Mitsubishi Electric MELSEC Q Series User Manual page 47

3 SPECIFICATIONS
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(3) Operation at termination of auto tuning
(a) Operation at normal termination
• Auto tuning status (Xn4 to Xn7) turns off.
• The PID constants are set.
• Loop disconnection detection judgment time (buffer memory address: 3B
5B , 7B
H H
at the start of auto tuning, it remains unchanged from 0.)
(b) Operation at abnormal termination
• Auto tuning status (Xn4 to Xn7) turns off.
• The PID constants are not set.
(4) Adjustment after auto tuning
(a) Specific readjustment is not needed for the PID constants calculated by auto
tuning.
(b) Use Control response parameter (buffer memory address: 31
91 ) to change the control response for the PID constants calculated by auto
H
tuning.
REMARK
1) The time between the start and completion of auto tuning depends on the object
to be controlled.
2) You can confirm that auto tuning has been completed by checking that Auto
tuning status (Xn4 to Xn7) has turned from on to off.
3) At the start of an auto tuning, if Automatic backup setting after auto tuning of PID
constants (buffer memory address: 3F
PID constants and loop disconnection detection judgment time are automatically
backed up by E
search engine
, 9B ) is set. (If the loop disconnection detection judgment time is 0
H
, 5F
H
2
PROM on completion of auto tuning.
MELSEC-Q
, 51
H
, 7F , 9F ) is preset to be valid, the
H H H
,
H
, 71 ,
H H
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