Burkert 8681 - 5 System Description; Intended Application Area; General Description

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System Description
5 SYSTEM DESCRIPTION
5.1 Intended application area
The control head Type 8681 has been designed for use as an actuator for pneumatically operated process
valves and / or for recording the switching status of these.
5.2 General description
The control head Type 8681 is used for actuating pneumatically operated process valves.
Forprocessvalveactuation,thecontrolheadcanbeequippedwithuptothreesolenoidvalves.
For the recording and feedback of the process valve switching positions to a higher-level control, the control
headhasbeenequippedwithacontact-freepositionmeasuringsystemwhichoperateswith3discrete,
adjustablefeedbacksignals(Teachfunctions).
The control head and the process valve are interconnected by an adapter. This produces an integrated,
compact and decentralised system of feedback, actuation and valve function. The following advantages
over centralised solutions working with valve clusters are achieved:
•low installation expenditure
•easy start-up
•
higherapplication-specicexibility
•shorter switching times and less air consumption due to shorter distances between the pilot valves and
the process valve. Up to 3 solenoid valves in the control head serve as pilot valves.
Various pneumatic and electrical connection or communication variants are available, and described in
detail below.
english
Control Head Type 8681