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Chapter 6: Gas Type Mode

65-2670XL-XX-07 M2A-XL Transmitter

4. When the desired target gas is on the display, press and release the ENTER button. The

display will ask

SAVE IT? YES/NO

.

5. To discard the gas type change, press and release the DOWN/NO button. The display will ask

DO OVER? YES/NO

. Press the DOWN/NO button. The display will ask

ABORT? YES/

NO

. Press the UP/YES button. The M2A-XL will return to normal operation without

changing the gas type.

To save the gas type, press and release the UP/YES button. The display will indicate

Gas

Type Updated

, the display will indicate the target gas and the detection range for a few

seconds, and then the M2A-XL will enter Configuration Mode automatically so that the
parameter settings in Configuration Mode can be verified or changed.

6. While in Configuration Mode press and release the ENTER button to accept the displayed

parameter setting and move to the next one. Use the UP/YES and DOWN/NO buttons to
adjust a setting. See “Chapter 5: Configuration Mode” on page 31 for a complete description
of Configuration Mode.

7. When you have reviewed and accepted the last item in Configuration Mode by pressing the

ENTER button, display will ask

SAVE IT? YES/NO

.

NH3

0 - 75.0 ppm

SO2

0 - 6.00 ppm

ASH3

0 - 1.50 ppm

H2S

0 - 50.0 ppm

CLO2

0 - 1.00 ppm

CLO2

0 - 3.00 ppm

NH3

0 - 500 ppm

NH3

0 - 200 ppm

HCN

0 - 15.0 ppm

CLO2

0 - 5.00 ppm

CL2

0 - 5.00 ppm

NH3

0 - 100 ppm

PH3

0 - 1.00 ppm

SO2

0 - 10.0 ppm

OXYGEN

0 - 25.0% volume

Table 6: Gas Types

Gas Type
Choices

Detection Range

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35
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Содержание 65-2670-CL2-04

Страница 1: ...RKI Instruments Inc www rkiinstruments com 65 2670XL XX 07 M2A XL Transmitter Operator s Manual Part Number 71 0617 Revision P1 Released 11 14 22 ...

Страница 2: ...or death Periodic calibration and maintenance of the gas monitor is essential for proper operation and correct readings Please calibrate and maintain this instrument regularly Frequency of calibration depends upon the type of use you have and the sensor types For most applications typical calibration frequencies are between 3 and 6 months but can be more often or less often based on your usage ...

Страница 3: ...anty indicates the full extent of our liability and we are not responsible for removal or replacement costs local repair costs transportation costs or contingent expenses incurred without our prior approval THIS WARRANTY IS EXPRESSLY IN LIEU OF ANY AND ALL OTHER WARRANTIES AND REPRESENTATIONS EXPRESSED OR IMPLIED AND ALL OTHER OBLIGATIONS OR LIABILITIES ON THE PART OF RKI INSTRUMENTS INC INCLUDING...

Страница 4: ...n 9 Internal Description 12 Chapter 3 Installation Startup 17 Overview 17 Mounting the M2A XL Transmitter 17 Wiring the M2A XL Transmitter 18 Start Up 22 Chapter 4 Operation 25 Overview 25 Normal Operation 25 Information Screen 25 4 20 mA Signal Output Operation 26 Alarm Indications 27 Chapter 5 Configuration Mode 31 Overview 31 Viewing Changing M2A XL Parameters 31 Chapter 6 Gas Type Mode 35 Over...

Страница 5: ...41 Replacing Components of the Detector 45 Chapter 8 RS 485 Modbus Output 48 Overview 48 Wiring the M2A XL in a Modbus System 48 Using the M2A XL in a 4 wire Modbus System 52 Modbus Mode 52 Supported Modbus Functions 54 Chapter 9 Parts List 59 Appendix A Control Button Quick Reference Guide 61 Appendix B PLC and DCS Device Wiring 62 Appendix C Function Code 16 Registers 64 ...

