Mitsubishi Electric MELSEC-Q Series User Manual page 44

3 SPECIFICATIONS
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(c) Auto tuning operation
The following figure shows the auto tuning operation.
1) Auto tuning output is provided.
2) Data collection starts when the measured value meets the set value
after the first overshoot and undershoot.
3) After data collection, auto tuning ends when PID constants and loop
disconnection detection judgment time are set.
(d) Precautions for auto tuning
The following indicate the conditions under which auto tuning will result in
abnormal termination.
1) Any of the following setting items for the channel has been changed
during auto tuning.
Buffer memory area name
Input range
Set value (SV) setting
Upper output limiter
Lower output limiter
Output variation limiter
Sensor compensation value setting
AT differential gap
AT additional lag
Primary delay digital filter setting
AT bias
Forward/reverse action setting
Buffer memory
address
(decimal)
CH1 CH2
32 64
34 66
42 74
43 75
44 76
45 77
46 78
47 79
48 80
53 85
54 86
MELSEC-Q
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