Presence Sensor Positioning - Datalogic STS320 Series Installation Manual

PRESENCE SENSOR POSITIONING

The STS320 system comes with a pair of photocells that can be used to detect the pres-
ence of the tire on the conveyor and trigger the beginning and the end of the reading
phase. When used, they must be positioned and mounted at the conveyor belt level
depending on the size of the tires that must be handled.
Position the presence sensors according to the following procedure:
1. Retrieve the size of the minimum tire height (FOV
2. Determine the field of view along the conveyor direction (FOV
3. If the minimum tire height (H
In some cases the system can work with only one photocell.
If the minimum tire height (H
then only a single presence sensor is required and it must be mounted at the mid point
of the field of view as shown in Figure 8:
(W ).
min
distance. See the table below.
Model
STS320-00x
STS320-01x
STS320-10x
STS320-11x
STS320-20x
then both Reading Phase ON and Reading Phase OFF presence sensors are
required and they must be mounted at the H
vertical FOV as shown in the figure below:
Figure 7 - Top reading station with two presence sensors
Typical FOV @ Max. Distance
) is less than the FOV
min
min
) is greater than the FOV
min
PRESENCE SENSOR POSITIONING
) at the minimum tire width
v
) at the maximum
v
260 mm
211 mm
305 mm
214 mm
247 mm
/2 at the maximum distance,
v
distance from the edges of the
/2 at the maximum distance,
v
INSTALLATION GUIDE 7