Azbil C1M - AT (Automatic Tuning) Stop;Start; AT Error

5-12
Chapter 5. Functions
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AT (automatic tuning) stop/start
AT can be started or stopped.
Item (bank) Display Description Initial value User level
AT (Auto-Tuning) stop/start
(mode bank)
AT
At.OF(0): AT stop
At.On(1): AT start
At.OF
Simple,
standard,
advanced
• AT stops in MANUAL or READY mode.
• If a PV high limit error (AL01) or PV low limit error (AL02) occurs, AT stops.
• If the operation type of any of internal contacts 1 to 5 is set to AT stop/start, At
(AT stop/start) is displayed but the setting cannot be changed with the keys.
• If CtrL (control method) is set to 0 (ON/OFF control), At (AT stop/start) is
not displayed and the setting cannot be changed with the keys. If CtrL (control
method) is changed to 0 (ON/OFF control) while AT is running, AT stops.
• If “Bit 3: AT stop/start display” of C73 (mode display setup) is set to 0 (disabled),
At (AT stop/start) is not displayed and the setting cannot be changed with the
keys.
AT (automatic tuning) (p.5-24), 5 - 4 AT (Automatic Tuning) Function
(p.5-28) (for details on AT)
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AT error
AT status can be monitored, and if it ends abnormally, the error can be cleared by
this setting.
Item (bank) Display Description Initial value User level
Auto tuning error
(mode bank)
At.Er
Er.OF(0): Normal
Er.On(1): Abnormal
Er.OF
Simple,
standard,
advanced
• After executing the AT start operation, if AT does not start, or if it stops without
changing the PID constants, At.Er (auto tuning error) will be set to Er.on
(abnormal).
• The error can be reset to Er.OF (normal) by any of the following operations.
• Change the setting of At.Er (auto tuning error) to Er.OF (normal).
• Try executing AT again until it ends normally.
• Turn the power off and then back on.
•
AT (automatic tuning) (p.5-24), 5 - 4 AT (Automatic Tuning) Function
(p.5-28) (for details on AT)