Before Deceleration Rate Tuning or KEB Tuning, check these items:

Note:

  • Do not do Deceleration Rate Tuning if you use a braking resistor unit or a regenerative converter.

  • Do Deceleration Rate Tuning and KEB Tuning with the load attached to the motor.

  • Do not do Deceleration Rate Tuning or KEB Tuning for these applications:

    In Deceleration Rate Tuning and KEB Tuning, the drive will automatically rotate the motor forward and accelerate and decelerate the motor again and again.

    • On a machine that does not let the motor rotate forward

    • In applications with a small range of operation (trolleys and other such applications that can only move linearly)

    • In elevator applications

    • Applications where sudden acceleration and sudden deceleration are not applicable.

  • To do KEB Tuning with the external main circuit capacitors connected to the drive, set L3-26 [Additional DC Bus Capacitors] then do KEB Tuning.

  • Do not do KEB Tuning or Deceleration Rate Tuning if the drive is set to use H1-xx = 16 [MFDI Function Select = Motor 2 Selection]. Failure to obey can cause an ov [Overvoltage] fault.