Burkert Type 1110 - Handbuch (Seite 36)

34 - 1110
DIGITAL INDUSTRIAL CONTROLLER
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Function block 19: 3-point step signal with external position
acknowledgement (Position control)
This signal serves to control motor-driven actuators on which a position
acknowledgement is provided by way of a potentiometer. The resistance value of the
acknowledgement potentiometer must be within the range from 1 k
Ω to 10 kΩ.
Adjustable parameters:
Psh: Switching hysteresis
Psd: Insensitivity zone
Figure 21: 3-point step signal
Function block 20: PID controller 1
This function block is a parameter-definable PID controller that is used as a main
controller for cascade control.
Adjustable parameters:
Kp: Proportional action coefficient / Gain
Tr: Reset time
Td: Derivative action time
Pdb: Dead area
CO0: Operating point
Relay output
Psh
Psd
SP
PV