Manual

M2 Transmitter Operator’s Manual 66
See Figure 31 below for field wiring connections to the M2.
Figure 31: PLC and DCS Device Wiring
S
PWR/SIG
+
C NC NO
FAIL
Alarm Device
Power
A B C
RS 485
ALARM 2
Alarm 1
Alarm Device
Fail Alarm
Device
Typical Alarm
Wiring Shown
Alarm 2
Alarm Device
24 VDC -
4 - 20 mA In (S)
(24 VDC) -
ALARM 1
+
See
Modbus
Wiring
24 VDC +
24 VDC
Power Supply
C NC NO
TOXIC OXY
C NC NO
Controller
(PLC, DCS)
See
Detector
Wiring