User Manual

4 9 65-2649RK-HC-04 M2A Transmitter Operator’s Manual
See Figure 12 below for field wiring connections to the M2A.
Figure 12: PLC and DCS Device Wiring
Alarm 1
Alarm Device
Fail Alarm
Device
Alarm Device
Power
Typical Alarm
Wiring Shown
4 - 20 mA In (S)
(24 V DC) -
24 VDC +
24 VDC
Power Supply
24 VDC -
Alarm 2
Alarm Device
See
Modbus
Wiring
- S +
A B C
RS 485 PWR/SIG
R W G B
LEL
See
Detector
Wiring
Controller
(PL C, DC S)
C NC N O
ALARM 1
C NC N O
ALARM 2
C NC NO
FAIL