American Power Conversion PD60H5HK1, PDRPPH1000 manual On the previous page for proper

Customizing and Updating the PDU

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:

Problem	Action
Neither state LED was red when	• Check the wiring to your EPO switch.
EPO switch was engaged	• Check to make sure the EPO DIP
	switch configuration is correct for your
	switch (NO or NC). See step 1 on the
	previous page for proper configuration
	instructions.
Only one of the state LEDs was	• Check to make sure the EPO DIP
red when the EPO switch was	switch configuration is correct for your
engaged	switch (NO or NC) and test again. See
	step 1 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.

e. Repeat this test for each EPO switch installed.

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

Emergency Power Off (EPO)

This InfraStruXure PDU is provided with an Emergency Power Off switch connection. When this EPO switch is energized, electrical power to the units is de-energized and the system will not transfer to on-battery operation.

EPO can be achieved with either a contact closure or application of an external 24VAC or 24VDC from a SELV or PELV source. It’s important to note that hazardous voltage from the Mains voltage must be isolated from the contact closure or 24 VAC, 24 VDC. The EPO circuit contact closure, the 24VAC or the 24VDC are considered a SELV circuit as defined in EN 60950 Safety of Information Technology Equipment or PELV circuit as defined in IEC 60364-4-41 Electrical Installations of Buildings, Protection for Safety—Protection Against Electric Shock. SELV is an abbreviation for Safety Extra Low Voltage. PELV is an abbreviation for Protective Extra Low Voltage. SELV and PELV circuits are isolated from the Mains through a safety isolating transformer, and are designed so that under normal conditions the voltage is limited to 42.4 Vpeak or 60VDC.

60kW InfraStruXure PDU—Operation and Configuration 51