Страница 6: ...display which is visible through the window in the cover front face and provides a 4 20 mA signal which indicates the target gas reading for use by a gas monitoring controller recording device or programmable controller The M2A XL also provides an RS 485 Modbus output Three sets of relay contacts two controlled by the gas alarms and one by the fail alarm rated at 115 VAC 5 amps are available for c...

Страница 7: ...rements Alarm Settings Alarm 1 Alarm 2 Ammonia 0 75 0 ppm and 0 100 ppm 12 ppm 25 ppm Ammonia 0 200 ppm 25 ppm 35 ppm Ammonia 0 500 ppm 35 ppm 300 ppm Chlorine 0 3 00 ppm 0 50 ppm 1 00 ppm Chlorine 0 5 00 ppm 0 50 ppm 1 50 ppm Chlorine 0 10 0 ppm 1 0 ppm 3 0 ppm Chlorine Dioxide 0 1 00 ppm 0 10 ppm 0 30 ppm Chlorine Dioxide 0 3 00 ppm 0 30 ppm 1 00 ppm Chlorine Dioxide 0 5 00 ppm 0 50 ppm 1 00 ppm...

Страница 8: ...L and to minimize the risk of personal injury Be sure to maintain and periodically calibrate the M2A XL as described in this manual Operating Temperature 20 C to 40 C Accuracy 10 of reading or 5 of full scale whichever is greater These are the RKI factory settings You can change the alarm settings in Configuration Mode See Viewing Changing M2A XL Parameters on page 31 Table 1 M2A XL Specifications...

Страница 9: ...External Description This section describes the junction boxes and all external components of the M2A XL transmitter M2A XL Junction Box The M2A XL s cast aluminum junction box is dust and weather resistant The junction box also protects the M2A XL and all connections made to it Use the three 3 4 NPT conduit hubs to wire the remotely installed combustible gas detector and connect wiring from an ex...

Страница 10: ...he detector is factory wired to one side of this terminal strip The other side of the terminal strip is for user supplied wiring to the detector terminal strip located in the M2A XL junction box This wiring should go through the top 3 4 NPT conduit hub Three spacers installed on the back of the junction box controls the distance of the junction box from a mounting surface A ground boss near the to...

Страница 11: ...to the detector housing An adhesive backed gasket inside the detector housing cap helps ensure that the sensor remains plugged into the detector housing body It retains the plug in sensor and protects it from damage Unscrew the detector cap to access the plug in sensor for maintenance or replacement A cap gasket seals the interface between the housing and cap Plug In Sensor The sensor is secured w...

Страница 12: ...am A banana jack is screwed into each of the standoffs and used for mounting the control PCB The terminal PCB converts the electrical output from the detector to a signal which can be displayed by the OLED display a 4 20 mA signal that is proportional to the detection range and an RS 485 Modbus output signal The 4 20 mA signal may be used by a recording device gas monitor controller or programmabl...

Страница 13: ...r the M2A XL to function The S terminal is used if you want to connect the 4 20 mA output signal to another device such as a gas monitoring controller chart recorder or programmable controller PLC Detector Terminal Strip The detector terminal strip is a four position plug in style terminal strip and is the middle terminal strip in the left terminal column The two terminals labeled TOXIC are used t...

Страница 14: ... RS 485 Modbus Output on page 48 for a description of using the M2A XL in a Modbus system Ground Jumper A two pin header with a jumper installed is located along the left side of the terminal PCB Leave this jumper installed unless directed to remove it for a Modbus installation See Chapter 8 RS 485 Modbus Output on page 48 for a description of using the M2A XL in a Modbus system Control PCB The OL...

Страница 15: ...netic wand close enough to them to actuate them Although the magnetic switches have the same functions as the push button switches it is not practical to use them for operations other than calibration because it is not possible to actuate two magnetic switches at once with only one magnetic wand Since displaying the Information Screen only requires the use of one switch the wand may be used to sho...

Страница 16: ...L is experiencing a fail condition A fail condition can be caused by a detector failure or low detector signal Alarm 1 LED The alarm 1 LED is on when the M2A XL is experiencing an alarm 1 condition Alarm 2 LED The alarm 2 LED is on when the M2A XL is experiencing an alarm 2 condition RX TX LED s These LED s indicate data being received RX and transmitted TX when the M2A XL s Modbus output is opera...

