1. Manuals
  2. Brands
  3. RKI Instruments Manuals
  4. Transmitter
  5. 65-2645XL-05-04
  6. Operator's manual

RKI Instruments 65-2645XL-05-04 Operator's Manual

M2a-xl transmitter
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
65-2645XL-05-04
M2A-XL Transmitter
Operator's Manual
Part Number: 71-0646
Revision: P1
Released: 11/16/23
RKI Instruments, Inc.
www.rkiinstruments.com

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the 65-2645XL-05-04 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for RKI Instruments 65-2645XL-05-04

Summary of Contents for RKI Instruments 65-2645XL-05-04

  • Page 1 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual Part Number: 71-0646 Revision: P1 Released: 11/16/23 RKI Instruments, Inc. www.rkiinstruments.com...
  • Page 2 For most applications, typical calibration frequencies are between 3 and 6 months but can be more often or less often based on your usage. 2 • 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual...
  • Page 3 We do not assume indemnification for any accident or damage caused by the operation of this gas monitor and our warranty is limited to the replacement of parts or our complete goods. Warranty covers parts and labor performed at RKI Instruments, Inc. only, and does not cover field labor or shipment of parts back to RKI.

  • Page 4: Table Of Contents

    Selecting the Gas Type ............34 4 • 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual...
  • Page 5 Appendix C: Function Code 16 Registers ......64 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual • 5...

  • Page 6: Chapter 1: Introduction

    Chapter 1: Introduction Overview This chapter briefly describes the 65-2645XL-05-04 M2A-XL Transmitter. This chapter also describes the 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual (this document). Table 1 at the end of this chapter lists the specifications for the M2A-XL. About the M2A-XL Transmitter The M2A-XL transmitter is a fixed mount, continuous-monitoring detector head.

  • Page 7: Specifications

    M2A-XL and to minimize the risk of personal injury. Be sure to maintain and periodically calibrate the M2A- XL as described in this manual. 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual Specifications • 7...

  • Page 8: Chapter 2: Description

    3/4 NPT Conduit Hub Terminal Mounting Hole (2x) Strip Window Magnetic Wand 3/4 NPT Conduit Hub M2A-XL Junction Box Detector Junction Box Hydrogen Sulfide Detector Calibration Adapter/ Splash Guard Figure 1: M2A-XL External Components 8 • Overview 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual...
  • Page 9 A ground boss near the top conduit hub provides an external earth ground connection. 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual External Description • 9...
  • Page 10 Rubber Boot and Spacer A rubber boot and spacer are installed between the detector housing cap and the sensor. They help ensure that the sensor remains plugged into the detector housing body. 10 • External Description 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual...
  • Page 11 The magnetic wand is a short plastic rod with a magnet in one end. It is used to actuate the magnetic control switches on the control PCB while the junction box cover is still installed so that non-intrusive calibration can be performed. 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual External Description • 11...

  • Page 12: Internal Description

    The Modbus output may be used to connect the M2A-XL to a Modbus network. The terminal PCB also controls three relays, one fail and two gas alarm relays. 12 • Internal Description 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual...
  • Page 13 The Modbus terminal strip is a three position plug-in style terminal strip and is the bottom terminal strip in the left terminal column. It allows connection of the M2A-XL into a Modbus network. 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual Internal Description • 13...
  • Page 14 Figure 5: Control PCB Component Location OLED Display The OLED display is located at the top of the control PCB. It indicates the current gas reading and displays messages and parameters in the M2A-XL’s programs. 14 • Internal Description 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual...
  • Page 15 Since displaying the Information Screen only requires the use of one switch, the wand may be used to show the Information Screen (see “Information Screen” on page 25). 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual Internal Description • 15...
  • Page 16 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 operating. 16 • Internal Description 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual...

  • Page 17: Chapter 3: Installation & Startup

    Mount the detector junction box with the detector facing down as shown in Figure 7. 3/4 NPT 4.86 5.66 Conduit Port, 2.82 3/4 NPT Plugged Conduit Port Ø 0.25, 2X 1.00 Figure 6: Outline & Mounting Dimensions, M2A-XL Junction Box 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual Overview • 17...
  • Page 18 M2A-XL junction box. See the “Chapter 9: Parts List” on page 59 for available tubing. 18 • Mounting the M2A-XL Transmitter 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual...

