HS50_advance_level 1_20200522_221201 (1) - 第540页
Studen t Guide HS-50 A dvanced I 06/200 2 Edition 20 App endix 13 5. O bserve the machine while it c o mpletes it s r eference run. – The X- and Y - axe s find their respective zero pulses. – The C& P Heads perform s…
06/2002 Edition Student Guide HS-50 Advanced I
20 Appendix
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20.4 Assessment of machine status
20.4.1 Check list to start machine trouble shooting
The following list is designed to offer a logical method of assessing the condition of a machine to
enable troubleshooting to begin. The idea is to follow a set pattern to avoid missing basic problems
with the machine before more in depth troubleshooting begins.
1. Visual inspection of the machine.
– Check the head and gantry for freedom of movement. Take care that the Z-axes of the C&P
head are not in the down position before moving the gantry manually.
– Make sure the feeders are set correctly on the feeder tables. The feeders should be seated
firmly without sitting on any components. All feeder flaps should be properly closed.
– Inspect all Feeder tables for proper cable connections.
– Make sure the Dummy plug is properly installed.
– Ensure that no tools or materials are obstructing the path of the gantry that may cause a
head crash.
2. Turn on the machine.
– Ensure the line computer is booted up properly.
– Switch on the station.
3. Begin the preliminary walk-around of the machine.
– Check the LED’s on the ICOS vision card.
– Check the LED’s on machine controller for any fault indications.
– Check the LED’s on the power supply, (for S23 and new generation machines.)
– Check the LED’s on the axes boards for any fault indications.
– Check the LED’s on servo cage for any fault indications.
– Check the LED’s on machine head for proper communication signaling.
– Make sure the incoming Air pressure gauge indicates the proper operational pressure
range.
4. Check the Graphical User Interface (GUI) for proper operation.
– Check for the completion of the software booting sequence.
– Monitor the screen for any errors.
– Press the Start key to initiate the reference run when prompted to.
Student Guide HS-50 Advanced I 06/2002 Edition
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5. Observe the machine while it completes its reference run.
– The X- and Y- axes find their respective zero pulses.
– The C&P Heads perform successful reference runs.
– The C&P Heads perform successfull vacuum checks.
– The Revolver and IC heads perform successful height checks.
– The lifting table cycles.
6. Quick check of the machine functions using the Sitest.
– Go to Sitest functions.
– Check the transport functions. This includes the 5 conveyor sections, lifting table, and stop-
per.
– Operate the flap of the revolver head nozzle changer. Make sure it opens and closes nor-
mally.
– Check that the left and right cutter units are working.
– Check that hte C&P Head can return and pick nozzles smoothly.
– Return to main station menu.
7. Communications with line computer.
– Perform a successful transfer of a placement program from the line computer to the station.
– Observe the star head for the proper reconfiguration of nozzles from the nozzle garage if
the program requires it.
– Perform a manual configuration of nozzles if required.
– Observe the machine perform another reference run.
8. Monitor the machine during the placement of components.
– Ensure the PCB conveyor is adjusted to the correct width. Not too tight or loose for the PCB.
– Ensure the PCB stoppers are positioned approximately in the middle of the conveyor width.
– Do a placement with a reliable board and proper CAD data.
– Observe for proper pick up of components during the pick-up cycle.
– Observe that feeders are functioning properly and component reels are moving easily.
– Observe any trends in rejects due to pick-up or ID error.
– Check for PCB placement accuracy of all gantries.
06/2002 Edition Student Guide HS-50 Advanced I
20 Appendix
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20.4.2 Overview of LEDs used throughout the machine
Throughout the machine there are a number of control and monitoring PCBs that have visible
LEDs fitted that indicate the status of various objects. These LEDs are useful when first line trou-
ble shooting as a quick check on the machine status at any one time. Listed below are the various
items that have LEDs visible, together with the normal status of the LED and what it indicates.
Please refer to the machine overview section of this student guide for an indication of the location
of the items within the machine.
20.4.2.1 Axis Control Board
Counting error: red LED 20
Normally off. It lights up In the HS-50, only at the moment of error, then it is off again. This can be
used to isolate the problem to the ribbon cable or a location on the scale. The error can be caused
by: an encoder that is dirty, defective, or not adjusted properly; a dirty scale; a problem with the
feedback system from the encoder; a defective ribbon cable, axis board, or other boards involved.
General error: red LED 20
Normally off. Lights on a system hardware electronics error. Can only be cleared by cycling the
machine off then on. The board or power supply may have a problem if the error does not clear.
Zero pulse: green LED 20
Normally on when the axis is exactly at zero pulse (home) position. The LED will not be lit if the
axis is in any other position than ”home”. The zero pulse is used for the reference run. The count-
ing system of the axis card is initialized by the negative value of the zero-point correction value in
the file achs_ver.ma when the encoder has detected the reference pulse.
Initialized: green LED 20
Normally on. LED lights when its designated axis has successfully run a reference run. The sys-
tem becomes initialized the instant the zero-pulse has been found and the zero-point correction
value has been loaded into the axis card.
End signal: green LED 20
Normally on when an end signal has been received. Off again after the next start signal. The LED
remains off during movement from start to target position. An end signal occurs when the axis has
completed its travel, and is stable about it’s position, after which the LED remains on.