I'm looking at pairing a KBAC-27D VFD fed by 115v with a 2HP, 3450 RPM, 3phase motor. This theoretically exceeds limits, but as a practical matter will it work?
The VFD can drive this 2HP motor when supplied by 230v, but the VFD is limited to 1.5HP when supplied by 115v. (There are jumpers to configure the VFD with all the motor particulars.)
If I configure the VFD for 1.5HP but hang a 2HP motor on it, what will go wrong and how can I avoid serious damage? I expect the VFD to detect a sustained over current limit and fault in a non-destructive way. I want to be sure that it won't cook the VFD or the motor. Is that correct?
For what it's worth, my application is a belt grinder so there is no startup load. I'll be running at reduced speed much of the time, and probably be running with lighter loads when I do operate at full speed. When I'm grinding hard, it tends to be about 50% duty cycle - that is, only for a few seconds at a time with a few seconds between.
As a practical matter, can I "fly under the radar" of the VFD limit circuits and expect this setup to operate decently?
Thanks!
The VFD can drive this 2HP motor when supplied by 230v, but the VFD is limited to 1.5HP when supplied by 115v. (There are jumpers to configure the VFD with all the motor particulars.)
If I configure the VFD for 1.5HP but hang a 2HP motor on it, what will go wrong and how can I avoid serious damage? I expect the VFD to detect a sustained over current limit and fault in a non-destructive way. I want to be sure that it won't cook the VFD or the motor. Is that correct?
For what it's worth, my application is a belt grinder so there is no startup load. I'll be running at reduced speed much of the time, and probably be running with lighter loads when I do operate at full speed. When I'm grinding hard, it tends to be about 50% duty cycle - that is, only for a few seconds at a time with a few seconds between.
As a practical matter, can I "fly under the radar" of the VFD limit circuits and expect this setup to operate decently?
Thanks!