Baumer BA Scatec10 15 User Manual

Page 15

User manual Scatec-10 / -15

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Baumer Electric AG

Version 2011-03

www.baumer.com

Frauenfeld, Switzerland

A helpful rule of thumb is:

Output pulse length p in milliseconds must be shorter than 1.2 million divided by the
intended production rate given in copies per hour

Example:

production rate:

130,000 copies/hour

resulting maximum output pulse length: 1,200,000 / 130,000 = 9.2

This relation is represented by the solid line in the diagram above. The theoretical
value (dashed line) represents the case where the interval between copies becomes
equal to the length of an output pulse. Exceeding the recommended value of the
output pulse length increases the risk of missing edges due to irregular intervals
between copies. Very often the reason for missed copies is not a flaw of the sensor
but such fluctuations of the interval in combination with too long an output pulse
length.

C1:

Running direction

[RunDirection]

Input values:

0 = lead

leading

1 = trail

trailing

Function:

to define the direction in which the copies are transported.

Comments:

A front edge (i.e. an edge facing the laser beam) is detected independently of the
running direction. However, for certain false pulse suppression modes to operate
properly, the running direction must be set correctly.

The terms leading and trailing are used according to the following sketch:

Running direction of

copies

leading

trailing

Front edge

(detectable)

Tail edge

(non-detectable)

Scatec-1x