3 Installation
US SENTRY io 21
3.8 Relay Outputs
NOTICE
To avoid risk of fire or property damage, always use a limited current source or connect a current limiting device in series
with the relay contacts.
To increase the lifespan of the relay contacts and protect the module from potential damage by reverse EMF, connect:
l
A clamping diode in parallel with each inductive DC load.
l
An RC snubber circuit in parallel with each inductive AC load.
DC Load AC Load
Refer to the Installation Outline drawing (SK3015-1071) for additional details on the relay outputs.
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