Actuator - Actuator Type; Sprng_Y2 - Spring Action (Y2); Dang_Dn - Dead Angle Close; Dang_Up - Dead Angle Open - ABB TZIDC Manual

TZIDC, TZIDC-200 DIGITAL POSITIONER | COI/TZIDC/TZIDC-200-EN REV. B
ACTUATOR – actuator type
With this parameter you can configure the positioner for
operation on a linear actuator (sensor range ±30°) or on a part-
turn actuator (sensor range ±45°). No mechanical modifications
to the positioner are required.
Note
After changing the actuator type, it is recommended that you
run Auto Adjust to prevent linearity errors.
Selection
LINEAR Linear actuator
ROTARY Part-turn actuator
SPRNG_Y2 – spring action (Y2)
CAUTION
Risk of injury!
Incorrect entries may result in the actuator traveling
to a mechanical stop at full speed.
Use this parameter to specify the end position to which the
reset spring of the pneumatic actuator drives the valves and
fittings in the event that the power supply fails.
The corresponding end stop is determined during Autoadjust. If,
however, only the control parameters are determined
(STANDARD, see parameter ADJ_MODE), the spring action must
be entered manually.
The direction of rotation of the sensor shaft should be selected
as a parameter (viewing direction onto the open housing), if the
safety position is approached by spring force (actuator vented
via OUT1). With double acting actuators, the spring action
corresponds to the pressurizing of the pneumatic output OUT2.
CLOCKW
Stop reached turning clockwise
CTCLOCKW Stop reached turning counterclockwise
DANG_DN – Dead Angle Close
Use this parameter to cut off the unusable range of the valve
flow characteristic curve from the point of view of control.
Dead Angle Close is a percentage of the operating range to
which the valve is moved when the input signal is 4.16 mA.
DANG_UP – Dead Angle Open
Use this parameter to cut off the unusable range of the valve
flow characteristic curve from the point of view of control.
Dead Angle Open is a percentage of the operating range to
which the valve is moved when the input signal is 19.84 mA.

BOLT_POS - actuator bolt position

The installation type of the actuator bolt for the potentiometer
has a decisive influence on the linearization of the potentiometer
signal.
This installation type is taken into account in the algorithm
through the BOLT_POS function. The following options can be
selected:
• STEM (actuator bolt on the valve spindle)
• LEVER (actuator bolt on the potentiometer lever)
For detailed information about the position of the actuator bolt,
see the operating instructions.
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