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r26 errors: F30021 ground fault, F30005 power unit overload , F7802

12/12/2024 4:48 AM	Rate (0)
AutoGen_3889492 Joined: 6/3/2024 Last visit: 4/16/2025 Posts: 1 Rating: (0)	Has anybody solved this issue. i am also facing this same kind of issue. Earlier, There was no DC link showing and in r26 dc link voltage showing 32.7V and P210 Drive unit line supply voltage is 600V. I change the drive and now the new drive give alarm F30021 ground fault, F30005 power unit overload , F7802 .....,, i checked the motor there is no ground fault , motor resistance is ok ....Please suggest what to do.. ------------------------------------------------------------------------------------------ Split from Power unit overload I2t (r36) problem.
	Last edited by: Moderator_Lan at: 12/12/2024 07:46:05 New subject after splitting
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12/12/2024 2:59 PM	Rate (0)
Tractor Gold Expert Joined: 3/27/2008 Last visit: 9/3/2025 Posts: 1212 Rating: (148)	Disconnect the motor at the inverter drive, and set the drive to run, the fault should indicate 'no motor connected'. If, this is ok, the reconnect and disconnect at the motor terminal and try again. Cable faults are difficult to detect with conventional test equipment. Tractor
	Tractor
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