So my main questions is: During a "hard" VFD overload (as stated below; not from a programmed overload detection trigger) is it common that they fault-out in a way that the motor keeps running ? It is as if the VFD fails and lets current pass, but it must still be converting to 3 phase from single...so it's not just that the IGBT's are "ON"/passing current. There is still a conversion to 3 phase.
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Back ground info, see top for the main question;
VFD Model: LSLV0022C100-1N
Inverter works well been using it via Modbus control for over a year.
I was testing how much torque a motor can provide with this VFD and noticed something.
Single phase 220vac @60Hz in, 3 phase out
I'm testing this VFD, manual VFD panel control no modbus , I create a situation where I exceed the VFD's (current) rating.
I set a jog frequency of 10 Hz, I hold the motors shaft still,I turn on the jog switch, the amps climb and then the VFD is overloaded (as expected).
Now during this, the VFD is overloaded and inoperable .(until reset)..although the freq and other readouts seem to work in real time (60 Hz). No panel buttons work except the reset button I have wired in. The VFD is in some kind of "Limbo" state as expected, the unexpected part is that the motor runs instead of power being cut to it...
During this I release the shaft. The motor is un-stalled and starts to runs at 60 Hz indicated on the VFD DRO(not the 10 Hz target speed ) the stop button will not stop the motor, but the RESET button WILL stop the motor...it does reset the VFD and let in function normally again and so stop the motor.
NOTE: Normally I do have appropriately set overload protection settings programmed in to prevent an overload that will disrupt the VFD's operation..this was just something I noted during a test.
**************************
Back ground info, see top for the main question;
VFD Model: LSLV0022C100-1N
Inverter works well been using it via Modbus control for over a year.
I was testing how much torque a motor can provide with this VFD and noticed something.
Single phase 220vac @60Hz in, 3 phase out
I'm testing this VFD, manual VFD panel control no modbus , I create a situation where I exceed the VFD's (current) rating.
I set a jog frequency of 10 Hz, I hold the motors shaft still,I turn on the jog switch, the amps climb and then the VFD is overloaded (as expected).
Now during this, the VFD is overloaded and inoperable .(until reset)..although the freq and other readouts seem to work in real time (60 Hz). No panel buttons work except the reset button I have wired in. The VFD is in some kind of "Limbo" state as expected, the unexpected part is that the motor runs instead of power being cut to it...
During this I release the shaft. The motor is un-stalled and starts to runs at 60 Hz indicated on the VFD DRO(not the 10 Hz target speed ) the stop button will not stop the motor, but the RESET button WILL stop the motor...it does reset the VFD and let in function normally again and so stop the motor.
NOTE: Normally I do have appropriately set overload protection settings programmed in to prevent an overload that will disrupt the VFD's operation..this was just something I noted during a test.