FANUC A02B-0307-B500 31i-A CNC Controller Basic Unit

FANUC A02B-0307-B500 Series 31i-A CNC Control Basic Unit

Technical Specifications

• Brand: FANUC
• Model: A02B-0307-B500
• Category: CNC Control Basic Unit
• Series: FANUC Series 31i-A
• Configuration: LCD-mounted type, no slot
• Supply Voltage: 24 VDC ±10%
• Heat Output: 33 W (7.2" STN monochrome LCD-mounted type)
• Operating Temperature: 0 to 58 °C
• Storage/Transport Temperature: −20 to 60 °C
• Relative Humidity: 75%RH or less normal; up to 95%RH short periods (≤1 month), no condensation
• Built-in Ports: JD36A (RS-232C), JD51A (I/O Link), CD38A (Ethernet)
• Protocols: RS-232C, I/O Link, Ethernet
• Communication Expansion: Via backplane I/O modules
• Dimensions: Outline drawing per B-63943EN/02 Appendix A
• Weight: ~2.2 kg
• Lifecycle: Legacy generation, superseded by Series 30i/31i/32i-B

Core Performance and Environmental Resilience

• The A02B-0307-B500 operates on a stable 24 VDC ±10% supply for predictable control performance.
• A 33 W heat output suits the 7.2" STN monochrome LCD-mounted configuration in enclosed cabinets.
• The control unit handles ambient temperatures from 0 to 58 °C during continuous operation.
• Storage and transport tolerate −20 to 60 °C without affecting internal electronics.
• Normal humidity stays at 75%RH or less, with short-term exposure up to 95%RH allowed.
• FANUC built the unit to resist electrical interference through shielded I/O Link and Ethernet ports.
• No-slot architecture keeps the footprint compact and reduces cabling complexity.

Installation Guide

• Mount the A02B-0307-B500 in a clean, vibration-controlled cabinet with adequate airflow.
• Connect the 24 VDC supply through a dedicated circuit rated for ±10% voltage tolerance.
• Route the JD36A RS-232C cable away from high-current lines to reduce noise coupling.
• Link JD51A to the I/O Link bus and verify termination before powering the system.
• Attach CD38A Ethernet to the factory network using shielded twisted-pair cabling.
• Confirm ambient temperature stays below 58 °C during a full load test run.
• Check all connectors for secure seating before you energize the control unit.
• Record the outline drawing dimensions from B-63943EN/02 Appendix A for panel clearance.

Package Contents

• One FANUC A02B-0307-B500 Series 31i-A CNC control basic unit
• One protective shipping carton with anti-static foam
• One connector protection set for JD36A, JD51A, and CD38A
• One quick reference label with port identification
• Shipping via FedEx, UPS, or DHL according to your delivery preference

FAQ

• Q: What supply voltage does the A02B-0307-B500 require?
  A: The unit runs on 24 VDC ±10% and needs a dedicated supply circuit.
• Q: Which communication ports come built in?
  A: The unit provides JD36A RS-232C, JD51A I/O Link, and CD38A Ethernet ports.
• Q: What is the operating temperature range?
  A: The control unit operates from 0 to 58 °C in normal ambient conditions.
• Q: How much heat does the unit produce?
  A: The 7.2" STN monochrome LCD-mounted type generates 33 W of heat output.
• Q: What does the no-slot design mean for installation?
  A: The basic unit uses the backplane for I/O expansion instead of onboard slots.
• Q: What is the unit weight for cabinet planning?
  A: The control unit weighs approximately 2.2 kg without packing materials.
• Q: Is the product new and in stock?
  A: We supply brand-new original units, and we keep stock available for immediate order.
• Q: How fast do you ship and which carriers do you use?
  A: We dispatch within 5 days using DHL, FedEx, or UPS.
• Q: What is your return policy?
  A: We support returns within 30 days of delivery.
• Q: Is this model still in active production?
  A: FANUC classifies the Series 31i-A generation as legacy and superseded by the B series.