Parameter Description
Parameter Description
118
Please pay attention to the Gain setting during the process of PID Gain setting for it is possible that
the output current can not be limited absolutely.
● Under PID control, the output frequency is also limited between the maximum frequency and the
minimum frequency.
● Please refer to the instruction of P.60 about the input signal filter on terminal 4-5 and terminal 2-5.
● The sketch map of PID function is as follows:
s
T
: Sampling period
＝
10ms
Parameter
Factory
Setting
Setting
Range
Remarks
170
0
0, 1, 2
0
PID function non-selected
1
The target value is determined by P.225. The feedback
value is determined by the voltage of terminal 2-5.
2
The target value is determined by P.225. The feedback
value is determined by the voltage of terminal 4-5.
171
0
0,1
0
Negative feedback control. The calculation for the
deviation is target value minors the feedback value.
When an increase in the output frequency will increase
the feedback value, select this setup.
1
Positive and feedback control
.
The calculation for the
deviation is feedback value minors the target value.
When an increase in the output frequency will decrease
the feedback value, select this setup.
172
20
1~100
This gain determines the proportion controller’s impact on
feedback deviation. The greater the gain, the faster the
impact. Yet a gain that is too big will cause vibration.
173
1s
0~100s
This parameter is use to set integral controller’s integral
time. When the integral gain is too big, the integral effect
will be too weak to eliminate steady deviation. When the
integral gain is too small, the system vibration frequency
will increase, and therefore the system may be unstable.
174
0ms
0~1000ms
This gain determines deviation controller’s impact on the
amount of change of the deviation. Appropriate deviation
time can reduce the overshooting between the proportion
controller and the integral controller. Yet when the deviation
time is too large, system vibration may be induced.
175
0
0~100%
---
176
30s
0~600s
---
177
0
0, 1,2
0
Free stop
1
Decelerate and stop
2
Continue to run when the alarm goes off
