6-16
6-3-6 PID Control Settings
n128
PID Control Selection Register 0180 Hex Changes during
operation
No
Setting
range
0 to 8 Unit of
setting
1 Default setting 0
Set Values
Value
Description
PID control Derivative control
method
Addition of
frequency reference
Positive or negative
characteristics
0 Disabled --- --- ---
1 Enabled Deviation integrated No Positive
2 Enabled Feedback value integrated No Positive
3 Enabled Deviation integrated Yes Positive
4 Enabled Feedback value integrated Yes Positive
5 Enabled Deviation integrated No Negative
6 Enabled Feedback value integrated No Negative
7 Enabled Deviation integrated Yes Negative
8 Enabled Feedback value integrated Yes Negative
Note 1. Normally select feedback-value integral PID control as the derivative control method.
Note 2. Add the frequency reference if the target of control is motor speed and do not add the fre-
quency reference if the target of control is temperature or pressure.
Note 3. Set positive or negative characteristics according to the characteristics of the detector. If the
feedback value is decreased with the output frequency increased, set negative characteris-
tics.
Note 4.
Set PID control in n128 (PID Control Selection) only after returning n077 to 0. An error will occur and it
will not be possible to change n128 if n077 is set to other than 0 (disable).
n129
Feedback Value Adjustment Gain Register 0181 Hex Changes during
operation
Yes
Setting
range
0.00 to 10.00 Unit of
setting
0.01 Default setting 1.00
Set Values
• Set the multiplication rate of the feedback value.
• This parameter adjusts the feedback value so that the input level of the input device, such as a sensor,
will coincide with the input level of the target value.
For example, if the target value of 1,000 rpm is input as 10 V and the feedback value at 1,000 rpm is
5 V, the feedback value will be doubled.
n130
Proportional (P) Gain Register 0182 Hex Changes during
operation
Yes
Setting
range
0.0 to 25.0 Unit of
setting
0.1 Default setting 1.0
n131
Integral (I) Time Register 0182 Hex Changes during
operation
Yes
Setting
range
0.0 to 360.0 (s) Unit of
setting
0.1 s Default setting 1.0
Advanced Operation Chapter 6