Fig. 27: User curve
‘Tight close’ menu
Mode
The ‘Mode’ parameter defines the tight closing behaviour. For tight closing the valve moves into the
seat with the maximum control force of the drive. The closing function can be activated at one or both
end positions. The tight closing function becomes effective when the setpoint position specification
reaches the lower value or the upper value for the tight closing.
Value Description
inactive Factory setting: tight closing inactive.
Lower value active Tight closing for upper value of the tight closing limit active.
Upper value active Tight sealing for lower value of the tight closed limit active.
Both values active Tight sealing active for lower and upper value of the tight closing limit.
Tab. 31: Mode
If stroke limitation is active in an end position, the tight-closing function can no longer be activated
there. If it is not possible to change the mode, a message appears on the display.
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