Delta Electronics VFD-F Series manual 5-62

Factory Setting: 01

VFD-F Series

Output frequency of PID controller will filter by primary low pass function. This function could decrease change of output frequency. A long primary low pass time means filter degree is high and vice versa.

Unsuitable primary low pass filter time setting may cause system oscillation.

10 - 08	PID Feedback Signal Range		Factory Setting: 600.0
	Settings	0.0~6550.0	Unit:0.1
This parameter setting could allow the maximum of PID deviation.

If PID function is normal, it should control the detective value to target value accurately in the certain time. If AC drive can’t control deviation in the 10-08 setting range during 10-09 setting time, FbL warning will pup-up and it means PID feedback control is abnormal. The treatment is set as 10-10.

10 - 09	PID Feedback Signal Fault Treatment Time		Factory Setting:	0.0
	Settings	0.0~3600.0 Sec	Unit: 0.1
This parameter is to set the detection time of abnormal PID derivative. If PID deviation
detection time is set to 0.0, the function is disabled.
			Factory Setting:	01
10 - 10	PID Feedback Signal Fault Treatment
	Settings	00: Warn and RAMP stop
		01: Warn and COAST stop
		02: Warn and keep operating

This parameter is to set treatment of the abnormal PID deviation.

10 - 11 PID Minimum Output Frequency

Settings 0: By PID controller 1: By AC drive

This parameter can decide the source of PID output minimum frequency when AC drive enters PID sleep process. If it is set to 0, minimum output frequency should be set by PID. If it is set to 1 and 01-08 is 0, the output frequency is equal to the value of 01-05 setting. If it is set to 1 and 01-08 is not 0, the output frequency is equal to the value of 01-08 setting.

5-62 DELTA ELECTRONICS, INC. ALL RIGHTS RESERVED