This pin is shorted to PIN 5 (ground) if the mains power supply fails or is out of tolerance. (NORMALLY OPEN)
2
-
-
-
3
-
-
-
4
-
-
-
5
Ground
-
Ground terminal and common root of contacts at PIN 1, 8 and 9
6
-
-
-
7
UPS shut-down
IN
If a positive signal level (+5V to +12V DC) is applied, the UPS system switches off (PIN 5 is ground)
8
Battery Capacity Low
OUT
This pin is shorted to PIN 5 (ground) if the batteries have been discharged to such an extent that the remaining stored energy time is less than 2 minutes. (NORMALLY OPEN)
9
Battery Mode
OUT
The connection between this pin and PIN 5 (ground) is disconnected if the main power supply fails oe is out of tolerance. (NORMALLY CLOSED)
(at the UPS)