Страница 17: ...edures The site should be easily accessible For the detector junction box select a site where the target gas is likely to be found first For lighter gases mount the detector near the ceiling for heavier gases mount the detector near the floor The junction boxes should be mounted no further than 200 feet from each other 2 Use 10 screws through the M2A XL junction box s two mounting holes to secure ...

Страница 18: ...se the flexible tubing on the other end to connect to a regulator during calibration See the Chapter 9 Parts List on page 59 for available tubing Wiring the M2A XL Transmitter Wiring the Detector to the M2A XL WARNING Always verify that the power to the M2A XL is off before you make wiring connections 1 Confirm that no power is being applied to the M2A XL 2 Remove the detector junction box s cover...

Страница 19: ...or two wires in conduit through the bottom conduit hub of the M2A XL junction box WARNING If the top conduit hub is used for wiring be sure to seal the threads to ensure water does not enter the junction box 12 To gain access to a plug in terminal strip for wiring pull it out of its socket by grasping the wall between two terminal positions with needle nose pliers and pulling Be careful not to exe...

Страница 20: ...cable s drain wire to an available chassis earth ground at the M2A XL junction box Do not connect the shield drain wire at the detector junction box A B C RS 4 85 Black TOXIC OX Y PWR SIG S Cable Shield See Table C NC NO AL ARM 1 C NC NO AL ARM 2 C NC NO FAIL Cl2 Gas Type W ire red NH3 Detector Terminal Strip Detector Calibration Adapter Splash Guard Detector J Box SO2 blue HCN white violet CLO2 y...

Страница 21: ...to the power signal terminal strip depending on whether or not the signal S terminal is used The S terminal has a 4 20 mA output but if you do not need to monitor this signal and do not connect to the S terminal to access this signal the M2A XL will still function completely If the PWR SIG connections and one or more relays are used route the connections to the M2A XL in conduit Use shielded cable...

Страница 22: ... an available chassis ground at the gas monitoring controller recording device or programmable controller Start Up Introducing Incoming Power 1 Complete the installation procedures described earlier in this manual 2 Verify that all wiring connections are correct and secure 3 Turn on the incoming power 4 If necessary turn on the controller or other monitoring device that is connected to the M2A XL ...

Страница 23: ...vironment environment known to be free of combustible or toxic gas vapors and of normal oxygen content 20 9 CAUTION If you suspect the presence of the target gas in the monitoring environment use the calibration kit and the zero air calibration cylinder to introduce fresh air to the detector and verify an accurate fresh air setting See the Calibration on page 41 for instructions on how to use a ze...

Страница 24: ...different time out period see Viewing Changing M2A XL Parameters on page 31 for instructions to change the calibration time out 1 While in normal operation press and hold the UP YES button for 5 seconds to enter Calibration Mode Release the button when the following screen appears 2 Press and release the UP YES button to continue The display will indicate the target gas and CAL Mode for a few seco...

Страница 25: ... Information Screen displays the M2A XL s operating voltage and firmware and hardware information To display the Information Screen do the following 1 Press and hold the DOWN NO button for 3 seconds The Information Screen will appear 2 Continue holding the DOWN NO button to keep the Information Screen on the display The top line indicates the operating voltage that is connected to the M2A XL The s...

Страница 26: ...tinue to indicate this until Calibration Mode is entered and a calibration is performed In this situation the signal output will be fixed at 3 5 mA from the time Gas Type Mode is entered until the M2A XL is calibrated and returns to normal operation If you enter Calibration Mode Configuration Mode Gas Type Mode or Modbus Mode the signal output will be fixed at 3 5 mA until the M2A XL returns to no...

Страница 27: ...ing gas reading at or above the alarm 1 setpoint A1 LED is on Gas reading alternates with ALARM 1 message Alarm 2 Increasing gas reading at or above the alarm 2 setpoint A2 LED is on Gas reading alternates with ALARM 2 message Fail Disconnected or misconnected detector wiring The plug in sensor is not properly plugged into the socket in the detector housing body NOTE It could take up to 40 minutes...

