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Chapter: 2
Section:
MACHINE AND POWER CONNECTION
18
2.10 TROUBLESHOOTING
Before contacting the service dept. of FAGOR AUTOMATION, it is recommended to do
some troubleshooting in order to ease the finding of the defective component.
This troubleshooting operation will be carried out when:
*
Any of the axes does not count or it does it erroneously.
*
Any of the axes cannot be homed.
In these cases, the problem may be caused by the DRO or by the feedback device
corresponding to that axis.
A quick check would be to swap the feedback connector of the erroneous counting axis
“X1”, “X2”, “X3” or “X4” with that of another axis that counts correctly.
Since by doing this, the displays of those axes are also swapped, it might be necessary to
change their installation parameters to match their respective resolution, measuring units,
etc.
Next, check the DRO system again for proper count. The following situations may occur:
a)
The problem is now observed in the display window corresponding to the other axis
(which counted right before).
This means that the feedback device (linear scale, reader head, rotary encoder, cable,
etc) is the cause of the problem.
Check that the connector connections are properly done.
b)
The problem is still observed in the same display window as before.
This means that the DRO itself is the cause of the problem.
Check the A.C. voltage and that the ground connection is done properly and that the
outside DRO fuse is in good shape.
If after these checks the problem persists, call a representative of the service department of
FAGOR AUTOMATION or, in his/her absence, the service dept. itself giving them the
DRO and feedback device model and serial numbers available on the rear panel of the DRO
and on the side of the feedback device.
Note:
The DRO offers a leadscrew error compensation table for each axis.
These tables are used when the reading on a particular axis does not match its real
position due to mechanical looseness or misalignment of the feedback devices.
TROUBLESHOOTING
Содержание VNP400
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