Burkert Type 1067 - Manual (Page 59)

POSITIONER 1067
E-7-
2 DESCRIPTION
Fig. 5 Position control
Position controller Valve actuator PWM element Setposition
Fig. 6 Process control
Process
Auxiliary control loop
Main control loop
Set
position
2.4 Safety position
In the event of power failure, the functioning of the actuator ensures that a pre-determined end position
is adopted (opened or closed by spring pressure).
Process
controller Position controller PWM-element Valve actuator