Страница 28: ... off the A1 LED resets the OLED display and de energizes the alarm 1 relay NOTE If the ENTER button is pressed while the M2A XL is in an alarm 1 condition the A1 LED will flash but all other indications will remain unchanged You cannot de energize the alarm 1 relay until the gas reading falls below the alarm 1 setpoint Alarm 2 Condition Alarm 2 Condition Indications When the gas reading reaches th...

Страница 29: ... relay until the gas reading falls below the alarm 2 setpoint Fail Condition Fail Condition Indications The M2A XL indicates a fail condition for any of the following The detector wiring is disconnected or incorrectly connected The plug in sensor is not properly plugged into the socket in the detector housing body NOTE It could take up to 40 minutes for a disconnected NH3 plug in sensor to trigger...

Страница 30: ...input voltage is displayed on the bottom line of the OLED display The fail relay de energizes NOTE The low power alarm cannot be cleared using the ENTER button When the voltage increases to 10 0 volts the low power alarm is cleared and the M2A XL will begin its warm up sequence Responding to a Low Power Condition 1 Determine and correct the cause of the low power condition 2 When the input power i...

Страница 31: ...hold the UP YES and ENTER buttons for 5 seconds to enter Configuration Mode Release the buttons when the following screen appears 2 If you want to exit Configuration Mode press and release the DOWN NO button and the M2A XL will return to normal operation If you want to continue in Configuration Mode press and release the UP YES button The target gas and the full scale will be displayed for a few s...

Страница 32: ...m 15 60 minutes A1 OffDy alarm 1 off delay 0 sec The amount of time the M2A XL delays turning off the alarm 1 circuit once an alarm 1 condition passes This parameter appears only if the alarm 1 relay reset setting is set to SELF RST It can be set in 1 second increments from 0 60 seconds in 1 minute increments from 1 15 minutes and in 15 minute increments from 15 60 minutes ALARM 2 level 50 ppm The...

Страница 33: ...lay a reading of 0 ppm for gas readings from 2 ppm to 2 ppm It is settable from 0 to 6 of the detection range FILTER 5 secs The filter feature helps smooth out jumpy or noisy signals from the detector You can set the filter from 0 seconds to 60 seconds in 5 seconds increments The displayed gas reading is the average reading over the previ ous time period defined by the filter setting So if the fil...

Страница 34: ... YES button to return to normal operation If you wish to change some of the adjustments made press and release the DOWN NO button The DO OVER YES NO message will display Press and release the UP YES button The Re do Config message will display and the M2A XL will return to the first adjustable parameter Go back to step 3 and continue If you wish to save the adjustments made press and release the U...

Страница 35: ...g the Gas Type 1 While in normal operation or during the warm up sequence press and hold the UP YES and DOWN NO buttons for five seconds Release them when the following screen appears 2 If you want to exit Gas Type Mode press and release the DOWN NO button The display will indicate NO CHANGE and the M2A XL will return to normal operation If you want to continue in Gas Type Mode press and release t...

Страница 36: ...n the M2A XL will enter Configuration Mode automatically so that the parameter settings in Configuration Mode can be verified or changed 6 While in Configuration Mode press and release the ENTER button to accept the displayed parameter setting and move to the next one Use the UP YES and DOWN NO buttons to adjust a setting See Chapter 5 Configuration Mode on page 31 for a complete description of Co...

Страница 37: ...play will indicate CAL NEEDED Since the gas type has been changed a successful calibration must be performed before the M2A XL can enter normal operation 10 Press and release the UP YES button to enter Calibration Mode Normally you must hold the UP YES button for 5 seconds to enter Calibration Mode but since a calibration is required only a momentary push is needed to enter Calibration Mode after ...

Страница 38: ...es symptoms probable causes and recommended action for problems you may encounter with the M2A XL NOTE This troubleshooting guide describes M2A XL problems only If the M2A XL is connected to a controller see the controller operator s manual for problems you may encounter with the controller Table 7 Troubleshooting the Detector Condition Symptom s Probable Causes Recommended Action No Power The dis...

