1. General Information

• Part Number: A860-0203-T001

• Manufacturer: FANUC (Japan)

• Type: Manual Pulse Generator (MPG, handwheel), flangeless panel-mount

• Application: Precision manual jog/positioning for FANUC CNC systems (0i‑MF/TF, 30i/31i‑B, etc.)

• Construction: Optical encoder, plastic housing, tapered shaft

• Weight: ~0.5 kg (1.1 lb)

• Protection Class: IP54 (dust & splash resistant)

  

2. Electrical Specifications

• Supply Voltage: +5 VDC (4.5–5.25 VDC); max 7 V

• Current Consumption: 95 mA (typical)

• Output Signals: Quadrature A/B phases (90° offset), 100 pulses/rev (PPR)

• Output Type: Open‑collector / 330 Ω pull‑up; max 30 mA sink

• Terminals: 4‑pin (+5V, 0V/GND, A, B)

• Insulation Resistance: ≥1 MΩ @ 500 VDC

• Dielectric Strength: 1,000 VAC / 1 min (between terminals & housing)

3. Environmental Ratings

• Operating Temp: −5 °C to +60 °C

• Storage Temp: −20 °C to +70 °C

• Humidity: 30–90 %RH (non‑condensing)

• Altitude: ≤1,000 m

• Vibration: 0.5 g (10–500 Hz)

4. Mechanical Specifications

• Dial Diameter: 80 mm (3.15 in)

• Shaft: Tapered, flangeless; panel cutout Ø58 mm

• Rotation: 360° continuous; 100 detents (1 detent = 1 pulse)

• Markings: 0–100 (2‑unit increments); central knob for fine adjustment

5. Compatibility

CNC Systems

• FANUC 0i‑D / 0i‑MF / 0i‑TF

• FANUC 30i / 31i / 32i‑B

• FANUC 16i / 18i / 21i‑B

Amplifiers

• αiSV, βiSV series servo amplifiers

• FSSB (FANUC Serial Servo Bus) networks

6. Installation

1. Panel Cutout: Ø58 mm; mount horizontally, allow ≥50 mm clearance behind panel

2. Wiring (4‑terminal):

   • +5V: Power supply

   • 0V: Ground

   • A: Phase A output

   • B: Phase B output

3. Cable: Use shielded twisted‑pair (STP); max length 10 m

4. Torque: Terminal screws 0.5–0.6 N·m

5. Grounding: Connect housing to protective earth (PE)

7. Operation

• Rotation: Clockwise = positive direction; Counterclockwise = negative direction

• Resolution: 1 pulse = 1 detent; 100 pulses/rev

• Multiplier: Set CNC to ×1, ×10, ×100 (per pulse movement: 0.001 mm, 0.01 mm, 0.1 mm)

• Axis Select: Use CNC panel switch to assign MPG to X/Y/Z/4th axis

8. Safety & Warnings

• High Voltage: Disconnect power before installation/wiring; only qualified personnel

• No Modification: Do not open or modify the unit; voids warranty

• Overload: Do not exceed 7 VDC supply or 30 mA output current

• Environment: Avoid water, moisture, corrosive gases, direct sunlight

• Warranty: 12 months (genuine FANUC new)

9. Related Part Numbers

• A860-0202-T001: Older flange‑mount model (replaced by A860-0203-T001)

• A860-0203-T010: Pendant‑type MPG (with axis/multiplier switches)

• A860-0203-T013: Flanged panel‑mount MPG