Mitsubishi Electric C70 Setup Manual page 472

Y02 SV commu er: Commu error 0051 0005
Details
A communication error has occurred between controller and drive unit.
Non-specified communication errors occurred in four consecutive communication cycles.
Remedy
- Check for any failure of the communication cable connectors.
- Check for any failure of the communication cables.
- Take measures against noise.
(Note 1) When two or more "Y02 System alarms 0051" alarms occur at the same time, only the alarm
which occurs first is displayed. Therefore, the display precedence will be as follows: 0006, 0x04,
0005, 0x20, then 0x03.
(Note 2) Station No. always shows "0" in the alarm details, because C70 has only one communication
channel.
(Note 3) If the error is not cleared with the measures above, the drive unit may have a fault. Take a
note of the 7-segment LED contents of each drive unit and contact service center.
Y02 Servo communication error : Connect error 0051 0006
Details
A communication error has occurred between CNC and drive unit.
CRC errors, overrun errors or short frame errors occurred in four consecutive communication cycles.
Otherwise, 250 bytes of "0"/"1" data was received.
Remedy
- Confirm that the rotary switch setting on the drive unit connected with CNC does not duplicate with
any other.
- Confirm that the number of axes does not exceed the number designated by CNC.
- Check for any failure of the communication cable connectors.
- Check for any failure of the communication cables.
- Take measures against noise.
(Note 1) When two or more "Y02 System alarms 0051" alarms occur at the same time, only the alarm
which occurs first is displayed. Therefore, the display precedence will be as follows: 0006, 0x04,
0005, 0x20, then 0x03.
(Note 2) Station No. always shows "0" in the alarm details, because C70 has only one communication
channel.
(Note 3) If the error is not cleared with the measures above, the drive unit may have a fault. Take a
note of the 7-segment LED contents of each drive unit and contact service center.
Y02 Control axis No. error: Connection error 0051 0x07
Details
A communication error has occurred between CNC and drive unit.
x: Drive unit rotary switch No. (0 or later)
Remedy
- Take measures against noise.
- Check for any failure of the communication cable connectors.
- Check for any failure of the communication cables.
- The drive unit may have a fault. Take a note of the 7-segment LED contents of each drive unit and
contact service center.
- Update the drive unit software version.
(Note 1) When two or more "Y02 System alarms 0051" alarms occur at the same time, only the alarm
which occurs first is displayed. Therefore, the display precedence will be as follows: 0006, 0x04,
0005, 0x20, then 0x03.
(Note 2) Station No. always shows "0" in the alarm details, because C70 has only one communication
channel.
(Note 3) If the error is not cleared with the measures above, the drive unit may have a fault. Take a
note of the 7-segment LED contents of each drive unit and contact service center.
C70 Setup Manual
Appendix 2.4 MCP Alarms (Y)
455