User`s guide

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24 VDC
+–
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2
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4
RETRAIN (VIOLET)
24 VDC+ POWER IN (RED)
GROUND (BLACK)
INPUT COMMON (WHITE/VIOLET)
Checker sources current
External Retrain
You can configure both Part Finding Sensors and Pattern Sensors to be retrainable by checking
External Retrain in the sensor control panel.
Whenever Checker receives a signal on the RETRAIN line, Checker retrains any retrainable Part
Finding Sensors and Pattern Sensors using the part of most recently acquired image that lies
within the retrain region.
When External Retrain is enabled for a sensor, the yellow corner markers indicate the region
that is used to retrain the Sensor when an External Retrain signal is received. Sensors can be
retrained in both Setup mode and in Run mode.
In Setup mode, can manually signal an External Retrain by clicking MainMenu►External
Retrainon SensorView Teach Pendant or selecting Checker->Retrain or pressing F9 on the PC.
Checker indicates that it has successfully retrained by quickly blinking its lights twice. If it could
not retrain the part, it blinks its lights slowly three times. You can also configure a Checker output
line to signal when an External Retrain succeeds or fails.
1 Part nding sensor detects part normally.
2 With a new part, the Part Finding Sensor fails.
3 Apply a pulse (minimum 15 ms) on RETRAIN line.
4 After retraining, Part Finding Sensor now nds new part.
This example shows Part Finding Sensor being retrained: