Appendix 2.1 Operation Errors (M) - Mitsubishi Electric C70 Setup Manual

MITSUBISHI CNC
Appendix 2 Explanation of Alarms

Appendix 2.1 Operation Errors (M)

(Note) "M01" alarms are displayed as "M01 Operation error" with the error number. Error number is four digit number
displayed after error name (such as 0001). "M01" alarms are listed in ascending order in this manual.
M01 Dog overrun 0001
Details
When returning to the reference position, the near-point detection limit switch did not stop over the
dog, but overran the dog.
Remedy
- Increase the length of the near-point dog.
- Reduce the reference position return speed.
M01 Some ax does not pass Z phase 0002
Details
One of the axes did not pass the Z-phase during the initial reference position return after the power
was turned ON.
Remedy
- Move the detector one rotation or more in the opposite direction of the reference position, and repeat
reference position return.
M01 R-pnt direction illegal 0003
Details
When manually returning to the reference position, the return direction differs from the axis movement
direction selected with the AXIS SELECTION key.
Remedy
- The selection of the AXIS SELECTION key's +/- direction is incorrect. The error is canceled by
feeding the axis in the correct direction.
M01 External interlock axis exists 0004
Details
The external interlock function has activated (the input signal is "OFF") and one of the axes has
entered the interlock state.
Remedy
- As the interlock function has activated, release it before resuming operation.
- Correct the sequence on the machine side.
- Check for any broken wires in the "interlock" signal line.
M01 Internal interlock axis exists 0005
Details
The internal interlock state has been entered.
- The absolute position detector axis has been removed.
- A command for the manual/automatic simultaneous valid axis was issued from the automatic mode.
- The manual speed command was issued while the "tool length measurement 1" signal is ON.
- In NC/PLC axes switch function, the manual feed was commanded from NC during PLC axis control.
Remedy
- The servo OFF function is valid, so release it first.
- An axis that can be removed has been issued, so perform the correct operations.
- The command is issued in the same direction as the direction where manual skip turned ON, so
perform the correct operations.
- During the manual/automatic simultaneous mode, the axis commanded in the automatic mode
became the manual operation axis. Turn OFF the "manual/automatic valid" signal for the
commanded axis.
- Turn ON the power again, and perform absolute position initialization.
- Turn OFF the "tool length measurement 1" signal to start the program by the manual speed
command.
- In NC/PLC axes switch function, switch to NC axis control and then command the manual feed from
NC.
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