1 Outline1-161.7 Combinations for Multi-Winding Drive SystemsThis section gives the combinations for a multi-winding drive system.1.8 Inspection and Maintenance of a Multi-Winding Drive SystemThis section describes the inspection and maintenance of a multi-winding drive system.(1) Inspections for a Multi-Winding Drive SystemThe multi-winding drive unit, SERVOPACKs, and converters do not need to be inspected every day. Performthe following inspections at least once every year. Other routine inspections are not required.(2) Parts Replacement Schedule for a Multi-Winding Drive SystemThe following electric or electronic parts in the multi-winding drive unit, SERVOPACKs, and converters aresubject to mechanical wear or deterioration over time. Refer to the following tables for the standard replace-ment periods. Multi-Winding Drive Unit SERVOPACKs and ConvertersNote: The standard replacement period is given for usage under the following operating conditions.• Surrounding air temperature: Annual average of 30°C• Load factor: 80% max.• Operation rate: 20 hours/day max.Main CircuitPowerSupplyVoltageServomotor SERVOPACKs Converters Multi-WindingDrive UnitMotor Speed Model:SGMVV- Capacity Model: SGDV- Model:SGDV-COA Model: JUSP-Three-phase, 400VAC 1500 min-1 7EDB 75 kW 101J 5EDA MD3DAItem Frequency Procedure CommentsExteriorAt least once a yearCheck for dust, dirt, and oilon the surfaces. Clean with compressed air.Loose ScrewsCheck for loose terminalblock and connectorscrews.Tighten any loose screws.Part StandardReplacement Period Operating ConditionsElectrolyticCapacitor 10 years • Surrounding air temperature: Annual average of 30°C• Operation rate: 20 hours/day max.Part Standard Replacement PeriodCooling Fan 4 to 5 yearsSmoothing Capacitor 7 to 8 yearsOther Aluminum Electrolytic Capacitor 5 yearsRelays –Fuses 10 yearsThe parameters of any multi-winding drive unit overhauled by Yaskawa are reset to thefactory settings before shipping. Be sure to confirm that the parameters are properly setbefore starting operation.
