Maintenance - YASKAWA GA700 Technical Manual

7.3

Maintenance

The drive has Maintenance Monitors that keep track of component wear. This drive is equipped with a function to
inform the user of the maintenance period when a specific component is approaching its expected performance
life. This feature provides advance maintenance warning and eliminates the need to shut down the entire system
for unexpected problems. The parts whose maintenance period can be checked using the performance life monitor
are as follows. For more information on part replacement, contact Yaskawa or your nearest sales representative.
• Cooling fan
• Electrolytic Capacitor
• Soft charge bypass relay
• IGBT
◆
Replaceable Parts
The parts of this product that can be replaced are as follows.
• Control circuit terminal board
• Cooling fan, circulation fan
• Keypad
Replace the drive itself completely if the main circuit fails.
Contact Yaskawa or your nearest sales representative before replacing parts if the drive is still under warranty.
Yaskawa reserves the right to replace or repair the drive according to Yaskawa warranty policy.
WARNING! Electrical Shock Hazard. Do not perform inspections or wiring while the drive is energized. De-energize all devices
before carrying out any wiring or repair operations. Voltage will remain within the capacitors inside the drive even after the
power has been switched off. The Charge LED is extinguished once the DC bus voltage goes below 50 V DC. To prevent
electric shock, always wait for at least the amount of time indicated on the warning labels and confirm that all indicators are
OFF. Then, remove the front cover and terminal cover, measure the input power supply voltage and the DC bus voltage, and
make sure that the voltages have been lowered to safe levels. Failure to comply may result in death or serious injury.
◆
Part Replacement Guidelines
The following table shows the standard replacement period of periodic replacement parts. When replacing parts,
only use Yaskawa replacement parts for the appropriate model and design revision number of the drive being
used.
Cooling fan
Electrolytic Capacitor
*1
*1 Replace the drive itself completely if parts that cannot be repaired or replaced become damaged.
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
◆
Drive Component Lifespan Monitor Function
As a periodic part replacement guideline, the keypad displays percentage values to determine when parts should
be replaced. To check replacement periods, use the following lifespan monitors. When the maintenance period
reaches 100%, the part replacement period has arrived and there is increased risk that the drive may malfunction.
Yaskawa recommends checking the maintenance period regularly to ensure maximum performance life.
Monitor No.
U4-03
Cooling fan
U4-04
U4-05 Electrolytic Capacitor
YASKAWA ELECTRIC SIEP C710617 01B YASKAWA AC Drive GA700 Technical Manual
Table 7.7 Standard Replacement Period
Part
Table 7.8 Performance Life Monitors
Part
Displays the cumulative operation time of fans 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.

7.3 Maintenance

Standard Replacement Period
10 years
10 years
Description
7
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