1800 Series User Manual
2
coMMunication interFace
reMote contacts (iBM as/00)
The remote contacts interface is a standard feature. It is provided through
solid state relays with contacts through a DB9 male connector located on the
back of the UPS. The following chart shows the signals and the connector
pinout.
Pin
Signal Function
Logic
In the UPS
1
Fault Signal
Closed when fault
detected
2
UPS stop com-
mon
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
low
Closed at voltage drop
8
UPS operation
Closed during inverter
operation
9
Power failure
signal
Closed at power failure
Voltage
Current
48 VDC peak
100 mA peak
30 VAC rms
(42 VAC peak)
70 mA rms
(100 mA peak)
DB9 Male Connector Outline
(facing connector)
1
2
3
4
5
6
7
8
9
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