7.3 Periodic Maintenance
The drive has various "maintenance monitors". 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 the following maintenance periods.
• Cooling Fan
• Electrolytic Capacitors (Main Circuit)
• Inrush fuse
• IGBT
u
Replacement Parts
Table 7.3 contains the estimated performance life of components that require replacement during the life of the drive. Only use Yaskawa replacement
parts for the appropriate drive model and revision.
Table 7.3 Estimated Performance Life
Component Estimated Performance Life
Cooling Fan 10 years
Electrolytic Capacitors (Main Circuit) 10 years <1>
<1> The drive has few serviceable parts and may require complete drive replacement.
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 • Load factor: 80% maximum • Operation time: 24 hours a day
n
Performance Life 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 LED digital operator 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 258 for more details.
Table 7.4 Performance Life Monitors Used for Component Replacement
Parameter Component Contents
U4-03
Cooling Fan
Displays the accumulated operation time of the cooling fan, from 0 to 99999 hours. This value is automatically reset to 0 once
it reaches 999999.
U4-04
Displays the accumulated cooling fan operation time as a percentage of the specified maintenance period (displayed in percent
%).
U4-05
Main Circuit (DC bus) Electrolytic
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 drive is powered up as a percentage of the performance life of the inrush circuit.
U4-07 IGBT Displays the percentage of the maintenance period reached by the IGBTs.
n
Related Drive Parameters
Table 7.5 Maintenance Parameter Settings
Parameter
Parameter Name Control Mode
Operator Display V/f Open Loop Vector
Open Loop
Vector for
PM
o4-03 Cooling Fan Maintenance Setting (Operation Time) A A A
o4-05 Capacitor Maintenance Setting A A A
o4-07 Inrush Prevention Relay (pre-charge) Maintenance Setting A A A
o4-09 IGBT Maintenance Setting A A A
NOTICE: After replacing parts, reset the appropriate maintenance parameters (o4-03, o4-05, o4-07, and o4-09) to 0. If these parameters are not reset, the function will continue
to count down the performance life of the new replaced components.
7.3 Periodic Maintenance
260
YASKAWA ELECTRIC SIEP C710606 18A YASKAWA AC Drive – V1000 Technical Manual (Preliminary)
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