of the 1 line report may be controlled for easy import into word processing or spreadsheet programs such as Microsoft Word and Microsoft Excel The data that is printed in each of the 8 fields is specified by selecting the appropriate field label in the RP F1 through RP F8 parameters RP parameters are found in the COMM menu In addition to controlling the fields you also have control over the delimiters appearing between the fields and the termination characters appearing at the end of the line For these strings you may specify up to 5 ASCII characters including spaces commas tabs quotes etc All you need to know are the hexadecimal ASCII codes for each character in the string If the delimiter or termination string is less than 5 characters you must enter 0 after the last cha
66. e written to IDR1 must be 20 to represent 2 0 STEP 2 The next step is to write the parameter number into the PSR Register The alarm 2 set point A2 SP parameter number is 9 as listed in the Parameter Reference Guide STEP 3 The last step is to write an appropriate command function value to the FSR Register Since the parameter data type we are attempting to write is a 16 bit integer the FSR value required is 2 see Write 16 Bit Integer Parameter The following example illustrates how this might appear in a BASIC language program MB_Write_Reg 40007 20 comment IDR1 20 since SP2_DP 1 this is 2 0 MB Write Reg 40002 9 comment PSR 9 A2 SP is parameter 2 MB Write Reg 40001 2 comment FSR 2 command to write 16 bit integer in IDR1 The decimal point register 40284 should never be written to as it is read only CAUTION Do use the Modbus Interface to change any of the alarm set reset decimal point registers This information is critical to the operation of the instrument 40002 Parameter Select Register PSR Modbus is a registered trademark of Modicon Inc 48 Manual 087 0014D 4 2008 SCOTT Model 4600 Gas PLUS MB Transmitter HEALTH amp SAFETY Report Generation This Report function would typically be accessed in the field through the RS 232 connection with the output going to a portable printer datalogger or PC Report generation is accomplished through the COMM Menu Through th
67. e 4 20 mA output by momentarily placing the magnet over the Z ESC key Observe the LCD indicates INHIBIT STEP 2 If using the hydrogen sulfide scrubber part 096 2141 ensure that it is in place STEP 3 Verify that the span gas being used has not exceeded its expiration date Expired or improperly stored calibration gases can cause inaccurate calibration A gas concentration of 50 to 90 of full scale is recommended However a minimum concentration of 15 of full scale is required STEP 4 Assemble the specific calibration kit to be used i e permeation tube device bottled gas gas generator etc and make the appropriate connections to the transmitter s calibration adaptor Attach the calibration adaptor to the transmitter s sensor assembly STEP 5 Initiate gas flow and allow the span gas to flow for approximately 5 minutes at a rate of 500 cc min NOTE When calibrating outdoors on a windy day it will be necessary to temporarily cover the holes around the circumference of the rain shield Otherwise rapid air flow caused by wind will dilute the gas standard as it enters the sensor area The holes need not be tightly sealed The transmitter should begin to respond to the calibration gas immediately The indicated gas concentration should slowly level off to a value usually close to Manual 087 0014D 4 2008 that of the span gas concentration and remain stable 29 Model 4600 Gas PLUS MB Transmitter SCOTT HEALTH amp SAF
68. e to respond to a gas leak This powerful feature provides additional confidence in your gas detection system Contact your local SCOTT Instruments representative to ascertain which sensors can be fitted with this option The controls for starting and stopping the Self Test function are found in the User Menu When the St ON control is set to OFF the sensor self test is immediately stopped and future tests are disabled until the control is set to ON or NOW This also clears the self test fault When the St ON control is set to ON the sensor self test may occur twice daily at the times specified by St t1 and St t2 The test will then be repeated at intervals from every 1 to 60 days St dt When the St ON control is set to NOW the sensor self test will occur immediately and the control will return to its previous state OFF or ON During Sensor Self Test 1 Before turning on the gas generator the instrument verifies that there are no existing sensor faults and the existing gas concentration reading is below 5 FS If the concentration is at or above 5 FS the instrument waits up to 1 hour for the concentration to subside If gas is still present after 1 hour the self test is aborted and the MAINT indicator is displayed The F MNt parameter in the factory menu will be appended with an appropriate maintenance code and will need to be set to 0 in order to eliminate the MAINT indicator Toggling power on and off to the instrument will also cl
69. e will be unusual Even if the sensor were to be exposed to a high concentration the only side effect is increased sensitivity for 3 5 days If another gas leak occurs then the sensor will simply overrespond to the gas leak which is safe sided If you have any questions please feel free to contact your local Regional Sales Manager or your inside sales support contact at Scott Health amp Safety New Mandatory Calibration Method of HF Sensors When spanning HF sensors using a surrogate gas such as HCI and Cl might be preferred by the operator When doing this keep in mind that the cross calibration factor used to adjust the span is an estimate based on the average response of several sensors The cross calibration factor recommended when using HCI an acidic gas to span Rock Span HF sensors is approximately 1 3 ppm HF ppm HCI Thus if 5 ppm HCl is used to span a 10 ppm HF sensor the span should be set to 6 5 ppm HF For conventional non Rock Solid HF sensors the cross calibration factor is 1 1 Cl an oxidizing gas may be used to span an HF sensor but it is recommended to bump test it by exposing the sensors briefly to vinegar vapors to be sure its ability to respond to the acidic HF gas has not been exhausted The calibration factor for Cl is about 2 3 ppm HF ppm Cl for Rock Solid sensors Thus when 2 ppm Cl is used to span an HF sensor the reading should be adjusted to 4 6 pom HF For conventional non Rock Solid HF sen
70. ear the maintenance code S5 on the CPU board The word SELFTEST scrolls in the display and the St ON bit in the Modbus STS status register is set to 1 throughout the test 2 Once the instrument has verified there is no gas present above 5 FS it turns on the gas generator and waits for the concentration to rise to 10 FS or more At this time a Alarms are inhibited b The current loop output is driven to the inhibit level MA I value in the COMM menu c The inhibit indicator appears in the display 3 When the measured concentration reaches 10 FS the word PASS appears in display and the instrument enters a recovery period If the sensor output fails to rise to 10 FS or more the FAULT indicator appears The test is repeated every 10 minutes until successful or until the St ON control is set to OFF or until power is switched off and back to on If the transmitter is in RUN mode a fault code scrolls in the display Touching the magnet to the S ENT key will cause the SELF TEST FAIL message to then scroll in the display The fault indication is cleared by Manual 087 0014D 4 2008 39 Model 4600 Gas PLUS MB Transmitter SCOTT HEALTH amp SAFETY a Successful completion of the next self test scheduled or manual b Changing the St ON control to OFF c Toggling power to the instrument S5 on the CPU board 4 After successfully measuring a concentration of 10 FS or more the instrument turns off the g
71. egister Sequence IDR1 new value PSR parameter FSR 2 Command 10 Alarm Test Override Turns on the alarm override mode and forces alarms to a specified state Note that the alarm relays programmed as FAIL SAFE will be energized when the alarm is OFF and de energized when the alarm is ON Alarm override mode is disabled by using command Function 11 Reset Alarms This command does not affect the RFF bit in the STS register Register sequence for forcing on off more than one alarm at a time 1 CDR1 0 7 see table below 2 PSR not used 3 FSR 10 CDR1 AL1 AL2 FAULT o oF ore OFF i on ore off gt or on of s on o on 6 or oN oN Application Note When implementing the Alarm Test command 10 be sure to include the Alarm Reset command 11 For example in a graphical user interface this might mean creating a test and reset button for each alarm i e pushing alarm 1 test button executes CDR1B0 1 FSR 10 Manual 087 0014D 4 2008 71 Model 4600 Gas PLUS MB Transmitter SCOTT HEALTH amp SAFETY 72 Command 11 Reset Alarms Turns off the alarm override mode and clears the specified latched alarms Any alarms currently forced on or off by command 10 will return to normal program control This command may also be used in normal operation to manually reset latched alarm 1 or alarm 2 but only after alarm conditions have subsided This function does not
72. electrodes will be maintained via the integral battery The battery is capable of providing up to a total of 9 months of off line power because the battery is not rechargeable off line time is cumulative providing proper storage procedures are followed When storing the sensor off line block the sensor gas hole by placing a small piece of electrical tape over the front of the sensor do not touch the membrane as this will cause damage to the sensor and store the sensor in a cool dry place a refrigerator for example Should the sensor be kept off line for a cumulative period of time exceeding 9 months the sensor will continue to operate Battery failure of the sensor does not mean the overall sensor has failed and will not operate only that it will require a 4 8 hour warm up time upon installation Once the sensor has warmed up and has become stable calibration may occur as normal An AC powered sensor keeper P N 096 2197 is available for extending the battery life of up to 10 sensors Zero Calibration The transmitter s zero function sets the loop output to 4 mA while the sensor is exposed to air which is free of the gas being detected and any interferant gases which may be present Zero Calibration Using Ambient Air Ambient air may only be used for the zeroing process if it is certain to be free of both the target gas and any possible interferant otherwise a source zero grade air should be used except when zeroing an O
73. end cap and help make your gas detection system easier to use Figure 11A Transmitter Sensor Electronics 125 Slot Recieves End Cap Pin O gt 34 Side View 1 61 1 895 Rain Shield P N 074 0305 Figure 11C 1 4 NPT x 3 16 OD Barb Fitting Calibration P N 096 Adaptor 210 101 Flowcell Order Part 096 2102 Figure 11D 5 1 8 x 3 16 OD Barbed Fittings KT Manual 087 0014D 4 2008 Rain Shield Splash Guard Part 074 0305 Provides protection from wet weather and hose downs Teflon construction permits use with both reactive such as hydrogen fluoride hydrogen chloride and ammonia and non reactive gases Lab tested hole geometry protects sensors from stray water droplets Calibration Adaptor Part 096 2101 Deliver calibration gas directly to the sensor face without dilution from environmental interferences such as wind Barb fitting provided for tube connection to the calibration gas source gas cylinder permeation device generator Duct Mount Adaptor Part 096 2118 6 8 6 to 8 Duct or 4096 2118 F Flat Duct Monitor airflow in exhaust or ventilation ducts without drying out your sensor Able to handle flow velocities from 350 to 1000 fpm Available for use on flat ducts or 6 to 8 diameter ducts custom sizes also
74. er Set delays are sometimes used to avoid nuisance trips The use of lengthy set delays is strongly discouraged Latching Non Latching and Non Fail safe Fail safe Operation The relays can be used in latching and non latching modes and can be fail safe or non fail safe In fail safe operation relays are normally energized and de energized upon alarm activation in non fail safe operation the relays are normally de energized In latching mode alarm indicators must be manually reset by touching any key with the magnet Note that alarm indicators and relays can only be reset if the measured concentration is at or below the reset point or above the reset point if programmed as a falling alarm USE ni Manual 087 0014D 4 2008 35 Model 4600 Gas PLUS MB Transmitter SCOTT HEALTH amp SAFETY important V 36 Relay NO NC Status The relay s NO or NC configuration IS SPECIFIED WHEN ORDERING THE TRANSMITTER Position describes the relay s state when it is inactivated Normally open NO relays represent a break in the circuit the circuit is completed when the relay is activated In contrast with a normally closed NC relay the circuit is broken when the relay is activated Note that a relay s position open or closed is independent of its activation mechanism energized or de energized Normally Closed Normally Open Alarm Concentration relays assume a non fail safe operation and the Fault
75. ers provide an index into an internal parameter table which describe the data type and range to the functions that control the editing of parameters These are the very same routines that control editing through the display and magnetic keys The sequence for changing a parameter value is shown below 1 Write the new value to the appropriate data register IDR1 for integers or CDR1 for characters 2 Write the parameter number to the parameter select register PSR 3 Write the appropriate function code command to the function select register FSR 4 Read the STS register to verify the RFF bit is 0 no errors 46 Manual 087 0014D 4 2008 SCOTT Model 4600 Gas PLUS MB Transmitter HEALTH amp SAFETY It is permissible to write all 3 registers at the same time however your application must ensure that the FSR is not written before the other registers have been set properly Failure to do so may result with parameters being set to unknown values resulting in a dangerous transmitter configuration i e alarm set points too high Always verify new parameter values either manually or through the Modbus interface Character data must reside in the low byte of the 16 bit register value with the upper byte all zeros Function codes are listed in Appendix 2 Example Read and Change a Parameter Value Objective Given a 10 0 PPM Chlorine Sensor 1 Read the current value of the alarm 2 set point default value 2 5 and 2 Cha
76. etailed earlier in this manual see MA 04 MA 20 Manual 087 0014D 4 2008 COIT Model 4600 Gas PLUS MB Transmitter HEALTH amp SAFETY Displayed G a A Default As Description Value FACT MENU Parameters continued Factory Maintenance Displays the current value of the system maintenance code Codes may be cleared to 0 by operator F MNt 0 No codes present 1 Calibration factor low must recalibrate to clear 2 Self test aborted due to the presense of gas Perform self test St ON NOW or reset F MNt value to 0 Varies by F ZMV Sensor Zero Millvolt Value Nominal value 250 Sensor Varies by F SCF Sensor Span Calibration Factor Nominal value 1550 Sensor Varies by F SMV Sensor Span Millivolt Value Nominal value 1800 Sensor Sensor Temperature Compensation Factor Nominal value Varies by SE Sensor Varies by Sensor N F LSd Sensor Last Span Date Nominal value Varies by F LSt Sensor Last Span Time Nominal value S ensor Varies by F SGC Sensor Span Gas Concentration Nominal value Sensor Sensor Span Termperature in 0 1 C Nominal value Varies by 250 Sensor F StC Varies by F tYP Sensor Type Model No Sensor Sensor Full Scale Range This value is used in conjunction with F dPG to specify the sensor full scale F RNG range To determine the sensor full scasle range multiply this value first by 10 then by the appropriate value sh
77. fields may cause undesirable results 9 Avoid pressure and excessive air velocity 4600 GasPlus sensors are designed to measure gas concentration under normal atmospheric conditions with up to 1 LPM air flow only true with the flowcell High air velocities will result in inaccurate measurement and reduce sensor life 10 Conduit Seals Protect the transmitter electronics from moisture by thoroughly sealing the conduit entries and tightening the cover of the transmitter housing Physical Installation and Wiring Installation of the transmitter requires the physical mounting of the enclosure see Figures 1 3 and connection of the power output lines see Figures 4 7 The transmitter enclosure is provided with bolt holes in the mounting flange for mounting Follow these steps after first ensuring that the area of installation is declassified if required STEP 1 Make all physical connections i e conduits pipes enclosure plastic spacer block junction box etc Flacein the OFF position STEP 2 Unscrew transmitter cover and turn power switch to the OFF before removing Display Ge CPU board stack Ensure position itch is i nt the OFF position anion to STEP 3 Grasp the top display board and pull outward while gently rocking it replacing board stack from top to bottom Both the top display board and the center CPU board will remove exposing the electrical connectors on the Power Manual 087 0014D 4 2008 7 Model 4600
