Liebert UPS System user manual Connector Name of contacts Board name Input/output

Chapter 3 Electrical Assemble

Connector		Name of contacts					Board name		input/output
	Central contacts for overload						OVR-S		output
	Normally		open		contacts	for	OVR-O		output
	overload
J12
	Normally		closed		contacts	for	GEN-C		output
J13	generator mode
J14
	Central		contacts		for generator		GEN-S		output
	mode
	Normally		open		contacts	for	GEN-O		output
	generator mode
	+24V	power		for	environmental		+24V		power output
	signal
	24V	power		for	environmental		ENV1		connect to dry
	signal 1								contacts
J17
	24V	power		for	environmental		ENV2		connect to dry
	signal 2								contacts
	24V	power		for	environmental		ENV3		connect to dry
	signal 3								contacts
	+12V	power		for	environmental		+12V		power output
	signal
J16	12V environmental signal						ENV		connect to dry
									contacts
	NC						NC
	Ambient temperature input						V-AD		0~5V signal input
	Dry contacts H of generator						GEN-H	connect to dry contacts
	Dry contacts L of generator						GEN-L		connect to dry
									contacts
J18
	Emergency shutdown H						UCTRH		connect to dry
									contacts
	Emergency shutdown L						UCTRL		connect to dry
									contacts
	NC						NC
J15	Power Source of Sensor						＋12V		power output
	Battery Temperature						BAT-T		0~5V signal input
	GND of Sensor						GND		power output

Terminals J9~J14 are the dry contacts for monitoring that can be used by users. The relays have central contacts.

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