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GE Fanuc A17B-3900-0124
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GE Fanuc A20B-3400-0020
GE Fanuc A20B-3400-0020

GE Fanuc A20B-2001-006506A

  • Product Name: GE Fanuc A20B-2001-006506A
  • Category: CNC Main Board / System Motherboard
  • Series: Series 0i / 16i / 18i / 21i / 30i Compatible
  • Manufacturer: GE Fanuc Automation
  • Description: Primary CPU/motherboard assembly for Fanuc CNC control systems. Contains the main processor, memory, ROM, DRAM, and system bus for executing NC programs, PLC logic, and servo control.
Category:
Description
  • Model Series: A20B-2001 Series — Main Controller Board
  • Processor: Fanuc proprietary RISC processor (32-bit)
  • Memory: SRAM + Flash ROM for program storage; battery-backed SRAM for parameter retention
  • Bus: FSSB (Fanuc Serial Servo Bus) + internal I/O Link
  • Axes Support: Up to 24 axes (depends on firmware and configuration)
  • Interfaces: RS-232C, Ethernet, USB, memory card slot
  • Voltage: 24V DC (internal regulation)
  • Operating Temperature: 0°C to 45°C
  • Material: Multi-layer FR-4 PCB, aluminum heatsink, gold-plated edge connector
  • Function: Executes G-code/M-code, manages servo loop, handles PLC (PMC) logic, coordinates machine operation
  • Industry Application: CNC machining centers, lathes, grinding machines, wire EDM, laser cutting systems
  • Installation Requirement: Must be installed in a vibration-dampened, dust-free cabinet with stable 24V DC power supply; battery must be replaced every 2–3 years to prevent data loss
  • Notes: Board revision (A, B, C) affects compatibility; verify exact revision before replacement
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