7.3 Periodic Maintenance
7.3
Periodic Maintenance
The drive 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 drive 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
• IGBTs
For replacement parts, contact the distributor where the drive was purchased or contact Yaskawa directly.
• 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, Circulation Fan
10 years
Electrolytic Capacitors
10 years <1>
<1> The drive has few serviceable parts and may require complete drive replacement.
N OTICE:
E s tim a te d p e rfo rm a n c e life b a s e d on s p e c ific usa g e con ditions. These c o n d itio n s are p ro v id e d fo r the p u rp o s e o f re p la c in g
p a rts to m a in ta in p e rfo rm a n ce . S om e p a rts m a y re q u ire m o re fre q u e n t re p la c e m e n t d u e to p o o r e n v iro n m e n ts o r rig o ro u s use. Usage
co n d itio n s fo r e s tim a te d p e rfo rm a n c e life :
A m b ie n t te m p e ra tu re : Yearly ave ra g e o f 40
° C
(IP 00 enclosure)
L o a d fa cto r: 80% m a xim u m
O p e ra tio n tim e: 24 h o u rs a da y
■ Performance Life Monitors Maintenance Monitors
The drive calculates the maintenance period for components that may require replacement during the life o f the drive. 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 drive may malfunction. Yaskawa
recommends checking the maintenance period regularly to ensure maximum performance life.
Refer to Recommended Periodic Inspection on page 274
for more details.
Table 7.4 Performance Life Monitors Used for Component Replacement
Parameter
Component
Contents
U4-03
Cooling Fan, Circulation Fan,
Control Board Cooling Fan
Displays the accumulated operation time o f the fan, from 0 to 99999 hours. This value is automatically reset to 0 once it
reaches 99999.
U 4-04
Displays the accumulated fan operation time as a percentage o f the specified maintenance period.
U4-05
DC Bus Capacitors
Displays the accumulated time the capacitors are used as a percentage o f the specified maintenance period.
U 4-06
Inrush (pre-charge) Relay
Displays the number o f tim es the drive is powered up as a percentage o f the performance life o f the inrush circuit.
U 4-07
IGBT
Displays the percentage o f the maintenance period reached by the IGBTs.
YASKAWA ELECTRIC SIEP C710616 33D YASKAWA AC Drive L1000A Technical Manual
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