FANUC A03B-0819-C060 – Modular I/O Unit for 24 VDC Machine and Robot Control

The FANUC A03B-0819-C060 sits in the well-known FANUC modular I/O family and is typically used to expand reliable 24 VDC discrete I/O on FANUC CNCs (0i/16i/18i/21i series) and many robot cells via the FANUC I/O Link architecture. From my experience, this unit is chosen when you need a robust, cabinet-ready I/O block that mounts on a FANUC I/O rack/base and hosts plug-in I/O daughter boards to match your point count. You might notice that it keeps wiring tidy and serviceable—especially helpful on lines where downtime costs real money.

Company’s Order Placement Process and Guarantees

• – Warranty period: 365 days

• – Delivery time: typically 1 week for in‑stock, no more than 1 month at the latest

• – Payment: 50% advance payment; full payment before delivery

– Express delivery options: FedEx, UPS, DHL

Key Features

• FANUC I/O Link compatible – Integrates with FANUC CNC/robot controllers over the standard I/O Link backplane for fast, deterministic I/O updates.
• 24 VDC discrete I/O – Typically supports 24 V industrial logic; point count depends on the installed I/O daughter boards, so it scales without reworking the rack.
• Modular serviceability – Plug-in approach makes swap-outs quick; in many cases you can isolate a fault to the daughter board instead of replacing the entire unit.
• Industrial temperature range – Designed for control cabinets on shop floors; usually operates reliably in typical machine tool environments.
• Compact footprint – Frees space in crowded panels and keeps cable runs short; neat for retrofit projects or incremental line expansions.
• Good ecosystem compatibility – Commonly paired with FANUC digital I/O boards to build 16/32-point configurations without custom engineering.

Technical Specifications

Brand / Model	FANUC A03B-0819-C060
Product Type	Modular 24 VDC I/O unit for FANUC I/O Link racks
HS Code	8538.90 (Parts suitable for apparatus of 8537; final classification may vary by region)
Power Requirements	24 VDC supplied via backplane; typical consumption ≤ 0.5 A depending on I/O population
Operating Temperature	0 to +55 °C; 5–95% RH non‑condensing (typical control cabinet conditions)
Dimensions & Weight	Approx. 130 × 35 × 100 mm; ~0.3 kg (varies slightly by revision)
Signal I/O Types	24 VDC discrete inputs/outputs via plug‑in daughter boards; opto‑isolated channels in most builds
Communication Interfaces	FANUC I/O Link backplane interface (rack-based)
Installation Method	Mounts on a FANUC I/O base/rack within a ventilated control cabinet

Application Fields

This module is commonly deployed on:

• CNC machine tools (mills, lathes, grinders) needing extra door/interlock, sensor, or solenoid I/O.
• Robot cells with simple device control—conveyors, clamps, part presence, and light stacks.
• Packaging and assembly lines where distributed 24 VDC discrete I/O is preferred over large central panels.
• Retrofits on aging machines to standardize I/O to FANUC I/O Link without rewriting the entire control scheme.

A tier‑one integrator told us they swapped this unit into a busy machining cell and shaved hours off troubleshooting because the modular daughter boards made it obvious which slice had failed. That seems to be a recurring theme with this family.

Advantages & Value

• Reliability – FANUC hardware is built for uptime; components are rated for industrial environments and stable 24 V logic.
• Compatibility – Works within the FANUC I/O Link ecosystem; typically drop‑in with many 0i/16i/18i/21i controllers and robot platforms.
• Scalable cost – Only add the daughter boards you need; reduces overbuying of unused I/O.
• Procurement flexibility – We support quick replacements and tested units, reducing line stoppage risk.
• Technical support – Help with addressing, wiring practice, and basic commissioning saves you time during installation.

Installation & Maintenance

• Cabinet environment – Mount on the proper FANUC rack/base in a ventilated enclosure; keep ambient 0–55 °C with clean, dry air.
• Power & grounding – Use a stable 24 VDC supply with proper fusing; bond the cabinet ground and maintain shield continuity for I/O cables.
• Addressing – Set I/O slot addressing per controller documentation; many installations use dip-switch or parameter mapping on the controller side.
• Wiring – Stick to 24 VDC industrial practices (ferrules, cable markers, segregate signal and power). Verify sink/source wiring per the chosen daughter boards.
• Maintenance – Periodically check terminal tightness and look for discoloration on plugs; light dust cleaning is usually enough. Firmware is typically not user‑managed on this module class.
• Spare strategy – Keeping one spare unit or at least spare I/O daughter boards often shortens recovery time during unplanned stops.

Quality & Certifications

• CE compliant (typical for FANUC control components used in the EU).
• UL Recognized component in many builds for North American panels.
• RoHS compliance depends on production year and region; documentation can be provided on request.
• Manufacturer’s quality system aligned with ISO practices for industrial control products.
• Standard warranty: 365 days.

Commonly Paired Components

In many cases, the A03B-0819-C060 is combined with FANUC 24 VDC digital input/output daughter boards to build 16/32‑point blocks, plus an appropriate FANUC I/O base/rack. If you share your controller model and I/O count, we can match the exact boards and cables for a clean, documented build.