Description; Characteristics And Possible Applications - Burkert 1067 Manuel Utilisateur

2 DESCRIPTION

POSITIONER 1067
2.1 Characteristics and possible applications (overview)
The 1067 positioner is an electropneumatic position controller for pneumatically actuated continuous
valves. The device includes the following main functional groups: a feedback/positional transducer,
an electropneumatic system and a microprocessor electronic system. The feedback/positional
transducer measures the actual position of the continuous valve. The microprocessor electronic
system continuously compares the actual position (actual value) with a desired position value that
was preset via the standard signal input and supplies the result to the position controller. If an error
exists, the electropneumatic system causes the actual position to be appropriately corrected.
The 1067 positioner can be fitted to various continuous valves (e.g. valves with piston, membrane
or rotary drives and with single or double action). Three variant forms of the basic device are offered
that differ in their fixing options and feedback/positional transducers
In variant 1, an internal feedback/positional transducer is used that takes the form of a rotary
potentiometer.
In variant 2, an external linear potentiometer serves as feedback/positional transducer.
In variant 3, an external linear potentiometer serves as feedback/positional transducer and the
positioner is mounted on a DIN rail and not on the valve directly.
The positioner also implements a PID controller by means of which, in addition to position control,
process control (e.g. level, pressure, flow or temperature control) can be achieved in the form of
sequence control.
A liquid-crystal display and a keypad with three keys are provided for operating the positioner. An
operating concept with the following graded operating levels has been implemented:
- Process operation
This level allows switching between automatic and manual operation, and enables manual actuation.
- Configuration
Configuration level is used to specify certain basic functions when the positioner is taken into service
and, if necessary, to configure additional functions.
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