B-8
Communication Cable Connections
to the Chillgard RT Relay Module
1.
Locate the RS-485 communication cable inside the Chillgard RT
Relay Module enclosure.
2.
Locate the eight cable entries on the right side of the relay module
(FIGURE B-2). From these eight cable entries, choose one of the
three bottom entries and remove the hole plug.
3.
Route the communication cable through the hole using proper
hardware (not supplied) to secure the cable. A 30 mm distance
must be maintained between this communication cable and the
electronic assembly or power line feeds.
Communication Cable Connections
to the Chillgard RT Refrigerant Monitor
1.
Route the communication cable to the Chillgard RT Refrigerant
Monitor.
2.
Find an unused entry in the Chillgard RT Refrigerant Monitor
enclosure and remove the hole plug.
3.
Route the communication cable through the hole using proper
hardware (not supplied) to secure the cable.
4.
Strip each communication cable conductor.
5.
Insert each stripped conductor into its proper location on the
communication cable connector (Refer to FIGURE B-5 for
connector location and function designation). The connector
labeled "+" on the Relay Module must be connected to the RS485
connector labeled
"+" on the Refrigerant Monitor. Likewise, the
connector labeled "-" on the Relay Module must be connected to
the RS485 connector labeled "-" on the Refrigerant Monitor.
6.
Tighten each screw within connector to secure each wire.
7.
Pull on each wire to ensure that it will remain in place. If a wire
comes out of the connector, loosen the screw, reinsert the wire,
and re-tighten the screw.
Relay Wiring
Before installing any wiring to the relays within the Chillgard RT Relay
Module, refer to the manual for the specific equipment being connected
to the relays for wiring procedures and requirements. If your unit is a
four-point Chillgard RT model, use the first four relays. The remaining
four relays within the bank are not used.
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