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4 Basic Operation
E5@C-T Digital Temperature Controllers User’s Manual (H185)
4-9 Determining PID Constants (Autotuning and Manual Setting)
4
4-9 Determining PID Constants
(Autotuning and Manual Setting)
There are two types of autotuning for the E5@C-T.
z Normal Autotuning
• Autotuning is executed for the currently selected PID set.
• The current SP when autotuning is specified is used as the autotuning SP.
• You can use normal autotuning when you specify the PID set for each selected program, or when
you automatically select PID sets according to application temperature zones.
z Autotuning All PID Sets (Autotuning)
• You can automatically execute autotuning in order for more than one PID set.
• The SP for autotuning each PID set is the fixed SP for the first execution of autotuning, the mean
value of each PID set temperature zone for the middle zones, and the All PID AT Upper Limit SP
for the last execution of autotuning.
• You can use this type of autotuning only when you use automatic selection of PID sets according
to temperature zones.
• For details on autotuning all PID sets, refer to 5-14 Determining PID Constants for PID Sets
(Autotuning for All PID Sets).