46
XYZ Machine Tools Ltd
XYZ Bed Mill Safety, Installation, Maintenance, Service & Parts List Manual
Pendant locks up
Press the E-stop button and see if lock up clears.
If not, then do the following:
Turn the pendant off, wait at least 30 seconds,
and turn it back on and check to see if the
malfunction has been reset.
No voltage to RSG port
RSG will not work – should be 5 DC volts present
across pins 1 and 4. Check with a voltmeter.
Flash disk failure
If the flash disk fails, the system will not boot up
or operate. It will need to be replaced. Contact
Service. All programs and machine configurations
will be lost. Make sure to back up your flash disk
from time to time.
Floppy disk failure
Will not allow user to save or pull up programs
from a floppy disk. Can the floppy drive format a
disk? See Section 4.3.1.
No display
Faulty display or computer, please contact service.
Faulty Emergency Stop (E-stop) switch
It can be stuck open or closed (pressed). If it is
stuck closed the pendant will need to be replaced
because the user will have no way to get rid of
the error message. If it is open it will allow the
machine to operate but it will be unsafe. The
pendant MUST BE REPLACED.
Overlay failure (keys on pendant)
Certain buttons on overlay do not work. Do code
81 to verify each key beeps.
Low voltage to pendant or current spikes
1 amp fuse in pendant blows. Pendant will not
turn on.
4.3.1
Checking Floppy Drive by Formatting a Disk
1.
Find a new disk and install in floppy drive.
2.
Connect keyboard to pendant.
3.
Press CTRL ESC to get to start menu.
4.
Press R for run.
5.
Type Format A: - press enter.
6.
If the format works your disk drive is working. If format does not work, reboot control and see if
it now works. If it does not work replace the pendant.
7.
Press ALT ESC to get back to PT4 software.
4.4
Motor Diagnostics
The Motor subsystem is comprised of 2 parts: The Motor Encoder and the Motor. The motors are
powered by 110 VAC voltage. The servo driver is also an integral part of the servo system, which is
discussed in detail in the next section.
WARNING!
Do not work with the motors unless the power is disconnected from the machine. The
motors are run by 110 VAC. There is possibility of death by electrocution!
Rarely do both the X and Y motor/servo systems fail at the same time and in the same way. So, if your
problem is occurring on both axes, its source is probably somewhere else.
The motors on the X, Y and Z axis are identical.
4.4.1
Cable Connections
Check the motor cable connections on the cable breakout box. Verify there are no pushed in pins on the
connector.