78. ges to 000 Hold the magnet on the Up arrow key until the display changes to the stored password 000 by default and touch the S ENT key Observe the display shows SEt momentarily and the lock icon appears if enabling security or disappears if disabling security If the wrong password is entered ERR will appear on the display Changing the Password LK PW The password is located in the LOCK menu as the LK PW parameter When the system is unlocked no icon visible the password may be viewed and changed just like any other parameter However when the system is locked the password is displayed as 000 Attempting to enter a new password will result in a display of ERR instead of SEt Auto Lock Timer LK tM As an option parameter security is automatically re enabled after being toggled off by specifying a nonzero value in the LK tM parameter The value appearing in the LK tM parameter is the number of minutes 1 to 90 which the transmitter remains unlocked before automatically re locking itself the feature is disabled when LK tM 0 The time out period begins at the moment the transmitter is unlocked and will re lock only after the period has expired and the mode has returned to RUN mode the transmitter will not self lock during parameter editing Note that the instrument always returns to RUN mode if no keys have been activated for 2 minutes Additionally if the transmitter experiences a hardware reset i e power cycle w
79. ike a refrigerator Should the sensor be kept off line for a cumulative period of time exceeding 9 months the sensor will continue to operate Sensor battery failure does not mean the sensor has failed and will not operate only that it will require a 4 8 hour warm up time upon installation Once the sensor has warmed up and has become stable calibration may occur as normal Gas Specificity Each gas sensor is engineered and designed to be gas specific however the very nature of electrochemical gas detection is such that the presence of certain gases may act as an interferant to certain sensors Each sensor can have its own interferant s causing the sensor to respond electrochemically Scott Health amp Safety has tested and documented some of the known interferant These values represent averages and will vary from sensor to sensor for a specific gas sensor These are listed in an addendum located in the back of the manual Sensor Accuracy The accuracy of a toxic gas sensing system is limited by the accuracy of the standard used to calibrate the system For many toxic gases obtaining a high accuracy standard that is suitable for field calibration use may be difficult about the best accuracy of gas concentration achievable is 5 using a permeation system with good temperature control For this reason no fixed accuracy statement is possible The accuracy of the sensor cannot be better than the accuracy of the calibration gas
80. ill not occur at this time if a self test is already in progress Set equal to the St t2 time if only one self test is desired Sensor Self Test Time of Day 2 applies to instruments with the sensor self test option Specifies the time of day hh mm when a sensor self test sequence will occur This St t2 date may be before after or equal to the 00 00 23 59 St t1 time Note that the self test will not occur at this time if a self test is already in progress Set equal to the St t1 time if only one self test is desired Sensor Self Test Gas Exposure Time applies to instruments with the sensor self S test option Specifies the maximum amount t Gt e i of time in seconds which gas will be delivered to the sensor in order to achieve a 10 full scale reading Sensor Self Test Recovery Time applies to instruments with the sensor self test s option Specifies the maximum amount of t Rt 8 3 time in seconds which the instrument will wait for readings to fall to 5 of full scale after the test is completed Manual 087 0014D 4 2008 55 N O N O Model 4600 Gas PLUS MB Transmitter SCOTT HEALTH amp SAFETY 56 The LOCK Menu Accesses the transmitter s security features LOCK MENU Na SW Description Lock On Off Password Entry Reguired Entering the current password in this field toggles the lock status from On to Off or from Off to On The LCD lock icon is visible to indicate the transmitter
81. ith a nonzero value programmed in the LK tM parameter it will immediately enable the security Manual 087 0014D 4 2008 37 Model 4600 Gas PLUS MB Transmitter SCOTT HEALTH amp SAFETY Instrument Parameter Change Example The example below will permit you to practice using the interface while actually setting the alarm 1 parameters 1 With the instrument in RUN mode place the magnet on the Up arrow key and observe USER in the display This is the user menu selection Remove the magnet before the next selection scrolls into the display If another selection does scroll in repeat touching the Up arrow key until USER is finally displayed 2 Place the magnet on the S ENT key and observe A1 SP on the display This is the alarm 1 set point selection Remove the magnet 3 Place the magnet on the S ENT key again and observe 25 00 this may be different if already reprogrammed from the factory value Remove the magnet 4 Hold the magnet over the Down arrow key to decrement the value or the Up arrow key to increment the value as desired When the desired value is displayed remove the magnet 5 To save the new value place the magnet over the S ENT key and observe SEt in the display The new value is saved in user parameter memory and the user parameter checksums are updated If a parameter memory error is detected while saving the new value ERR will be displayed and the appropriate fault
82. itter SCOTT 86 HEALTH amp SAFETY O S Orientation transmitter 7 SC P 61 Output SC RS 61 inhibiting 25 SC Rt 61 P SC Sb 61 SC VF 61 Parity Checking 61 Security indicator 1 Selecting gas type 5 Q Sensor HF 31 dee Methyl lodide 31 R Sensor Parameters Concentration Units 64 Rain shield 5 Damping Constant 55 Real Time Clock Decimal Precision 63 Date 59 SerialNumber 64 Hour 59 Temperature 63 Year 59 Temperature Units 55 registers Modbus 67 Type 63 Report Delimiter String 58 Sensor Self Test 39 Report Fields 59 operation 39 Report Line Termination String 58 Serial Communication Report On Off 58 Address 60 Report Period 58 Baud Rate 60 Reset Delay 34 Data Length 60 RP d1 RP d5 58 Idle 60 RP E1 RP E5 58 Listen Only 60 RP F1 RP F8 59 Mode 60 RP ON 58 Options 61 RP Pd 58 Parity Checking 61 RS 232 42 Retries 61 Connections 19 RS 232 485 Selection 61 setting up 43 Stop Bits 61 wiring 16 Verify 61 RS 485 42 Serial Communications 41 Connections 19 setting up 43 RS 485 selection 42 RS 232 selection 42 Rt dt 59 Rt YR 59 Rt tM 59 RUN Mode 24 S SC Ad 60 SC bR 60 SC dL 60 SC ld 60 SC LO 60 SC Md 60 SC OP 60 setting up 42 Set Delay 35 See also A1 Sd or A2 Sd Software Version 64 Span Calibration 29 SR dC 55 SR tC 55 SR tF 55 St ON 55 St dt 55 St t1 55 St t2 55 St Gt 55 St Rt 55 Stop Bits 61 SW ID 64 Manual 087 0014D 4 2008 SCOTT Model 4600 Gas PLUS MB Transmitter HEALTH amp SAFETY
