Vacon NXP series, Руководство по аппаратному обеспечению системы

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Introduction vacon • 9
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1.7 Storage
If the system drive is to be kept in store before use, make sure that the ambient conditions are
acceptable:
• Storing temperature –40…+70 °C
• Relative humidity <95%, no condensation
The environment should also be free from dust. If there is dust in the air, the drive should be well
protected to make sure dust does not get into the drive.
If the drive is to be stored during longer periods, the power should be connected to the drive once
in 24 months and kept on for at least 2 hours. If the storage time exceeds 24 months the electrolytic
DC capacitors need to be charged with caution. Therefore, such a long storage time is not
recommended.
If the storing time is much longer than 24 months, the recharging of the capacitors has to be carried
out so that the possible high leakage current through the capacitors is limited. The best alternative
is to use a DC power supply with adjustable current limit. The current limit has to be set for example
to 300-500 mA and the DC power supply has to be connected to the B+/B- terminals (DC supply
terminals).
DC voltage must be adjusted to nominal DC voltage level of the unit (1.35xU
n
AC) and supplied at
least for 1 hour.
If DC voltage is not available and the unit has been stored de-energized much longer than 1 year,
consult factory before connecting power.