Страница 39: ...g is properly shielded See Wiring the M2A XL Transmitter on page 18 2 Verify that the detector wiring is correct and secure 3 Increase the filter setting in Configuration Mode 4 Increase the zero suppression setting in Configuration Mode 5 If the display difficulties continue contact RKI for further instruction Fail Condition M2A XL indicates a fail condition Controllerindicates a fail condition T...

Страница 40: ...ths may be necessary Slow or No Response Dif ficult or Unable to Cali brate Unable to successfully set the fresh air or span reading during calibration M2A XL requires frequent calibration NOTE See Calibration Frequency on page 40 for calibration frequency guidelines The calibration cylinder is low out dated or defective The calibration gas flow rate is too low The calibration gas is not an approp...

Страница 41: ...r instructions to set the calibration time out Special Note About Calibrating a ClO2 Detector There are two ways to calibrate a ClO2 detector using a ClO2 generator or using a Cl2 cylinder and a 0 4 factor If a Cl2 cylinder is used for calibration RKI Instruments Inc recommends using 2 ppm of Cl2 and setting the ClO2 reading to 0 8 ppm If a ClO2 generator is being used the generator s flow rate sh...

Страница 42: ... XL will continue to display this reading and retain it in its memory until the span adjustment procedure is completed Preparing for Calibration Materials 0 25 LPM fixed flow regulator CAUTION Using the 0 5 LPM regulator that is normally recommended for M2A XLs will result in an inaccurate calibration zero air cylinder if you suspect the presence of the target gas in the sampling environment calib...

Страница 43: ...ernate with FreshAir on the top display line and the current gas reading will be on the bottom display line To skip adjusting the fresh air reading press and release the DOWN NO button The display will indicate SPAN w Cal Gas Skip to the next section Adjusting the Span Setting 4 Screw the zero air cylinder into the 0 25 LPM fixed flow regulator CAUTION Using the 0 5 LPM regulator that is normally ...

Страница 44: ...calibration gas to flow for 2 minutes 5 Turn the regulator knob clockwise to close it 6 Unscrew the calibration gas cylinder from the fixed flow regulator and unscrew the calibration cup from the detector The M2A XL will continue to display the maximum gas response on the display and retain the response level in its memory 7 Adjust the gas reading up or down to match the calibration gas cylinder c...

Страница 45: ...acing Components of the Detector This section includes a procedure to replace the plug in sensor the hydrophobic membrane and the entire detector assembly In most cases it is not necessary to replace the entire detector assembly Replacing the Plug In Sensor CAUTION The sensor contains electrolyte which is a dilute acid Do not disassemble the sensor when replacing it with a new one If sensor electr...

Страница 46: ...he transmitter as described in the Calibration on page 41 Replacing the Hydrophobic Membrane 1 Turn off or disconnect power to the M2A XL 2 Unscrew the detector housing cap from the detector housing body 3 Unplug the plug in sensor from the four socket pattern in the detector housing body 4 Gently pry up the edge of the white hydrophobic membrane from the sensor face with a small flat blade screwd...

Страница 47: ...e detector junction box then screw the mounting threads of the detector into the conduit hub If necessary for environmental conditions apply thread sealant or Teflon tape to the hub and or detector threads to seal them 6 Connect the detector leads to the terminal block the same way the old detector was wired see Figure 8 on page 20 7 Reinstall the detector junction box cover 8 Turn on or plug in p...

Страница 48: ...ue slave addresses 1 247 The M2A XL s line driver provides for up to 128 M2A XLs to be connected together without the need for a repeater Figure 13 Figure 14 below illustrate typical M2A XL wiring configurations If more than 128 M2A XLs need to be connected together RS 485 repeater s should be used such that no more than 128 M2A XLs reside on any given network segment CAUTION The network segment c...

Страница 49: ...s configuration 5 wires are used for wiring the M2A XL into a Modbus system Figure 11 also illustrates typical alarm device wiring The ground jumper must be removed in this wiring configuration Adding an M2A XL to an Existing M2 Modbus Installation with Recommended Wiring An M2A XL can be wired into an existing M2 Modbus system The shape of the terminal PCB will be different but the wiring connect...