83. l life remaining it is recommended that sensors be replaced at a convenient interval between 12 and 18 months Experience in a given application or plant condition will determine the best replacement frequency Environmental Influences to the Sensor Although the 4600 GasPlus MB transmitter is designed to operate at temperatures from 40 to 149 F 40 to 65 C the operating temperature is dictated by which gas sensor has been installed The Gas Detection Capabilities sheet see back of manual shows the operating temperature ranges for each sensor type Extreme temperatures and exposure to dirty atmospheres containing particulate matter or oily vapors can effect sensor response and decrease sensor life Humidity RH has the potential to affect the performance of electrochemical sensors Gas sensors are designed to provide stable output over a range of humidity conditions Intermediate exposure to relative humidity conditions from 0 to 99 non condensing RH 70 RH nominal will not affect operation of most sensors Extremely dry air has the potential to adversely affect the operation of electrochemical sensors At relative humidities continuously below 25 sensors can exhibit an early loss of sensitivity after a few days to a week of operation This is caused by a slow loss of water from the internal sensor electrolyte Suspending the sensor over a jar of water for 24 hours will usually restore sensitivity The operation of H S
84. limits the number of slave devices to 247 Manual 087 0014D 4 2008 43 Model 4600 Gas PLUS MB Transmitter SCOTT HEALTH amp SAFETY 44 Modbus RTU Protocol Modbus RTU protocol is a binary master slave protocol that can support the transfer of data between a master and up to 247 slaves The master initiates every message with a query directed at a particular slave and looks for a response from only that slave The master can also broadcast a message to all slaves in which case it does not expect any response The format of the query and the response are very similar and end with 2 CRC bytes Although the master and slave cannot correct data errors the CRC bytes provide a high level error detection The Modbus protocol also defines appropriate responses when errors are detected MODBUS Communications IN Device Address Device Address Function Code Function Code Data Data Computer PLC seplwsueuj 391190 Error Check Error Check i I PA E Query and response messages start and end with a silent interval of at least 3 5 character times The entire message must be transmitted as a continuous byte stream If a silent interval of more 1 5 characters occurs before completion of the message the receiving device flushes the incomplete message and waits for the next message Similarly if a new message occurs earlier than 3 5 charac
85. med by changing the value ofthe AL IP parameter in the USER menu Changing Alarm Set Up Parameters Using the magnet access the USER menu and select the desired alarm parameter Use the Up or Down arrow keys to increment or decrement the value then touch the magnet to the S ENT key to store the reading observe SEt on the display orthe Z ESC key to abort Use the Z ESC key to return to the RUN mode Set Points and Reset Points The transmitter has two concentration alarms that may be programmed as either a rising or falling alarm Rising Alarm Set point is at or above reset point The alarm activates when the gas concentration rises to the set point value The alarm deactivates when the gas concentration falls to the reset point value Falling Alarm Set point is below reset point The alarm activates when the gas concentration falls to the set point value The alarm deactivates when the gas concentration rises to the reset point value Set and Reset Delays A set delay prevents an alarm from activating until the alarm condition has been above the setpoint for a certain amount oftime A reset delay prevents a H non latching alarm from deactivating until the alarm condition has been below the reset point for a certain amount of time VN Reset delays are often used to control ventilation fans i e the fans are kept on past the danger point to ensure that the hazardous condition is absent throughout the area and not just around the transmitt
86. n current output occurs The current output is measured amplified then converted by the transmitter to a signal on the 4 20 mA loop where it is used to read gas concentration The Sensor and Battery Each smart sensor contains circuitry with an EEPROM and lithium battery The EEPROM retains specific sensor data including gas measuring range alarm setpoints and sensor useful life value When connected to the transmitter the sensor data is uploaded to the transmitter Upon disconnection of OT FISSE ASS the sensor from the transmitter assembly the bias NE XXXNXXXXXX X potential reguired by electrochemical sensors across the sensor s electrodes will be maintained via the integral battery The battery is capable of as flows through permeable membrane providing up to a total of 9 months of off line power to contact electrode Manual 087 0014D 4 2008 3 Model 4600 Gas PLUS MB Transmitter SCOTT Sensor battery failure does not render the sensor useless but it will require a 4 8 hour warm up time upon installation HEALTH amp SAFETY because the battery is not rechargeable off line time is cumulative providing proper storage procedures are followed When storing the sensor off line block the sensor gas hole by placing a small piece of electrical tape over the front of the sensor do not touch the membrane as this will cause damage to the sensor and store the sensor in a cool dry place l
87. nction fail indicator 0 success 1 failure BIT 13 ALO Alarm override status 0 normal 1 alarms overridden for test BIT 14 LPO Loop override status O normal 1 loop overridden for cal test BIT 15 STON Sensor self test status O inactive 1 self test in progress 40024 UNSIGNED INTEGER GFS Description General fault status Range 0 to 65535 High Byte STON LPO ALO RFF LCK U2 U1 UO Low Byte IHB MNT ALF AL2 AL2 RLF RL2 RL1 BITO ROM ROM fault BIT1 RAM RAM fault BIT2 UMEM User memory checksum fault BIT3 FMEM Factory memory checksum fault BIT4 EMEM External sensor shadow memory checksum fault Manual 087 0014D 4 2008 SCHIT HEALTH amp SAFETY Model 4600 Gas PLUS MB Transmitter REGISTER ADDRESS BIT 5 BIT 6 BIT 7 BIT 8 BIT 9 BIT 10 BIT 11 BIT 12 BIT 13 BIT 14 BIT 15 40025 High Byte status Low Byte status BIT 0 BIT 1 BIT 2 BIT 3 BIT 4 BIT 5 7 BIT 8 BIT 9 BIT 10 15 40027 Manual 087 0014D 4 2008 DESCRIPTION SUGGESTED TAG PWR LCD IHB EE24 LOOP SPI EE12 SNSR NEG OVR Low voltage fault LCD 12C bus fault Clock 12C bus fault External sensor 12C bus fault Current loop open circuit fault Serial peripheral interface bus fault On chip EEPROM memory fault Sensor fault detected see SFS below Concentration below negative drift limit Not used Alarm or loop override detected see STS above UNSIGNED INTEGER SFS Description Sensor status and fault
88. nge the alarm 2 set point value from the current value to 2 0 How to Read the Current Value of the Alarm 2 Set Point The alarm 2 set point is read as 2 16 bit registers at 40283 and 40284 The first register is a signed 16 bit integer representing the numeric digits of the value The second register is a READ ONLY value representing the number of digits to the right of the decimal point 0 1 2 or 3 never attempt to change any of the decimal point registers If we tag name the first register as SP1 40283 and tag the second register as SP1_DP 40284 we can convert the alarm 2 set point to a real value The following is an example written in BASIC which converts the alarm 2 set point integer value into a single precision value Note that some SCADA and MMI languages mimic the BASIC programming language The principal difference is that SCADA MMI programs maintain a tag database which permit you to reference Modbus registers using a tag name such as SP2 BASIC language algorithm to convert SP2 from INTEGER to SINGLE Two library functions are assumed to exist that read and write transmitter registers using Modbus protocol Their implementation is beyond the scope of this manual DIM SP2 AS INTEGER DIM SP2_DP AS INTEGER DIM SP2_REAL AS SINGLE SP2 MB_Read_Reg 40283 SP2 DP MB Read Reg 40284 SELECT CASE SP2 DP CASE 0 SP2 REAL SP2 CASE 1 SP2 REAL SP2 0 1 CASE 2 SP2 REAL SP2 0 01 CASE 3 SP2 REAL SP2 0 001
