KMC Controls
Revision J
Installing the controllers
Connecting power
20
Connecting power
The controllers require an external, 24 volt, AC power source. Use the following
guidelines when choosing and wiring transformers.
◆
Use a KMC Controls Class–2 transformer of the appropriate size to supply
power to the controllers.
◆
When installing a controller in a system with other controllers, you may
power multiple controllers with a single transformer as long as the total
power drawn from the transformer does not exceed its rating and phasing is
correct.
◆
If several controllers are mounted in the same cabinet, you can share a
transformer between them provided the transformer
does not exceed
100 VA
or any regulatory requirements.
◆
Do not run 24 volt, AC power from within an enclosure to external
controllers.