Start initialization:
4
Press INIT key!
The positioner switches to manual oper
-
ating mode.
The blocking position is indicated.
Note: As initialization has not been carried
out completely, the error code 76 (no emer
-
gency mode) and possibly also error code
57 (control loop) may appear on the dis
-
play.
These alarms do not influence the
positioner’s readiness for operation.
Cancel the blocking position and change to
automatic operating mode
For the positioner to follow its reference
variable again, the blocking position must
be canceled and the positioner must be set
to automatic operating mode as follows:
Turn
→
Code
1
Press , Code
1
and blink
Turn in order to move the valve slightly
past the blocking position.
Press to cancel mechanical blocking.
Turn
→
Code
0
Press , Code
0
blinks.
Turn
→
AUtO
Press . The positioner switches to auto
-
matic operating mode. The current valve po
-
sition is indicated in %.
Note: If the positioner shows a tendency to
oscillate in automatic operating mode, the
parameters K
P
and T
V
must be slightly cor
-
rected. Proceed as follows:
Set T
V
to 4 (Code 18).
If the positioner still oscillates, the gain K
P
(Code 17) must be decreased until the
positioner shows a stable behavior.
Zero point calibration
Finally, if process operations allow it, the
zero point must be adjusted according to
section 7.7.
7.7 Zero calibration
In case of discrepancies with the closing po-
sition of the valve, e.g. with soft-sealed
plugs, it may become necessary to
recalibrate the zero point.
We recommend re-initializing the positioner
in case of deviations in the zero point over
5 %.
NOTICE
The valve briefly moves from the current
travel/angle of rotation position to the
closed position.
Note: The positioner must be connected to
the supply air to perform the zero calibra
-
tion.
Enable configuration:
Turn
→
Code 3
Press , Code 3 blinks
Turn
→
ON
EB 8384-5 EN 63
Start-up – Settings
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