89. nties including without limiting the generality of the foregoing warranties of merchantability and fitness for a particular purpose guarantees obligations or liabilities expressed or implied by the seller or its representatives and by the statute or rule of law This warranty is void if the instrument has been subject to misuse or abuse or has not been operated in accordance with instructions or if the serial number has been removed SCOTT HEALTH amp SAFETY MAKES NO OTHER WARRANTY EXPRESSED OR IMPLIED EXCEPT AS STATED ABOVE Statement of Year 2000 Compliance The Model 4600 GasPlus MB accepts all dates in the years after 1999 as valid dates Its functionality performance and accuracy will not be affected as a result of the run date or the dates being processed irrespective of the century When maintenance is performed on the product and or the product is restarted after power has been removed the system dates will remain correct to the actual date even if this date is on or later than the 1 January 2000 Caution This instrument stores its year data as a value from 00 to 99 2 digits It is recommended that this data is not accessed via the digital interface Manual 087 0014D 4 2008 79 Model 4600 Gas PLUS MB Transmitter Sensors Ammonia NH Model 85 8 Digit Prefix Suffix 096 1965 XXXX 0050 0100 0150 0250 0500 Arsine AsH Model 65 8 Digit Prefix Suffix 096 1953 XXXX
90. om RUN mode STEP 1 Touch the magnet to the Up arrow key and observe USER in the display STEP 2 Touch the magnet to the Up arrow key until COMM appears in the display STEP 3 Touch the magnet to the S ENT key and observe MA 04 in the display STEP 4 Touch the magnet to the S ENT key and observe the DAC value in hexadecimal corresponding to an output current of 4 00 mA NOTE Since the current loop has already been calibrated at the factory this value will be different than the default value Hold the magnet on the Up arrow key to increase the current loop output or the Down arrow key to decrease until the receiver indicates exactly 4 00 mA Touch the magnet to the S ENT key and observe SEt on the display When finished or if no changes are required touch the magnet to the Z ESC key to return to the MA 04 display STEP 5 Touch the magnet to the Up arrow key and observe the display changes to MA 20 STEP 6 Touch the magnet to the S ENT key and observe the DAC value in hexadecimal corresponding to an output current of 20 0 mA Hold the magnet over either the Up or Down arrow keys until the receiver indicates it is receiving exactly 20 0 mA then touch the magnet to the S ENT key and observe SEt on the display When finished or if no changes are required touch the magnet to the Z ESC key 3 times to return to RUN mode Setting Loop Fault and Inhibit Levels COMM Menu MA E and MAI To indicate abnormal
91. ors Contact the sales or service departments at the factory to learn more about the CAL PLUS calibration service Manual 087 0014D 4 2008 SCHIT HEALTH amp SAFETY Model 4600 Gas PLUS MB Transmitter Optional Flowcell Calibration Required Calibration Equipment M Calibration adaptor M Gas compatible tubing Teflon recommended for acid gases HF HCL etc 500 cc min flow regulator Calibration gas Zero air Nitrogen for Oxygen Sensor Adaptor Tygon Tubing Teflon Tubing 500 cc J N NOTE When using the calibration kit for NH HCI or CL Regu lated Tygon tubing must be installed Flow e g on the barbed fitting The Teflon tubing then slides into the Tygon Span or Zero Gas Source Figure 12 Calibration Equipment Remote Sensor Calibration The 4600 GasPlus MB transmitter is designed so that the sensor may be removed and calibrated at a remote location Fixed gas detection installations using this feature should utilize a documented calibration log see Calibration Frequency to determine sensor rotation schedules In addition spare sensor s will be required so that continuous monitoring of the detection point is assured and a spare powered transmitter will be required to conduct the calibration at a remote site Prevent accidental installation of uncalibrated sensors by marking all calibrated sensors with their las
92. own for F dPG Varies by Sensor Sensor Decimal Point in Gas Reading Used to scaling the gas concentration reading alarm set reset points negative drift limit and span concentration during calibration F dPG multiply by 0 1 0 1 0 1 2 0 01 3 0 001 Varies by FARG Sensor Manual 087 0014D 4 2008 63 Model 4600 Gas PLUS MB Transmitter SCOTT HEALTH amp SAFETY Displayed WS n Default As Description Value FACT MENU Parameters continued Sensor Gas Concentration Units ASCII character code in hexadecimal corresponding to the gas units of measure Varies by BPM add 42 hex 4d hex Sensor PPB 42 PCT 43 Sensor Default Set Point 1 Value low alarm This value is used in conjunction with F dPG to specify the set di Varies by point 1 value low priority alarm To determine the exact 1 9999 Sensor value multiply by the appropriate scaler shown for F dPG Do not attempt to change this value Sensor Default Set Point 2 Value high alarm This value is used in conjunction with F dPG to specify the set i A Ee A Varies by point 2 value high priority alarm To determine the exact 1 9999 Sensor value multiply by the appropriate scaler shown for F dPG Do not attempt to change this value Sensor Manufacturing Code For internal use by factory EN 9999 varies by Sensor ES 9999 Varies by Sensor ES 9999 Varies by Sensor Sensor Serial Number For internal use by factory
93. perating mode is referred to as RUN mode The transmitter will always return to RUN mode if no keys have been activated for 2 minutes In RUN mode the LCD s alphanumeric display will show the ambient gas concentrations or a fault code if a problem exists with the instrument How to Adjust Transmitter Parameters Parameters are located in 5 main menu groups e USER Alarm and Sensor Parameters e LOCK Security e COMM Communications e FACT Factory e HELP Scrolling help message on each parameter 24 Manual 087 0014D 4 2008 SCOTT Model 4600 Gas PLUS MB Transmitter HEALTH amp SAFETY From RUN mode the user can access the menus by touching the magnet to the A Up or W Down arrow key then selecting the S ENT key The Z ESC key is used to back out of the menu and return to RUN mode The instrument continues to sense gas and transmit a signal when it is not in RUN mode Each menu contains a set of logically grouped parameters After a menu has been selected the first parameter in the menu is displayed on the LCD For example if the USER menu is selected A1 SP alarm setpoint 1 will be shown on the display The user can scroll through the parameter list by touching the magnet to either the Up or Down arrow keys STEP 1 W A Scroll through menus Access the selected menu STEP 2 Scroll through the menu s Q U I C K I parameters N TO G LAN C E T o STEP
94. r dirt buildup or condensation on the membrane Both can cause slower than normal operation If an excessive dirt buildup is present the sensor is generally not repairable If there is excessive moisture present the sensor may be removed to a dry area and permitted to dry Under such conditions the cause of the excessive moisture should be determined and prevented condensing humidity hose downs etc Refer to the appendix for alternative methods of generating operational check gases Adjusting the Loop Output Parameters Adjusting the 4 20 mA Output COMM Menu MA 04 and MA 20 Once the transmitter is installed and wired to the current loop the 4 20 mA levels may be adjusted through the user interface to overcome line or receiver resistance problems In addition the current loop may be forced to a level between 1 00 and 20 0 mA for purposes of testing alarms back at the receiver In order to perform this adjustment you must be able to monitor the current loop atthe receiving device 1 This adjustment requires the loop current to be monitored at the receiving device Refer to the electrical connections drawings in the installation section of this manual 2 To prevent false alarms at the receiver set the receiver channel to alarm inhibit prior to making these adjustments Manual 087 0014D 4 2008 33 Model 4600 Gas PLUS MB Transmitter SCOTT HEALTH amp SAFETY USER a 34 To adjust the 4 and 20 mA output fr
95. racter Characters appearing after the 0 will be ignored An example of the default report format is shown ID Date lime N Conc Satus End of line 001 9 23 97 14 30 05 76 0 0 01 0A04 ID S F2 F3 F4 F5 F6 RP F1 Mdy RP F2 t24h RP F3 dEGF RP F4 Conc RP F5 Stat RP F6 EOL The report consists of the ID date time temperature in Fahrenheit gas concentration and the alarm relay status The delimiter string is a single space which is defined as hexadecimal 20 decimal 32 and the termination string is the carriage return and line feed characters represented as hexadecimal Od decimal 13 and hexadecimal OA decimal 10 respectively Manual 087 0014D 4 2008 49 Model 4600 Gas PLUS MB Transmitter SCHIT HEALTH amp SAFETY 50 Manual 087 0014D 4 2008 SCOTT HEALTH amp SAFETY Manual 087 0014D 4 2008 Model 4600 Gas PLUS MB Transmitter Parameter Reference 51 Model 4600 Gas PLUS MB Transmitter Menus Alarm and Sensor Parameters Adjusts alarm setpoints relay operation and various sensor parameters such as gas type and display engineering units Alarm Parameters A1 SP A2 Sd A1 RP A2 Rd A1 Sd A2 OP A1 Rd AF NL A1 0P AF OP A2 SP AL IP A2 RP AL tO Sensor Parameters SR dC St t1 SR tC St t2 SR tF St Gt St ON St Rt St dt Lock Functions Used to secure system parameters from tampering LK ON LK PW LK tM Communications Functions
