I use S120(1FK7 synchronous motor) with SMC30 feedback(TTL Encoder) for position control.I use SIEMENS telegram 111 to set run,stop,position and velocity.....Now the position control is no problem.But when I want to change acc and dec time from parameter,the velocity of acc and dec time always the same. Especially,when the position approach to target,it need long time to target position.I use basic ramp-function generator.I set P1082 is motor max speed(2000 rpm).So…anybody can tell me how can I control the acc and dec time normally?

dear sample0527


you have toincrease the value ofparameters p2572 and 2573.
As default this value is 100LU ,since you have to adjust as per your requirement.