Delta Electronics AC Motor Drive VFD-G - Manual (Page 139)

Chapter 4 Parameters|
4-88 Revision July 2008, EG03, SW V1.06
10 - 07 Primary Low Pass Filter Time Unit: 0.1
Settings 0.0~2.5 Sec Factory Setting: 0.0
This parameter determines primary Low Pass filter time.
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 Unit: 0.01
Settings 0.01~160.00Hz Factory Setting: 600.00
This parameter setting could allow the maximum of PID deviation.
If PID function is normally, 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 10-07 setting
time, it means PID feedback control is abnormal. The treatment is set as 10-10.
10 - 09 PID Feedback Signal Fault Treatment Time Unit: 0.1
Settings 0.0~3600.0 Sec Factory Setting: 0.0
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.
10 - 10 PID Feedback Signal Fault Treatment
Factory Setting: 01
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 V/F Curve Selection
Factory Setting: 00
Settings 00: Determined by group 1
01: 1.5 power curve
02: 1.7 power curve
03: 2 power curve
04: 3 power curve