45
Is there
any excess vibration
at transmission parts
like gears?
Increase or decrease
acceleration /
deceleration time
Is there any loading
variation condition?
YES
Reduce load. Increase
CCES and motor capacity
Reduce loading
variation
Improve mechanical
system
NO
YES
YES
CCES malfunction
During acceleration or
deceleration ?
NO
Is the
voltage level
between T1-T2, T2-T3, and
T3-T1 normal?
Is the
acceleration/
deceleration time setting
appropriate?
CCES malfunction
NO
NO
Not
appropriate
Appropriate
YES (The differences between different wires are within 3%)
Chapter 4:
Troubleshooting Procedures
Irregular motor operation
