RKI Instruments 65-2641RK-04 User Manual
Page 18

13
65-2641RK-04 M2A Transmitter Operator’s Manual
Figure 6: Wiring the Detector to the M2A
13. Reinstall the detector terminal strip into its socket.
14. If shielded cable is used between the detector junction box and the M2A junction box,
connect the cable’s drain wire to an available chassis (earth) ground at the M2A
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 M2A junction box. The number of cables or wires needed will
depend on whether the M2A is wired to a gas monitoring controller or just to power,
whether any relays are used, and whether the Modbus output is used.
Black
Cable
Shie ld
Red
White
Green
Dete cto r
Term ina l
Strip
Green
White
M2
J-Box
Calibra tion Adapter/Splash Gu ard
Dete cto r J-Bo x
Hydrogen
Dete cto r
Black
Red
C
N
C
N
O
AL
A
R
M
1
C
N
C
N
O
AL
AR
M
2
C
N
C
N
O
FA
IL
-
S
+
A
B
C
R
S
485
PW
R
/SI
G
R
W
G
B
LE
L
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