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Arrow 750 - regen resistor glowing red hot.

Burf86

Plastic
Joined
May 10, 2021
I was sitting in front of my Arrow 750 the other day, deburring a part, when the external regen resistor burst into flames. I quickly hit the emergency stop and the flames died down and the resistor cooled off.
The next day I was able to make the spindle do its thing. i.e. spin and stop as it should, but when the machine was sat idle the regen resistor would then start to overheat again.
Please help me Cincinnati brain trust!
 

Garwood

Diamond
Joined
Oct 10, 2009
Location
Oregon
One or more regen IGBT has likely failed. If your drive is user serviceable there should be a procedure for checking and replacing the IGBT's. If it is not then you throw the drive away and buy a used/new one.
 








 
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