S&C Instruction Sheet 768-550 13
Installation
Installing and Connecting a User-Supplied
Communication Device
STEP 9.
Mounting provisions are provided inside the
communication and control unit for a user-spec-
ified communication device. Consult your nearest
S&C Sales Office for mounting-configuration
availability.
When installing a 12-volt dc communication
device in the field:
Connect power to the
communication device by wiring terminals “37”
and “38” on terminal block T4 to the power input
terminals on the communication device. See
Figure 7.
When installing 24-volt dc communication
device in the field:
Connect power to the
communication device by wiring terminals “37”
and “40” on terminal block T4 to the power input
terminals on the communication device. See
Figure 11.
Figure 11. Connect power to the communication device using the
indicated termi nal block.
NOTICE
The battery charger float charge is factory-calibrat ed to
accommodate the loads installed in the communication
and control unit at the time of shipment . If additional
loads are subsequently added, recalibration of char-
ger output is recommended to ensure optimal battery
life . Please refer to the in cluded S&C Battery Charger
recalibration Procedure RD-3808 .
NOTICE
Make sure the communication port on the RTU is
isolated from the power supply . Fail ure to do so can
result in a short circuit and cause equipment damage .
NOTICE
When the communication device is sup
plied by
others, use of a surge suppres sor between the antenna
and the communication device is recommended to
prevent damage from lightning surges . Contact the
communication device manufacturer for rec ommended
surge suppressors .
