15-B Maintenance Mnl, GFZ-62075E/03 - Automation Service Srl
15-B Maintenance Mnl, GFZ-62075E/03 - Automation Service Srl
15-B Maintenance Mnl, GFZ-62075E/03 - Automation Service Srl
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3. TROUBLESHOOTING AND ACTION TO BE TAKEN<br />
B–<strong>62075E</strong>/<strong>03</strong><br />
3.2.5 The machine cannot be operated by the manual pulse generator.<br />
Item<br />
Possible cause of the<br />
problem<br />
How to check the cause<br />
Check whether the position display<br />
changes when the display lock (DLK) is<br />
off.<br />
1 Failure analysis 1. The position display changes but<br />
the machine cannot be moved.<br />
2. Neither the position display changes<br />
nor can the machine be moved.<br />
2<br />
The machine lock (MLK)<br />
is on.<br />
Check the DGN data.<br />
3 The servo off signal is on.<br />
Check the DGN data.<br />
Check parameter No. 1802.<br />
4<br />
5<br />
6<br />
7<br />
8<br />
9<br />
10<br />
11<br />
Malfunction in the servo<br />
system<br />
The interlock signal is on.<br />
The JOG override is 0%.<br />
The mode signal is not input.<br />
The feed axis selection<br />
signal is not input.<br />
External reset (ERS) is on.<br />
Reset and rewind (RRW)<br />
is on.<br />
Reference position return<br />
(ZRN) is on.<br />
The manual pulse generator<br />
is defective.<br />
The cables are defective.<br />
Correct options are not<br />
added.<br />
Refer to the “FANUC AC Servo Unit<br />
<strong>Maintenance</strong> Manual.”<br />
Check the DGN data.<br />
(parameter No. 1000).<br />
Check that HND or J + H is displayed for<br />
the status.<br />
Check the DGN data to see if the feed<br />
axis selection signal is input.<br />
Check that RSET is displayed for the<br />
status.<br />
Check that REF is displayed for the status.<br />
Check the options with the data sheet.<br />
See Item 2.<br />
See Item 5.<br />
Action to take<br />
3.2.6 The spindle cannot be operated in the synchronous feed mode.<br />
Item<br />
Possible cause of the<br />
problem<br />
1 Incorrect cable connection<br />
2<br />
3<br />
4<br />
The spindle speed is incorrect.<br />
The position coder is defective.<br />
The main CPU board is<br />
defective.<br />
How to check the cause<br />
Check the connection between the NC<br />
unit and the position coder.<br />
Check the spindle speed on the screen.<br />
Check the DGN data.<br />
(parameter No. 1000).<br />
Action to take<br />
Replace the position coder.<br />
Replace the main CPU<br />
board.<br />
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