INSPECTION, MAINTENANCE AND TROUBLESHOOTING6.1.1 Servomotor3446.1 Inspection and MaintenanceThis section describes the basic inspections and maintenance for Σ-Series servo drives.6.1.1 Servomotor 344. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6.1.2 Servopack 345. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6.1.3 Replacing Battery for Absolute Encoder 346. . . . . . . . . . . . . . . . . . . . . . . . . . . .6.1.1 ServomotorFor inspection and maintenance of servomotors, follow the simple, daily inspection proce-dures in the table below.The AC servomotors are brushless. Simple, daily inspection is sufficient. The inspection andmaintenance frequencies in the table are only guidelines. Increase or decrease the frequen-cy to suit the operating conditions and environment.Item Frequency Procedure CommentsVibration andnoiseDaily Touch and listen. Levels higher than normal?Appearance According todegree ofcontaminationClean with cloth orcompressed air.InsulationresistancemeasurementYearly Disconnect Servopack andtest insulation resistance at500 V. Must exceed 10 MΩ.(See note below)Contact your Yaskawarepresentative if theinsulation resistance isbelow 10 MΩ.Replace oil seal Every 5,000hoursRemove servomotor frommachine and replace oil seal.Applies only to motors withoil seal.Overhaul Every 20,000hours or 5 yearsContact your Yaskawarepresentative.The customer should notdisassemble and clean theservomotor.Note Measure across the servomotor FG (green/yellow) and the U-phase (red), V-phase (white), or W-phase (blue) power lead.During inspection and maintenance, do not disassemble the servomotor.If disassembly of the servomotor is required, contact your Yaskawa representative.6
