1
/
4
-DIN,
1
/
8
-DIN &
1
/
16
- DIN Controllers & Indicators - Product Manual
Page 92 Manual Tuning 59305, Issue 5 – March 2005
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
th
and 1/10
th
of the automatic reset value.
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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