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TECHNIC AL RE FERENCE DRIVE S AND SEN SOR S 1.30 ProFlow Manual Chapter Issue 8 Dec 02 Figure 1-22 Cassette Low Sensor Locatio n 15 0 30 Pressure Mechanism (cover removed) Sensor Unit Piston Crosshead Piston Crosshead Gr…
TECHNICAL REFERENCE
DRIVES AND SENSORS
Chapter Issue 8 Dec 02 ProFlow Manual 1.29
Sensors
GSX and Lt Machines
Name Type Test Point Functional Description
Cassette Low Reed Switch Y3 X3 PCADADIO Detects when the transfer head is low on paste/empty
Squeegee
Front Home
Hall Effect Y1 X4 Pin b24 Detects when the ProFlow downstop has moved into
the home position
Squeegee
Rear Home
Hall Effect Y1 X4 Pin c26 Detects when the ProFlow unit has moved into the
home position
Infinity Machines
Name Type Test Point Functional Description
Cassette Low Reed Switch MultiMove X12 IN6 Detects when the transfer head is low on paste/empty
Squeegee
Front Home
Hall Effect Stepper Multiplexer Detects when the downstop has moved into the home
position
Squeegee
Rear Home
Hall Effect Stepper Multiplexer Detects when the ProFlow unit has moved into the
home position
Fixed Head Machines
Name Type Test Point Functional Description
Cassette Low Reed Switch MultiMove X12 IN6 Detects when the transfer head is low on paste/empty
ProFlow Home Microswitch Stepper Multiplexer Detects when the ProFlow unit has moved into the
home position
TECHNICAL REFERENCE
DRIVES AND SENSORS
1.30 ProFlow Manual Chapter Issue 8 Dec 02
Figure 1-22 Cassette Low Sensor Location
15
0
30
Pressure Mechanism (cover removed)
Sensor Unit
Piston Crosshead
Piston Crosshead
Graduated Marker
Actuator
Reed Sensor
TECHNICAL REFERENCE
DRIVES AND SENSORS
Chapter Issue 8 Dec 02 ProFlow Manual 1.31
Cassette Low
Sensor
When the paste reservoir becomes low or empty of print material, the sensor
operates giving a warning window on the machine monitor and the indication of
the tricoloured beacon is changed.
NOTE
Selecting Warn, Pause or Suspend in Set Preferences (Consumable Action)
affects the machine reaction to a Cassette Low indication. Refer to the Set
Preferences and Consumable Replenishments chapters of the machine manual
for more details.
The cassette low sensor reed switch is secured to the left pneumatic actuator
on the ProFlow pressure mechanism, (Cassette Low Sensor Location refers).
The pneumatic actuator pistons move slowly down as the print medium inside
the transfer head is used up. The sensor reed switch is enabled when the
magnetized piston diaphragm comes into close proximity with it, (Reed Switch
and Circuit Schematic figure below refers).
The input for the cassette low sensor floats high until the reed switch is enabled,
once made the input is pulled down to 0v. This information is fed to the
PCADADIO card within Y3 enclosure for GSX and Lt machines and the Multi-
Move X12 card (IN6) of the machine controller for Infinity and fixed head
machines.
NOTE
The cassette low sensor is height adjustable so that print material wastage can
be reduced to a minimum. For further information refer to the Adjustments and
Settings section of this chapter.
Figure 1-23 Reed Switch and Circuit Schematic
Reed Switch and Circuit Schematic
Digital Input
to MultiMove x12
V+ (User)
Opto-isolator
(Red)
(Black)
2K
0V
12V
0V
N0
(normally open)
Reed Switch
Piston Diaphragm
(magnetized)
Piston Crosshead
Pressure
Actuator
(cutaway view)
Direction of
Piston
Movement