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Installation Procedures: Connect an Emergency Power Off Switch
InfraStruXure System - Installation and Start-Up 23
Connect an EPO switch to the user connection plate
1. Connect the switch to the EPO connection point terminals located on the bottom side of the PDU
user connection plate. Read the label next to the terminal block to determine which terminals to
connect to for the signal type you are using:
– Contact Closure—Normally Open
– Contact Closure—Normally Closed
– 24Vac/Vdc—Normally Open
2. Verify that the EPO DIP switches on the PDU monitoring unit are configured properly for the signal
type you are using. The labels above the switches and the figure below show the correct settings for
both the Normally Open (NO) and Normally Closed (NC) position.
See the Operation Manual for information on how to test the EPO.
External set of
Normally Open Dry Contacts
External set of
Normally Closed Dry Contacts
24V AC or DC Power Supply
External set of
Normally Open Dry Contacts
Location of switches
on PDU monitoring unit