Ametek 420VA Manual page 19

configuration and connector style necessary to attach the cable to the
computer.
Pin Description
1 Low Batt - RS232 Level
2 RS232 RX
3 RS232 TX
4 Inverter Shutdown during AC Fail
5 Ground
6 AC Fail - RS232 Level
7 AC Fail - Simulated NO Contact (programmable)
8 Low Batt - Simulated NO Contact (programmable)
9 Simulated Contact Ground
NOTE:
Pin 5 should only be connected to ground.
NOTE:
You may, of course, connect your computer to the UPM without
using software. When power is lost, the UPM will beep and you will
have to manually shut down the computer and UPM.
Start Manager
When AC power is not available, such as in a new installation where
wiring may be incomplete, you can still start the UPM to test its operation
and the operation of your system using Start Manager. With the UPM off,
follow these simple steps:
1. Disconnect the input AC power cable from the AC mains.
2. Ensure that the batteries are connected behind the front panel.
3. Press and hold the On/Off switch on the front panel until the UPM
beeps.
4. The UPM is now running on battery. When you have finished,
press the On/Off switch again. Plug the input AC power cable into
the rear panel of the UPM.
A01-00055 Rev G
DB-9 Definition for UPM
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