
Wiring of a branch expander
Number
Description
1
Previous expander
2
Expander connected to branch
3
Next expander
4
Expander with branch
10.3 Wiring the system ground
0V of Smart PSU's, Keypads and Expanders must be connected to the SPC controller 0V (System GND).
10.4 Wiring the relay output
The SPC controller has one on-board 1A single pole changeover relay that can be assigned to any of the
SPC system outputs. This relay output can switch a rated voltage of 30V DC (non-inductive load).
When the relay is activated the common terminal connection (COM) is switched from the
N
ormally
C
losed
terminal (NC) to the
N
ormally
O
pen terminal (NO).
SPC4xxx/5xxx/6xxx – Installation & Configuration Manual
Wiring the system
© Vanderbilt 2018
84
A6V10276959-d
11.2018