Gear Tooth Detection

Edge Detection

Register Mark Detection on Clear Film

Packaging Film

Register Marks

Figure 2. Typical Applications

LED Indicators

The Slot Sensor features two LED Indicators: Power (green) and Signal (amber). They indicate the following:

Green ON: Power ON

Amber ON: Sensor sees light

Amber flashing: Excess gain is marginal (1 to 1.5×) in light condition

Select Light Operate/Dark Operate

Connect the gray wire to +V (10 V dc to 30 V dc) for Dark Operate; and to dc common (or open) for Light Operate. See wiring diagrams.

Wiring Diagrams

3

1

2

4

5*

10-30V dc

L

L

+

–

Wiring Key

1. Brown

2. White

3. Blue

4. Black

5. Gray*

*For Dark operate, connect gray wire to + (brown). For Light operate, connect gray wire to - (blue).

Note: Quick disconnect (QD) wiring diagrams are functionally identical.

Adjust the Sensitivity

Adjust the sensitivity by turning the 4-turn clutched Sensitivity potentiometer with a small slotted screwdriver.

1. Apply power to the sensor.

2. Turn the potentiometer fully counter-clockwise, 4 full turns or more to set the sensor to the minimum sensitivity.

3. Present the Light condition.

If the amber Signal Condition indicator is ON, that is the Light condition sensitivity position. If not, proceed to the next step.

4. Turn the potentiometer clockwise, just until the amber Signal Condition indicator turns ON and note the position of the potentiometer.

5. Present the Dark condition.

6. Turn the potentiometer clockwise, just until the amber Signal Condition indicator turns ON, and note the position of the potentiometer.

7. For maximum reliability, the difference between these two positions should be at least one full turn. Set the sensitivity midway between the

two positions for best sensing results.

If the object to be sensed is very thin and non-metallic, the sensor may emit too much light energy for the object to completely block the beam. To

test this, place the object in the sensing position, and decrease the sensitivity until the amber LED goes OFF. Remove the object; verify that the

indicator comes ON solidly. If this does not occur, investigate other sensing alternatives.

SL30 Series Slot Sensor

2

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P/N 56407 Rev. D