Customizing and Updating the PDU
4.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 | • Check the wiring to your EPO switch |
when the EPO switch was | • Check to make sure the EPO DIP |
engaged | switch configuration is correct for |
| your switch (NO or NC). |
|
|
Only one of the state LEDs | • Check to make sure the EPO DIP |
was red when the EPO switch | switch configuration is correct for |
was engaged | your switch (NO or NC) and test |
| again. |
| • 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. |
|
|
5.Repeat this test for each EPO switch installed.
6.Ensure that the Arm/Test rocker switch is in the Arm position on the monitoring unit.
Safety warnings
Hazardous voltage from the branch circuit must be isolated from the 24VAC, 24VDC, and contact closure. 24VAC and 24VDC are considered Class 2 circuits as defined in Article 725 of the National Electrical Code (NFPA 70) and Section 16 of the Canadian Electrical Code (C22.1).
A Class 2 circuit is a source having limited voltage and energy capacity as follows:
a.If an Inherently Limited Power Source, voltage and energy are limited to less than 30VAC, less than 30VDC, and 8A.
b.If not an Inherently Limited Power Source, voltage and energy are limited to less than 30VAC, less than 60VDC, 250VA, and the current is limited to 1000/Vmax. The fuse is limited to 5A if less than 20VAC or 20VDC, or 100/V maximum if less than 30VAC or 60VDC.
80kW InfraStruXure | 61 |
