YASKAWA T1000V - 7.3 PERIODIC MAINTENANCE

286 YASKAWA ELECTRIC SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual
7.3 Periodic Maintenance
7.3 Periodic Maintenance
The drive has various "maintenance monitors." 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 the following
maintenance periods.
• Cooling Fan
• Electrolytic Capacitors (Main Circuit)
• Inrush Prevention Circuit
•IGBT
◆ 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 for the heatsink-cooled drive, 35°C for the Finless Drive
• Load factor: 80% maximum
• Operation time: 24 hours a day
• Airborne dust, oil, and higher temperatures may shorten the drive's expected performance life.
■ Performance Life 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 LED 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 284 for more details.
Table 7.4 Performance Life Monitors Used for Component Replacement
Component Estimated Performance Life
Cooling Fan 10 years
Electrolytic Capacitors (Main Circuit) 10 years
<1>
<1> The drive has few serviceable parts and may require complete drive replacement.
Parameter Component Contents
U4-03
Cooling Fan
Displays the accumulated operation time of the cooling fan, from 0 to 99999 hours. This
value is automatically reset to 0 once it reaches 99999.
U4-04
Displays the accumulated cooling fan operation time as a percentage of the specified
maintenance period.
U4-05
Main Circuit (DC bus)
Electrolytic 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.