23
PIN ASSIGNMENT FOR THE FALCON
UA88373 OPTO-COUPLER OPTION BOARD
(no-bypass signal)
PIN
DESCRIPTION
1
Not Used
2
Utility Loss (N.O.) (Closes upon utility loss)
3
Utility Loss (N.C.) (Opens upon utility loss)
4
Common for pins 2, 3 & 5
5
Low Battery (N.O.) (Closes at low battery)
6
Remote Shutdown
Applying a +5-+12Vdc voltage level for >500ms,
while the UPS is on battery will shutdown the
UPS
7
Not Used
8
Not Used
9
Not Used
Typical Falcon Opto-coupler Interface Card
(A)
(E)
(K)
(B)
(C)
6
7
8
2
3
4
5
To CPU
Alarm Signal
DB-9
Low Battery Signal
Utility Loss
OPTO Board Internal Circuitry
