18
65-2643RK0504SS M2A Transmitter Operator’s Manual
14. Pull out the detector terminal strip and connect the two wires to the terminal strip as follows (see Figure 8).
•
Connect the wire corresponding to the detector’s green wire to the
OXY “-”
terminal.
•
Connect the wire corresponding to the detector’s white wire to the
OXY “+”
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 M2A
junction box’s chassis (earth) ground.
Figure 8: Wiring the Detector to the M2A
15. Reinstall the detector terminal strip into its socket.
16. 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.
PW
R/
S
IG
C
N
C
N
O
AL
ARM
1
C
NC
NO
AL
ARM
2
C
N
C
N
O
FA
IL
White
Gree n
-
S
+
T
O
X
IC
O
X
Y
+
+
Detector
Terminal
St rip
Cable
Shield
Inst all conduit seal
with in 18 inches (do
not install detector
in environm ent with
acetic acid)
Gree n
Detector J-Box
Calibration Adapter/Splash Guard
M2A
J-Box
Inst all conduit seal wit hin
2 inch es (for Grou p B
environments) or 18
inches (f or G roups C and
D environments)
Oxygen Detector
White
R
S
485
A
B
C
