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alarm F7807

7/16/2023 3:40 PM	Rate (0)
rajeshdm_devasa16... Joined: 7/16/2023 Last visit: 7/17/2025 Posts: 2 Rating: (0)	Dear Sir we using g120c vfd and motor kw0.37 vfd to motor length 150m we using output chock but vfd get alarm F7807 but motor not burnt winding good motor current setting in drive (p0640=0.9 as per motor name plate) unknown user unknown user ------------------------------------------------------------------------------------------ Split from Cable length between G120 PM240 and the Motor more 300м.
	Last edited by: Jen_Moderator at: 07/17/2023 10:28:29 New subject after splitting
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7/21/2023 1:58 PM	Rate (0)
Tractor Gold Expert Joined: 3/27/2008 Last visit: 9/17/2025 Posts: 1216 Rating: (148)	Hi The drive / motor combination should operate with an output choke in circuit?? Try the following as a diagnostic... 1/ Extend the ramp times, this may remove current surge during start. 2/ Select P1800, pulse frequency to the lowest value available, this will reduce cable capacitive losses. 3/ Disconnect the motor at the motor terminal housing, leaving the cable and choke in circuit, see of the fault goes away. 4/ It is still possible that the motor is defective, motor insulation breakdown is difficult to test for when using an inverter drive. Tractor
	Tractor
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