How to test C-Bus General Input Channels?

To test each channel on a C-Bus General Input Unit, you simply need to:
1. Remove the plug pack and C-Bus power from the unit.
2. Take a multimeter and set it to a resistance range that can read up to 1 kW.
3. Take one of the multimeter probes and connect it to any of the Vdc Out COM
connections, as shown in the figure below.
4. Place the other multimeter probe on the common terminal of each
Changeover Relay (labelled 1, 2, 3 or 4) as shown in the figure below.
5. The multimeter should read a resistance of approximately 250 W. If you have
any other reading, the channel may be faulty.

Released for:Schneider Electric Australia