8.3 Maintenance
310 YASKAWA SIEPC71061753C GA500 Technical Manual
8.3 Maintenance
The drive Maintenance Monitors keep track of component wear and tell the user when the end of the estimated
performance life is approaching. The Maintenance Monitors prevent the need to shut down the full system for
unexpected problems. Users can set alarm notifications for the maintenance periods for these drive components:
• Cooling fan
• Electrolytic capacitor
• Soft charge bypass relay
• IGBT
Contact Yaskawa or your nearest sales representative for more information about part replacement.
◆ Replaceable Parts
You can replace these parts of the drive:
• Cooling fan
If there is a failure in the main circuit, replace the drive.
You can remove the control circuit board of the drive. When you remove the control circuit terminal block of the
drive and install a new terminal block, you can easily replace the control circuit terminal block. Refer to Replace
the Drive on page 317 for more information.
If the drive is in the warranty period, contact Yaskawa or your nearest sales representative before you replace
parts. Yaskawa reserves the right to replace or repair the drive as specified by the Yaskawa warranty policy.
DANGER! Electrical Shock Hazard. Do not examine, connect, or disconnect wiring on an energized drive. Before servicing,
disconnect all power to the equipment and wait for the time specified on the warning label at a minimum. The internal capacitor
stays charged after the drive is de-energized. The charge indicator LED extinguishes when the DC bus voltage decreases
below 50 Vdc. When all indicators are OFF, measure for dangerous voltages to make sure that the drive is safe. If you do work
on the drive when it is energized, it will cause serious injury or death from electrical shock.
◆ Part Replacement Guidelines
Table 8.7 shows the standard replacement period for replacement parts. When you replace these parts, make sure
that you use Yaskawa replacement parts for the applicable model and design revision number of your drive.
Table 8.7 Standard Replacement Period
Parts Standard Replacement Period
Cooling fan 10 years
Electrolytic capacitor
*1
10 years
*1 If there is damage to parts that you cannot repair or replace, replace the drive.
Note:
Performance life estimate is based on these use 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. Operating conditions for
performance life estimate: Ambient temperature: Yearly average of 40 °C (IP20/UL Open Type), Load factor: 80%, Operating rate: 24
hours a day
◆ Monitors that Display the Lifespan of Drive Components
The drive keypad shows percentage values for the replacement parts to help you know when you must replace
those components. Use the monitors in Table 8.8 to check replacement periods. When the monitor value is 100%,
the component is at the end of its useful life and there is an increased risk of drive malfunction. Yaskawa
recommends that you check the maintenance period regularly to make sure that you get the maximum
performance life.
Table 8.8 Performance Life Monitors
Monitor No. Parts Description
U4-03
Cooling fan
Shows the total operation time of fans as 0 to 99999 hours. After this value is 99999, the drive automatically
resets it to 0.
U4-04
Shows the total fan operation time as a percentage of the specified maintenance period.
U4-05 Electrolytic capacitor
Shows the total capacitor usage time as a percentage of the specified maintenance period.
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