Series 16/18/160/180-Model C Maintenance Manual, GFZ-62755EN ...

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10. TROUBLESHOOTING(ANALOG INTERFACE SPINDLE)B–62755EN/0110.1AL–01(MOTOR OVERHEAT)Model 6S to 22S (A20B–1003–0010)(Start)PCB+24VMeasure voltage of *OH signalat input side of receiverALMRVR11CN2 Inside motor–3 TH24V(contact open)?NO0V–2YES· Fan motor is not operating· OverloadReduce cutting condition· Disconnection of signal lineReceiver circuit is faultyModel 1S to 3S (A16B–1100–0200)(Start)PCBCheck continuity across pin 2 and 3 ofCN2 and pin 9 and 10 of CN4ALM+15VRVCN2Inside motor–3TH–2Contact open ?NOCN4–9Inside unitTHYES0V–10· Fan motor is not operating· OverloadReduce cutting condition· Disconnection of signal lineReceiver circuit is faulty400
B–62755EN/0110. TROUBLESHOOTING(ANALOG INTERFACE SPINDLE)10.2AL–02(EXCESSIVEDEVIATION OFSPEED)(Start)Does it occurduring deceleration?YESNOApply a rotation commandand check whether motor rotates· Regenerative dischargecircuit is faulty· Regenerative transistormodule is faulty· Load inertia is large· PCB is faulty* Refer to 10.10“Confirmation ofTransistor Module”Does motor rotate?NO (No rotation)YESRotate the motor by handunder emergency stop stateand check display of the speed* Under AL–02not generatedYESCommand about10 rpm speed.Normal output atterminal U, V, W?Is the speeddisplayed?YES· Disconnection ofpower line· Motor is defective· Machine load is largeNO· PCB is faulty· Transistor module is faulty(Disconnection across C and E)· Unit is faulty (Check Ch.VDC)NODoes PA andPB change?NOYESCheck voltage ofRA and RBNO(2.5V ±0.2V)YES (2.5V ±0.2V)(Normal)· PCB is faulty· If current limitter is operating,machine load is excessive(more than 4. 2V at IU)· Pulse generator is faulty· Disconnection of feedbackcable· Poor contact of connectorPCB is faulty401
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GE Fanuc AutomationComputer Numeric
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B-62755EN/01PREFACEPREFACEDescripti
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B-62755EN/01 2.7 HOW TO REPLACE TH
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B-62755EN/01 7. AC SPINDLE (ANALOG
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B-62755EN/011DISPLAYAND OPERATION O
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B-62755EN/012. HARDWARE2.6.3Control
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B-62755EN/01APPENDIXC. LIST OF MAIN
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B-62755EN/01Numbers16-TC/MC, 160-TC
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B-62755EN/01INDEXMMain CPU board, 1
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Revision RecordFANUC MAINTENANCE
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Series 16/18/160/180-Model C Maintenance Manual, GFZ-62755EN ...

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