Hi guys,
We have an Allen Bradley Powerflex 753 drive powering a simple blower (37kW) motor which we have just powered up. At 50Hz the blower is meant to pull 27kW and 40A at our outlet pressure but it is pulling about 45kW and 80A.
We've tried every different setting we can in the VSD and have mechanically tested the blower. We've tested the RPMs on the motor at 50Hz and they are correct at 2950RPM. We've narrowed the large and abnormal current draw down to either the VSD or the motor.
Motor is meant to be programmed as a constant torque motor and we have the VSD set on Induction SV mode.
Has anyone come across this issue before with the AB 753 and are we missing something?
We have an Allen Bradley Powerflex 753 drive powering a simple blower (37kW) motor which we have just powered up. At 50Hz the blower is meant to pull 27kW and 40A at our outlet pressure but it is pulling about 45kW and 80A.
We've tried every different setting we can in the VSD and have mechanically tested the blower. We've tested the RPMs on the motor at 50Hz and they are correct at 2950RPM. We've narrowed the large and abnormal current draw down to either the VSD or the motor.
Motor is meant to be programmed as a constant torque motor and we have the VSD set on Induction SV mode.
Has anyone come across this issue before with the AB 753 and are we missing something?