From lab to production,
providing a window into the process
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Press or to move forward or back though the screens. Where adjustment is possible*, press or
to alter the values.
*If adjustment is not disabled in Configuration.
5. Tuning Error Description
Err Timeout
Timeout for Pulse experiment: Determined by empiric for pulse experiment of temperature
processes. At start of phase limit start timeout with one minute (60sec set for pressure controller)
When limit is reached the slope of the Pv is saved. At start of phase max reset timeout generator (4.5
minutes) Check active slope of Pv. When slope goes less then 0.35 of saved value, Save elapsed time
of the running experiment and reset timeout generator with 4.5 of elapsed time. At start of phase
Delta2 reset timeout generator (4.5 saved time) At start of phase Delta reset timeout generator (4.5
saved time)
Err limit
The process reaction goes into the wrong direction after setting the controller output pulse.
Err Parameter
The estimated process characteristic values are not valid
(Tg < 0.5 sec) or (Gain < 0.005)
Err Deviation
For pressure controller this is not used. For temperature controller we used this to monitor a
maximum deviation of 6% for PV.
Err InputFail
Indicate a fail state of measured Pv at screen for tuner state. Step experiment is a hidden option
activated by controller parameter (PreDiff > 1.0)
Err Timeout
Timeout at step experiment. No visible reaction of process value 1000 seconds after start of
experiment.
Err Step
Error_Step: Found a deep point of inflexion and the condition ([Tu * Vmax] >50.0) is true
Trend View
Active Alam(s)
Process Variable Trend
Setpoint Trend
(dotted)
Time Markers
(10 samples per marker)
Trend Upper Scale Value
Cursor Line
PV Value At Cursor Line
Trend Lower Scale Value
Sample Interval (or Time at
Cursor Line)
Trend View
