Burkert Type 8635 - Manual (Page 20)

18 - 8635
S
YSTEM
D
ESCRIPTION
(S/HART)
Characteristics of the positioner software
Supplementary function Effect
Positioner with supplementary functions
AUTOTUNE
Automatic adaptation of positioner to the control valve
in use.
Tight-closing function
Valve closes tight outside the control range. A value is
specified (in %) from which the actuator is completely
exhausted (at 0%) or pressurized (at 100%).
Stroke limitation
Mech. valve piston movement only within a defined
stroke range.
Limitation of correcting speed
Actuator takes a preset time to move from OPEN to
CLOSED or from CLOSED to OPEN.
Signal range splitting
Splitting of the standard signal range over 2 or more
SIDE Controls.
Correction charakteristic for
adaptation to the operating curve
Linearization of the process curve can be carried out.
Insensitivity range
The positioner responds only above a control difference
to be specified.
Direction of action of the controller
setpoint
Reserve of direction of action of the setpoint.
Direction of action of the actuator Reserve of direction of action of the actuator.
Safety position Valve moves to a defined safety position
Code protection Blocking of the keypad or menu
Factory reset Reset to factory settings
Repeater (option)
Analog feedback of position Feedback of the values POS and CMD
Binary outputs
Feedback of various controller conditions (e.g. sensor
breakage or controller in safety position).
Hierarchic operating concept for simple operation with the following levels
Process operation
In this level, you switch between Automatic and Manual
operation.
Configuration
In this level, you specify on commissioning certain
basic functions and configure supplementary functions
as required.
Communication via HART protocol (option)
HART Hand Terminal Operation of the SIDE Control via a HART Hand Terminal