# IRC5 becomes active by itself

**URL:** <https://tech-community.robotics.abb.com/t/irc5-becomes-active-by-itself/4117>\
**Category:** Robot Controller\
**Created:** [April 13, 2011, 6:57am UTC](https://tech-community.robotics.abb.com/t/irc5-becomes-active-by-itself/4117 "2011-04-13T06:57:25Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![dhyan](https://dub1.discourse-cdn.com/flex005/user_avatar/tech-community.robotics.abb.com/dhyan/32/2452_2.png) [@dhyan](https://tech-community.robotics.abb.com/u/dhyan)\
**Post date:** [April 13, 2011, 6:57am UTC](https://tech-community.robotics.abb.com/t/irc5-becomes-active-by-itself/4117/1 "2011-04-13T06:57:25Z")

</div>

Dear All

Today I installed IRB 2400 and everything was normal. But everytime I shutdown the controller, about 20 minutes later, the IRC5 becomes active (turn on) automatically, shown by booting system for few seconds and then becomes turn off by itself. Whereas ON-OFF switch is in OFF position and I have disconnected 3 phase power from the source.  
Can anyone explain this strange thing? I predict that there is something wrong with Capacitor (energy) bank.

BR  
Dhyan Wicaksono  
ABB Robot Programmer