  • Page 19: Wiring The M2A-Xl Transmitter

    A conduit seal, which is normally required to maintain the junction box’s hazardous location rating, will also help to prevent water from entering through the top port. 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual Wiring the M2A-XL Transmitter • 19...
  • Page 20 H2S Detector inches (for Groups C and D environments) Calibration Adapter/Splash Guard Figure 8: Wiring the Detector to the M2A-XL 15. Reinstall the detector terminal strip into its socket. 20 • Wiring the M2A-XL Transmitter 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual...
  • Page 21 Table 3: Wire Size for PWR/SIG Connections Max Distance to Max Distance to Max Distance to Controller Controller w/16 Gauge Controller w/14 Gauge w/18 Gauge Wire Wire Wire 2,500 ft. 5,000 ft. 8,000 ft. 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual Wiring the M2A-XL Transmitter • 21...
  • Page 22 5. Make controller, device, and relay connections as appropriate. If shielded cable is used for the PWR/SIG connections, connect the cable shield’s drain wire to an available chassis ground at the gas monitoring controller, recording device, or programmable controller. 22 • Wiring the M2A-XL Transmitter 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual...

  • Page 23: Start Up

    “Adjusting the Fresh Air Reading.” Adjusting the Fresh Air Reading When the M2A-XL is shipped from RKI Instruments, Inc., it is factory calibrated. If a full calibration is desired at startup, see “Calibration” on page 41.
  • Page 24 4. Press and release the ENTER button. The M2A-XL will perform a zero operation and the display will indicate SPAN w/Cal Gas?. 5. Press and release the DOWN/NO button. The display will indicate Leaving CAL Mode and the M2A-XL will return to normal operation. 24 • Start Up 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual...

  • Page 25: Chapter 4: Operation

    M2A-XL. 3. Release the DOWN/NO button when you are done viewing the Information Screen. The display will return to the normal operation screen within a couple of seconds. 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual Overview • 25...

  • Page 26: 4 - 20 Ma Signal Output Operation

    • Gas reading alternates with ALARM-1 message • A2 LED is on Alarm 2 Increasing gas reading at or above the alarm 2 setpoint • Gas reading alternates with ALARM-2 message 26 • 4 - 20 mA Signal Output Operation 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual...
  • Page 27 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. 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual Alarm Indications • 27...
  • Page 28 • The gas reading is replaced by the FAIL message. • The fail relay de-energizes. NOTE: The fail alarm has a 30 second delay. Responding to a Fail Condition 1. Verify that the detector wiring is correctly and securely connected. 28 • Alarm Indications 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual...
  • Page 29 2. When the input power increases above 10.0 volts, the M2A-XL will begin its warm-up sequence. 3. Verify that the M2A-XL enters normal operation after its warm-up sequence. If necessary, perform a fresh air adjustment. See “Adjusting the Fresh Air Reading” on page 23. 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual Alarm Indications • 29...

  • Page 30: Chapter 5: Configuration Mode

    Table 5 lists the M2A-XL parameters you can set. Table 5 also lists the factory set value for each parameter. Table 5: Configuration Parameters Parameter Description (Factory Set Value) ALARM-1 (level) The gas reading at which the M2A-XL initiates an alarm 1 condi- (10 ppm) tion. 30 • Overview 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual...
  • Page 31 (LATCH) alarm 2 circuit after the alarm 2 condition passes. If set as SELF-RST, the M2A-XL automatically resets the alarm 2 circuit after the alarm 2 condition passes. 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual Viewing & Changing M2A-XL Parameters • 31...
  • Page 32 If set to Disabled, the Auto Zero function is turned off. 4. When you have scrolled through all the adjustable parameters, SAVE IT? YES/NO appears on the display. 32 • Viewing & Changing M2A-XL Parameters 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual...
  • Page 33 If you wish to save the adjustments made, press and release the UP/YES button. Config Saved is indicated on the display for a few seconds and the M2A-XL returns to normal operation. 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual Viewing & Changing M2A-XL Parameters • 33...

