YASKAWA L1000A - Periodic Maintenance

7.3 Periodic Maintenance
YASKAWA ELECTRIC SIEP C710616 38F YASKAWA AC Drive - L1000A Technical Manual 323
Periodic Inspection & Maintenance
7
7.3 Periodic Maintenance
The drive has Maintenance Monitors that keep track of component wear. This feature provides advance maintenance
warning and eliminates the need to shut down the entire system for unexpected problems. The drive allows the user to
check predicted maintenance periods for the components listed below.
• Cooling Fan, Circulation Fan, Control Board Cooling Fan
• Electrolytic Capacitors
• Inrush Prevention Circuit
•IGBTs
For replacement parts, contact the distributor where the drive was purchased or contact Yaskawa directly.
◆ Replacement Parts
Table 7.3 contains the estimated performance life of components that require replacement during the life of the drive.
Only use Yaskawa replacement parts for the appropriate drive model and revision.
Table 7.3 Estimated Performance Life
NOTICE: Estimated performance life based on specific usage conditions. These conditions are provided for the purpose of replacing
parts to maintain performance. Some parts may require more frequent replacement due to poor environments or rigorous use. Usage
conditions for estimated performance life:
Ambient temperature: Yearly average of 40°C (104°F) (IP00 enclosure)
Load factor: 80% maximum
Operation time: 24 hours a day
■ Performance Life Monitors Maintenance Monitors
The drive calculates the maintenance period for components that may require replacement during the life of the drive. A
percentage of the maintenance period is displayed on the digital operator by viewing the appropriate monitor parameter.
When the maintenance period reaches 100%, there is increased risk that the drive may malfunction. Yaskawa
recommends checking the maintenance period regularly to ensure maximum performance life.
Refer to Recommended Periodic Inspection on page 322 for more details.
Table 7.4 Performance Life Monitors Used for Component Replacement
Component Estimated Performance Life
Cooling Fan, Circulation Fan
<1> The drive has few serviceable parts and may require complete drive replacement.
10 years
Electrolytic Capacitors 10 years
<1>
Parameter Component Contents
U4-03
Cooling Fan, Circulation Fan,
Control Board Cooling Fan
Displays the accumulated operation time of the fan, from 0 to 99999 hours. This value is automatically reset to 0 once it
reaches 99999.
U4-04
Displays the accumulated fan operation time as a percentage of the specified maintenance period.
U4-05 DC Bus Capacitors
Displays the accumulated time the capacitors are used as a percentage of the specified maintenance period.
U4-06 Inrush (pre-charge) Relay
Displays the number of times the drive is powered up as a percentage of the performance life of the inrush circuit.
U4-07 IGBT
Displays the percentage of the maintenance period reached by the IGBTs.
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