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filter with time constant specified by FILT parameter which is contained in setup menu. The default value of
FILT is 0.5 sec. before shipping. Adjust FILT to change the time constant from 0 to 60 seconds. 0 second
represents no filter is applied to the input signal. The filter is characterized by the following diagram.
Note
The Filter is available only for PV1, and is performed for the displayed value only. The controller
is designed to use unfiltered signal for control even if Filter is applied. A lagged (filtered) signal, if used for
control, may produce an unstable process.
5.2.4.21 Auto-Tuning and Manual Tuning
The Auto-tuning and Manual tuning can be executed by pressing the mode key in the Process
control module real-time display page. Press and Press Real Time and Press C1 to access the
Process Control module C1real time display page. In similar way the real time pages of other process
control modules also can be accessed.
Press Mode and select Auto-tuning to perform auto tuning for the process. During Auto-tuning
process the PV display will blink continuously.
Press Mode and select Manual control to perform manual tuning for the process. In this the user
can control the process manually by adjusting the output value manually.
Press Back to exit auto tuning or manual tuning when it is in progress.
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