1. The hand pulse generator is damaged
A FANUC0iTF CNC lathe, the hand pulse generator fails, so that the tool cannot be fine-tuned, and the faulty parts need to be replaced or repaired. At that time, there is no suitable spare part. You can set parameter 900#3 to “0” first, temporarily leave the manual pulse generator unused, and use the jog button single pulse generator to perform fine-tuning of the tool. Set this parameter to "1" after the hand pulse generator is repaired.
2. When the machine is turned on
Over-travel alarm occurs when returning to the reference point
When the above machine tool is returning to the reference point, the 510 or 511 overtravel alarm occurs. There are two processing methods: A. If the 510 or 511 overtravel alarm occurs during the X axis returning to the reference point, you can change the value of parameter 0700LT1X1 After it is +99999999 (or modify the value of 0704LT1X2 to -99999999), return to the reference point again. If there is no problem, change the value of parameter 0700 or 0704 to the original value. B. Press the P and CAN keys at the same time and turn on the machine to eliminate the overtravel alarm.
3. A FANUC Oi CNC lathe has an ALM701 alarm shortly after it is turned on
The maintenance manual explains that the fan in the upper part of the control unit is overheated. Open the electrical cabinet of the machine tool, check that the fan motor does not work, and check that the fan power supply is normal. It can be determined that the fan is damaged.
Because the fan of the same type cannot be purchased for a while, change the parameter RRM8901#0 to "1" to release the ALM701 alarm first, and then cool by the strong cooling air. After the fan is purchased, change the PRM8901 to "0."
4. Common maintenance parameters
4.1, 701 alarm: system fan detection is abnormal, set 8109#0=1 to shield this alarm.
4.2. Set the absolute position encoder: 1815#4 and 1815#5. When the machine tool is to be set as an absolute position encoder, set 1815#5=1, then move the axis to the 0 o’clock position, and then set 1815#4 =1. If the setting is unsuccessful, please move the axis a certain distance, then return to the origin and reset.
4.3. Change from full closed loop to semi-closed loop: 1815#1, set this parameter to 0, the machine tool is semi-closed loop. Then modify the parameters 2084 and 2085, and reset them according to the screw pitch.
4.4. Lock the SYSTEM key of the machine tool: In the SETTING setting screen, set parameter 3208#1=1.
4.5. Soft overtravel alarm: the alarm number is 500 or 501, set parameter 1320 or 1321 to 9999999 and -99999999, after removing the alarm, return the machine tool to the origin, and then input the original parameter value. This type of failure usually occurs when the lead screw, the motor is replaced or the parameters are re-entered.
4.6. Machine tool interlock signal: Refer to the description of parameter 3003 to determine the reason why the machine tool is locked and unable to move.
4.7. Chinese display: 3102#3=1.
4.8. Servo adjustment screen display: 3111#0=1; spindle monitoring screen: 3111#1=1; operator monitoring: 3111#5.
4.9. Spindle positioning: 4077. Used to adjust the spindle tool change position.
4.10. Operation without returning to zero: If the machine tool does not return to zero, it can run in automatic mode, set 1005#0=1.
4.11. Macro program protection: release the macro program protection 3202#0=0 (8000-8999); 3202#4=0 (9000-9999).
4.12. Shielded serial spindle: Sometimes it is necessary to isolate the serial spindle for maintenance, 3701#1=1.
