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SRC-131 Hotel Controller Manual
6
Com – 0V
0V terminal - Used for 0-10V, sensor or digital inputs ground reference
A
Modbus Data A
B
Modbus Data B
SI
Remote temperature sensor input (Remote / average / Modbus data use)
DI
Digital (Switched input) for forced un-occupied or initiate doorbell function
WC
Window Contact - Forces SRC-131 OFF if window open > 5 min (Adjustable)
DS
Door Switch – Monitors room door status for occupancy detection
(see page 11)
PIR
PIR ( Movement sensor) input for occupancy detection (see page 11)
The SRC-131 is powered by 24VAC and requires the 24VAC active and neutral to be connected to the “R”
(active) and “C” (Neutral) terminals for the SRC-131 to function. The 24VAC applied to the SRC-131 “R”
terminal is switch back through the 2A relays to the equipment. Note the drawing provided here.
Caution
-
Although the SRC-131 is a robust device, wiring errors can potentially damage the
thermostat. This damage is NOT covered by warranty. Take care when wiring 24V near sensor
inputs or the Modbus communications terminals.
4
Wiring Examples
