Mitsubishi Electric C70 Setup Manual page 570

The Flow when the "Y02 SYSTEM ALARM 0051 xy20" occurs.
Y02 0051 xy20
The spindle drive's
rotary switch number +1
and the last two digits of
"#1021 mcp_no" are
matched?
no
The servo drive's
rotary switch number +1
and the last two digits of
"#3031 smcp_no" are
matched?
no
Does noise occur?
no
Contact your Service Center.
(Note) Examples of measures.
- Check the grounding wire.
- Separate the heavy electrical cable and light electrical cable
- Add a ferrite core
yes
yes
Set the servo drive unit's rotary switch
so that it corresponds to "#1021smcp_no".
Turn the drive unit and NC
power ON again.
no
yes
Take measures against noise.
(Note)
Turn the drive unit and NC
power ON again.
Is the error removed?
no
yes
Appendix 2.16 Troubleshooting
Set the spindle drive unit's
rotary switch so that it corresponds
to "#3031 smcp_no".
Turn the drive unit power and
NC power ON again.
Is the error removed?
no
Is the error removed?
yes
C70 Setup Manual
yes
Completed
553