Delta Electronics AC Motor Drive VFD-G - Manual (Page 113)

Chapter 4 Parameters|
4-62 Revision July 2008, EG03, SW V1.06
Group 8: Special Parameters
08 - 00 DC Braking Current Level Unit: 1
Settings 00~100% Factory Setting: 00
This parameter determines the level of DC braking current output.
08 - 01 DC Braking Time during Start-up Unit: 0.1
Settings 0.0~60.0 Sec Factory Setting: 0.0
This parameter determines the duration of time that the DC braking current will be applied to
the motor during the AC drive start-up.
The motor may rotate by external force or inertia itself before operating. It may damage the
motor or start the AC drive protection function by an over current if the AC drive added at this
time. This parameter enable the AC drive to output a direct current before running the motor
that will produce a torque to forced motor stop and get a steady start-up characteristic.
08 - 02 DC Braking Time during Stopping Unit: 0.01
Settings 0.00~60.00 Hz Factory Setting: 0.0
This parameter determines the duration of time that the DC braking current will be applied to
the motor during stopping.
Motor may be in rotation status after AC drive stops output and can’t in stop status accuracy
when motor is running with external force or itself inertia. After AC drive stops output, this
parameter could output a DC current to produce torque force motor to stop and make sure the
motor has stopped accuracy.
08 - 03 Start-point for DC Braking Unit: 0.01
Settings 0.00~160.00 Hz Factory Setting: 0.00
This parameter determines the frequency when DC braking will begin during deceleration.
If this parameter is set greater than 01-05 minimum frequency setting, it won’t decelerate to
01-05 and enter DC braking status when AC drive brakes. Suitable DC braking start-up
frequency setting will get better braking characteristic.