11.4.1 Setting direction of actual value display
X-DIR:
Correcting variable direction
Here the display direction (rising or falling) and the position feedback can be adjusted.
Pressurization state
Outlet A1
X-Direction Displayed x-value Allocated actual position x
vented
pressurized
RISE 0 %
100 %
0 %
100 %
vented
pressurized
FALL 100 %
0 %
100 %
0 %
Setp Dir:0
Set value direction
Setting the set value direction serves to reverse the direction of the set value.It is mainly required for split-range operation and for
single acting actuators with the fail safe "OPEN" setting (control function 2).
Stroke x [%]
Set value w [%]
Control function 2
Control function 2
Control function 1
NORMAL
NORMAL
INVERSE
OPEN
CLOSED
Setp Ramp:
Set value ramp
The set value ramp is eff ective during automatic operation and limits the speed of change of the eff ective set value. When
switching over from manual to automatic operation the eff ective set value is matched to the set value on the unit via the set value
ramp.
In the position SETP RAMP = auto the slower of the two travel times which have been established during initialisation is used for
the set value ramp.
Split Start:
Set value split range start
Split End:
Set value split range end
The parameters SPLIT START and SPLIT END in conjunction with the parameter SETP DIRECTN serve to limit the eff ective set
value range. In this way split range tasks with the curves
rising / falling
falling / rising
falling / falling
rising / rising
are resolved.
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