96. relay assumes fail safe operation Changing these modes will reverse the normally open normally closed status Damping Time Constant The SR dC parameter sets the time constant of the digital lag filter which the software uses to smooth variations of the input signal The parameter value specifies the number of seconds required to reach 63 of its final value Multiplying the SR dC value to 3 3 time constants will result in the number of seconds required to reach 95 of final value Manual 087 0014D 4 2008 SCOTT HEALTH amp SAFETY Model 4600 Gas PLUS MB Transmitter Transmitter Security LOCK 8 ow Transmitter password protection is accessed through the LOCK Menu The 4600 Gas Plus MB transmitter employs password protection as means of prohibiting unauthorized access to calibrations and critical parameter settings When the lock is enabled lock icon appears on display parameters may be viewed but not changed until the lock is disabled no icon visible The lock is toggled on and off by simply entering the password at the LK ON parameter default 000 This 3 digit password may be changed via the LK PW field Once unlocked the transmitter may be programmed to re lock itself automatically after a specified period Toggling Parameter Security On Off LK ON To toggle the state of the lock scroll to the LK ON parameter in the LOCK Menu and touch the magnet to the S ENT key Observe the display chan
97. rogrammed time intervals The content of the report line is configurable i e each field may specify date time temperature concentration alarm status or even specify a blank field for formatting a report for import into a spreadsheet Aside from parity and framing errors ASCII protocol does not explicitly provide a means for verifying transmitted message data The composition of this report is detailed in the Report Generation section later in this manual The second protocol is Modbus RTU in which a master device transmits queries to the slave transmitter and reads back response messages In addition to framing and parity errors Modbus RTU protocol appends 2 Cyclic Redundancy Check CRC bytes on the end of each message These 2 bytes are generated from the value and order of bits in the message and provide a high degree of data integrity Note that the transmitter does not support the Modbus ASCII protocol Each protocol is capable of using either the RS 232 or RS 485 electrical interface The RS 232 interface is designed for connecting only 2 devices over relatively short distances less than 50 feet at 9600 baud This might be used for transmitting timed ASCII reports to a serial printer or computer with a built in RS 232 port The RS 485 interface is used for connecting a multi drop network of up to 31 devices using Modbus protocol Since RS 485 is transmitted differentially each bit is determined by the differential voltage
98. s UINT 4029910 bb jo 13 2 AL2 Options 0 None 1 Failsafe 2 Latching 3 Both AF Op almF opis UINT 403000 Io Ion 15 2 FAULT Options 0 None 1 Failsafe 2 Latching 3 Both Used during parameter update only Organized for efficient block read read only Manual 087 0014D 4 2008 75 Model 4600 Gas PLUS MB Transmitter SCOTT HEALTH amp SAFETY Label Suggested Tag Type Reg Min Max D reg PSR FSR Comments Serial Comm Baud SC BD comm_baud UINT 40302 10 idr1 2 10 38 4k 9 19 2k 8 14 4k 7 9600 0 110 SCD comm data JUINT 40303jo 1 e 61 deng Comm DataLength 0 7 1 8 Sc D comm ge ut 4030sj0 9999 Jo 62 2 Serial Comm Number of idles Between Messages SC LO comm iisten ut 40306j0 bh o es eng Comm Listen Only O Listen and Talk 1 Listen Only Isc MD comm mode UINT 40307 0 Jl Ion 64 2 Serial Comm Mode 0 None 1 ASCII 2 Modbus RTU SC OP comm opis ur 40308jo s e 65 d se Definitions Above sc P_ comm _parity JUINT 40309j0 Je ia eef 2lseriatCommPariy 0 None 1 Even 2 04d SC RS comm ea ur 40310jo 2 e Tel 2lseriatCommintertace 0 RS 2921 RS 485_____ SC RT comm retries ut 40311j0 9999 lid 68 2 Serial Comm Printer Busy Reties C SB comm stop ut 4031241 2 Jo Le 2 Serial Comm NumberotStopBis C VF comm verity uint aoaisjo Jon 70 Zeg Comm Verify 0 No LRC CRC Verification 1 Normal Field 1 0 SKIP 1 MD 2 MDY 3 D
99. s Range 0 to 512 0 0 0 0 SENLO SENHI TEMPLO TMPHI STF NEW LOOP 0 0 0 0 NEW SCFLO 0 STF TMPHI TMPLO SENHI SENLO Sensor signal input below 0 012v Sensor signal input above 2 488v Temperature signal input too low Temperature signal input too high Self test failed to produce a sufficient signal input Not used always 0 New sensor detected cleared automatically not a fault Span calibration factor low sets MAINT indicator not a fault Not used always 0 UNSIGNED INTEGER Lp PWM Description 16 bit value representing PWM drive to loop circuit Approximate calibration is 65535 counts 24mA 69 Model 4600 Gas PLUS MB Transmitter SCHIT HEALTH amp SAFETY 70 Manual 087 0014D 4 2008 SCOTT Model 4600 Gas PLUS MB Transmitter HEALTH amp SAFETY Appendix 2 FSR Command Functions Command functions are required whenever a value is to be written to the instrument All command values are direct to the Function Select Register FSR located in address 40001 The FSR register recognizes 11 commands Command 1 Write 8 Bit byte parameter Validates and writes 8 bit byte parameters into nonvolatile parameter memory Updates the RFF bit in the STS register Sequence CDR1 new value PSR parameter FSR 1 Command 2 Write 16 Bit integer parameter Validates and writes 16 bit integer parameters into nonvolatile parameter memory Updates the RFF bit in the STS r
100. s exceeded the transmitter will not operate To determine the maximum loop voltage drop subtract the transmitter s minimum operating voltage 18 VDC from the power supply s minimum output voltage For example if the power supply s minimum output voltage is 24 VDC then the maximum voltage drop across the power supply is 6 volts To determine actual maximum wire length divide the maximum allowable voltage drop by the transmitter s maximum current draw then by the resistance of the wire ohms foot then divide by 2 Stand Alone 24 VDC Power Supply VMIN Source Voltage 24 VDC VMIN Transmitter Minimum Operating Voltage Power Supply Voltage 18 VDC Max allowable volt drop MAV 50 mA w relays 100 mA w o relays 24 Ohms IMAX Transitter MAV Max Current draw RMAX of Wire Ohms per ft Wire Ohms ft 18 AWG 0 00639 Ohm ft 20 AWG 0 01015 Ohm ft 22 AWG 0 01614 Ohm ft Max Length Ft M 1878 572 1182 360 Max Wire Length 743 227 2 Switches and Circuit Breakers UL and EN Requirements EN 61010 1 1995 edition and UL 3111 1 1994 edition Safety Requirements for Electrical Equipment for Measurement Control and Laboratory Use Part 1 General Requirements contain the following requirement 8 Manual 087 0014D 4 2008 SCOTT Model 4600 Gas PLUS MB Transmitter HEALTH amp SAFETY Except as specified in 6 12 1 1 equipment shall be provided wi
101. s no longer visible NOTE The transmitter will automatically return to run mode about 9 minutes after the last adjustment After calibration is complete disconnect the calibration system The unit should now be operating properly and displaying the current gas concentration Using A Permeation Tube Device When using a permeation tube device during a calibration session it is recommended that constant flow of zero air be established for at least 10 minutes before being hooked up to the calibration adaptor on the sensor This ensures that any analyte gas which may have been present from a previous span calibration is flushed from the tubing and adaptor Optional Sensor Functional Test Transmitters are designed to operate in many different environments In some extreme conditions the sensor may become unresponsive to the target gas due to continuous or excessive exposure to dust or dirt on the membrane or very high low humidity conditions To ensure a unit continues to function a sensor test should be considered Functional tests can be conducted by exposing the sensor to the target gas Follow all necessary safety precautions while conducting this test The frequency and necessity of this check is dependent upon the specific characteristics of the site in which the sensor is located and should be determined by the user Manual 087 0014D 4 2008 SCOTT Model 4600 Gas PLUS MB Transmitter HEALTH amp SAFETY Important Notes on
