Emerson liebert gxt5000r-208 User Manual

Do not exceed NEC Class 2 limits for any connection to the DB-25 connector on the Relay 

Interface card, the DB-9 communication port, and the EPO connector.

Your GXT5000R-208 comes equipped with the RELAYCARD-INT relay card. Connections 

must not exceed NEC Class 2 limits.
The Intellislot

®

 Interface for Relay Contacts card provides contact closures for remote moni-

toring of alarm conditions in your Liebert UPS, delivering signals for On Battery, On Bypass, 

Low Battery, Summary Alarm, UPS Fault and On UPS.
The contacts are rated for 24 VAC or DC at 1A.

1

UPS Fault 

Closed if no UPS failure

2

Not Used

—

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

Signal Ground (for UPS Any Mode Shutdown)

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

Not Used

—

13

Not Used

—

14

UPS Any Mode Shutdown (short to pin 7)

Not utilized on GXT5000R-208 - See EPO section

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

Not Used

—

20

Not Used

—

21

Not Used

—

22

Not Used

—

23

Not Used

—

24

On Bypass 

Closed if ON BYPASS

25

Not Used

—

A Summary Alarm occurs when any of the following four conditions exist:
1. Utility power is out of the acceptable range (voltage and/or frequency).
2. UPS is in BYPASS MODE (load not on Inverter power).
3. UPS Battery is LOW (< 2 minutes of battery power remaining).
4. UPS fault has occurred.