TOSHIBA
14
UPS Connections
Communication Interfaces
Remote Contacts
The remote interface is a standard feature and is available as solid state relay switch
Contacts through a DB9 male connector located on the back side of the UPS (see pages 45-
46 for DB9 connector location). The following chart shows the solid-state relay pin
assignment’s for each signal and the associated DB9 connector pinout.
Pin
Signal Function
Logic In the UPS
1 Fault Signal Closed when fault detected
2 UPS stop common
3 UPS stop signal input
Backup stop when the level
changes from Low (-3 to – 15V)
to High (+3 – +15V)
4 Normal input power supply Closed with normal supply power
5 Signal common Common signal return
6 Bypass operation Closed during bypass operation
7 Battery voltage drop Closed at voltage drop
8 UPS operation Closed during inverter operation
9 Power failure signal Closed at power failure
Notes:
1) Pin "switches" are shown in their inactive states. If battery voltage is low, pin 7 will
be connected to pin 5.
Maximum current carrying
capacity of the switch
Voltage Current
48Vdc Peak 100mAdc
peak
30Vac rms
(42Vac peak)
70mAac rms
(100mA peak)
1 2 3 4 5
6 7 8 9
DB9 Male Connector Outline
(facing connector)
1
2
3
4
5
6
7
8
9
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