Periodic Inspection and
Maintenance
8
8.7 Storage Guidelines
SIEPYEUOQ2A01A AC Drive Q2A Technical Manual 343
8.7 Storage Guidelines
The chemicals in the electrolytic capacitors and other electronic parts of the drive change over time. When you
store the drive for long periods of time, use the information in this section to help keep the performance life
estimates.
◆ Storage Location
• Temperature and Humidity
Put the drive in a location where the temperature is between -10 °C to +40 °C (14 °F to 104 °F) and the relative
humidity is 95% or less. Do not put the drive in direct sunlight or where there will be condensation or ice.
When you are storing the drive for a maximum of one month, you can put the drive in a location where the
temperature is -20 °C to +70 °C (4 °F to 158 °F).
Note:
Correctly package and store the drive during shipping to prevent vibration and shock damage.
• Dust and Oil Mist
Do not keep the drive locations with dust or oil mist. For example, cement factories and cotton mills.
• Corrosive Gas
Do not keep the drive in locations with corrosive gas. For example, chemical plants, refineries, and sewage
plants.
• Salt Damage
Do not keep the drive in salty locations. For example, locations near the ocean, and salt damage-designated
locations.
Do not keep the drive in unsatisfactory locations. Keep all drives in storage rooms that are safe from
unsatisfactory elements.
◆ Regluar Application of Power
To prevent deterioration of the capacitors, the manufacturer recommends that you apply power to the drive a
minimum of one time each year for a minimum of 30 minutes.
If you store the drive for longer than two years and do not apply power, the manufacturer recommends that you
use a variable power source and gradually increase the power from 0 V to the rated drive voltage over a period of
2 to 3 minutes. Apply power for a minimum of 1 hour with no load to reform the main circuit electrolytic
capacitor. When you operate the drive after you apply power, wire the drive correctly and check for drive faults,
overcurrents, motor vibration, motor speed differences, and other defects during operation.
A - AC power supply
B - Variable power source
C - Drive
Figure 8.77 Power Distribution Method
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