APC InfraStruxure Specifications download pdf (Page 28)

Installation Procedures: Connect an Emergency Power Off Switch

20 InfraStruXure System—Installation and Start-Up

3. Test the EPO switch to ensure that it is wired and working correctly:

a. Place the Arm/Test rocker switch in the Tes t position. The EPO state LEDs will be off and

the PDU display interface will show the following alarm (in addition to any other active

alarms):

b. Engage the EPO switch. (If your switch is momentary, engage it with one person watching

the EPO state LEDs, and another at the EPO switch.)

c. Observe the EPO LEDs. If the switch is wired and working properly, when the switch is

engaged, both of the EPO state LEDs are red.

d. If the test was successful, place the Arm/Test rocker switch back to the Arm position. The

PDU display interface will clear the EPO test mode alarm. If the test was not successful, see

the troubleshooting chart:

e. Repeat this test for each EPO switch installed.

4. Ensure that the Arm/Test rocker switch is in the Arm position on the monitoring unit.

Problem Action

Neither state LED was red when

EPO switch was engaged

• Check the wiring to your EPO switch.

• Check to make sure the EPO DIP switch

configuration is correct for your switch

(NO or NC). See step 2 on the previous page for

proper configuration instructions.

Only one of the state LEDs was

red when EPO switch was

engaged

• Check to make sure the EPO DIP switch

configuration is correct for your switch

(NO or NC) and test again. See step 2 on the

previous page for proper configuration

instructions.

• If the switch is configured correctly and both

LEDs are not red after testing again, contact

customer support at a number on the back cover

of this manual.

EPO Ready To Test

Active Alarm xxofxx

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APC InfraStruxure Specifications Page 28