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2 relay card, Table 28 relay card pin configuration, Relay card – Emerson Liebert NX 50 and 60 Hz User Manual

Page 124: Table 28, Relay card pin configuration, Table 29

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Options—For Assembly Inside the UPS Cabinet

112

9.2.2

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.

**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 28

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 – 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 support– 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

Table 29:

#

Connection

Description

JP01

Pin 9 to Pin 17

Allows all relay COMMONS to be tied together.

JP02

Pin 7 to Pin 17

REMOVE

- (Interconnects all relay COMMONS and the (not supported)

ANY MODE SHUTDOWN Return.

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