Liebert NX UPS System Multiport-4 Card, Relay Card pin configuration, Relay card jumpers

Options—For Assembly Inside the UPS Cabinet

8.1.4Relay Card

The Relay card provides voltage-free contact closures for remote monitoring of alarm conditions.

Delivering On Battery, On Bypass, Low Battery, Summary Alarm, UPS Fault and On UPS signals, the easy-to-install card integrates with AS/400 computers (additional cable required) and other relay contact monitoring systems.

The Relay card is rated for 24 VAC/VDC at 1A and supported in any of the three NX Intellislot bays.

Table 25 Relay Card pin configuration

Pin	Function	Operation
1	UPS Fault	Closed if no UPS failure
2-3	Not Used
4	UPS Fault	Closed if UPS fails
5	Summary Alarm**	Closed if SUMMARY ALARM** occurs
6	Summary Alarm**	Closed if no alarm conditions are present
7	Any Mode Shutdown return	Not Supported– use External EPO terminal
8	Not Used
9	Common - Low Battery
10	Low Battery	Closed if battery is OK
11	Low Battery	Closed if LOW BATTERY point occurs.
12-13	Not Used
14	UPS Any Mode Shutdown	Not supported– use External EPO terminal
15	On UPS	Closed if ON UPS (inverter) power
16	On Battery	Closed if ON BATTERY power (Utility failure)
17	Common - UPS Fault, Summary Alarm,
	On UPS, On Battery, On Bypass
18	On Battery	Closed if not ON Battery power (Utility OK)
19 ÷ 23	Not Used
24	On Bypass	Closed if ON BYPASS
25	Not Used

**A Summary Alarm occurs when any of the following conditions exist:

•Utility power is out of the acceptable range (voltage and/or frequency)

•UPS is in BYPASS MODE (load not on Inverter power)

•UPS Battery is LOW

•UPS fault has occurred

Table 26 Relay card jumpers

#	Connection	Description
JP01	Pin 9 to Pin 17	Allows all relay COMMONS to be tied together.
JP02	Pin 7 to Pin 17	Irrelevant for NX - (Interconnects all relay COMMONS and the (not
		supported) ANY MODE SHUTDOWN Return.

8.1.5Multiport-4 Card

The Multiport-4 card provides 4 sets of voltage-free contact closures for remote monitoring of alarm conditions UPS operation On Battery and battery low condition. A typical application is to allows a maximum of four computer systems to simultaneously monitor the status (e.g., utility power failure / low battery) of a single UPS.

This card is supported in any of the three NX Intellislot bays.

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