Deba' Deadband Of Closed-Loop Controller - Siemens 6DR50 Series Operating Instructions Manual

Setpoint characteristic curves, standardization of manipulated variables, and tight closing
Input of the setpoint turning points is only possible if the "'12.SFCT' Setpoint function
(Page 162)" 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%.
9.4.2.7

'34.DEBA' Deadband of closed-loop controller

Possible settings:
Purpose:
Factory setting:
SIPART PS2 with and without HART
Operating Instructions, 09/2014, A5E00074631-12
function
• Auto
• 0.1 ... 10.0
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. Control oscilla-
tions can then be suppressed. The smaller the deadband, the bet-
ter the control accuracy.
Auto
Parameterizing/addressing
9.4 Description of parameters
163