Rki-instruments 65-2619RK-CH4-4 User Manual

RKI Instruments, Inc.www.rkiinstruments.com65-2619RK-CH4-4M2 TransmitterOperator’s Manual Part Number: 71-0289RKRevision: 0Released: 12/27/13

5 65-2619RK-CH4-4 M2 Transmitter Operator’s ManualInternal DescriptionThis section describes the internal components of the M2. The internal compon

65-2619RK-CH4-4 M2 Transmitter Operator’s Manual 6control PCB with a ribbon cable. A 5 position connector on the left side of the terminal PCB is use

7 65-2619RK-CH4-4 M2 Transmitter Operator’s ManualTermination JumperA two pin header with a termination jumper installed is located below the Modbu

65-2619RK-CH4-4 M2 Transmitter Operator’s Manual 8Status LEDsThe M2 includes five status LEDs that are located above the display (see Figure 2).• Fai

9 65-2619RK-CH4-4 M2 Transmitter Operator’s ManualChapter 3: Installation & StartupOverviewThis chapter describes procedures to mount the M2 Tr

65-2619RK-CH4-4 M2 Transmitter Operator’s Manual 10Figure 5: Outline & Mounting Dimensions, Detector Junction Box3. Install 3/16 inch I.D. flexib

11 65-2619RK-CH4-4 M2 Transmitter Operator’s ManualWiring the M2 TransmitterWARNING: Always verify that the power to the M2 is off before you make

65-2619RK-CH4-4 M2 Transmitter Operator’s Manual 12• Connect the wire corresponding to the detector’s black wire to the LEL “B” terminal.CAUTION: If

13 65-2619RK-CH4-4 M2 Transmitter Operator’s ManualUse the following recommendations to determine how to wire the M2:• If Modbus connections will n

65-2619RK-CH4-4 M2 Transmitter Operator’s Manual 1416. Re-install the control PCB (and ribbon cable if necessary). Be sure the ribbon cable is routed

65-2619RK-CH4-4 M2 Transmitter Operator’s ManualWARNINGRead and understand this instruction manual before operating instrument. Improper use of the

15 65-2619RK-CH4-4 M2 Transmitter Operator’s Manuala control switch button, touch the magnet in the end of the magnetic wand to the M2’s glass cove

65-2619RK-CH4-4 M2 Transmitter Operator’s Manual 16Chapter 4: OperationOverviewThis chapter describes the M2 in normal operation. This chapter also d

17 65-2619RK-CH4-4 M2 Transmitter Operator’s Manual4 - 20 mA Signal Output OperationThe output at the S terminal of the power/signal terminal strip

65-2619RK-CH4-4 M2 Transmitter Operator’s Manual 18NOTE: You can select normally energized (N. EN) or normally de-energized (N. DE-EN) alarm 1 and al

19 65-2619RK-CH4-4 M2 Transmitter Operator’s ManualNOTE: If the M2 is in both an alarm 1 and alarm 2 condition, both the A1 and A2 LEDs will be on,

65-2619RK-CH4-4 M2 Transmitter Operator’s Manual 20NOTE: The low power alarm cannot be cleared using the ENTER button.When the voltage increases to 1

21 65-2619RK-CH4-4 M2 Transmitter Operator’s ManualChapter 5: Configuration ModeOverviewThis chapter describes how to view and change M2 parameters

65-2619RK-CH4-4 M2 Transmitter Operator’s Manual 22Table 5: Configuration ParametersParameter(Factory Set Value)DescriptionALARM-1 (level)(10% LEL)Th

23 65-2619RK-CH4-4 M2 Transmitter Operator’s Manual4. When you have scrolled through all the adjustable parameters, SAVE IT? YES/NO appears on the

65-2619RK-CH4-4 M2 Transmitter Operator’s Manual 24Chapter 6: Gas Type ModeOverviewThis chapter describes how to use Gas Type Mode to select the M2’s

65-2619RK-CH4-4 M2 Transmitter Operator’s ManualProduct WarrantyRKI Instruments, Inc. warrants gas alarm equipment sold by us to be free from defects

25 65-2619RK-CH4-4 M2 Transmitter Operator’s Manual4. When the desired target gas is on the display, press and release the ENTER button. The displa

65-2619RK-CH4-4 M2 Transmitter Operator’s Manual 26NOTE: When calibrating an M2 after changing the gas type, the M2 will not ask if you want to calib

27 65-2619RK-CH4-4 M2 Transmitter Operator’s ManualChapter 7: MaintenanceOverviewThis chapter describes procedures for performing preventive mainte

65-2619RK-CH4-4 M2 Transmitter Operator’s Manual 2810. If external alarms have been disabled, enable them when the display returns to a normal fresh

29 65-2619RK-CH4-4 M2 Transmitter Operator’s ManualFlickering DisplayThe display reading flickers often.•The M2 is experiencing false readings due

