Periodic Inspection and
Maintenance
8
8.3 Maintenance
SIEPYEUOQ2A01A AC Drive Q2A Technical Manual 309
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 the manufacturer or your nearest sales representative for more information about part replacement.
◆ Replaceable Parts
You can replace these parts of the drive:
• Control circuit terminal board
• Cooling fan, circulation fan
• Keypad
If there is a failure in the main circuit, replace the drive.
If the drive is in the warranty period, contact the manufacturer or your nearest sales representative before you
replace parts. The manufacturer reserves the right to replace or repair the drive as specified by the warranty policy.
WARNING! 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, remove the covers before measuring for dangerous voltages to make sure that the
drive is safe. Failure to obey will cause death or serious injury.
◆ Part Replacement Guidelines
The following table shows the standard replacement period for replacement parts. When you replace these parts,
make sure that you use manufacturer approved replacement parts for the applicable model and design revision
number of your drive.
Table 8.7 Standard Replacement Period
Part 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.
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
◆ 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 the table below 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. The
manufacturer 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. Component 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.
U4-06 Soft charge bypass relay
Shows the number of times the drive is energized as a percentage of the performance life of the inrush circuit.
U4-07 IGBT
Shows the percentage of the maintenance period reached by the IGBTs.
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