Delta Electronics VFD-G manual Over-current Stall Prevention during Acceleration

Chapter 4 Parameters

When the over-current stall prevention is activated, the acceleration time of the AC drive will be longer than the time set in Pr. 01-09.

Over-current Stall
Prevention during		Current
acceleration
06-01
		Output
		frequency
	Over-current stall
	prevention during
	acceleration,
	frequency held

Time

Over-current Stall Prevention during Acceleration

06 - 02	Over-current Stall Prevention during operation		Unit: 1
	Settings	20~250%	Factory Setting: 150%

This parameter selects the percentage of allowable over-current during operation before the stall prevention function is enabled.

If the output current exceeds the value specified in Pr.06-02 when the drive is operating at steady state speed, the drive will decrease its output frequency to prevent the drive from faulting with an OC. Once the current falls below the value specified in Pr.06-02, the drive will then accelerate to catch up with the command frequency.

Over-current Stall Prevention during operation 06-02

Current

Over-current Stall Prevention during operation, output frequency decrease

Output frequency

Time

Over-current Stall Prevention during Operation

Revision July 2008, EG03, SW V1.06 4-53