LA 404 Pattern Control System
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Part 1037527
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Nordson Corporation
Manual 66-LA404-MA-01
Channel Compensation
Entering channel compensation settings ensures accurate placement of the
beads in applications where the line speed varies. Manual entry of the time
required for each gun to open, and the time required for each gun to close
provides channel compensation. Different values of compensation for each
channel can be entered.
Compensation can be entered either in milliseconds (ms) or millimeters
(mm), refer to
System Settings 1
.
Millisecond
(ms) Compensation Setting
If gun compensation is known, enter the time for each gun to open and
dispense adhesive (pull-in compensation), and the time for each gun to
close and stop dispensing adhesive (drop-out compensation). Typical
values for pull-in and drop-out are as follows:
$
liquid adhesive electric guns: 2 – 8 ms
$
high-performance air-operated guns (such as Nordson H400
Series guns): 5 – 12 ms
$
standard air-operated guns: 8 – 20 ms
Millimeter (mm) Compensation Setting
If gun compensation is not known, the pattern controller provides a method
to quickly determine these times and enter them. Set the pull-in and
drop-out compensation to zero, produce a
Normal
bead test pattern at run
speed. Enter the run speed under set speed, measure the difference
between the actual bead placement and the programmed bead start. Enter
this value for pull-in settings, and measure the difference between the actual
bead stop position and the programmed bead end and enter this value for
drop-out settings.
Summary of Contents for LA 404
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