14
UPS Connections
Communication Interface
Remote Contact (IBM AS/400)
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 page 44 for DB9
connector location). The following chart shows the solid state relay pin assignments for each
signal and the associated DB9 connector pinout.
1
2
3
4
5
6
7
8
9
Notes:
1) Pin "switches" are shown in their
inactive states
(if battery voltage is low pin 7 will
be connected to pin 5).
DB9 Male Connector Outline
(facing connector)
TOSHIBA
UPS operation
UPS stop common
In the UPS
Signal common
Logic
Power failure signal
Signal Function
Pin
8
2
5
9
UPS stop signal input
Bypass operation
3
6
4
Normal input power supply
1
7
Fault signal
Battery voltage drop
Closed during inverter operation
Closed during bypass operation
Closed at a voltage drop
Closed at a power failure
Common signal return
Closed with normal supply power
Closed when fault detected
Backup stop when the level
changes from Low (-3 to -15V)
to High (+3 to +15V)
1
2
3
4
5
6
7
8
9
Voltage
Current
100mAdc peak
70mAac rms
(100mA peak)
48Vdc peak
30Vac rms
(42Vac peak)
Maximum current carrying
capacity of the switch