Storage Guidelines - YASKAWA GA700 Technical Manual

7.7

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 °C to +40 °C (14 °F to 104 °F) 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 °C to +70 °C (4 °F to 158 °F) 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 dusty locations or locations that are subject to oil mist, such as the site of a cement
factory or cotton mill.
• Corrosive Gas
Do not store the drive in locations that are subject to corrosive gas, such as the site of a chemical plant, a
refinery, or sewage plant.
• Salt Damage
Do not store the drive in locations that are subject to salt damage, such as near the ocean, and salt damage-
designated zones, in particular.
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 capacitors
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.
A - AC power supply
B - Variable power source
YASKAWA ELECTRIC SIEP C710617 01B YASKAWA AC Drive GA700 Technical Manual
C - Drive
Figure 7.31 Power Distribution Method

7.7 Storage Guidelines

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