I am working at a company doing an install and they want to use a 25hp Powerflex 70 on a 2 hp agitator. I was wondering 1 if this is even feasible and 2 how low can I even take this down?
I am working at a company doing an install and they want to use a 25hp Powerflex 70 on a 2 hp agitator. I was wondering 1 if this is even feasible and 2 how low can I even take this down?
We use 5 HP minimum because some of the VFD vendors have very small terminals on smaller VFDs. We have used 5 HP VFDs on 0.5 HP motors. The parameters for motor protection likely don't have great resolution that low - but the motor is a throw-away when it fails.
Besides being a bit of a waste ... I don't believe it is dangerous.
If you are running in vector mode instead of V/Hz ... the 25 HP VFD may not accept the measured values for the smaller motor as valid. I don't have that type of in-depth knowledge on the PF 70.