Search FAQs

You are currently viewing the content available in Vietnam. If you are looking for information for another region, please select the correct country from the top-left dropdown in the page and 'Navigate to Browse FAQs' in the Support menu.

How do I troubleshoot an ATS48 soft starter with no +24vdc power supply?

Issue:
ATS48 soft starter with no +24vdc power supply

Product Line:
Altistart ATS48

Environment:
All

Cause:
Missing the +24vdc power supply

Resolution:

Check the 120VAC or 230VAC control voltage on CL1 and CL2
Check the +24vdc to com terminals make sure you meter is DC voltage range.
Check J6 ribbon cable on the power board inside the soft starter. There are 2 sets of twisted pairs of wires. One set will have +24vdc, and one set will have +10vdc. If these voltages are not present, then you may have an issue with the power board. If you have these voltages, then it might be a problem with the MCB Main control board.