Description
Product Overview
The FANUC A860-0382-T124 is a magnetic absolute pulse coder (encoder) integrated with amplifier, designed for FANUC αi series servo motors in CNC machining centers, lathes and milling machines. It delivers high-resolution real-time angular position and rotational speed feedback to the FANUC CNC control system, ensuring precise closed-loop motion control. This encoder adopts magnetic sensing technology, offering superior resistance to oil mist, dust and vibration compared with traditional optical encoders. The suffix T124 defines the built-in cable length, shielding structure and connector specification for direct matching with FANUC servo amplifier units. It serves as a drop-in replacement spare part for industrial CNC automation maintenance.
Technical Specifications
| Parameter | Details |
|---|---|
| Part Number | A860-0382-T124 |
| Manufacturer | FANUC (Japan) |
| Product Type | Magnetic Absolute Pulse Coder / Servo Encoder |
| Compatible Motor | FANUC αi series AC servo motors |
| Resolution | 1,048,576 pulses per revolution (20-bit absolute) |
| Sensing Principle | Magnetic detection with integrated amplifier |
| Operating Supply | 5 VDC |
| Operating Temperature | 0°C ~ +60°C |
| Storage Temperature | -20°C ~ +70°C |
| Relative Humidity | 35% ~ 95% non-condensing |
| Protection Class | IP64 |
| Max Output Frequency | 2 MHz |
| Cable & Connector | Built-in shielded cable, 10-pin dedicated connector |
| Weight | Approx. 0.45 kg |
Compliance & Certifications
- CE certification for EMC and machinery safety
- Compliant with Japanese JIS industrial standards
- Factory full functional testing before shipment
- Strict quality inspection for vibration and signal stability
Storage & Installation Guidelines
Storage Requirements
- Store in dry warehouse, recommended temperature 10°C ~30°C, RH less than 70% non-condensing
- Keep in original sealed anti-static packaging before installation
- Avoid heavy impact, strong vibration, cutting oil mist, corrosive gas
- ESD protection is mandatory during unpacking and handling
Installation Instructions
- Power off the CNC machine and servo drive completely before encoder replacement
- Wear ESD wristband to prevent electrostatic damage to internal magnetic circuit
- Align encoder mounting flange with servo motor shaft, carefully install and fasten mounting screws with proper torque
- Route the shielded encoder cable and connect to servo amplifier following FANUC wiring manual
- Complete encoder pulse initialization and reference point setup on CNC system
- Run dry test and check position feedback signal without abnormal alarm
- Installation must be performed by certified CNC service technicians
FAQ
Q: What motor series does A860-0382-T124 fit? A: It is made for FANUC αi series AC servo motors for CNC machine tools.
Q: Is it an absolute encoder or incremental encoder? A: This is an absolute magnetic pulse coder, retaining position data after power loss.
Q: Can it replace A860-0382-T120 directly? A: Mechanical mounting is compatible, verify cable length and CNC software parameter before swap.
Q: What common failure symptoms of this pulse coder? A: Position deviation, servo 310 / 311 alarm, abnormal motor vibration or intermittent position loss.
Q: What warranty is available? A: 12-month standard warranty for fully tested encoders under normal operating conditions.
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