Yaskawa R1000 Series Power Regenerative Unit - Manual (Page 119)

6.3 Periodic Maintenance
YASKAWA ELECTRIC TOEP C710656 08B YASKAWA Power Regenerative Unit - R1000 Instruction Manual 119
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6.3 Periodic Maintenance
The regenerative unit 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 regenerative
unit allows the user to check predicted maintenance periods for the components listed below.
• Cooling Fan, Circulation Fan, Control Board Cooling Fan
• Electrolytic Capacitors
• Inrush Prevention Circuit
For replacement parts, contact the distributor where the regenerative unit was purchased or contact Yaskawa directly.
◆ Replacement Parts
Table 6.3 contains the estimated performance life of components that require replacement during the life of the
regenerative unit. Only use Yaskawa replacement parts for the appropriate model and revision.
Table 6.3 Estimated Performance Life
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
■ Performance Life Monitors Maintenance Monitors
The regenerative unit calculates the maintenance period for components that may require replacement during the life of
the regenerative unit. 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 regenerative unit may malfunction. Yaskawa
recommends checking the maintenance period regularly to ensure maximum performance life.
Refer to Inspection on page 116 for more details.
Table 6.4 Performance Life Monitors Used for Component Replacement
Component Estimated Performance Life
Cooling Fan, Circulation, Control Board Cooling Fan
<1> The regenerative unit has few serviceable parts and may require complete regenerative unit replacement.
10 years
Electrolytic Capacitors 10 years
<1>
Fuse 10 years
Parameter Component Contents
U4-03 Cooling Fan
Circulation Fan
Control Board Cooling 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 Inrush (pre-charge) Relay
Displays the number of times the regenerative unit is powered up as a percentage of the
performance life of the inrush circuit.
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