Specifications

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4-2 Dry Contact
Its major functions normally some or all of following:
1. To broadcast a warning when power fails.
2. To close the files before the battery is exhausted.
3. To turn off the UPS via computers.
Pin1
The pin is normally open. When battery low, pin1 and
pin5 are connected via photo coupler.
Pin3
On Battery mode, the UPS will shut down when a high
level voltage (5~12V) sustained for at least 3.8 seconds
is applied.
Pin5 Signal ground.
Pin6, 7 Reserved.
Pin8
The pin is normally open. When utility fails, pin8 and pin5
are connected via photo coupler.
Cabling:
The users must use the special cable. The connection is described as follows:
PC (female) UPS (male)
Pin1------------------Pin1 (battery Low)
Pin3------------------Pin5 (GND)
Pin4------------------Pin3 (Shutdown)
Pin7------------------Pin6
Pin7------------------Pin7
Pin8------------------Pin8 (AC Fail)
The communication port on the rear panel of the UPS may be connected to a
computer. This port allows the computer to monitor the UPS and control the
operation of the UPS in some cases.
Some computers may have a special connector to link this communication port, or
require a special plug-in card, or need special UPS monitoring software. Contact
your dealer for details of different interface kits.
Caution:
Every time when you connect your UPS and computer, please make sure the utility
exists.
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