Delta Electronics VFD-F Series manual Group 8 Special Parameters

Factory Setting: 0.00

Factory Setting: 0.0

VFD-F Series

5.9 Group 8: Special Parameters
08 - 00	DC Brake Current Level		Factory Setting:	00
	Settings	00~100%	Unit: 1
This parameter determines the level of DC brake current output.
08 - 01	DC Brake Time during Start-up		Factory Setting:	0.0
	Settings	0.0~60.0 Sec	Unit:	0.1

This parameter determines the duration of time that the DC brake 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 Brake Time during Stopping

Settings 0.00~60.00 SecUnit: 0.01 This parameter determines the duration of time that the DC brake 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 Brake

Settings 0.00~120.00 HzUnit: 0.01 This parameter determines the frequency when DC brake 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 brake status when AC drive brakes. Suitable DC brake start-up frequency setting will get better brake characteristic.

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