Posted By: mar
Mce scr drive - 03/11/19 09:11 PM
Getting intermittent insufficient DC loop current feedback faults any ideas already adjusted tp3 test point to ground for 0 millivolts changed scr pri
board
Check the brushes, rigging, & connections
Posted By: mar
Re: Mce scr drive - 03/23/19 02:22 AM
Changed scr pri board right above drive and p4 relay my problem has home away
Posted By: mar
Re: Mce scr drive - 03/25/19 06:52 PM
Correction that was the pt4 relay right next to my scr pri board causing all my intermittent problems
Posted By: Turbo6
Re: Mce scr drive - 03/31/19 01:41 PM
Motor field voltage will also cause this. Try bumping voltage up slightly, also a current sensor going bad will cause this.