RKI Instruments 65-2405RK-04 User Manual
Page 12
8 • 65-2405RK-04 Combustible Gas Transmitter
Wiring the Amplifier to a Controller
1.
Turn off the controller.
2.
Turn off or unplug power to the controller.
3.
Remove the amplifier junction box’s cover from the junction box.
4.
Guide a three-conductor, shielded cable, or three wires in conduit through the top
conduit hub of the amplifier junction box.
5.
Pull out the controller terminal strip, and connect the three wires to the terminal strip
as follows (see Figure 4).
•
Connect the positive wire to the
PWR/SIG “+”
terminal.
•
Connect the signal wire to the
PWR/SIG “
S”
terminal.
•
Connect the negative wire to the
PWR/SIG “-”
terminal.
CAUTION:
If shielded cable is used, leave the cable shield’s drain wire disconnected and
insulated at the amplifier junction box. You will connect the opposite end of the
cable’s drain wire to the controller’s chassis (earth) ground.
6.
Reinstall the controller terminal strip into its socket.
7.
Secure the amplifier junction box’s cover to the junction box.
8.
Route the cable or wires leading from the amplifier junction box through one of the
conduit hubs at the controller housing.
CAUTION:
Do not route power and transmitter wiring through the same controller conduit hub.
The power cable may disrupt the transmission of the transmitter signal to the
controller.
9.
Connect the wires to the applicable detector/transmitter terminal strip at the
controller as shown in Figure 4.