Delta Electronics VFD-G manual Group 8 Special Parameters

Chapter 4 Parameters
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.

4-62 Revision July 2008, EG03, SW V1.06