2. If installed, remove the remote emergency power-off connector from the remote
emergency power-off port on the rear of the uninterruptible power supply.
Remote emergency
power-off port
Remote emergency
power-off connector
Openings
3. Connect isolated, normally-open, dry contacts (rated to handle 60 Vdc
maximum, 30 Vac RMS maximum, and 20 mA maximum) to the two openings
on the remote emergency power-off connector. Use stranded, non-shielded
wiring, size 18–22 AWG (0.75 mm
2
–0 mm
2
). Tighten the two small screws on
the remote emergency power-off connector to hold the wire in place.
Note: A separate contact must simultaneously cause uninterruptible power
supply input ac power to be removed.
4. Install the remote emergency power-off connector in the remote emergency
power-off port (see the illustration in step 2).
5. Make sure that the externally-connected remote emergency power-off switch is
not activated to enable power to the uninterruptible power supply output
receptacles.
6. Connect the uninterruptible power supply to a power outlet and press the On
button.
7. Activate the external remote emergency power-off switch to test the remote
emergency power-off function.
8. De-activate the external remote emergency power-off switch and restart the
uninterruptible power supply.
Chapter 2. Installing the uninterruptible power supply in a rack or tower configuration 15
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