SG_FSE_SiplaceHF_HF3_00193901-05_eng.pdf - 第409页

1 - 23 S tudent Guide SIPLACE HF/HF3 Edition 09/2005 9 Modular conveyor 23 Fig. 9.2 - 12 Focussing the laser beam Please Note: When you move the p aper , the beam must follow along the edge of the PCB as accurately as po…

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Student Guide SIPLACE HF/HF3

9 Modular conveyor Edition 09/2005

9.2.6 Setting and checking the laser light barrier for the stopper position

Danger:

Laser beams of laser class 2 occur at the laser light barrier transmitters, so no additional protective

measures are required.

You should never look into the laser beam, however.

Do the adjustment of the LASER Diode Beam direction only from the rear side of the LASER (left

machine side). Keep right side machine covers closed!

The laser beam deflection has greatest effect at the maximum conveyor width, it should always

be calibrated at the maximum conveyor width.

Please Note:

Check or reteach the PCB reference corner after adjustment of the laser light barrier!

Fig. 9.2 - 11 Laser light barrier

Procedure:

➠ Set the maximum conveyor width.

➠ Choose General functions --> Cycle mode --> Safety mode switch on.

➠ Activate the relevant laser diode using the input/output functions in SITEST.

➠ Check the course of the laser beam. You can make the laser beam visible using a light-colored

PCB or a white sheet of paper (see Fig. 9.2 - 12).

➠ If necessary, use the adjusting screws to set the laser beam to the center of the receiver.

➠ Check the PCB reference corner and reteach, if necessary.

Laser diode

Laser receiver

Adjusting screws

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Student Guide SIPLACE HF/HF3

Edition 09/2005 9 Modular conveyor

Fig. 9.2 - 12 Focussing the laser beam

Please Note:

When you move the paper, the beam must follow along the edge of the PCB as accurately as pos-

sible, with minimal deflection to the left and right.

9.2.7 Setting the light barrier in the placement area

Function: 9

– Switching on the laser light barrier

– Starting the PCB braking, see Fig. 9.2 - 13.

The light barrier in the placement area can be mounted in three different positions. The light barrier

is fitted in the direction to the input conveyer. The light barrier then trigger the LASER stopper and

slow down the PCB movement. The

slow PCB approach is teached automatically via soft-

ware.The travel profile for braking the PCB (see Fig. 9.2 - 13) is started in good time to allow the

PCB to be stopped reliably at the laser light barrier after no more than 100 ms.

Paper

PCB with the laser

beam parallel to it

Visible

laser beam

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Student Guide SIPLACE HF/HF3

9 Modular conveyor Edition 09/2005

Fig. 9.2 - 13 Diagrams PCB braking

Due to the automatical teaching of the Slow PCB approach the time to reach the stopper position

is constant irrespective of the PCB weight. The transport time keeps constant.

Direction of PCB transport

Time (t)

< 100 ms

Light barrier

Laser

Travel profile

braking process

Start End

Placement areaInput belt

2nd board

Time (t)

Speed (v)

150 ms

Laser

Travel profile

braking process

Start End

Input belt

1st board

Speed (v)

Placement area

Light barrier