  • Page 34: Chapter 6: Gas Type Mode

    CAUTION: The target gas is factory set and does not normally need to be changed. The standard setting for the 65-2645XL-05-04 is hydrogen sulfide. Gas Type Mode includes a 5-minute time-out feature. If you do not press a button for 5 minutes, the M2A-XL automatically returns to normal operation.
  • Page 35 Use the UP/YES and DOWN/NO buttons to adjust a setting. See “Chapter 5: Configuration Mode” on page 30 for a complete description of Configuration Mode. 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual Selecting the Gas Type • 35...
  • Page 36 Since a complete calibration is required, the calibration sequence will proceed without asking if you want to perform certain operations. 36 • Selecting the Gas Type 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual...

  • Page 37: Chapter 7: Maintenance

    This ribbon cable plugs into a connector on the top edge of the control PCB and on the bottom of the terminal PCB. 3. If the power difficulties continue, contact RKI for further instruction. 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual Overview • 37...
  • Page 38 • The detector fresh air contact RKI for further signal is low enough instruction. to cause a fail condition. • The detector is malfunctioning. • The terminal or display PCB is malfunctioning. 38 • Troubleshooting 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual...

  • Page 39: Calibration Frequency

    Although there is no particular calibration frequency that is correct for all applications, a calibration frequency of every 3 to 6 months is adequate for most hydrogen sulfide transmitter applications. Unless experience in a particular application dictates otherwise, RKI Instruments, Inc. recommends a calibration frequency of every 3 months.
  • Page 40 10. Add 1 minute to the length of time determined in Step 6. This is the response time for the detector. When performing a zero adjustment or span adjustment, gas must be applied for this length of time. 40 • Determining Response Time 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual...

  • Page 41: Calibration

    Touching the glass and removing the wand is the same as pressing and releasing a button. Touching the glass and keeping the wand in place is the same as pressing and holding a button. 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual Calibration • 41...
  • Page 42 9. Unscrew the zero air cylinder from the fixed flow regulator. Leave the calibration adapter/ splash guard’s flexible tubing connected to the regulator. The M2A-XL will continue to display the minimum gas response on the display and retain the response level in its memory. 42 • Calibration 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual...
  • Page 43 8. The M2A-XL will perform a span operation. The display will indicate SPAN Gas PASS for a few seconds, then indicate SPAN Gas SAVED before indicating Leaving CAL Mode for a few seconds. NOTE: If the span adjustment fails, see “Troubleshooting” on page 37 for recommended actions. 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual Calibration • 43...

  • Page 44: Replacing Components Of The H

    4. Unplug and remove the H S sensor with the rubber boot and spacer attached. 5. Remove the rubber boot and spacer from the old sensor. 44 • Replacing Components of the H S Detector 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual...
  • Page 45 If necessary for environmental conditions, apply thread sealant or Teflon tape to the hub and/or detector threads to seal them. 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual Replacing Components of the H S Detector • 45...
  • Page 46 CAUTION: Allow the replacement detector to warm up for 5 minutes before you continue with the next step. 11. Calibrate the replacement detector as described in “Calibration” on page 41. 46 • Replacing Components of the H S Detector 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual...

  • Page 47: Chapter 8: Rs-485 Modbus Output

    The MODBUS terminal strip is located on the terminal PCB (see Figure 4 on page 13). The following signals are available at the Modbus terminal strip: Table 8: Modbus Terminal Strip Signals Modbus Terminal Label (RS-485 Modbus Signal Name Name) Common 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual Overview • 47...
  • Page 48 An M2A-XL can be wired into an existing M2 Modbus system. The shape of the terminal PCB will be different but the wiring connections are identical and the ground jumper on the M2A-XL must still be removed. 48 • Wiring the M2A-XL in a Modbus System 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual...
  • Page 49 An M2A-XL can be wired into an existing M2 Modbus system. The shape of the terminal PCB will be different but the wiring connections are identical and the ground jumper on the M2A-XL must still remain installed. 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual Wiring the M2A-XL in a Modbus System • 49...
  • Page 50 ID = 3 ID = 4 ID = 127 Up to 128 M2As can be connected without a repeater Figure 14: Multiple M2A-XLs in a Two Branch Configuration 50 • Wiring the M2A-XL in a Modbus System 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual...

