Structure And Function - Burkert TopControl Basic 8694 REV.2 Quick Start Manual

Type 8694 REV. 2

Structure and function

5 STRUCTURE AND FUNCTION
Positioner
Actuator
Valve body
Actuator + Valve body = Process valve
Fig. 1: Structure 1
Positioner Type 8694 is an electropneumatic position controller for
pneumatically actuated control valves with single-acting actuators.
Together with the pneumatic actuator, the positioner forms a func-
tional unit.
The control valve systems can be used for a wide range of control
tasks in fluid technology and, depending on the application condi-
tions, different process valves from the Bürkert range can be com-
bined with the positioner. Angle seat valves, straight seat valves,
diaphragm valves or ball valves are suitable.
The position of the actuator is regulated according to the position
set-point value. The nominal position value is specified by an
external standard signal.
Electrical connection
(cable gland or circular
plug-in connector)
Pressure limiting valve
Communications interface
DIP Switches
Additional exhaust air port
(label: 3.1)
only for Type 23xx and 2103
with pilot valve system for high
air flow rate
(actuator size ø 130)
Fig. 2: Structure 2
english
LED
Exhaust air port
(label: 3)
Pilot air port
Buttons
(label: 1)
Basic housing
Pilot air outlet only for
series 26xx and 27xx
Air intake filter
7