GOSSEN-METRAWATT GMBH 26
Configuration of the controller with continuous output (marking A3)
Continuous output = actual value (configuration digit „Unit of measure of the sensor / continuous output“ = 0, 1, 2, 3)
– The controller types act as with marking A2.
– The output of the actual value (for different controllers diff. between actual values) is scaled with parameters rn L and rn H.
Continuous output = regulation ratio (configuration digit „Unit of measure of the sensor / continuous output“ = 4, 5, 6, 7)
– The switching output I is inactive.
– The different types of continuous controllers result from the configuration digit „Controller type“:
Code Controller type Remarks
Limit monitor Output of a regulation ratio adjustable with parameter Y H, if actual value < set point
Positioner Output of a regulation ratio adjustable with parameter Y St.
Cont. contr. with falling characteristics A PDPI control algorithm without overshoot controls the continuous output every 0.5 s.
An output filter provides for as smooth a trend of the positioning signal as possible.
The time constant of an additional actual value is set by means of tc.
Cont. contr. with rising characteristics
Split range controller
Continuous controller with falling characteristics for positive regulation ratios (increment set point).
Negative regulation are output with switching output II (decrement set point).
The positioning cycle for switching output II is at least tc. The deadband dbnd suppresses a quick
change between continuous output and switching output II, without offset.
,
No practice-relevant function
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