6.7 Spare Parts
176 YASKAWA ELECTRIC EZZ010928 FSDrive-MV1000 Instructions
◆ Storing Spare Parts
When keeping Power Cells, boards, or cooling fans in reserve, observe the following precautions to secure the life and
reliability.
• Do not unpack the product to store.
• When putting a board into storage after having unpacked it, enclose the board in a conductive, sealed bag.
• Protect the product not to be directly loaded during storage.
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Storage Location
• Store in a location with an ambient temperature of -5°C to +40°C, a relative humidity of no greater than 85%, with no
condensation or freezing.
• Store in a location where there is no exposure to direct sunlight.
• For storage over short periods (around a month), for example during transportation, a temperature range of -20 to 60°C
is permissible.
• Pack and store the products in such a way that they will not be affected by shock and vibration during transportation.
• Avoid storing the products in a location subjected to dusts and oil mist, such as cement factory and spinning mill.
• Avoid storing the products in a location subjected to corrosive gas, such as chemical factory, refinery, and sewage
plant.
• Avoid storing the products in a location where there is a risk of salt damage, such as a location near the beach, and in
salt damaged areas.
• Avoid storing products in a location subject to unfavorable conditions; they should be stored in a warehouse, office, or
similar location.
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Measures Against Power Cell Deterioration
To avoid deterioration of the Power Cell’s smoothing capacitor, apply voltage to it every six months.
Use a variable power supply to apply voltage. Increase the voltage applied gradually over two to three minutes and then
continue to apply the voltage for at least one hour with no load. For details, see When Using an AC Variable Power
Supply (Single-phase/Three-phase) on page 176 and When Using a DC Variable Power Supply on page 176.
When using a spare Power Cell for the first time after the Power Cell was replaced and loaded into the drive panel, leave
the main circuit power supply on continuously for twenty minutes after voltage was first applied to the Power Cell. Then
the smoothing capacitors of the Power Cell will become stable.
Note: A variable power supply to be provided by the customer.
Figure 6. 9
Figure 6.9 Applying Voltage to the Power Cell
When Using an AC Variable Power Supply (Single-phase/Three-phase)
1. Connect a single-phase variable power supply to terminals L1 and L2 (or L3).
Connect a three-phase variable power supply to terminals L1, L2 and L3.
2. Gradually increase the voltage from 0 to 600 Vac.
Note: If there has been no voltage application for two years or longer, gradually increase the voltage over 2 to 3 minutes.
When Using a DC Variable Power Supply
1. Connect the power supply to the terminals L1 and L2 (or L3).
2. Gradually increase the voltage from 0 to 800 Vdc.
Note: If there has been no voltage application for two years or longer, gradually increase the voltage over 2 to 3 minutes.
Variable power supply
L1
L3
L2
T1
T2
Power cell
(Example: for 200 A)
Power supply
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