8.9 Group E3: PID Control
8.9.1 PID Basic Configuration
PID control is a common approach used in process controls such as flow con-
trol, pressure control, temperature control and other process controls. Propor-
tional, integral and derivative operations are based on the differences between
reference values and their feedback, to adjust the output frequency of the fre-
quency converter, form a negative feedback system, and keep the controlled val-
ues stable at reference values.
The basic control principle is shown in the figure below:
Fig. 8-44: PID control principle
E3.00 PID reference channel
Setting range 0 ~ 7
Minimum unit 1
Factory default 0
● 0: No PID control
● 1: Panel potentiometer
● 2: Panel digital setting
● 3: Analog input voltage (AIV)
For reference channel AIV, the corresponding reference frequency is depend-
ent on the settings of parameter E0.10 and parameters E0.20 ~ E0.28.
● 4 : Analog input current (AIC)
For reference channel AIC, the corresponding reference frequency is depend-
ent on the settings of parameter E0.12 and parameters E0.20 ~ E0.28.
● 5: Communication
● 6: Analog digital setting E3.03
● 7: Rotation speed digital setting E3.04
EFC 3600
Bosch Rexroth AG
Parameter Settings
DOK-RCON03-EFC-3600***-IT03-EN-P
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