Setting with limited travel range
Travel calibration is usually based on the
maximum travel of the control valve.
If, however, the maximum possible travel is
to be limited to a smaller travel end value,
press the button (4) once at the start of cali
-
bration while the signal lamp blinks for
10 seconds. As a result, travel calibration
via the potentiometer gear with rated travel
15 or 30 is limited to 6 mm. Each time the
button is pressed, the travel range is in
-
creased by 1 mm.
If, for example, a control valve designed for
15 mm is to be operated with a limited
travel range of 10 mm, press the button (4)
5 times during the 10 second time limit. The
top signal lamp (8) flashes each time the key
is pressed.
Reporting defined events
At the binary output (terminal 83 and 84),
predefined events can be indicated (see
EB 8331-2 EN) during positioner operation
and transmitted to a control room.
5 Retrofitting additional
electrical equipment
The actuator can be subsequently equipped
with two limit switches, two potentiometers
or a digital positioner.
Depending on the actuator version used, the
actuator board needs to be replaced as
well.
The actuator version is marked on the name
-
plate, e.g. model 3374-11000002000.
When ordering additional electrical equip
-
ment from the manufacturer, make sure to
include this model number in the order.
Caution!
When installing electrical equipment, make
sure the supply voltage and the signal input
are disconnected. Only use power interrup-
tion devices which are protected against un-
intentional reconnection of the power sup-
ply.
Note!
It is recommendable to slightly apply lubri
-
cant (e.g. Vaseline) to the spindles on the
gear faces and to the sides of the cogs.
EB 8331-1 EN 17
Retrofitting additional electrical equipment
