Wiring the System
29
Siemens Building Technologies
Fire Safety & Security Products
09.2008
7.3
Wiring the Relay Output
The SPC Controller has one on-board 1-Amp single pole changeover relay that
can be assigned to any of the SPC system outputs. This relay output can switch a
rated voltage of 30 V DC (non-inductive load).
When the relay is activated the Common terminal connection (COM) is switched
from the Normally Closed terminal (NC) to the Normally Open terminal (NO).
1
Normally Open terminal (NO)
2
Common terminal connection (COM)
3
Normally Closed terminal (NC)
Fig. 10
Standard Wiring
