jmoore@jhm
Guest
J
Is it possible that VFDs can cause noise to a degree of intermitent fuse blowing on Servo drives fed from the same immediate power source?
We have 4 VFDs each powering a 1 1/2 hp motor, then connected to the same power source in the same nema inclosure are three AB Ultra3000 Servo drives which each power a small 1 1/2 hp servo motor.
None of the drives, VFD or Servo are overloaded, yet we have expereinced intermitent fuse blowing on the input power to the Servo drives. The drive have the exact 5amp fuse as recommended by AB and the system operates at 480 vac 3ph.
If the VFDs are suspect, what is the solution. This problem seems to be isolated to this system, since no other surounding equipment is experiencing problems.
We have 4 VFDs each powering a 1 1/2 hp motor, then connected to the same power source in the same nema inclosure are three AB Ultra3000 Servo drives which each power a small 1 1/2 hp servo motor.
None of the drives, VFD or Servo are overloaded, yet we have expereinced intermitent fuse blowing on the input power to the Servo drives. The drive have the exact 5amp fuse as recommended by AB and the system operates at 480 vac 3ph.
If the VFDs are suspect, what is the solution. This problem seems to be isolated to this system, since no other surounding equipment is experiencing problems.