  • Page 51: Using The M2A-Xl In A 4-Wire Modbus System

    Table 9 lists the M2A-XL Modbus Mode parameters you can set. Table 9 also lists the factory set value for each parameter. 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual Using the M2A-XL in a 4-wire Modbus System • 51...
  • Page 52 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. 52 • Modbus Mode 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual...

  • Page 53: Supported Modbus Functions

    1 = Initialization 2 = Normal 3 = Warm-up 4 = Fail 5 = Calibration 6 = Post-Calibration 7 = Low Power 8 = Setup [11] Gas Type Change 0=Not Changed 1=Changed 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual Supported Modbus Functions • 53...
  • Page 54 Fail Relay Status 0 = Not Energized 1 = Energized Alarm 2 Relay Status 0 = Not Energized 1 = Energized Alarm 1 Relay Status 0 = Not Energized 1 = Energized 54 • Supported Modbus Functions 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual...
  • Page 55 Register 26 Register 26 is the alarm 1 ON delay. Integer values are in seconds. Register 27 Register 27 is the alarm 1 OFF delay. Integer values are in seconds. 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual Supported Modbus Functions • 55...
  • Page 56 Register 36 Register 36 is calibration month (upper byte) and day (lower byte). This is zero based (e.g. January=0 and the 1st=0). Register 37 Register 37 is the calibration year. 56 • Supported Modbus Functions 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual...
  • Page 57 Function Code 16, Register 21, that value is automatically copied to Function Code 03, Register 40. The M2A firmware looks to Function Code 03, Register 40 for the remote configuration setting. 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual Supported Modbus Functions • 57...
  • Page 58 Function Code 16, Register 21, that value is automatically copied to Function Code 03, Register 40. The M2A firmware looks to Function Code 03, Register 40 for the remote configuration setting. 58 • Supported Modbus Functions 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual...

  • Page 59: Chapter 9: Parts List

    M2A-XL junction box 45-6132RK Termination and ground jumper 65-2428 S replacement detector assembly (includes sensor), CSA version 71-0646 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual (this document) 81-0076RK-01 Zero air calibration cylinder, 34 liter steel 81-0076RK-03 Zero air calibration cylinder, 103 liter 81-0151RK-02...

  • Page 60: Appendix A: Control Button Quick Reference Guide

    • Alarm Off Delay (if self-resetting) • Zero Suppression • Noise Filter • Calibration Time-out Period Gas Type Mode Press and Hold Gas Type UP/YES and DOWN/NO for 5 seconds 60 • Supported Modbus Functions 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual...
  • Page 61 Adjustable or Viewable Parameters Combination Performed • Enable or Disable Modbus Modbus Mode Press and Hold DOWN/NO and • Slave ID ENTER for 5 • Baud Rate seconds • Parity • Response Delay 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual Supported Modbus Functions • 61...

  • Page 62: Appendix B: Plc And Dcs Device Wiring

    • If the M2A-XL will be wired into a Modbus network, see “Chapter 8: RS-485 Modbus Output” on page 47. 62 • Supported Modbus Functions 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual...
  • Page 63 4 - 20 mA In (S) (24 VDC) - Alarm 1 Alarm Device Detector Controller Wiring (PLC, DCS) Alarm 2 Alarm Device Modbus Wiring Typical Alarm Wiring Shown Figure 15: PLC and DCS Device Wiring 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual Supported Modbus Functions • 63...

  • Page 64: Appendix C: Function Code 16 Registers

    Value must be an integer. Any decimals are omitted. The decimal point location is the same as specified in Register 1 of Function Code 03. Register 8 Register 8 is the alarm 2 trigger. 0=Decreasing 1=Increasing 64 • Supported Modbus Functions 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual...
  • Page 65 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). 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual Supported Modbus Functions • 65...
  • Page 66 This register can be used to clear those flags. Table 17: Register 19, Clear Change Flags Bit(s) Value & Field [15:2] Unused Write “1” to this bit to clear “Gas Type Changed” flag 66 • Supported Modbus Functions 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual...
  • Page 67 Function Code 16, Register 21, that value is automatically copied to Function Code 03, Register 40. The M2A firmware looks to Function Code 03, Register 40 for the remote configuration setting. 65-2645XL-05-04 M2A-XL Transmitter Operator’s Manual Supported Modbus Functions • 67...

Table of Contents