Alignment; Aligning Without Assistance; Aligning Using Electronic Assist; Signal Normalizing - Balluff BLA 50A-002-S4 Betriebshandbuch

BLA 50A-002-S4
BLA 50A-001-S115
Balluff Light Array
3
Installation (continued)
Rotation angle
Tilt angle
Fig. 3-2: Angle tolerances
3.4

Alignment

The emitter and receiver must be so installed that the light
band strikes as close to the center of the receiver window
as possible. The emitter generates a light band with a
width of approx. 54 mm. The receiver window is 50 mm
wide. When correctly aligned the light band therefore
overhangs the two sides of the receiver window by approx.
2 mm.
3.4.1

Aligning without assistance

Surrounding the receiver window is a white area for better
seeing the light band as well as markings for precise
positioning.
Align the light band so that the laser line is centered on the
receiver window and another 1 to 2 mm of the light band
can be seen on the white screen (see illustration).
Light band edge
Fig. 3-3: Correct alignment
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Light band edge
Fig. 3-4: Light band too far to the right
Fig. 3-5: Light band too low
3.4.2

Aligning using electronic assist

Correct alignment can also be verified electronically. In the
main menu select Device settings → Live (see section
5.1 Live image (Monitor)), to display a live image.
Fig. 3-6: Correct alignment
Fig. 3-7: Light band incorrectly aligned, left edge of the CCD not
illuminated
3.4.3

Signal normalizing

Before using the sensor, the light intensity must be
normalized on the receiver. To do this, use the menu item
Device settings → Normalize (see section
normalizing and autoblanking).
5.2 Signal
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