Burkert SideControl 8791 valve positioner

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The 8791 positioner is the basic version of the SideControl 8792 and 8793 positioners and is specially designed for ease of operation. The SideControl 8791 features the same pneumatic positioning system for control accuracy and dynamics.

As it can be mounted in various different ways to linear and rotary actuators according to IEC534-6 and VDI/VDE 3845 (Namur) as well as to Bürkert process valves, the 8791 is flexible and suitable for a wide range of applications. The positioner is also suitable for use in harsh environments due to its compact, sturdy aluminium housing with protection class IP65/67.

Since there is no display and the software has been simplified, the 8791 positioner is a good alternative for applications where no further configuration on site is necessary or desired. The only controls on the device are used to call up preset values. Other parameters for the positioner can be configured from a PC connected via the RS232 interface, using PACTwareT.

The 8791 offers one solution for both single- and double-acting actuator systems. This allows customers to reduce their stock of controllers to a minimum. The positioning system features a control air pressure range of 1.4 to 7 bar and a high air power range of 7 to 100 L/min (150 L/min at 6 bar). When fully regulated, no control air is consumed.

The setpoint value is set and analog position value is read via a 4-20 mA current loop. Valve end position detection is by discrete inductive proximity switches. The operating voltage is 24 VDC ±10%.