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DT50-2 offers a function called "Shape Mode", which can be used to classify objects that are moved on a conveyor belt along the laser beam of the DT50-2.
Before the sensor can be put into operation with this function, a teaching process consisting of three steps is required:
Teaching the length of the reference object
Teaching the shape of the reference object
(Optional) Teaching the tolerance level of one or more reference object(s)
Prerequisites
DT50-2 (Part no. 1065661) with power supply
Conveyor system with plain ground, moving at constant velocity
Possibility of mounting the DT50-2 above the conveyor system
One or more reference objects ("good" objects)
Step-by-step instruction
Reset the DT50-2 to factory settings (recommended)
Go to - Set > Device > Reset
Switch to - Yes
Confirm with - Set
Switch User to "Advanced"
Go to - Set > Device > User
Switch to - Advanced
Confirm with - Set
Switch Mode to "Shape"
Go to - Set > Q1 Out > ModeQ1
Switch to Shape
Confirm with Set
Teach length of reference object
Go to - Set > Q1 Out > Teach > Length
Hit Set to start teach procedure
Move a reference object through track
Stop teach procedure with Esc
Teach shape of reference object
Go to - Set > Q1 Out > Teach > Shape
Hit Set to start teach procedure
Move a reference object through track
Teach procedure stops automatically. Success is indicated by Saved
Adjust threshold by teaching some more "good" objects
Go to - Set > Q1 Out > Teach > Q1Good
Hit Set to start teach procedure
Move another reference object through track. If only one object is available, use this one multiple times.
Matching value (in percent) is shown on display
Repeat this step a few times (approx. 3..5 recommended) with some more "good" objects.
Evaluate result
Go to Main menu. Scroll down to Shape output (starting with Shape, followed by a percentage value)
Let some objects move along the track. Have a look at percentage value on display and at switching output Q1 (indicated by yellow LED)
Recommended minimum object length
The recommended minimum length of an object depends on the speed of the conveyor system and the measurement speed parameter of the sensor. Based on the following table, you can select a suitable measuring speed for a specific application:
