Versiton SF70460MP, Installation Manual

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Note:
1. Only up to four device units can be daisy-chained to receive power from one main power input source.
2. The maximal length of the power wire is 1 meter.
2.6 Alarm Relay Output
Alarm relay output is provided for reporting failure events to a remote alarm relay monitoring system. The relay
output is provided with three contacts (supporting two logic types) in the terminal block connector next to the
Vdc connections.
Alarm Relay output pins and logic:
Pin
4 5 Alarm relay output, NO (Normal Open) contacts
Open: normal, Shorted: Alarm
NO NO
Pin
5 6 Alarm relay output, NC (Normal Closed) contacts
Shorted: normal, Open: Alarm NC NC
Either pair can be used depending on the logic requirement for the relay monitoring system.
Use the provided 3P terminal plug for signal wiring and plug into the contacts.
Alarm Events

Input power failure

Specific port link down (The specific ports can be configured by software.)
Note: Be sure the voltage applied on the contacts is within the specification of 30VDC/1A max. or 120VAC/0.5A
max.