# Controller will not power up

**URL:** <https://tech-community.robotics.abb.com/t/controller-will-not-power-up/11370>\
**Category:** PowerPacs\
**Created:** [March 7, 2024, 9:13am UTC](https://tech-community.robotics.abb.com/t/controller-will-not-power-up/11370 "2024-03-07T09:13:36Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![mikkaelj1961](https://avatars.discourse-cdn.com/v4/letter/m/65b543/32.png) [@mikkaelj1961](https://tech-community.robotics.abb.com/u/mikkaelj1961)\
**Post date:** [March 7, 2024, 9:13am UTC](https://tech-community.robotics.abb.com/t/controller-will-not-power-up/11370/1 "2024-03-07T09:13:36Z")

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Have VFD that has had no power to it for 5 years.  
tried powering on and not working

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**Author:** ![graemepaulin](https://avatars.discourse-cdn.com/v4/letter/g/258eb7/32.png) [@graemepaulin](https://tech-community.robotics.abb.com/u/graemepaulin)\
**Post date:** [May 16, 2024, 11:14pm UTC](https://tech-community.robotics.abb.com/t/controller-will-not-power-up/11370/2 "2024-05-16T23:14:19Z")

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VFD = Variable Frequency Drive?  
So presumably you are talking about the main drive unit, what is the controller model?