How to Connect an EPO Switch to the ATS

Connect an EPO switch to the user interface board and test the switch

1.Connect the switch to the EPO connection terminals on the user interface board. Read the label next to the terminal block to determine which terminals correspond to your signal type:

Contact Closure—Normally Open

USER INTERFACE

© 2001 APC

MADE IN USA

1

2

3

4

 

Contact Inputs

 

Contact Outputs

ATS 0 ATS 1 ATS 2

External set of Normally Open

Voltage-free Contacts

EN

– +

 

ATS

EPO 24V

EPO

AC/DC

Contact

– Contact Closure—Normally Closed

USER INTERFACE

© 2001 APC

MADE IN USA

1

2

3

4

 

Contact Inputs

 

Contact Outputs

External set of Normally Open

Voltage-free Contacts

ATS0 ATS1 ATS2

ATSEN

– +

Contact

AC/DC

 

 

EPO 24V

EPO

24VAC/VDC—Normally Open

USER INTERFACE

© 2001 APC

MADE IN USA

1

2

3

4

 

 

Contact Outputs

 

 

Contact Inputs

 

 

 

 

External set of

Normally Open Voltage-free Contacts

24 VAC or 24 VDC Power Supply

ATS0 ATS1 ATS2

ATSEN

– +

Contact

AC/DC

 

 

EPO 24V

EPO

2.Verify that the EPO DIP switches on the ATS monitoring unit are configured properly for your signal type. The labels above the switches and the figure below show the correct settings for both the Normally Open (NO) and Normally Closed (NC) configurations.

Location of switches on ATS monitoring unit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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InfraStruXure Power Generation System

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