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15 Commissioning
15.2.2 Manual initialization
When manual initialization is started, the positioner goes
through an initialization program that is similar to the auto-
matic initialization. The various program steps must, however,
be started and confirmed by the operator during manual ini-
tialization by pressing the key.
Manual initialization should only be applied if the automatic
initialization does not achieve satisfactory control character-
istics or in case of problems (e.g. leakage).
The menu items goClose and goOpen should be executed
several times for very small valve strokes in order to ensure
an optimum adaptation of the positioner to the valve.
Emergency operation of the automatic control system is pos-
sible if at least the goClose and goOpen menu items are car-
ried out.
In order to prevent incorrect operation, the parameters from
manual initialization are only accepted when they comply with
the requirements for correct function.
- For manual initialization proceed as described on the next
page.
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