Operation

Isolated Alarm Relay Interface

The isolated alarm relay interface uses a 15-pin, male, 42D-sub connector.

 

1

2

3

4

5

6

7

8

 

 

9

10

11

12

13

14

15

 

Figure 21. 15-Pin Serial Port

 

Relay Interface of Powerware 9150

 

Pin No. Connection

System State

 

 

 

Utility Failure

1 - 2 Closed

Line normal

 

 

 

 

1 - 3 Closed

Line failure

 

 

 

Low Battery

4 - 5 Closed

Battery normal

 

 

 

 

4 - 6 Closed

Battery low

 

 

 

UPS on Bypass

10 - 11 Closed

On UPS

 

 

 

 

 

10 - 12 Closed

On Bypass

 

 

 

 

UPS On or

7 - 9 Closed

UPS on

 

 

 

 

UPS Alarm

7 - 8 Closed

UPS alarm

 

 

 

 

UPS Shutdown

13 - 15 Closed

UPS shutdown when operating in Battery Mode. UPS can be shut down

(in Battery Mode only)

 

by sending a hi-level signal (+5V to +15V) to Pin 15(+) and 14(-), or by

 

 

connecting Pin 15 to Pin 13. This signal must be present for a minimum

 

 

of 5 seconds.

 

 

 

NOTE The relay contacts are rated for a maximum 1A/30 Vac or 0.2A/60 Vdc. All relay outputs are isolated from the other circuits of the UPS. The relay contacts must not be connected to any utility connected circuits. Reinforced insulation to the utility is required.

Powerware® 9150 User’s Guide : www.powerware.com

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