Страница 50: ...minal on the Modbus controller is omitted Instead the Common terminal on the Modbus controller is connected to the of the 24 VDC power supply The ground jumper must be installed in this wiring configuration Adding an M2A XL to an Existing M2 Modbus Installation with Alternate Wiring An M2A XL can be wired into an existing M2 Modbus system The shape of the terminal PCB will be different but the wir...

Страница 51: ...rmination jumper removed see Figure 13 Figure 14 below Figure 13 Multiple M2A XLs in a Daisy Chain Configuration ID 125 Modbus Master Up to 128 M2As can be connected without a repeater RS 485 RS 485 M2A Termination Jumper Not Installed M2A Termination Jumper Not Installed ID 127 ID 126 M2A Termination Jumper Installed ID 128 M2A Termination Jumper Not Installed M2A Termination Jumper Not Installed...

Страница 52: ...M2A XL automatically returns to normal operation NOTE If the M2A XL returns to normal operation because of a time out it enters a warm up period just as it does when it is first turned on 1 While in normal operation simultaneously press and hold the DOWN NO and ENTER buttons for 5 seconds to enter Modbus Mode Release the buttons when the following screen appears 2 To exit Modbus Mode press and rel...

Страница 53: ...s to normal operation NOTE All M2A XLs on a Modbus network must be configured with the same baud rate and parity and each M2A XL must have a unique slave ID For an M2A XL to participate on a network the ENABLED DISABLED setting must be set to ENABLE Table 9 Configuration Parameters Modbus Mode Parameter Available Settings Description Enabled Disabled Can be set to ENABLED or DISABLED factory setti...

Страница 54: ...egisters 1 2 is shown below in Table 10 Table 11 Table 10 Register 1 Numerical Reading with Sign Decimal Point Bit Field Assignments Bit s Value Field 15 Sign of Reading 0 Positive 1 Negative 14 13 Format of Reading 0 XXX no decimal point 1 XX X 2 X XX 3 XXX 12 0 Numerical value of display reading 8000 max Table 11 Register 2 Operating State Alarms Relays Bit Field Assignments Bit s Value 15 12 Op...

Страница 55: ...ot Asserted 1 Fail Asserted 7 6 Alarm 2 Status 0 No Alarm 1 Unacknowledged Alarm 2 Acknowledged Alarm 3 Unused Code 5 4 Alarm 1 Status 0 No Alarm 1 Unacknowledged Alarm 2 Acknowledged Alarm 3 Unused Code 3 Overscale Status 0 Not Overscale 1 Overscale 2 Fail Relay Status 0 Not Energized 1 Energized 1 Alarm 2 Relay Status 0 Not Energized 1 Energized 0 Alarm 1 Relay Status 0 Not Energized 1 Energized...

Страница 56: ...s the same as specified in Register 1 Registers 15 19 Registers 15 19 are the Gas Name ASCII String NULL Terminated Registers 20 22 Registers 20 22 are the Gas Units String NULL Terminated Register 23 Register 23 is the alarm 1 trigger 0 Decreasing 1 Increasing Register 24 Register 24 is the alarm 1 normal relay state 0 Normally De Energized 1 Normally Energized Register 25 Register 25 is the alar...

Страница 57: ...econds Register 33 Register 33 is zero suppression Toxics and LEL 0 6 of full scale Oxygen 0 0 7 Oxygen The decimal point location is the same as specified in Register 1 Register 34 Register 34 is noise filter Integer values in seconds 0 60 in 5 second increments Register 35 Register 35 is calibration timeout in minutes 5 10 15 20 25 or 30 Register 36 Register 36 is calibration month upper byte an...

Страница 58: ...er access level 0 None 1 Alarm Reset Function Code 16 Write Registers There are 21 registers in Function Code 16 that can be used to write to the M2A XL This section only describes Register 16 because it can be used to reset an alarm condition For a complete description of Function Code 16 see Appendix C Function Code 16 Registers on page 64 Register 16 Register 16 performs the same function as th...

