VAC D500, Руководство пользователя

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… 9 Operation
Parameter descriptions
Menu Easy Setup
Menu / parameter Value range Description
Easy Setup
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Actuator Type Linear, Rotary Use this parameter to configure the positioner for operation on a linear actuator (sensor range ±30°) or
on a rotary 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.
Bolt Position Bolt On Lever, Bolt On Stem For the linearization, when attaching to linear actuators, a differentiation is made concerning the
mechanical part of the position transfer to which the bolt is permanently mounted.
• Bolt On Lever (actuator bolt on the potentiometer lever)
• Bolt On Stem (actuator bolt on the valve stem)
Factory setting: Bolt On Lever
Vent Position Position 0%, Position 100% Use this parameter to specify which position is to be shown in the display when output 1 of the
positioner is completely vented.
Tight Shut 0% 0.0 to 45.0 The shut-off value is a percentage of the working range from which the 0 % position is approached.
Once the specified position limit value is reached, the actuator moves into the 0% end position.
Control at 0% On, Off Use this parameter to set the end position behavior. If the parameter is activated, the 0 % position is
controlled. Otherwise, the actuator moves into the 0 % mechanical end position.
Tight Shut 100% 55.0 to 100.0 The shut-off value is a percentage of the working range from which the 100 % position is approached.
Once the specified position limit value is reached, the actuator moves into the 100 % end position.
Control at 100% On, Off Use this parameter to set the end position behavior. If the parameter is activated, the 100 % position is
controlled. Otherwise, the actuator moves into the 100 % mechanical end position.
DB Approach Fast, Medium, Slow This parameter specifies the speed at which the dead band is approached.
In rare cases, overshooting can occur when the valve position
is being compensated. This can be prevented by reducing the speed of
the dead-band approach (DB approach).
Dead Band Calc. Active, inactive Use this function to activate / deactivate the control behavior on the dead band.