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A06B-6079-H105 is a Servo Amplifier Module manufactured by FANUC, widely used in FANUC CNC systems to drive servo motors. It belongs to the FANUC ALPHA Series Servo Amplifiers, known for their high performance and reliability, making them ideal for various CNC machines and industrial automation applications.
Parameter | Description |
| Model | A06B-6079-H105 |
| Series | FANUC Alpha Servo Amplifier |
| Input Voltage | 283–325 V 4.75 kW |
| Rated Output Current | 18.7 A |
| Cooling Method | Forced air cooling (Fan type) |
| Interface | Serial communication with FANUC CNC control |
| Alarm Display | 7-segment LED indicator for error diagnosis |
| Weight | Approx. 5 kg |
| LED Alarm Code | Alarm Type / Description | Possible Cause | Troubleshooting Steps / Actions |
|---|---|---|---|
| 1 ALM | Fan Alarm / Overheating | Fan not rotating, clogged with oil or dust, or fan failure | Clean or replace fan; check wiring from fan socket to CN1; replace small interface board |
| 2 ALM | DC Link Low Voltage | AC input voltage too low; rectifier fault; detection circuit failure | Check 3-phase AC input; verify MCC contactor; inspect detection resistor; replace servo unit if needed |
| 5 ALM | Power Unit Low Voltage | Control power too low or detection fault | Measure AC input; check MCC contacts; inspect resistor; replace power unit or servo unit |
| 8, 9, A, B, C, D, E | Abnormal Current Alarm | Short in main circuit / IPM module; drive control circuit fault | Test IPM with multimeter; swap boards (control/interface); check motor cable; verify servo parameters |
| 8. , 9. , A. , B. , C. , D. , E. | IPM Alarm (with dot indicator) | IPM module self-diagnosed error / overheating | Replace IPM or interface board; check load and cooling; swap motor and command cables for comparison |
| 0 / 401 (VRDY OFF) | Servo Ready Signal Failure | No DRDY signal from amplifier to CNC; power unit not engaged | Inspect connections; check 24 V supply; verify ESP and MCC circuits; observe LED transition (“–” → “00”); replace interface board if needed |
For a complete explanation of each alarm and detailed troubleshooting steps, please read the full article here.
Yes. All FANUC servo amplifiers are fully tested before delivery to ensure stable operation. We offer a 3-month warranty covering functional issues under normal use.
Absolutely. CNCFixtech provides comprehensive repair, exchange, and refurbishment services for all types of FANUC drives. Every repaired unit is thoroughly tested under load conditions to ensure long-term reliability and stable performance.
For more details about our repair process, please visit our Repair Service page.
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