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CDA PC44 Instruções de Operação Página 14

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2-2 Equipment Familiarization
2. PC40 Functional Description
P
IN
1083
89A
57-
28
1
/9
3
NOTE: The PC40 240 VAC Pattern Control is designed for use only in
geographic regions where
240 VAC with a grounded neutral is the
indust
ri
al standard.
If
120 VAC with a grounded neutral is the industrial
standard at your si
te
, consider using either the PC40 AC Pattern
Control (P/N 131 712),
or
the PC40
DC
Pattern Control
(P
/N
131
709)
and PS40
DC
Power Supply (P/N
131
739).
NOTE: The PC40 240 VAC Pattern Control uses 220/
240
VAC
solenoids to actuate pneumatic guns. The unit should
not
be used to
actuate electric gun .drivers.
If you are using electric gun drivers, order
the
PC40
DC
Pattern Control (P/N
131
709) and PS40 DC Power
Supply (PIN
131
739).
This section covers
the
following topics:
• A functional description of
the
PC40
•
A description of the PC40 user interface
• A description
of
the four Nordson photoelectric sensors
• A description
of
the PC40 remote communication capabilities
The
PC40 controls the deposit
of
material on a moving surface
(substrat
e)
. Figure 2.2 provides a block diagram that illustrates the
process involved.
1. A t
ri
gger
dev
ice
(e
.g., a photoelectric sensor) senses the approach
of
the leading
or
trailing edge
of
the substrate. The trigger then sends
an
electrical signal
to
the PC40.
2. The PC40's ASIC (Application Specific Integrated Circui
t)
executes
the timing sequences.
3. The
PC40 activates one to four output channels by sending an
electrical signal to one
or
more gun solenoids.
4. Air moves through the solenoid and into the extrusion gun. This lifts a
piston in the gun whi
ch
allows hydraulically-fed material
to
flow out
of
the gun onto the substrate.
5. When the user-defined pattern is completed, the
PC40 stops sending
an open signal to the channel(s). The solenoid
closes, airflow to the
gun piston ceases, air in the gun is released through the solenoid
exhaust, the gun piston closes, and material stops flowing to the
substrate.
c
No
rdson
CorporalJO
n 1993
All R•ghts Reserved
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