Mitsubishi Electric 800 Series Instruction Manual page 83

Checkpoint
The specifications and rating match the
system requirements.
Countermeasures are taken against
electrical corrosion on the motor bearing.
*1 Recommended common mode choke: FT-3KM F series FINEMET
is a registered trademark of Hitachi Metals, Ltd.
82
3. PRECAUTIONS FOR USE OF THE INVERTER
3.6 Checklist before starting operation
Countermeasure
Make sure that the specifications and rating match the system
requirements.
When a motor is driven by the inverter, axial voltage is generated on the
motor shaft, which may cause electrical corrosion of the bearing in rare
cases depending on the wiring, load, operating conditions of the motor or
specific inverter settings (high carrier frequency). Contact your sales
representative to take appropriate countermeasures for the motor. The
following shows examples of countermeasures for the inverter.
• Decrease the carrier frequency.
• Provide a common mode choke
®
*1
on the output side of the inverter.
common mode choke cores manufactured by Hitachi Metals, Ltd. FINEMET
Refer to Check
page by user
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