Compatibility

• CNC Series: FANUC 30i/31i/32i‑A, 0i‑TD/MD (high‑end and mid‑range systems)

• Controller: F30I servo card B12, DSP 2, 1‑channel FSSB

• Applications: CNC machining centers, lathes, multi‑axis machine tools

Key Specifications

• Axis Capacity: 8 servo axes per card

• Communication: FSSB (FANUC Servo Bus) optical fiber interface

• Onboard DSP: Dual digital signal processors for motion control

• Power: 5 V DC from CNC backplane

• Operating Temperature: 0 °C to +40 °C

• Humidity: Up to 80% RH (non‑condensing)

• Altitude: Up to 1,000 m (no derating)

Main Functions

• Axis Control: Manages up to 8 servo axes (position, speed, torque loops)

• FSSB Communication: High‑speed optical link between CNC and servo amplifiers

• Motion Processing: Executes CNC interpolation and PMC axis logic

• Diagnostics: Onboard LEDs for power, FSSB link, and axis error status

Common Sub‑types

• A20B-3300-0448/088: Standard 8‑axis card for 30i/31i systems

• A20B-3300-0448/13B: 8‑axis card with enhanced FSSB driver

Installation & Handling

• ESD Protection: Always use an anti‑static wrist strap

• Power Off: Cut CNC power and wait 5 minutes before replacement

• Slot: Install in dedicated servo/axis slot (usually slot 1 or 2)

• Cables: Connect FSSB optical fibers securely (no sharp bends)

Troubleshooting

• FSSB Link Error: Check fiber cables, connectors, and amplifier power

• Axis Alarm: Verify axis parameter settings and servo amplifier status

• No Display: Check backplane power and card seating