Type 8791

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5.

Performance specifications

5.1. Signal flow diagram

Position control loop

Set-point

position value

CMD

POS

Position controller

Control system

Position measuring system

Position control loop

Valve

opening

Proportional

valve

-

+

Xd1

B1

P

K

Z1

E1

Additional software options of positioner SideControl Type 8791 (extract)

SideControl BASIC functions

• Automatic commissioning of control system

• Digital input (safety position)

• Analogue position feedback (optional)

DIP-Switch activated device

• Close tight function

• Inversion of operating direction of setpoint signal

• Linear characteristic curves selection or customised programming (software interface)

• Manual and automatic operation

Communications software with activatable and parameter driven functions

• Customised programming of transmission characteristics

• Selection of setpoint signal

• Range splitting setpoint signal

• Limitation of valve stroke

• Limitation of operation speed

• Definition of safety position

• Signal failure detection