Storage Guidelines - YASKAWA Varispeed G7 Series Instruction Manual

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Storage Guidelines

The drive contains electrolytic capacitors and fine electronic parts that undergo chemical changes. Observe the
following precautions to help maintain the expected performance life and reliability during long-term storage.
Storage Location
Temperature and Humidity
Store the drive in a location that is between -10 and +40°C with a relative humidity of 95% or less. Do not
store the drive in direct sunlight or where condensation or ice will form.
Storage temperatures between -20 to +60°C are allowed when storing the drive for approximately one month.
Note:
Package and store the drive during shipping to protect it from vibration and shock.
Dust and Oil Mist
Do not store the drive in a dusty location or a location subject to oil mist.
Corrosive Gas
Do not store the drive in a location subject to corrosive gas.
Salt Damage
Do not store the drive in a location subject to salt damage, such as near the ocean.
Do not store the drive in adverse environments. Store all drives in storage rooms that are not subjected to
adverse environmental elements.
Periodic Power Application
Yaskawa recommends applying power to the drive once per year for at least 30 minutes to prevent the capaci-
tors from deteriorating.
When applying power after power has not been applied for more than two years, Yaskawa recommends using
a variable power source and gradually increasing the power from 0 V to the rated drive voltage over a period
of 2 to 3 minutes. Apply power for at least 1 hour with no load to age the main circuit electrolytic capacitor.
Wire the drive normally and check for drive faults, overcurrents, motor vibration, speed fluctuations, and other
abnormalities during operation after performing the above procedure.
AC supply
Variable power source
R
S
T
Fig 8.1 Power Distribution Method
Maintenance and Inspection
Drive
MC
U
V
W
3
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