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 shielded cable is used, leave the cable shield’s drain wire disconnected and
insulated at the detector junction box. You will connect the opposite end of the cable’s
drain wire to the M2 junction box’s chassis (earth) ground.
Figure 6: Wiring the Detector to the M2
13. Reinstall the detector terminal strip into its socket.
14. If shielded cable is used between the detector junction box and the M2 junction box,
connect the cable’s drain wire to an available chassis (earth) ground at the M2 junction
box. Do not connect the shield drain wire at the detector junction box.
15. Guide multi conductor shielded cable or cables or wires in conduit through the top
conduit hub of the M2 junction box. The number of cables or wires needed will
depend on whether the M2 is wired to a gas monitoring controller or just to power,
whether any relays are used, and whether the Modbus output is used.
NOTE:
If the M2 is being wired to a PLC or DCS device, see “Appendix B: PLC and
DCS Device Wiring” on page 47, then continue with step 8.
Red
W hite
G reen
Black
C
NC
N
O
IR LEL Detector
Detector J-Box
AL
A
R
M
2
AL
A
R
M
1
C
NC
NO
C
NC
NO
FA
IL
-
S
+
LE
L
R
W
G
B
-
S
+
PW
R
/S
IG
RS
4
8
5
R
W
G
B
Detector
Term inal
Stri p
LE
L
P
W
R
/S
IG
R
S
485
A
B
C
A
B
C
Calibrati on Adapter/Splash G uard
Black
G reen
W hite
Red
Cabl e
Shi eld
M2
J-Box
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