HS50_advance_level 1_20200522_221201 (1) - 第546页

Studen t Guide HS-50 A dvanced I 06/200 2 Edition 20 App endix 19 20.4.3 Common Mach in e Pr o blem s The following prob lems are given as some of the most common problems that ca n oc cur in the day to day working wit h…

06/2002 Edition Student Guide HS-50 Advanced I

20 Appendix

20.4.2.7 Transceiver

Power: green LED 20

Normally on. LED is lit when power is applied to the transceiver.

20.4.2.8 Combined contactor / protective device

Power: green LED 20

Normally on. Lights when power is applied to the Main Power Supply.

Channel 1: 20

On when the start button is pressed, the E Stop loop is closed and software enable signal is given.

Channel 2: 20

As for channel 1.

20.4.2.9 Pneumatic tape cutter

Proximity switches: yellow LED’s 20

Normally off. Two on each cylinder. LED’s illuminate when the short stroke cylinder has traveled

to one end stop or the other.

Control valves: yellow LED’s 20

Normally off. One for each cylinder. LED’s illuminate when the valve changes states or is actuated

Student Guide HS-50 Advanced I 06/2002 Edition

20 Appendix

20.4.3 Common Machine Problems

The following problems are given as some of the most common problems that can occur in the

day to day working with the machine. Each problem is first described and then potential solutions

are offered. These are designed to offer a useful start for machine trouble shooting.

Error Message: Recovery:

Nozzle gets dirty or worn Remove and clean the nozzle in the appropriate segment or

replace the nozzle if there are any left in the changer.

Difference between open and

closed vacuum values are too

small.

Wrong nozzle on the sleeve. Repeated occurrence at the

same segments infers the need to clean the valves.

Star doesn't turn because of

valve control.

Move valves of segment concerned and press the start button

for a reference run. Clean or exchange the valve in case of an

error with a single unit.

Unable to find the fiducial or

ink spot during position rec-

ognition

Press the start button and ALT+8 to switch the display to the

camera picture for diagnosis. Possible problems: conveyor set

too wide; bad fiducials or ink spot; search field too small; bad

or damaged circuit board.

Pick-up problems (track

empty errors).

Check feeders for correct pitch, proper seating (debris under

feeder or debris on magnetic track?). If feeder is feeding prop-

erly, make sure the tape cover is properly closed, check for

parts in the feeder drive, proper movement of tape cover and

tape reel, proper tape retraction, or the correct vacuum at the

star. Turn the maintenance key and operate in single function

mode for diagnosis.

Error with the height refer-

ence run.

Nozzle is missing. Wrong nozzle. Nozzle did not lock after a

nozzle change.

X,Y axes invalid command or

deenergized.

Try the start button 2 or 3 times. Under gantry functions - >

gantry reference run.

Communication with compo-

nent table disrupted

Options - > load component table program. Power machine off

then on again. Check component table data and power cables.

If problem occurs with certain component/feeder, exchange

the feeder.

Switch on compressed air Compressed air supply pressure too low. Do not leave the ma-

chine switched on with insufficient air for more than 15 min-

utes!

Error when converting GF

data. GF data most likely cor-

rupted from the line com-

puter.

Cycle power on the line computer and all stations. Most likely

GF data defective with a newly created GF.

Printed circuit board feed er-

rors.

Check sensitivity of the sensors. Check the center sensor for

contamination.

06/2002 Edition Student Guide HS-50 Advanced I

20 Appendix

Counting error (X,Y) - axis. Grease or debris on encoder scale. Clean with alcohol.

Star does not turn because of

valve control.

A valve is sticky or not correctly inserted.

Segment leaky. Clean or exchange valves. Clean valve socket with an alcohol

soaked foam swab. Change nozzle and sleeve. Otherwise:

have maintenance remove the front half of the head and clean

the vacuum system.

Machine gets mixed up with

nozzle configuration in the

nozzle changer or on the

head.

The best here is to go into single functions and select "reject

all nozzles". Afterwards all magazines of the nozzle changer

are correctly filled up with nozzles. Then the refilling of the noz-

zle magazines has to be confirmed on the station computer.

Now the machine is ready again.

All placement positions have

the same offsets.

Problem: The offset between RV -and PCB-camera of gantry

1 is incorrect. Gantry 1 measures the position of the PCB!

Solution: Recalibrate PCB and RV-camera of gantry 1 and

also calibrate the segment offsets. Afterwards calibrate the

machine zero-point for x/y-axes for both gantries.

Gantry 2 has always the

same offsets.

Problem: Gantry 4/1 or 2/3 or both are not correctly calibrated

on the x/y-calibration point (wrong zero-point-correction value

for the x/y-axes).

Solution: Recalibrate the machine zero point for the x/y-axes

for both gantries.

Problem: The offset between RV and PCB camera of gantry

1/3 is wrong.

Solution: Recalibrate PCB and RV-camera of gantry 1/3 and

also calibrate the segment offsets. Afterwards calibrate the

machine zero-point for x/y-axes for both gantries.

Problem: the zero-pulse of the x or y-axis is not detected

clearly. It is measured in slightly different positions. The prob-

lem can be at gantry 4/1 or 2/3. The problem is always tempo-

rary until the next reference run for the x/y-axes!!! After the

reference run, the offset is different to the previous offset.

Solution: Check the zero-pulse signal of either x or y-axis.

The problem can be a dirty or damaged encoder system. In

case of damage the encoder scale or encoder reading head

has to be replaced. The signal can be improved to some extent

by adjusting the Problem.

Error Message: Recovery: