Hitachi CP-X200 instruction manual Power Run Mode AL0-AL1 AL0-AL2 Normal

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The alarm relay output can be configured in two main ways:

ξTrip/Power Loss Alarm – The alarm relay is configured as normally closed (C036=1) by default, shown below (left). An external alarm circuit that detects broken wiring also as an alarm connects to [AL0] and [AL1]. After powerup and short delay (< 2 seconds), the relay energizes and the alarm circuit is OFF. Then, either an inverter trip event or an inverter power loss will de-energize the relay and open the alarm circuit

ξTrip Alarm – Alternatively, you can configure the relay as normally open (C036=0), shown below (right). An external alarm circuit that detects broken wiring also as an alarm connects to [AL0] and [AL2]. After powerup, the relay energizes only when an inverter trip event occurs, opening the alarm circuit. However, in this configuration, an inverter power loss does not open the alarm circuit.

Be sure to use the relay configuration that is appropriate for your system design. Note that the external circuits shown assume that a closed circuit = no alarm condition (so that a broken wire also causes an alarm). However, some systems may require a closed circuit = alarm condition. In that case, then use the opposite terminal [AL1] or [AL2] from the ones shown.

	N.C. contacts (C036=01)				N.O. contacts (C036=00)
During normal operation		When an alarm occurs or During normal operation				When an alarm occurs
		when power is OFF		or when power is OFF
AL0 AL1 AL2		AL0 AL1 AL2		AL0 AL1 AL2		AL0 AL1 AL2
Power	Load	Power	Load	Power	Load	Power	Load
supply		supply		supply		supply

Power	Run Mode	AL0-AL1 AL0-AL2		Power	Run Mode	AL0-AL1 AL0-AL2
ON	Normal	Closed	Open	ON	Normal	Open	Closed
ON	Trip	Open	Closed	ON	Trip	Closed	Open
OFF	–	Open	Closed	OFF	–	Open	Closed

Monitoring	Operationsand
Monitoring	Operationsand