RKI Instruments 65-2615RK-05-04 - Manual (Page 18)

13 65-2615RK-05-04 M2 Transmitter Operator’s Manual
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.
C
NC
NO
AL
AR
M 2
A
L A
R
M
1
C
NC
NO
FA
IL
A
B
C
A
B
C
R
S 485
Detector
Terminal
Strip
+
+ +
-
+
-
TO
X
IC
O
X
Y
C
N
C
N
O
H2S Detector
-
S
+
-
S
+
PW
R /S
IG
R
S 485
PW
R
/S
IG
TO
X
IC
O
X
Y
Cable
Shield
M2
J-Box Black
Red
Black
Red
Calibration Adapter/Splash Guard
Detector J-Box