Страница 59: ...5 2302 CLO2 3 and 65 2303 CLO2 5 detectors 65 2053 01 CT 7 Series plug in sensor 0 500 ppm NH3 with membrane for 65 2302 NH3 500 detector 65 2054 01 CT 7 Series plug in sensor 0 75 0 ppm 0 100 ppm and 0 200 ppm NH3 with membrane for 65 2302 NH3 65 2302 NH3 1 and 65 2303 NH3 2 detectors 65 2302 CL2 CT 7 Series detector 0 3 00 ppm chlorine includes sensor 65 2302 CL2 5 CT 7 Series detector 0 5 00 pp...

Страница 60: ...ppm NH3 in nitrogen 58 liter 81 0176RK 04 Calibration cylinder 25 ppm NH3 in nitrogen 34 liter aluminum 81 0190RK 02 Calibration cylinder 5 ppm Cl2 in nitrogen 58 liter 81 0190RK 04 Calibration cylinder 5 ppm Cl2 in nitrogen 34 liter aluminum 81 0192RK 02 Calibration cylinder 2 ppm Cl2 in nitrogen 58 liter 81 0192RK 04 Calibration cylinder 2 ppm Cl2 in nitrogen 34 liter aluminum 81 1050RK 25 Regul...

Страница 61: ... Table 14 Control Button Quick Reference Chart Mode Entered or Function Performed Button Combination Adjustable or Viewable Parameters Alarm Reset Press and Release ENTER n a Show Information Screen Press and Hold DOWN NO Input Voltage M2A XL Version Revision Information Calibration Mode Press and Hold UP YES for 5 seconds Fresh Air Adjust Span or Zero for Oxygen Adjust with Calibration Gas Config...

Страница 62: ...it for connections to the power signal terminal strip If the PWR SIG terminal strip connections and one or more relays are used route the connections to the M2A XL in conduit Use shielded cable in the conduit for the PWR SIG connections and unshielded cable or individual wires for the relay connections Make sure any wire or cable used for relay wiring is appropriately rated for the power that it w...

Страница 63: ... 15 below for field wiring connections to the M2A XL Figure 15 PLC and DCS Device Wiring S PWR SIG Alarm 1 Alarm Device Fail Alarm Device Alarm Device Power Typical Alarm Wiring Shown A B C RS 485 4 20 mA In S 24 VDC 24 VDC 24 VDC Power Supply 24 VDC Alarm 2 Alarm Device See Modbus Wiring See Detector Wiring Controller PLC DCS TOXIC OXY C NC NO ALARM 1 C NC NO ALARM 2 C NC NO FAIL ...

Страница 64: ...1 Increasing Register 3 Register 3 is the alarm 1 relay state 0 Normally De Energized 1 Normally Energized Register 4 Register 4 is the alarm 1 relay reset 0 Latching 1 Self Resetting Register 5 Register 5 is the alarm 1 ON delay Integer value is in seconds Register 6 Register 6 is the alarm 1 OFF delay Integer value is in seconds Register 7 Register 7 is the alarm 2 set point Value must be an int...

Страница 65: ... seconds Register 13 Register 13 is the zero suppression Toxics and LEL 0 6 Full Scale Oxygen 0 0 7 Oxygen Value must be an integer Any decimals are omitted Register 14 Register 14 is the noise filter Integer value is in seconds 0 60 in 5 second increments Register 15 Register 15 is the calibration timeout Value is in minutes 5 10 15 20 25 or 30 Register 16 Register 16 is explained in Supported Mo...

Страница 66: ... register can be used to clear those flags Table 16 Register 19 Clear Change Flags Register 20 Register 20 is the AutoZero Disable 0 AutoZero Enabled 1 AutoZero Disabled Register 21 Register 21 is the Remote Configuration Register 0 No Remote Configuration 1 Reset Alarm Bit s Value Field 15 2 Unused 1 Write 1 to this bit to clear Gas Type Changed flag 0 Write 1 to this bit to clear Configuration C...

Страница 67: ...65 2670XL XX 07 M2A XL Transmitter Appendix C Function Code 16 Registers 67 ...

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