Periodic Maintenance - YASKAWA U1000 Series Technical Manual

7.3 Periodic Maintenance

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.
For replacement parts, contact the distributor where the drive was purchased or contact Yaskawa directly.
• Cooling Fan, Circulation Fan
• Capacitors for the control power supply
• Inrush Prevention Circuit
 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.
Cooling Fan, Circulation Fan
Capacitors for the control power supply
<1> Capacitors for the control power supply cannot be replaced on some models. Complete drive replacement may be required for these models.
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 (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 353
Table 7.4 Performance Life Monitors Used for Component Replacement
Parameter Component
U4-03
Cooling Fan, Circulation Fan
U4-04
U4-05 DC Bus Capacitors
U4-06 Pre-charge Circuit
354
Table 7.3 Estimated Performance Life
Component
Displays the accumulated operation time of the fan from 0 to 99999 hours. This value is automatically reset to 0 after it
reaches 99999.
Displays the accumulated fan operation time as a percentage of the specified maintenance period.
Displays the accumulated time the capacitors are used as a percentage of the specified maintenance period.
Displays the number of times the drive is powered up as a percentage of the performance life of the inrush circuit.
Estimated Performance Life
10 years
10 years
<1>
for more details.
Contents
YASKAWA ELECTRIC SIEP C710636 03A YASKAWA U1000 Technical Manual