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Digital Energy™ GT Series

 

4 - Communication

4.1Description

The GT Series UPS is equipped with a communications interface, providing RS232 and dry contact protocols in one sub -D 9-pin female connector located at the rear of the unit. The communication port on the UPS can be connected to a computer. This port allows the computer to monitor the UPS status and control the operation of the UPS in some conditions. Using proper UPS management software and cable, the UPS can be managed in LAN/intranet/internet environments.

Some computers may have a special connector to link this communication port, or require a special plug -in card, or need a special UPS monitoring software. For specific information on Digital Energy™ GT Series connectivity products please contact your local dealer or Internet:

http://www.geindustrial.com/cwc/products?famid=46&lang=en_US

The dry contacts (4.3) and (optional) SNMP plug -in card (4.4) can be connected at the same time. However, if both are operating simultaneously the remote shutdown facility for the dry contacts will not be available. Battery low and AC failure functions remain unaffected.

The pin assignment of the interface connector is defined as follows:

PIN

ASSIGNMENT DESCRIPTION

 

 

RS-232

Dry Contact

 

 

 

 

1

 

Low battery (Open collector)

 

 

 

2

UPS TxD (typical RS-232 level)

 

 

 

 

3

UPS RxD (typical RS-232 level)

Remote shutdown (5~12V)

 

 

 

4

Reserved for PNP

 

 

 

 

5

GND

GND

 

 

 

6

Reserved for PNP

Reserved

 

 

 

7

Reserved for PNP

Reserved

 

 

 

8

 

Utility Fail (Open collector)

 

 

 

9

 

 

 

 

 

Pin Assignment

Open Collector Circuit

The maximum voltage and current on pin 1,8 is 30VDC, 10mA.

OPM_GTU_TWR_1K0_3K0_XUS_V015

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DE GT Series: User manual rev date 8-11- 04