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3. Increase the automatic reset until the process becomes unstable, then decrease until
stability has been restored.
Note:
Allow enough time for the controller and process to adjust.
4. Initially add rate at a value between 1/4
5. Decrease Rate if the process overshoots/undershoots or oscillates excessively.
Note:
Rate can cause process instability.
6. After making all other adjustments, if an offset exists between the setpoint and the process
variable use the Bias (manual reset) to eliminate the error:
Below setpoint - use a larger bias value.
Or
Above setpoint - use a smaller bias value.
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Manual Tuning
- DIN Controllers & Indicators - Product Manual
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of the automatic reset value.
59305, Issue 5 – March 2005
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