65-2619RK-CH4-4 M2 Transmitter Operator’s Manual 30Calibration FrequencyAlthough there is no particular calibration frequency that is correct for all

31 65-2619RK-CH4-4 M2 Transmitter Operator’s ManualCalibrationThis section describes how to calibrate the M2 transmitter. It includes procedures to

65-2619RK-CH4-4 M2 Transmitter Operator’s Manual 32Adjusting the Fresh Air Reading1. While in normal operation, press and hold the UP/YES button for

33 65-2619RK-CH4-4 M2 Transmitter Operator’s ManualResponse Time” on page 30.5. Turn the regulator knob clockwise to close it.6. Unscrew the calibr

65-2619RK-CH4-4 M2 Transmitter Operator’s Manual 34NOTE: Allow the replacement detector to warm up for 15 minutes before you continue with the next s

65-2619RK-CH4-4 M2 Transmitter Operator’s ManualTable of ContentsChapter 1: Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

35 65-2619RK-CH4-4 M2 Transmitter Operator’s ManualChapter 8: RS-485 Modbus OutputOverviewThis chapter describes the M2’s RS-485 Modbus output and

65-2619RK-CH4-4 M2 Transmitter Operator’s Manual 36Figure 8: Recommended Modbus WiringAlternate Modbus Wiring For Existing InstallationsAlthough the

37 65-2619RK-CH4-4 M2 Transmitter Operator’s ManualTermination JumperThe M2 includes a 2-pin termination header (see Figure 2) that is used when th

65-2619RK-CH4-4 M2 Transmitter Operator’s Manual 38Using the M2 in a 4-wire Modbus SystemAlthough the M2 is a 2-wire Modbus RTU device, it can be use

39 65-2619RK-CH4-4 M2 Transmitter Operator’s Manual4. When you have scrolled through all the adjustable parameters, SAVE IT? YES/NO appears on the

65-2619RK-CH4-4 M2 Transmitter Operator’s Manual 40Supported Modbus FunctionsThe M2 supports Function Code 03: Read Holding Registers and Function Co

41 65-2619RK-CH4-4 M2 Transmitter Operator’s ManualRegister 3Register 3 is the supply voltage (0.1 volt per count).Registers 4 - 11The 16 bytes in

65-2619RK-CH4-4 M2 Transmitter Operator’s Manual 42Register 12Register 12 is the range (full scale readout).Register 13Register 13 is the alarm 1 set

43 65-2619RK-CH4-4 M2 Transmitter Operator’s ManualRegister 30Register 30 is the alarm 2 relay reset.0=Latching1=Self-ResettingRegister 31Register

65-2619RK-CH4-4 M2 Transmitter Operator’s Manual 4414=Operation Not PerformedRegister 39Register 39 is the auto-zero disable.0=AutoZero Enabled1=Auto

65-2619RK-CH4-4 M2 Transmitter Operator’s ManualChapter 7: Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

45 65-2619RK-CH4-4 M2 Transmitter Operator’s ManualParts ListTable 13 lists replacement parts and accessories for the M2 Transmitter.Table 13: Part

65-2619RK-CH4-4 M2 Transmitter Operator’s Manual 46Appendix A: Control Button Quick Reference GuideThe M2’s control buttons allow access to operation

47 65-2619RK-CH4-4 M2 Transmitter Operator’s ManualAppendix B: PLC and DCS Device WiringThe M2 can be wired to a PLC or DCS device if desired. 1. G

65-2619RK-CH4-4 M2 Transmitter Operator’s Manual 48See Figure 12 below for field wiring connections to the M2. Figure 12: PLC and DCS Device Wir

49 65-2619RK-CH4-4 M2 Transmitter Operator’s ManualAppendix C: Function Code 16 RegistersThe M2 supports Function Code 16 that allows writing to th

65-2619RK-CH4-4 M2 Transmitter Operator’s Manual 50Register 9Register 9 is the alarm 2 relay state.0=Normally De-Energized1=Normally EnergizedRegiste

51 65-2619RK-CH4-4 M2 Transmitter Operator’s ManualRegister 19Register 19 is for clearing change flags. When parameters are changed at the M2, a fl

1 65-2619RK-CH4-4 M2 Transmitter Operator’s ManualChapter 1: IntroductionOverviewThis chapter briefly describes the 65-2619RK-CH4-4 M2 Transmitter.

65-2619RK-CH4-4 M2 Transmitter Operator’s Manual 2SpecificationsTable 1 lists specifications for the M2.WARNING: When using the M2, you must follow t

3 65-2619RK-CH4-4 M2 Transmitter Operator’s ManualChapter 2: DescriptionOverviewThe M2 combustible gas transmitter utilizes an infrared type of det

65-2619RK-CH4-4 M2 Transmitter Operator’s Manual 4M2 Junction BoxThe M2’s cast aluminum junction box protects the terminal PCB and wiring connections