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TECH NICAL RE FERE NCE DRIVES & SE NSOR S 1.16 High Throughput Conveyor Manual Chapter Issue 2 May 02 Rail Lif ted Sensors The lef t and right rai l lif ted sensors are background suppr ession diff use type opto sens…
TECHNICAL REFERENCE
DRIVES & SENSORS
Chapter Issue 2 May 02 High Throughput Conveyor Manual 1.15
DRIVES & SENSORS
Sensors
Motors
Name Type Inputs Functional Description
Rail Lifted Left Through Beam Opto NextMove
Dig IN 3
Detects premature lifting of rail
Rail Lifted Right Through Beam Opto NextMove
Dig IN 4
Detects premature lifting of rail
Rail Home Through Beam Opto Stepper
Multiplexer
MUX2
Provides home position of moving rail thus
providing accurate board width settings
Board at Left Background Suppressed NextMove
Dig IN 16
Detects left side incoming/outgoing board
dependent upon machine pass through configuration
Board at Right Background Suppressed NextMove
Dig IN 17
Detects right side incoming/outgoing board
dependent upon machine pass through configuration
Left Auxiliary Rail Diffuse Opto M27PLC01-I/P1 Detects left side incoming/outgoing board
dependent upon machine pass through configuration
Right Auxiliary Rail Diffuse Opto M27PLC02-I/P1 Detects right side incoming/outgoing board
dependent upon machine pass through configuration
Name Type Functional Description
Moving Rail Drive Stepper Motor Moves the rear moving rail of the print station
conveyor in the Y direction
Front
Print Area Conveyor
Board Transport Belt Drive
DC Moving Coil Motor Turns the front transport belt, of the print station conveyor in the
clockwise or anti clockwise direction (dependent upon upline/
downline feed direction)
Rear
Print Area Conveyor
Board Transport Belt Drive
DC Moving Coil Motor Turns the rear transport belt, of the print station conveyor in the
clockwise or anti clockwise direction (dependent upon upline/
downline feed direction)
Front Left
Auxiliary Conveyor
Board Transport Belt Drive
DC Moving Coil Motor Turns the front transport belt, of the left auxiliary conveyor in the
clockwise or anti clockwise direction (dependent upon upline/
downline feed direction)
Rear Left
Auxiliary Conveyor
Board Transport Belt Drive
DC Moving Coil Motor Turns the rear transport belt, of the left auxiliary conveyor in the
clockwise or anti clockwise direction (dependent upon upline/
downline feed direction)
Front Right
Auxiliary Conveyor
Board Transport Belt Drive
DC Moving Coil Motor Turns the front transport belt, of the right auxiliary conveyor in the
clockwise or anti clockwise direction (dependent upon upline/
downline feed direction)
Rear Right
Auxiliary Conveyor
Board Transport Belt Drive
DC Moving Coil Motor Turns the rear transport belt, of the right auxiliary conveyor in the
clockwise or anti clockwise direction (dependent upon upline/
downline feed direction)
TECHNICAL REFERENCE
DRIVES & SENSORS
1.16 High Throughput Conveyor Manual Chapter Issue 2 May 02
Rail Lifted Sensors The left and right rail lifted sensors are background suppression diffuse type
opto sensors.
These sensors are fitted to the bottom of the left and right moving rail support
arms of the print station rail. The sensor vanes are fitted to the entire length of
the rail stop bars. These sensors feed directly into NextMove card of the
machine PC.
The purpose of the rail lifted sensors is to detect premature lifting of the rail as
the rising table rises. This may occur if tooling or any other object was placed
under the rear rail. They are checked:
1. Immediately after the rail has moved to its new board width following product
file change.
2. When Run is pressed, before the camera moves to board stop position.
3. After printing to check that the rail is fully down before the next print cycle
can commence.
4. When the table moves to rail lift check height before moving to vision height.
Figure 1-12 Rail Lifted Sensor Location
Rail Stop Bar
(Clatter Bar)
Opto Vane
Rail Lifted Left
Opto
Left Rail
Transport Leg
Shock Absorber
Enlarged View of Left Rail Opto
View on Front of Machine
TECHNICAL REFERENCE
DRIVES & SENSORS
Chapter Issue 2 May 02 High Throughput Conveyor Manual 1.17
Rail Home Sensor The rail home sensor is a through beam opto type sensor.
The rail home sensor feeds directly to the Multiplexer controller and is used to
set the datum position for the moving rear rail. From this datum position, the
moving rail stepper motor moves the rear rail the amount of steps needed to
obtain the rail width set in the current board file. During machine initialization,
(power-up or upon exiting diagnostics), the rear rail moves to the rear of the
machine until the rail opto vane enters the rail home sensor, the motor is driven
in the opposite direction until the vane clears the home sensor and the motor
stops, the rear rail is now at the home position.
NOTE
Homing Sequence of this chapter refers.
Figure 1-13 Rail Home Sensor Location
Rail Home
Sensor
Rail Home
Opto Flag
(home vane)
View on Right Hand Side of Machine