Relay Card; Multiport-4 Card; Table 25 Relay Card Pin Configuration; Table 26 Relay Card Jumpers - Liebert NX User Manual

Options—For Assembly Inside the UPS Cabinet
8.1.4

Relay 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
1 UPS Fault
2-3 Not Used
4 UPS Fault
5 Summary Alarm**
6 Summary Alarm**
7 Any Mode Shutdown return
8 Not Used
9 Common - Low Battery
10 Low Battery
11 Low Battery
12-13 Not Used
14 UPS Any Mode Shutdown
15 On UPS
16 On Battery
17 Common - UPS Fault, Summary Alarm,
On UPS, On Battery, On Bypass
18 On Battery
19 ÷ 23
Not Used
24 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
JP01 Pin 9 to Pin 17
JP02 Pin 7 to Pin 17
8.1.5

Multiport-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.
Operation
Closed if no UPS failure
Closed if UPS fails
Closed if SUMMARY ALARM** occurs
Closed if no alarm conditions are present
Not Supported– use External EPO terminal
Closed if battery is OK
Closed if LOW BATTERY point occurs.
Not supported– use External EPO terminal
Closed if ON UPS (inverter) power
Closed if ON BATTERY power (Utility failure)
Closed if not ON Battery power (Utility OK)
Closed if ON BYPASS
Description
Allows all relay COMMONS to be tied together.
Irrelevant for NX - (Interconnects all relay COMMONS and the (not
supported) ANY MODE SHUTDOWN Return.
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