Vista Rail System Module.pdf - 第13页
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12.12 Technical Reference Manual Chapter Issue 1 Sep 02
NOTE
Rail width home sensor checks are also required if rail parallelism adjustments
are carried out
Figure 12-9 Rail Width board Sensor Location
Home Sensor Screw Adjustment Set Rail Dimension
1 full turn clockwise + 0.5mm
1 full turn anti-clockwise - 0.5mm
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Chapter Issue 1 Sep 02 Technical Reference Manual 12.13
Board at Left/Right
Optos
When fitted to the machine rails the diffuse sensors switching threshold can be
adjusted by means of a sensitivity control switch. This ensures that when a
board is fed into the machine (via the transport belts) the sensor output switches
to ON.
To achieve an optimum setting carry out the following procedure:
1. Place a board on the rails covering the sensor.
2. Turn the sensitivity control fully anti-clockwise, ensure that the green LED is
extinguished.
3. Re-adjust the sensitivity control clockwise until the green LED illuminates.
4. Remove the board from the rails and confirm that the green LED extin-
guishes and the red LED illuminates.
5. Position the board back onto the rail system, (so that the board lies on top
of the rail system as shown in the figure below). Confirm that the red and
green LED’s are extinguished. (If the green LED illuminates, turn the
sensitivity control anti-clockwise until the green LED extinguishes.)
6. Remove the board. Position the board back on the rail system, as in Step 1,
and confirm that the green LED illuminates. Carry out Step 4.
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12.14 Technical Reference Manual Chapter Issue 1 Sep 02
Front Rail Parallelism
WARNING
BOARD CLAMPS. EXTREME CARE MUST BE EXERCISED WHEN WORKING IN
THE TOOLING AREA OF THE MACHINE TO AVOID INJURY. THE FOILS ON THE
FRONT AND REAR BOARD CLAMPS ARE VERY SHARP.
NOTE
Ensure Camera X Axis Parallelism (Camera and Vision Systems Module
Chapter refers) has been carried out prior to commencing this procedure.
1. In Camera Diagnostics, home the Camera X and Y axes. Select Drive to
Board Stop Position the camera carriage is driven to the rear of the front
rail.
2. Raise the front printhead cover.
3. Power down the machine.
4. Carry out either of the following:
a. Remove the camera (refer to Camera and Vision Systems Module Chap-
ter, Camera and Optical Unit Assembly Removal).
b. If available fit a spare camera assembly bearing to the right hand end of
the camera rail.
5. Fit a Dial Test Indicator (D.T.I.) to the camera carriage bearing.
6. Using the D.T.I. check the front rail parallelism to camera carriage rail over
the length of the ’O’ ring support plate to ±0.2mm.