Operating Principles
Edge Maxx
5-24
Spread Phase
This phase begins when the spread clamps take
the flatwork piece from the transfer clamps.
A signal from PX28 indicates the
transfer assembly has reached the center
position. The I/O control panel de-
energizes INV3, MTR8 and MTR10.
The I/O control panel energizes SV16
and SV16R, causing the spread clamps
to close and grip the flatwork.
At the same time, SV14 and SV15
are de-energized to open the transfer
clamps.
Now SVO signals the servo to energize
the servomotor 3 (upper spreader),
causing the spread clamps to move
toward their respective endframes.
As the piece spreads, the taut sensors
(PE50A/B) briefly detect the corner/
edges of the item. At this point, both
sensors must see the piece at the same
time; otherwise, an error condition is
assumed and the piece is dropped.
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In addition, the I/O control panel
board must receive a signal from SVO,
indicating that the upper spreader belt
is in motion. If it fails to receive the
signal, an error condition is assumed.
The machine stops and displays the
appropriate error message in the CHI
Panel.
As the piece spreads, the I/O control
panel board uses the size data calculated
during the Input Phase and the setting
of the SPREAD SLOW BUFFER to
determine when to slow the spread
speed.
As the piece spreads, its top edge rises
until it is detected by the taut sensors,
which causes the machine to slow the
spread process to its slowest speed.
When the I/O control panel stops
receiving a signal from the servo via
SVO, it indicates that the piece has been
fully spread and the servomotor has
stopped.
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TOC
INDEX
Содержание Edge MAXX
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