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Setpoint characteristic curves, standardization of manipulated variables, and tight closing
function
Input of the setpoint turning points is only possible if the "'12.SFCT' Setpoint function
(Page 149)" parameter is set to "FrEE". You can only enter one monotone rising characteristic
curve and two consecutive interpolation points must differ by at least 0.2%.
8.4.2.7 '34.DEBA' Deadband of closed-loop controller
Possible settings: ● Auto
● 0.1 ... 10.0
Purpose: This parameter is used with the "Auto" setting to adjust the dead‐
band in automatic mode continually and adaptively to the require‐
ments of the control loop. If a regulator oscillation is detected, then
the deadband is incrementally enlarged. The reverse adaptation
takes place using a time criterion.
The deadband is set using the values 0.1 to 10.0. The value is given
in percent. Control oscillations can then be suppressed. The small‐
er the deadband, the better the control accuracy.
Factory setting: Auto
Parameter assignment
8.4 Description of parameters
SIPART PS2 with 4 to 20 mA/HART
150 Operating Instructions, 11/2019, A5E00074631-AE
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