Baumer BA Scatec10 15 - Manual (Page 18)

User manual Scatec-10 / -15 18 / 44 Baumer Electric AG
Version 2011-03 www.baumer.com Frauenfeld, Switzerland
tape, an output pulse is generated. This mode makes it possible to reliably count
copies as long as each copy is preceded by a gap. The advantage of reacting solely
to the retro-reflective tape is, that copies may have a surface and form of any kind,
even heavily wrinkled (such as thick newspapers in a bag), without causing any
false pulses, because the sensor does not react to edges in this mode.
With the running direction leading, the pulse is issued as soon as the copy enters
the laser beam, whereas with the running direction trailing, the pulse issue occurs as
soon as the copy exits the laser beam.
With retro-reflective foil only as false pulse suppression mode, copies are counted
correctly only if every copy is preceded by a gap and if the retro-reflective foil is
mounted as beam blocker.
C4:
Dead time in % [Dead time %]
Input values: 0 to 50 in steps of 1 [18%]
Function: defines the duration of the dead time as percentage of the mean interval between
copies.
Comments: This parameter is accessible only if menu C3 dynamic dead time (C3 = 00) was
previously activated.
Note: Be careful setting this parameter to a value higher than 35%. Otherwise, fast
reduction of the conveyor speed might lead to unintentional suppression of edges.
C5:
Encoder resolution (mm/pulse) [Encodr Resol]
Input values: 0.10 to 9.99 in steps of 0.01 [1mm/step]
Function: to define the resolution of the encoder given as distance in millimeters which the
conveyor travels per encoder pulse.
Comments: This parameter is accessible only if menu C3 synchronous dead time (C3 = 01) was
previously activated.
Make sure that the frequency of the synchronization input does not exceed the
specified maximum of 50 kHz. With an encoder resolution of 0.10mm/pulse this
frequency is reached at a conveyor speed of 5m/s.
C6:
Dead Path (mm) [Dead Path mm]
Input values: 0 to 499 in steps of 1 [20mm]
Function: to define the path in millimeters which the conveyor first has to travel before the
output is set active again.
Comments: This parameter is accessible only if previously in menu C3 synchronous dead time
(C3 = 01) was activated.
C7:
Encoder A/B [Encoder A/B]
Input values: 0 = A only A-channel of the encoder is used
1 = A/B A- and B-channel of the encoder are used
(not applicable in case of a FLDM 170C…)
Function: to define the type of encoder connected to the Scatec-10 / -15 for synchronization
Comments: This parameter is accessible only if menu C3 synchronous dead time (C3 = 01) was
previously activated.
With A- and B-channel of the encoder used, Scatec will take into account the
moving direction of the conveyor and count the distance traveled by the conveyor
either positive or negative. The regular running direction of the conveyor has to be
positive. The application software ScaDiag shows if the conveyor is moving in
reverse direction.
If a Scatec-10 / -15 with C7 set on (encoder with A/B-channel) does not give out any
pulses although it detects edges (amber LED lights up), then the connections of the
A/B channels might have been mixed up. In this case the application software