The drive keypad shows percentage values for the replacement parts to help you know when you must replace those components. Use the monitors in Table 1 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. Yaskawa recommends that you check the maintenance period regularly to make sure that you get the maximum performance life of the drive.
Table 1. Performance Life Monitors
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Monitor No.
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Parts
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Description
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U4-03
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Cooling fan
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Shows the total operation time of fans as 0 to 99999 hours. After this value is 99999, the drive automatically resets it to 0.
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U4-04
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Shows the total fan operation time as a percentage of the specified maintenance period.
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U4-05
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Electrolytic Capacitor
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Shows the total capacitor usage time as a percentage of the specified maintenance period.
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U4-06
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Soft charge bypass relay
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Shows the number of times the drive is energized as a percentage of the performance life of the inrush circuit.
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U4-07
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IGBT
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Shows the percentage of the maintenance period for the IGBTs.
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