102. sors the value is 2 5 1 Therefore 2 ppm Cl applied to a conventional HF sensor should be spanned to 5 ppm Manual 087 0014D 4 2008 31 Model 4600 Gas PLUS MB Transmitter SCOTT HEALTH amp SAFETY I Using a gas generator STEP 1 Attach the delivery tube from the generator to a calibration adapter Use the delivery tube supplied by the manufacturer or a length of Teflon or Tygon clad Teflon Do not apply to sensor at this time STEP 2 Start the generator being sure the flow rate is set to 0 5 Ipm and the gas concentration is set to the desired value STEP 3 Allow the gas to flow through the delivery tube and calibration adapter to let them equilibrate with the gas before connecting to the sensor Depending on the local environment this may take 5 to 15 minutes or longer STEP 4 While waiting check the sensor zero reading and zero it if necessary STEP 5 After sufficient time has passed for the gas delivery tube and calibration adapter to equilibrate with the gas flowing through them attach the calibration adapter to the 4600 sensor end cap remove the rain shield first if there is one STEP 6 After five minutes adjust the span to agree with the concentration of gas coming after the generator STEP 7 Remove the calibration adapter and re install the rain shield if necessary Note Some generators don t have air pumps with enough power to overcome the pressure drop of the porous diffuser plug
103. sten Only Setting this parameter to 1 forces the transmitter to listen for and process Modbus queries including SC LO broadcast but without generating a response OFF listen and respond ON listen only This parameter should normally be set to 0 Serial Communication Mode This parameter specifies which communication protocol to use SC Md NONE None ASC ASCII Report Generator MB Modbus RTU 60 Manual 087 0014D 4 2008 SCOTT Model 4600 Gas PLUS MB Transmitter HEALTH amp SAFETY Displayed ey i Default As Description Value COMM MENU Serial Communication con t Serial Communication Options Only used in ASCII mode over RS 232 interface this parameter controls whether the transmitter echoes every character sent and if it expands outbound carriage returns to carriage return line feed SC Md ASC SC RS 232 NONE no echo no CR expansion ECHO echo no CR expansion CRLF no echo expand CR to CR LF BOTH echo expand CR to CR LF SC OP Serial Communication Parity Checking Specifies whether parity checking is performed and generated NONE None ODD Odd Parity EVEN Even Parity SC P Serial Communication RS 232 485 Selection Specifies either RS 232 or RS 485 communication When choosing RS 232 verify the jumpers at JP1 on the power supply board are cut and jumpered as SC RS shownin the electrical connections Since RS 485 is the default no modifications
104. t calibration date or maintain them in an otherwise appropriate manner To remove and replace the 4600 GasPlus sensor STEP 1 Inhibit the transmitter alarms and 4 20 mA output by momentarily placing the magnet over the Z ESC key Observe the LCD indicates INHIBIT STEP 2 Unscrew the sensor end cap and remove the sensor requiring calibration Note that the fault alarm relay is unaffected and the current loop output remains at the programmed inhibit level Manual 087 0014D 4 2008 27 Model 4600 Gas PLUS MB Transmitter SCOTT HEALTH amp SAFETY IMPORTANT If using the transmitter with an Scott Health amp Safety Hydrogen Sulfide Scrubber P N 096 2141 the scrubber MUST be in place prior to calibration 28 STEP 3 Replace the sensor with a pre calibrated sensor and reinstall the sensor end cap Ensure proper electrical connection between the sensor and the transmitter has been made the fault indicator will disappear STEP 4 Take the transmitter out of inhibit mode by momentarily placing the magnet over the Z ESC key Observe the LCD turns off the INHIBIT indicator The transmitter is now active Storing Sensors Proper storage of the pre calibrated sensor is critical to ensure long term functionality ofthe spare sensor It is important to remember that upon disconnection of the sensor from the transmitter assembly the bias potential required by electrochemical sensors across the sensor s
105. ter times following a previous message the receiving device will consider it a continuation of the previous message and a CRC error will be generated The device address field appears in both the query and the response messages Valid device addresses are limited to the range of 1 247 The function field also appears in both the query and response messages The function field specifies whether the master is reading or writing data to the slave The function field also specifies whether the data is addressed as a single register or a block of registers The 4600 Gas Plus MB transmitter supports Functions 1 8 and 15 19 which is the same as the Modicon 884 controller Transmitter data is organized into 16 bit registers numbered 40001 to 49999 and addressed at the protocol level as 0000 to 9998 Variables and configuration parameters are permanently mapped to these registers and may occupy 1 or more according to their data type A complete register map follows in Appendix 1 at the rear of this manual More information on Modbus protocol may be obtained from Modicon Inc Manual 087 0014D 4 2008 SCOTT HEALTH amp SAFETY Model 4600 Gas PLUS MB Transmitter Modbus Applications Modbus application programs applications usually run on a DCS Distributed Control System PLC Programmable Logic Controller or industrial computer Examples of applications running on industrial computers include Citect Wonderwar
106. th a means for disconnecting it from each operating energy supply source whether external or internal to the equipment The disconnecting means shall disconnect all current carrying conductors For the transmitter to comply with EN 61010 1 1995 edition and UL 3111 1 1994 edition 1 A switch or circuit breaker must be included in the 4600 GasPlus MB installation 2 The switch or circuit breaker must be in close proximity to the equipment and within easy reach of the operator and 3 The switch or circuit breaker must be marked as the disconnecting device for the transmitter Current Sourcing and Sinking Modes The transmitter may be wired in a current sourcing or a current sinking mode As the names suggest these 2 modes describe the direction of current flow in the 4 20 mA loop connecting the 4600 MB transmitter and its receiver Principally this is dictated by which end of the loop is connected to the positive supply voltage the source Current sourcing mode When the transmitter is wired in current sourcing mode a positive voltage supply is connected to the transmitter s mA terminal TB1 3 Note that this may be the same supply powering the instrument or a different one see Isolated and Non Isolated Loop Power Current flows into the mA terminal TB1 3 and out of the mA terminal TB1 4 controlled by the virtual resistance of the instrument From the transmitter s mA terminal TB1 4 current flows into the receiver s
107. to JP1 are reguired 232 RS 232 Non isolated 485 RS 485 Non isolated 485 1 RS 485 Isolated currently not available Serial Communication Retries This parameter SERI is not currently used Serial Communication Stop Bits Specifies either SC Sb 1 or 2 stop bits 1 1 bit 2 2 bits Serial Communication Verify When set to ON SC VF OFF turns off CRC checking in Modbus RTU protocol Manual 087 0014D 4 2008 61 Model 4600 Gas PLUS MB Transmitter SCOTT HEALTH amp SAFETY The FACT Menu Displayed As FACT parameters are rarely used under field conditions Typically these parameters are only used for troubleshooting and service issues Description Default i Value Min Max Factory Password Entry Certain functions and parameters contained in the FACT menu are protected by a factory security password under the F PWD Each time the factory password is entered security is disabled for period of 100 minutes 6000 seconds Repeating the entry of the factory password will restart the timer at 100 minutes During this time the functions parameters may be executed updated When the timer expires at zero attempting to enter execute or modify values will result in a display of ERR Normal user security must be disabled before the factory pasword is accepted Enabling or disabling factory security does not affect the display of the lock icon The amount of time in seconds remaining until factory sec
