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dip04051978

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  1. Thanks for rpely Jreaf. We know it is not recommanded to connect capacitor on the output side of the Drive / Softstarter. But can you please explain in detail how it will fail.
  2. WHAT WILL HAPPEN IF VFD IS CONNECTED ON MOTOR WHERE ALREADY PF CORRECTION CAPACITOR CONNECTED. What will be the effect on Soft starter with the same case ??
  3. Yes. I am referring Motor name plate data only. Motor name plate is showing 920 rpm & i tunned drive with 960 rpm. Is that possible that drive will stall due to this wrong data entered in the drive. What exactly affected due to this ??
  4. How Wrong Motor RPM Value affect on the open loop vector drive performance. What will happen if i enter 960 rpm instead of 920 rpm for open loop vector drive.
  5. Pl.share the value of each above parameter & at what ref. i.e value of current input 4-20mA. Pl.share the value of each above parameter & at what ref. i.e value of current input 4-20mA.
  6. Reference frequency is which you are giving command to drive. Output frequency is the drive output frequency to the motor. Measure frequency is the measured by Encoder if it is there. Reference frequency is which you are giving command to drive. Output frequency is the drive output frequency to the motor. Measure frequency is the measured by Encoder if it is there. And all this parameter, you will able to see under Monitoring menu. You can not change the value of the above parameter in monitoring mode.
  7. What is to be taken care for AC Drive for installation in magnetic field activated area ?? How magnetic field will affect on working of AC Drive ??
  8. But with STOP Type : Freewheel stop, Dec. time will not come in picture as drive there will be no output from the VFD immediately after stop command. Set motor control to V/F, Energy saving etc & try. But with STOP Type : Freewheel stop, Dec. time will not come in picture as drive there will be no output from the VFD immediately after stop command. Set motor control to V/F, Energy saving & try.
  9. How to select switchgear components for application falls under class 30 ??
  10. How to select switchgear components for application falls under class 30 ??
  11. We were there for commissioning 110KW, 75KW, 55KW, 30KW, 30KW & 15KW With Individual Braking resistor on Cranes. All the drives are connected on common DC Bus. Now the problem faced is: During Main Hoist running DBR of Cross Travel got heated / some times long travel DBR heated.
  12. How we can sense & control the slipping of Load on Hoist if VFD & Encoder is provided?? If there is no run command & Till load is slipping how to control the load ?
  13. HOW I CAN CALCULATE INERTIA REFFERED TO HOIST MOTOR?? HOW INERTIA CAN EFFECT ON MOTOR STARTING? THANX IN ADVANCE.
  14. What will be the parameter affect on selection of Inverver for Crane Hoist Mechanism??
  15. I WANT TO INSERT STARTING RESISTOR IN CAGE MOTOR'S PRIMARY SIDE. HOW I CALCULATE RESISTANCE WATTAGE & OHM VALUE FOR CAGE MOTOR?? MY MOTOR IS 1.1KW / 4.25A / 900 RPM / 415V / 50HZ. THANX IN ADVANCE.
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