Claven2
Cast Iron
- Joined
- Apr 28, 2008
- Location
- Ottawa, Canada
I'm running a Reliance Electric 3/4HP 1725rpm motor, 3ph, 230v, 3.44A. Supply is 1ph230v through an IMO iDrive VFD.
Problem is, if I run the motor at 20hz or less for any amount of time (3+ minutes or so), it gets hot and the VFD's thermal overload trips.
Also, if I run up in the 50-60Hz range, the motor still gets really warm, but isn't tripping.
It's a continuous duty SF1.0 motor in an unvented casing with external fan, operating temp 40 degrees on the tag.
Should this motor be running toasty or is something amiss?
I'm running the VFD in sensorless vector mode with the motor parameters inputted into the drive. 5sec start and brake. Max freq. set to 60Hz and min set to 15Hz.
Any help would be appreciated.
Problem is, if I run the motor at 20hz or less for any amount of time (3+ minutes or so), it gets hot and the VFD's thermal overload trips.
Also, if I run up in the 50-60Hz range, the motor still gets really warm, but isn't tripping.
It's a continuous duty SF1.0 motor in an unvented casing with external fan, operating temp 40 degrees on the tag.
Should this motor be running toasty or is something amiss?
I'm running the VFD in sensorless vector mode with the motor parameters inputted into the drive. 5sec start and brake. Max freq. set to 60Hz and min set to 15Hz.
Any help would be appreciated.