An unsuccessful plotting of the reference
graphs is indicated on the display by Code
81 (see error code list).
After the initialization has been successfully
completed, the positioner still works prop
-
erly, even though the reference graph plot
-
ting has not been completed successfully.
The plotting of the reference graphs can be
interrupted by pressing .
The reference graphs are required for the
extended diagnostic functions of EXPERT
+
.
5.6.1 Initialization modes
After enabling configuration with Code 3
and accessing Code 6, you can choose one
of the initialization modes MAX, NOM,
MAN or SUb to start initialization.
ZP, the zero calibration is described in sec-
tion 5.8 on page 71.
MAX – Initialization based on maximum
range
Initialization mode for simplified start-up for
valves with two clearly defined mechanical
travel stops, e.g. three-way valves.
The positioner determines travel/angle of
rotation of the closing member from the
CLOSED position to the opposite side and
adopts this travel/angle of rotation as the
operating range from 0 to 100 %.
Enable configuration:
Default OFF
Turn
→
Code 3, press ,
turn
→
ON, press .
After enabling:
Default MAX
Turn
→
Code 6, press ,
turn
→
MAX, press .
4
Press INIT key to start initialization!
The initialization procedure may take
several minutes, depending on the
actuator size, as the valve moves
through its entire travel/angle of ro-
tation range.
Positioners with EXPERT
+
diagnostic func
-
tions automatically start plotting the refer
-
ence graphs after the initialization process
has been completed. See page 63.
Note: For this MAX initialization, the
positioner cannot indicate the nominal
travel/angle of rotation in mm/° at first,
Code 5 remains disabled. In addition, the
lower (Code 8) and the upper (Code 9)
x-range value can only be displayed in %
and modified .
If you want the display to indicate mm/°,
proceed as follows after configuration has
been enabled:
64 EB 8384-4 EN
Start-up and settings
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