Features

DB-9 Communication Port

Powerware offers an accessory interface kit that allows you to connect many types of computer systems to the UPS communication port. For specific information on Powerware interface kits, call your service representative.

Contacts consist of open collector circuits capable of switching up to +30 Vdc, 6 mA resistive load.

Table 1. Communication Port Pin Assignment

Pin

Signal Type

Function

 

 

 

 

 

 

 

1

RS-232 Level Shutdown

+12 Vdc signal held for 5 seconds on this pin shuts the UPS down

 

 

120 seconds later. The UPS restarts after 15 seconds when utility

 

 

power returns.

 

 

 

 

2

Not Used

Not Used

 

 

 

 

3

Normally Open On-Battery Contact

A normally open contact that closes 15 seconds (pulls to

 

 

Common) after the UPS switches to battery power.

 

 

 

 

4

Common

The signal ground for all signal pins.

 

 

 

 

5

Normally Open Low-Battery-Alarm Contact

A normally open contact that closes (pulls to Common) during a

 

 

Low Battery Alarm.

 

 

 

 

 

6Normally Closed Low-Battery-Alarm Contact A normally closed contact that opens (releases from Common) during a Low Battery Alarm. This tells some shutdown software when to start a computer shutdown.

7

Not Used

Not Used

 

8

Normally Closed On-Battery Contact

A normally closed contact that opens 15 seconds (releases from

 

 

Common) after the UPS switches to battery power.

 

 

 

 

9

Not Used

Not Used

 

 

 

 

6

Powerware3110 User’s Guide S Rev B www.powerware.com

 

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