
B–62075E/04
5. TROUBLESHOOTING
293
#7
1402
#6 #5 #4 #3 #2 #1 #0
ROV8
[Parameter input]
[Data type] Bit type
ROV8 Rapid traverse override is specified as:
0 : Fo, Fm, 50%, or 100%, using two input signals, ROV1 and ROV2.
1 : 0 to 100% (in steps of 1%), using seven input signals, *RV0B to
*RV6B.
(5)Only feed (other than G00) does not function
(a) Maximum feed rate set by parameter is incorrect.
1422 Maximum feedrate [mm/min]
Feed rate is clamped at this upper feed rate.
(b)Feed rate is specified by feed per revolution (mm/rev)
(i) Position coder does not rotate
Check the connection between spindle and position coder
The following failure is considered:
⋅ T iming belt is broken
⋅ Key is removed
⋅ Coupling is loose
⋅ Connector of signal cable is loosened
(ii) Position coder is faulty
(c) Thread cutting does not operate
(i) Position coder does not rotate
Check the connection between spindle and position coder
The following failure is considered:
⋅ Timing belt is broken
⋅ Key is removed
⋅ Coupling is loose
⋅ Connector of signal cable is loosened
(ii) Position coder is faulty
Position coder is connected to the spindle amplifier when
serial interface spindle is used or connected to the CNC when
analog interface spindle is used.
For details of connection, refer to the following.
<T series>
Whether A/B phase signals from the position coder are read
correctly, can be judged also by the spindle speed display on
the CRT screen (position screen). (However, it is not
displayed when PARAM 3105#2=0).