Hello,
I have a motor that we are sending a RPM Speed Output from 0-100% to the VFD. However, the Motor HP needs to be limited to 6000 HP and the max rating of the motor is 8000. I have a Torque analog reading from the VFD Coming into my PLC used to calculate HP. How do I limit the HP with only a RPM Speed Output? Do I read the actual HP and if it is over the max, increase Speed Setpoint? This is tricky because that seems elementary doing it this way. Do I use PID to increase and decrease the Speed Setpoint based off of the HP over Limit?
I have a motor that we are sending a RPM Speed Output from 0-100% to the VFD. However, the Motor HP needs to be limited to 6000 HP and the max rating of the motor is 8000. I have a Torque analog reading from the VFD Coming into my PLC used to calculate HP. How do I limit the HP with only a RPM Speed Output? Do I read the actual HP and if it is over the max, increase Speed Setpoint? This is tricky because that seems elementary doing it this way. Do I use PID to increase and decrease the Speed Setpoint based off of the HP over Limit?