ABB HART Industrial IT enabled TZIDC, Operating Instructions Manual

Page: 16 / 69

16 Electro-pneumatic positioner TZIDC 41/18-79 EN
5. Adjust the stroke
The scale on the lever indicates the relevant points for the various valve stroke ranges.
You can adapt the valve stroke range to the operating range of the position sensor by
shifting the bolt with follower pin in the oblong bore hole of the lever. When the link point
is shifted to the inside, the position sensor’s rotation angle is increased; shifting to the
outside decreases the angle.
Set the stroke range in such a way that the used rotation angle of the position sensor is
as great and as symmetrical around the center position as possible.
Recommended range for linear actuators: between -28° and +28°
Minimum angle: 25°
IMPORTANT
After mounting, check whether the positioner operates within the sensor
range.
Check the unit for proper mounting after having made the pneumatic and
electrical connection (see chapter "Commissioning" on page 26).
Fig. 10 Positioner linkage
decrease increase