Increasing Contact Life Span
To increase the life span of the relay output contacts and protect the
device from potential damage by reverse EMF, connect:
• a clamping diode in parallel with each inductive DC load
• an RC snubber circuit in parallel with each inductive AC load.
O0 Zone 1 Alarm O5 Zone 6 Alarm
O1 Zone 2 Alarm O6 Zone 7 Alarm
O2 Zone 3 Alarm O7 Zone 8 Alarm
O3 Zone 4 Alarm O8 Zone 9 Alarm
O4 Zone 5 Alarm O9 Horn Relay
Figure 4-3. Relay Outputs
4-6
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