Brake resistor with ACS880
Hello I have a problem with parameters of the VFD ACS880 and using Brake resistor.
I connected the brake resistor 18K Ohms and the motor 22KW 3 phase
i entered paramters
99.05 = 380
99.06 = 44 A
99.07 = 50
99.08 = 800
99.09 = 22
99.10 = ID MAGN
27.01 = ON
27.02 = warning
27.03 = 18
27.05 = 8 KW
27.06 = AS Generator
But i the VFD does not stopping motor fastlly after DECEL . The 190 sec. elapsed but the motor still in free running, but i see the brake resistor a little warm. I want when the 190 secs elapsed , the motor stops one time and the brake resistor stops the motor.
Some missing parameters i did not use ?
According to your parameter, it is not clear that why you give accel and decel time so long? whether you use brake chopper for faster brake operation within a very short period of time. Also i think you disable the over voltage control parameter and done ramp to stop. Mention your brake chopper thermal time constant which you gave.
What kind of FW are you using?
In the normal ACS880 menu, the chopper/resistor is managed in parameter group 43.
However, you must disable overvoltage control limits, usually parameter 30.30.
read the attach screen shoot of the FW manual
Hope this help you