RC Systems 10-0517, Operation Manual

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UM-1096
Revision A 8
3.4.2 SensePoint Relay Option
The SensePoint Relay option ( Figure 5 ) includes three programmable relays and a single programmable
RS 485 Modbus master or slave port. The relay labeled “FAILSAFE” is set up as a failsafe Fault relay by
default but can be configured as a programmable relay in the Relay Settings menu. It is possible to use
only the relays, only Modbus or both.
The relay terminals are labeled NO (Normally Open), NC (Normally Closed) or C (Common, or pole).
These designators correspond to the shelf, or de-energized, state of the relays. When a relay is in
Failsafe mode, it is energized when the alarm condition is not met, and therefore its action is reverse of
the designators.
For the RS-485 Modbus master/slave port, connect your Modbus communication wires to terminals
TB1.A and TB1.B, and connect your shield wire to TB1.SHLD.
TB1 – RS485 Modbus Master/
Slave Port
TB2 – Relay Terminals
TB
2
A B S
TB1
RL
Y 1
RL
Y 2
FL
T
Figure 5 SensePoint Relay Option Wiring