APC 150kVA PDU W/ 480 PRI 208/120 SEC K1 XMER Specifications download pdf (Page 27)

Installation Procedures: Connect an Emergency Power Off Switch

150 kW InfraStruXure Power Distribution Unit 19

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

a. Place the Arm/Test rocker in the Test 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 while one person is watching

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

c. Observe the EPO LEDs. If the switch is wired correctly and working properly, both of the

EPO state LEDs will light red when the switch is engaged.

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

display interface will clear the EPO test mode alarm. If the test was not successful, refer to

the following troubleshooting chart:

e. Repeat this test for each EPO switch installed.

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

Problem Action

Neither state LED was lit red when the

EPO switch was engaged.

• Check the wiring to the 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 lit red

when the EPO switch was engaged.

• Check to make sure the EPO DIP switch

configuration is correct for your switch (NO or NC)

and retest. See step 2 on the previous page for

proper configuration instructions.

• If the switch is configured correctly and both LEDs

still do not light red after retesting, contact

customer support at a number appearing on the

back cover of this manual.

EPO Ready To Test

Active Alarm xxofxx

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APC 150kVA PDU W/ 480 PRI 208/120 SEC K1 XMER Specifications Page 27