1. The manual pulse generator is damaged. For a FANUC0TD CNC lathe, the hand-operated pulse generator failed, making it impossible to fine-tune the tool setting, and the faulty parts needed to be replaced or repaired. At that time, there were no suitable spare parts, so the parameter 900#3 could be set to "0" first, and the manual pulse generator was not used temporarily, and the tool fine-tuning was performed by operating the single pulse generator with the jog button instead. Set this parameter to "1" after the manual pulse generator is repaired.
2. When the machine tool returns to the reference point after starting up, an overtravel alarm occurs. When the above-mentioned machine tool returns to the reference point, 510 or 511 overtravel alarm occurs, and there are two ways to deal with it: (1) If the X-axis returns to the reference point, 510 or 511 overtravel alarm occurs, you can set the value of parameter 0700LT1X1 to After changing to +99999999 (or changing 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. (2) Press the P and CAN keys at the same time and turn on the machine to eliminate the overtravel alarm.
3. A FANUC 0i CNC lathe, ALM701 alarm appeared shortly after starting up. From the maintenance manual, it is explained that the fan on the upper part of the control part is overheated. Open the electrical cabinet of the machine tool, check that the fan motor does not operate, and check that the fan power supply is normal. It can be determined that the fan is damaged. Because the same type of fan cannot be purchased at the moment, first set the parameter RRM8901#0 Change to "1" to release the ALM701 alarm first, and then cool down with forced cold air. After the fan is purchased, change PRM8901 to "0;
4. Common maintenance parameters
4.1, 701 alarm: abnormal detection of the system fan, 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 position, and then set 1815#4 =1. If the setting is unsuccessful, please move the axis for a certain distance, return to the origin, and reset.
4.3, Full closed loop to semi-closed loop: 1815#1, set this parameter to 0, the machine tool is semi-closed loop. Then modify parameters 2084 and 2085, and reset according to the pitch of the lead screw.
4.4. Lock the SYSTEM button 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 the 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. Such failures usually occur when replacing the screw, motor or re-entering the parameters.
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 can run automatically without returning to zero, set 1005#0=1.
4.11, macro program protection:
Release macro program protection 3202#0=0 (No. 8000-8999); 3202#4=0 (No. 9000-9999);
4.12, shielded serial spindle: sometimes for maintenance, it is necessary to isolate the serial spindle, 3701#1=1
