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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 sig- nals, 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/DC at 1A and supported in any of the three Liebert IntelliSlot bays on the Liebert NX.

Table 22 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:

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.

4.UPS fault has occurred.

Table 23 Relay card jumper configuration

Number

Connection

Description

JP01

Pin 9 to Pin 17

Allows all relay COMMONS to be tied together.

 

 

 

ANY JP02

Pin 7 to Pin 17

REMOVE - (Interconnects all relay COMMONS and the (not

 

 

supported) MODE SHUTDOWN Return

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Emerson 480V user manual Relay Card pin configuration, Relay card jumper configuration, Pin Function Operation
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480V specifications

The Emerson 480V power systems play a critical role in modern industrial applications, providing reliable and efficient power distribution. These systems are designed for facilities that require robust performance and operational efficiency while adhering to safety regulations. With voltage ratings at 480V, they cater primarily to industries such as manufacturing, data centers, and commercial buildings.

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The Emerson 480V systems also incorporate advanced technologies for improved performance and safety. One key technology is the use of smart grid solutions. This enables real-time monitoring, diagnostics, and control, allowing facility managers to optimize energy consumption and reduce operational costs. Furthermore, these systems often include integrated protection devices that enhance safety measures by minimizing the risk of electrical faults, overloads, or short circuits.

Energy efficiency is another characteristic that distinguishes Emerson 480V systems from traditional alternatives. With advanced power management features, these systems effectively reduce energy waste and lower electricity bills. Emerson’s commitment to sustainability is evident in its designs, which aim to minimize environmental impact through energy-efficient technologies.

The build quality of Emerson 480V systems is also noteworthy. They are designed to withstand harsh industrial environments and are constructed with high-grade materials that promote longevity and reliability. The modular design allows for easy maintenance and repair, which further extends the lifespan of the system.

Additionally, Emerson 480V systems are equipped with user-friendly interfaces that facilitate ease of operation. This ensures that operators can efficiently manage and control power distribution without extensive training. The combination of performance, scalability, safety features, and user-centric design makes Emerson 480V systems an ideal choice for businesses looking to enhance their electrical infrastructure.

In summary, Emerson 480V power systems are a leading solution for industrial power distribution, characterized by their scalability, smart technology integration, energy efficiency, robust build quality, and user-friendly operation. These attributes make them a valuable investment for any organization aiming to improve its electrical management and operational performance.
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