12
1600ep Series instruction manual
Communication Interfaces
Remote Contacts
the remote contacts interface is provided as a set of solid state relay switch contacts. 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
DB9 MALE CONNECTOR OUTLINE
(FACING CONNECTOR)
Voltage
Current
48 Vdc peak
100 ma peak
30 Vac rms
(42 Vac peak)
70 ma rms
(100 ma peak)
pin
Signal Function
logic
in the UpS
1
Fault Signal
Closed when fault detected
2
UpS stop common
backup stop when the level
changes from low (-3 to -15 V) to
high (+3 to +15 V)
3
UpS stop signal input
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
NOTE
pin switches are shown in their inactive states. For example, if battery voltage is low, pin 7 will be connected to pin 5.
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