IMO iDrive - Page 60

Chapter 4 Software index
4-27
b67 PID operation mode
000: PID Function disabled.
001: PID Control, deviation is derivative controlled
002: PID Control, feedback is derivative controlled.
003: Same as 001 but (reverse characteristics control).
004: Same as 002 but (reverse characteristics control).
b67 = 001, D is the deviation from (target value – feedback value) in the unit time (b71).
= 002, D is the deviation of feedback value in the unit time (b71).
= 003, D is the deviation of (target value – feedback value) in the unit time (b71).
If the deviation is positive, the output frequency decreases, vice versa.
= 004, D is the deviation of feedback value in unit time (b71).
When the deviation is positive, the output frequency decreases, vice versa.
b68 Feedback gain : 0.00 - 10.0
b68 is feedback gain, ie feedback value = detected value × b68.
b69 P: Proportional gain : 0.00 - 10.0
b69: Proportional gain for P control.
b70 I: Integral time (s) : 00.0 - 100
b70: Integral time for I control
b71 D: Differential time (s) : 0.00 - 10.0
b71: Differential time for D control.
b72 PID offset 000: Positive direction
001: Negative direction
b73 PID offset adjust (%) : 000 ~ 109%
PID operation result can be adjusted by b73 (b72 effects the polarity of b73).