Purchase now A860-2000-T301 GE Fanuc Manual Pulse Generator Handwheel
Purchase now A860-2000-T301 to equip your machine operators with the ultimate tool for precise, tactile, and responsive axis positioning. The GE Fanuc A860-2000-T301 is an industrial-grade Manual Pulse Generator (MPG), commonly referred to as an electronic handwheel. This device is absolutely vital for the safe and accurate setup of CNC lathes, milling machines, and complex grinding centers. Internally, the MPG houses a highly precise optical encoder that generates exactly 100 pulses per full 360-degree rotation. As the operator turns the dial, these pulses are transmitted directly to the Fanuc CNC controller, which translates them into micro-movements of the machine’s servos. This allows operators to touch off tools, set work coordinate zero points, and manually jog heavy axes with micron-level accuracy without the risk of high-speed collisions. Manufactured to withstand the harshest factory environments, this authentic OEM handwheel ensures reliable performance shift after shift.
Core Technical Specifications
- Part Number: A860-2000-T301
- Manufacturer: GE Fanuc
- Component Type: Manual Pulse Generator (MPG) / Electronic Handwheel
- Resolution: 100 pulses per revolution (PPR)
- Operating Voltage: 5V DC (supplied directly by the CNC I/O)
- Output Signal: Two-channel quadrature optical encoder signals (A and B phases)
- Housing: High-impact, coolant-resistant industrial polymer
- Dial Mechanism: Distinct tactile detents for precise step-by-step jogging
Installation Advice and Wiring Verification
Installing the A860-2000-T301 handwheel is generally straightforward, but extreme care must be taken regarding the pinout configuration. Because the MPG operates on a 5V DC circuit to power its internal optical encoder, accidentally wiring the supply lines to a 24V DC I/O terminal will instantly destroy the device’s internal circuitry. Always consult the specific Fanuc connection manual for your exact CNC control generation (e.g., Series 0i, 16i, or 31i) before soldering or crimping the connection terminals. Furthermore, ensure that the shielded cable connecting the handwheel to the operator panel is properly grounded at the control cabinet end only. Terminating the shield at both ends can create a ground loop, which may induce electrical noise and cause the CNC axis to jump or drift erratically when the handwheel is not actively being turned.
Frequently Asked Questions (FAQs)
Why is my machine axis jumping or skipping when I turn the A860-2000-T301? Erratic axis movement during MPG use is almost always caused by one of two issues: either the internal optical disc of the handwheel has been contaminated by cutting fluid or heavy impacts, or the shielded cable connecting it to the CNC has a break in the internal wires. If the cable tests fine, the MPG unit must be replaced.
Can I repair the internal encoder of this handwheel? GE Fanuc seals these MPGs at the factory to protect the delicate optical sensors from dust and oil. While the outer dial and springs can sometimes be cleaned, attempting to open and repair the internal optical encoder usually results in permanent misalignment. Complete replacement is the standard industrial practice.
Is this handwheel compatible with non-Fanuc CNC controls? The A860-2000-T301 utilizes standard 5V quadrature A/B phase signals. While it is electronically possible to interface it with other brands that accept 5V 100 PPR inputs, it is specifically designed and certified for seamless integration with GE Fanuc I/O architectures.
Do you need more references from this brand? Explore our full catalog of GE Fanuc here.