108. to poll The report rate is determined by the RP Pd parameter and the format of the report line is controlled by the RP F1 thru RP F8 parameters Field delimiters and line termination strings are specified by the RP d1 thru RP d5 and RP E1 thru RP F5 parameters Report Period When reports are enabled RP ON ON this parameter specifies the number RESTA of seconds between transmissions Report Delimiter String These parameters contain each character of the null terminated delimiter string which is printed between fields of the report line The parameter value is the hexadecimal ASCII code representing a single character RP D1 contains the first character followed by RP d2 RP d3 etc The null terminated string may be up to 5 characters in length ending with 0 RP d1 20 Examples RP d2 d5 00 space RP d1 20 RP d2 thru RP d5 0 comma RP d1 2C RP d2 thru RP d5 0 tab RP d1 09 RP d2 thru RP d5 0 comma space RP d1 20 RP d2 2C RP d3 thru RP d5 0 RP d1 thru RP d5 Report Line Termination String These parameters contain each character of the null terminated delimiter string which is printed between fields of the report line The parameter value is the hexadecimal ASCII code representing a single character RP E1 contains the first character followed by RP E2 RP E3 etc The null terminated string may be up to 5 characters in length ending with O Examples carriage return RP E1 0d
109. tor and deactivate the alarm s relay Value must be equal or lower than A1 SP for rising alarm value must be higher than A1 SP for oxygen falling alarm Sensor Dependent Alarm 1 Set Delay in seconds Delays activation of the alarm s display indicator and the alarm s relay after the concentration reaches to the alarm s set point value Alarm 1 Reset Delay in seconds Delays deactivation of the alarm s display indicator and the alarm s relay after the concentration reaches the alarm s reset point value Alarm 1 Options Specifies options for the alarm 1 indicator and relay NONE Non latching non failsafe FSF Non latching failsafe LAT Latching non failsafe BOTH Latching fail safe Failsafe energizes the alarm relay in the non None Both None alarm state and de energizes it on alarm and power failure The latching option requires that the alarm indicator be manually reset and relatched once the concentration has fallen to or below the alarm s set point value Alarm 2 Set Point See A1 SP for details BA 9999 Alarm 2 Reset Point See A1 RP for 9999 1 details Alarm 2 Set Delay in seconds See A1 Sd 10 1 for details Alarm 2 Reset Delay in seconds See A1 Rd for details ES 9999 Alarm 2 Options Specifies options for the alarm 2 indicator and relay See A1 OP for None Both None details Manual 087 0014D 4 2008 53 Model 4600 Gas PLUS MB Transmitter SCOTT HEALTH amp SAFETY DIET
110. tter SCOTT HEALTH amp SAFETY 2 3 4 NPT CONDUIT FITTINGS CONDUIT CUSTOMER SUPPLIED MOUNTING SPACER PLATE 074 0289 MUST BE INSTALLED BEHIND EITHER THE TRANSMITTER OR THE JUNCTION BOX IF OPTION IS ORDERED 8 7 8 225 mm 5 7 16 N 138mm MAX i DEPE 5 118 i 4 130 2mm 5 23 32 145mm MOUNTING SURFACE I 103 2mm a 4 1 16 5 16 8mm MOUNTING HOLES TYP 2 PLCS ee 5 11 16 144mm al ua 1 2 13mm Lag 6 3 16 157mm REF Figure 1 GasPlus Dimensions TRANSMITTER HOUSING SEE SIDE VIEW POWER SUPPLY P C B A SEE CHART OPTIONAL RELAYS SHOWN SENSOR HOUSING ASSEMBLY 096 2466 ELASTOMER CONNECTOR ASSEMBLY 093 0097 SENSOR ASSEMBLY 1 4 TURN SENSOR CAP FRONT VIEW ASSEMBLY 096 2105 ROCK SOLID SENSOR 096 2273 SHOWN WITH TRANSMITTER COVER amp DISPLAY CPU P C B A s REMOVED SEE SIDE VIEW FOR DETAILS 10 HOUSING COVER WITH GLASS WINDOW No 096 2151 DISPLAY P C B A TRANSMITTER HOUSING No 096 2248 CPU P C B A J5 SEE NOTE 1 1
111. ulfur Dioxide SO Low Humidity Model 75 8 Digit Prefix Suffix 096 2359 XXXX 0010 0015 0025 0050 0100 0200 0500 TEOS Model 58 8 Digit Prefix Suffix 096 2381 XXXX 50 PPM Vinyl Chloride Monomer VCM Model 73 Part Number 096 2404 20 PPM Vinyl Chloride Monomer VCM Model 73 Part Number 096 2441 1000 PPM 81 Model 4600 Gas PLUS MB Transmitter SCOTT HEALTH amp SAFETY Call 800 247 7257 or Your Local Sales Representative Rock Solid Sensors Bromine Br R S Chlorine Dioxide CIO R S Hydrogen Chloride R S Ozone 0 Low Humidity Low Humidity HCl Low Humidity Low Humidity Model 98 Model 57 Model 92 Model 76 8 Digit Prefix Suffix 8 Digit Prefix Suffix 8 Digit Prefix Suffix 8 Digit Prefix Suffix XXXX 096 2283 XXXX 096 2332 XXXX 096 2377 XXXX 0001 0001 0001 0001 0003 0003 0003 0003 0005 0005 vise 0005 0005 0010 0010 Long 0010 0010 0015 0015 far 0015 0015 0020 0020 RS 0020 0020 0025 0025 Ys 0025 0025 0030 0030 0030 0030 R S Bromine Br R S Chlorine Dioxide CIO R S Hydrogen Chloride R S Ozone 0 High Humidity High Humidity HCI High Humidity High Humidity Model 99 Model 78 Model 93 Model 77 8 Digit Prefix Suffix 8 Digit Prefix Suffix 8 Digit Prefix Suffix 8 Digit Prefix Suffix 096 2367 XXXX 096 2315 XXXX 096 2333 XXXX 096 2378 XXXX 0001 0001 0001
112. urity is automatically re enabled may be viewed under the F tMR parameter F tMR Factory Security Timer Status in Seconds 00 00 99 99 Factory Calibration Function This function is used at the factory to calibrate the sensor millivolt input to 0 250 1 1 and 1 800 volts and should not be required in the field F HtC Factory High Temperature Calibration fo fo o 62 Factory Reset Memory NONE Resets the instrument USER Resets the following parameters to their default values A1 SP A1 RP A1 Sd A1 Rd A1 OP A2 SP A2 Sd A2 Rd A2 OP AF NL AF OP AL IP AL tO SR dC St ON St Dt St t1 St t2 St Gt St Rt LK ON NONE FAST NONE LK OW LK tM MA SF MA F MAL MA t RP ON RP Pd RP d1 5 RP E1 5 RP F1 8 SC Ad SC bd SC dL SC ld SC LO SC Md SC OP SC P SC RS SC Rt SC Sb SC VF F LCd SNSR Copies slow sensor memory into fast processor memory and resets the following parameters to their default values A1 SP A1 RP A2 SP A2 RP AF NL FACT Resets the following parameters to their default values LK PW LK tM NOTE 1 The input amplifier calibration is reset to default values The amplifier should be recalibrated after this reset This calibration should be done only by factory authorized personnel NOTE 2 The current loop output calibration is reset to default values Both the 4mA and 20mA calibrations should be performed after this reset These calibrations may be performed in the field and are d
113. xygen transmitter which uses Nitrogen for this procedure Zero Calibration Procedure To zero the 4600 GasPlus MB proceed as follows STEP 1 Inhibit alarms and the 4 20 mA output by momentarily placing the magnet over the Z ESC key Observe the LCD indicates INHIBIT STEP 2 If using a zero air or nitrogen cylinder attach the calibration adaptor or flow cell to the transmitter Make all appropriate tubing connections per manufacturer recommendations Turn on the air flow at a rate of 500 cc min and let circulate over the sensor for 5 minutes Manual 087 0014D 4 2008 SCHIT HEALTH amp SAFETY Model 4600 Gas PLUS MB Transmitter TUBING ALERT Ensure the proper tubing is used when performing span calibration Teflon tubing should be used when calibrating with chlorine chlorine dioxide acid gases or ammonia Calibration Factor 50 mMmo pruma AQOOZMN STEP 3 Zero the transmitter by using the magnet and placing it over the over the Z ESC key on the transmitter body for approximately 5 seconds Remove the magnet The display will read SEt then 0 0 the display will vary with range 0 0 0 or 0 00 STEP 4 If spanning the instrument proceed to Span Calibration STEP 2 or take the transmitter out of inhibit mode by momentarily placing the magnet over the Z ESC key Observe that the INHIBIT indicator is not visible on the LCD The transmitter will automatically deactivate inhibit mode

4600 MB Gas Transmitter Operation & Maintenance

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4600 MB Gas Transmitter Operation &amp; Maintenance

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4600 MB Gas Transmitter Operation & Maintenance