Acre SPC42 - Wiring the System Ground; Wiring the Relay Output

Wiring of a branch expander
Number Description
1 Previous expander
2 Expander connected to branch
3 Next expander
4 Expander with branch
9.3 Wiring the system ground
0V of Smart PSU's, Keypads and Expanders must be connected to the SPC controller 0V (System
GND).
9.4 Wiring the relay output
The SPC controller has two on-board 1A single pole changeover relays that can be assigned to any of
the SPC system outputs. The relay outputs can switch a rated voltage of 30V DC (non-inductive load).
When a relay is activated the common terminal connection (COM) is switched from the Normally Closed
terminal (NC) to the Normally Open terminal (NO).
SPC42/52/53/63 – Installation & Configuration Manual Wiring the system
© Vanderbilt 2023 44 I-200572
08.12.2023