X.control – parameterization of the positioner – Burkert Type 8793 User Manual
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119
Auxiliary functions
26.2.8.
X.CONTROL – Parameterization of the positioner
This function can be used to re-adjust the parameters of the positioner.
The re-adjustment should only be made if it is required for the application.
The parameters for
X.CONTROL are automatically set with the exception of DBND (dead band) when specifying
the basic settings by running
X.TUNE.
If the setting for DBND (dead band depending on the friction behavior of the actuating drive) is also to be
automatically determined when
X.TUNE is running, X.CONTROL must be activated by incorporating it into
the main menu (MAIN).
When
X.TUNE is running, all previously re-adjusted values are overwritten (except the X.TUNE function
was manually parameterized).
DBND
Insensitivity range (dead band)
KXopn
Amplification factor of the proportional portion (for aerating the valve)
KXcls
Amplification factor of the proportional portion (for bleeding the valve)
KDopn
Amplification factor of the differential portion (for aerating the valve)
KDcls
Amplification factor of the differential portion (for bleeding the valve)
YBfric
Friction correction (for aerating the valve)
YEfric
Friction correction (for bleeding the valve)
EXIT
Enter
value
ENTER
INPUT
*
OK
X.CONTROL
DBND 1 %
KXopn 1
KXcls 1
KDopn 0
KDcls 0
YBfric 0
YEfric 0
* If the submenu is left by pressing the
ESC
key, the value remains unchanged.
Figure 68:
Operating structure X.CONTROL
DBND.. . ..Insensitivity.range.(dead.zone).of.the.positioner.
Input the dead zone as %, relating to the scaled stroke range;
i.e.
X.LIMIT Max - X.LIMIT Min (see Auxiliary function “26.2.6. X.LIMIT – Limits the
).
This function causes the controller to respond only from a specific control difference; as a result the solenoid
valves in the Type 8792/8793 and the pneumatic actuator are protected.
english
Type 8792, 8793