6.3 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
• Capacitors for the Control Power Supply
• Inrush Prevention Circuit
For replacement parts, contact the distributor where the drive was purchased or contact Yaskawa directly.
u
Replacement Parts
use Yaskawa replacement parts for the appropriate drive model and revision.
Table 6.3 Estimated Performance Life
Component
Estimated Performance Life
Cooling Fan, Circulation Fan
10 years
Capacitors for the Control Power Supply
10 years
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/Open Type enclosure)
Load factor: 80% maximum
Operation time: 24 hours a day
n
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 HOA keypad 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 231
for more details.
Table 6.4 Performance Life Monitors Used for Component Replacement
Parameter
Component
Contents
U4-03
Cooling Fan
Circulation Fan
Displays the accumulated operation time of the fan from 0 to 99999 hours. This value is automatically reset to
0 after 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
Pre-Charge Circuit
Displays the number of times the drive is powered up as a percentage of the performance life of the inrush
circuit.
6.3 Periodic Maintenance
YASKAWA TOEPYAIUPW01A YASKAWA AC Drive - U1000 iQpump Matrix Drive User Manual
233
6
Periodic Inspection & Maintenance