leaves the permissible temperature range af
-
fect the condensed state and cause a fault
alarm to be displayed depending on its clas
-
sification.
The optional EXPERT
+
diagnostics generates
additional diagnostic alarms which are in
-
cluded in the condensed status with their
corresponding status classification.
When a diagnostic alarm is issued by
EXPERT
+
, this is displayed by Code 79 (see
error code list).
5.8 Zero calibration
In case of discrepancies with the closing po
-
sition of the valve, e.g. with soft-sealed
plugs, it may be necessary to recalibrate the
zero point.
Note: We recommend re-initializing the
positioner in case of deviations in the zero
point over 5 %.
Enable configuration:
Default OFF
Turn
→
Code 3, press ,
turn
→
ON, press .
After enabling:
Default MAX
Turn
→
Code 6, press ,
turn
→
ZP, press .
4
Press INIT key.
Zero calibration is started, the positioner
moves the control valve to the CLOSED posi
-
tion and readjusts the internal electrical zero
point.
The valve briefly moves from the cur-
rent travel/angle of rotation position
to the closed position.
5.9 Reset to default values
This function resets all parameters to the fac-
tory default values (see code list in sec
-
tion 15.1).
Enable configuration:
Default OFF
Turn
→
Code 3, press ,
turn
→
ON, press .
EB 8384-4 EN 71
Start-up and settings
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