
B–63325EN/03
7.TROUBLESHOOTING
371
(5)If the only failure is in cutting feed (except for G00)
a. The maximum cutting feedrate parameter is likely to have been set
incorrectly.
1422 Individual–axis maximum cutting feedrate
The cutting feedrate (except for G00) is clamped at this maximum
feedrate.
b. If the feedrate is specified as a feed per revolution (mm/rev)
1 The position coder is not rotating.
Check the linkage between the spindle and position coder.
Probable causes are:
D Broken timing belt
D Missing key
D Loose link
D Loose signal cable connector
2 Defective position coder
c. If thread cutting does not work
1 The position coder is not rotating
Check the linkage between the spindle and position coder.
Probable causes are:
D Broken timing belt
D Missing key
D Loose linkage
D Loose signal cable connector
2 Defective position coder
If the machine uses a serial spindle servo, the position coder is
connected to the spindle amplifier. If it uses an analog–interface
amplifier, the position coder is connected to the CNC.
For details, see the following connection diagram.