Pid Gain Tuning Operation Setting (Pr.1218); Parameter Setting For Each Pid Gain Tuning Method - Mitsubishi Electric FR-F800 Instruction Manual

(A) Application parameters
NOTE
• Confirm that the measured values are stable when performing PID gain tuning with the step response method. When the
measured values are unstable, the tuning result may not be accurate.
• Accurate measurement of the maximum slope may not be achieved if the Pr.1213 setting is small in the step response
method.
PID gain tuning operation setting (Pr.1218)
• Set the PID gain tuning operation in this parameter. The digit in the hundreds place represents the target PID loop. The digit
in the tens place represents the tuning method. The digit in the ones place represents the control adjustment method.
Pr.1218 setting
value
0 (initial value) PID gain tuning function disabled
100
101
102
111 First PID
112
121
122
200
201
202
211 Second PID
212
221
222
Parameter setting for each PID gain tuning method
• Set the following parameters according to the selected tuning method (step response method / limit cycle method).
Tuning method
Step
Pr.
response
method
128
 
(753)
1218  
1211  
1212 -

1213  -
1214 -

1215 - 
1216 - 
1217 - 
: Parameter to set
396
PARAMETERS
Target PID
Limit
Item
cycle
method
PID action selection
PID gain tuning setting
PID gain tuning timeout time
Step manipulated amount
Step responding sampling cycle
Timeout time after the
maximum slope
Limit cycle output upper limit
Limit cycle output lower limit
Limit cycle hysteresis
Tuning method
Step response method
Limit cycle method (set-point control)
Limit cycle method (follow-up control)
Step response method
Limit cycle method (set-point control)
Limit cycle method (follow-up control)
Select the PID action.
Select the PID gain tuning operation.
Set the timeout time for PID gain tuning.
A timeout error occurs when the elapsed time exceeds the
setting.
Set the step manipulated amount for PID gain tuning.
Set the cycle for sampling of measurement values for PID
gain tuning.
Set the timeout time after the maximum slope measurement
for PID gain tuning.
The measurement for tuning is completed when the elapsed
time exceeds the setting.
Set the upper limit value of the two-position output for PID
gain tuning.
Set the lower limit value of the two-position output for PID
gain tuning. (When the setting exceeds the Pr.1215 setting, a
tuning error occurs.)
Set the hysteresis of the set point for PID gain tuning.
Control adjustment method
P control adjustment
PI control adjustment
PID control adjustment
PI control adjustment
PID control adjustment
PI control adjustment
PID control adjustment
P control adjustment
PI control adjustment
PID control adjustment
PI control adjustment
PID control adjustment
PI control adjustment
PID control adjustment
Description