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Communication Interfaces
Remote Contacts
the remote contacts interface is provided as a set of solid state switching devices. the switches are
available through a db9 male connector on the rear of the UpS. the following chart shows the pin
assignment for each signal.
MAxIMUM CURRENT CARRYING CAPACITY
OF THE SWITCH
Voltage
48 Vdc peak
30 Vac rms
(42 Vac peak)
Pin
Signal Function
1
Fault Signal
2
UpS stop common
3
UpS stop signal input
4
normal input power supply
5
Signal common
6
bypass operation
7
battery voltage drop
8
UpS operation
9
power failure signal
NOTE:
pin switches are shown in their inactive states. For example, if battery voltage is low, pin 7 will be connected to pin 5.
16
Current
70 mA peak
50 mA rms
(70 mA peak)
Logic
Closed when fault detected
backup stop when the level
changes from low (-3 to -15 V) to
High (+3 to +15 V)
Closed with normal supply power
Common signal return
Closed during bypass operation
Closed at voltage drop
Closed during inverter operation
Closed at power failure
DB9 MALE CONNECTOR OUTLINE
(FACING CONNECTOR)
In the UPS
1600Xp Series installation and operation manual
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