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Cancel auto-tuning
Autotune (AT) is canceled when any of the following conditions occur.
1) When auto-tuning parameter is set to “OFF” during auto-tuning
2) If the input sensor is disconnected and burnout or ADC error occurs
3) In case the power is turned off during auto-tuning
4) When switching to STOP mode
When auto-tuning is completed, the PID(PB, TI, TD), ARW(AR), and LBA parameters are changed to new values.
Also, if auto-tuning is canceled while auto-tuning is in progress,
control operation is performed with the parameter set value before auto-tuning.
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External contact input (D.I) function (option)
1) This device can be operated (RUN) or stopped (STOP) by an external contact input signal.
2) It can be controlled by selecting the memory area number with an external contact input signal.
※ When using external contact input, function mode "DISL" must be selected as No. 1 (using DI).
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Memory zone function
This function saves parameters such as temperature set
value (SV) of channels 1 to 8 in 8 memory zones.
In other words, data of 8 channels is stored in one memory
zone, and temperature control is possible under different
setting conditions only by selecting
the memory zone number as needed.
The parameters that can be saved in the memory area are
set value (SV), control loop break alarm (LBA), alarm 1,
alarm 2, alarm 3, proportional band, integral time,
derivative time, overintegration limit,
SV slope setting, channel use. /Not used.
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Details of the function
Memory Zone
Memory area 1
Memory area 2
Memory area 3
Memory area 4
Memory area 5
Memory area 6
Memory area 7
Memory area 8
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Auto tuning execution
Auto-tuning is executed when all of the following conditions are satisfied.
1) Set all parameters except PID(PB,TI,TD) and LBA.
2) In setup mode, lock level 1 (LOCK1) and lock level (LOCK2) are set to “0000”.
3) RUN/STOP mode is set to RUN mode.
4) Set the setting mode “AT” parameter to “ON”.
(When auto-tuning is finished, it is automatically set to “OFF”.)
The auto-tuning function automatically calculates and calculates
the optimal PID value and LBA setting time, and sets the values to each parameter.
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Auto tuning (Autotuning)
