Pid Gain Tuning - Mitsubishi Electric FR-F820-00077 Instruction Manual

Parameters
Parameters referred to
Pr. 59
Pr. 73
Pr. 79
Pr. 178 to Pr. 189
Pr. 190 to Pr. 196
Pr. 290
C2 (Pr. 902) to
C7 (Pr. 905)
5.11.6

PID gain tuning

Changing the PID control manipulated amount and measuring the PID control response enable au-
tomatic setting of the constant optimal for PID control.
For tuning, use the step response method or the limit cycle method.
Pr.
1211
A690
1212
A691
1213
A692
1214
A693
1215
A694
1216
A695
1217
A696
1218
A697
1219
A698
FR-F800
Remote function selection
Analog input selection
Operation mode selection
(input terminal function selection)
(output terminal function selection)
Monitor negative output selection
Frequency setting voltage (current) bias/gain
Name
PID gain tuning timeout
time
Step manipulated amount
Step response sampling
cycle
Timeout time after the
maximum slope
Limit cycle output upper
limit
Limit cycle output lower
limit
Limit cycle hysteresis
PID gain tuning setting
PID gain tuning start/
status
Initial
Setting range Description
value
Set the time after the PID gain tuning starts until a
100 s 1 to 9999 s
timeout error occurs.
Set the step manipulated amount when using the
1000% 900 to 1100% step response method to perform the PID gain
tuning.
Set the cycle for sampling of measurement values
1 s 0.01 to 600 s when using the step response method to perform
the PID gain tuning.
Set the time after the measurement of the maximum
slope until the completion of the tuning when using
10 s 1 to 9999 s
the step response method to perform the PID gain
tuning.
Set the upper limit value of the two-position output
1100% 900 to 1100% when using the limit cycle method to perform the
PID gain tuning.
Set the lower limit value of the two-position output
1000% 900 to 1100% when using the limit cycle method to perform the
PID gain tuning.
Set the hysteresis of the set point when using the
1% 0.1 to 10%
limit cycle method to perform the PID gain tuning.
0, 100 to 102,
111, 112, 121,
Select the target loop, method, and control
0 122, 200 to
adjustment method for the PID gain tuning.
202, 211, 212,
221, 222
0 PID gain tuning function disabled
1 PID gain tuning start
0 2 During PID gain tuning (read only)
8 PID gain tuning forced end
9, 90 to 96 Tuning error (read only)
(A) Application parameters
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