want to replace brushless ac servo system with ac inverter system can anybody suggest requirements and procedure.

Requierments are a statement of needs. As such you and your company are best to state what your needs are. Knowing what your needs are we could then suggest something. Having dealt with Servo Systems and AC Inverters I am at present hard pressed to make sense of what you are asking. If you need to discuss the details in more privacy I will provide contact details.

do you mean replace brushless ac servo system with ac induction motor driven by inverter?

yes i want to replace brushless ac servo system with ac induction motor driven by inverter

thanks for the guidence Mr. Paul i want to replace ac brushless servo motor and servo drive being in use on a textile machine as warp electronic let off system the servo system is of baldor electricals i want to install a ac induction motor and inverter drive to replace the said system.

Normally, replacing a servo drive with an drive usinge AC Induction motor and Inverter is not to be reccommended. However, in your situation it may work out. Although, if you already have a Baldor Servo drive on the task I would be interested to hear why you think it is not doing an adequate job. I shall respond privately with the rest.

these servo drives and motors are more than 15 years old and gives frequent trobles and i am facing problems in getting the same repair so i need a simpler and cheaper solution regarding tension of yarn system is available in the panel of machine

One of the question you need to think is that in your system, are there any requirements for the servo motor to be in non-rotation condition but some torque force should be maintained? Or enough precision position control is required? AC induction motor has less performances than servo motor regarding to the position control.

yes even in non-rotation condition torque force need to maintained

Another thing you might have to consider is size and mounting. To provide same torque induction motor has to be bigger in size than servo. Torque at 0 speed can be managed even in induction motor by drives with vector control, DTC can give you rated torque at 0 speed, but you might have to consider the motor cooling if standstill torque requirement or low speed operation is longer.

Since this is retrofit work, please look in to mechanical aspects of the retrofit more critically.as size and adaptation become important apart from meeting with application characteristics. How ever if you can send me the details of exact application, I may be able to help and can depute application engineers to your works if needed. You may also contact ABB who can support you for Baldor servo motor with ACSM1 drives with rewinder algorithms specially suitable for Servo motors