www.gemu-group.com30 / 76GEMÜ 1436 cPos
15 Commissioning
When the supply voltage is connected, the product emits one
of the following two messages in its display after a short soft-
ware check:
A: The positioner is in automatic operation and reacts to the
externally specified set value.
M: The positioner is in manual operation and the valve posi-
tion can be specified manually using the keys.
The operating mode can be selected as follows:
Mode
AUTO
A: w XX.X: x XX.X
SETUP
Mode
Man
M: w XX.X: x XX.X
Mode
OFF
Automatikbetrieb
manueller Betrieb
r3w3
r3w3
Service
1
Konfigurationsmenü
automatic operation
manual operation
configuration menu
15.2 Without default setting (when supplied without a
valve)
NOTICE
Initialization failure
▶ It may be necessary to close the internal positioner
throttles a little (V1 and V2 for single acting actuators
and V1, V2, V3 and V4 for double acting actuators) if the
actuator volume is very low, in order to increase the valve
travel time. This should be done only during initialization
in the adjTime program step. A modification to the
throttle setting independent of initialization may lead to
error messages and/or poor control results. It is therefore
recommended to carry out initialization again after every
change of throttles
NOTICE
▶ Experience has shown that valve travel times of approx.
1–2 seconds produce optimal positioner results. It may
not be possible to reach this operating time range for
large-volume actuators.
NOTICE
▶ For valves with control function 8 (double acting with
opening spring), for which automatic control function re-
cognition has not worked, the parameter CtrlFn must be
converted to DNO in the manual initialization sequence.
After assembly and all electrical and pneumatic connections,
the positioner must be initialised.
While doing this, it is possible to choose between automatic
initialization and manual initialization.
Automatic initialization can be started as follows via quick
commissioning:
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