Fiber Optic Cable A66L-6001-0026#L30R03 A66L-6001-0026/L30R03 A66L-6OO1-OO26#L30RO3

A66L-6001-0026#L30R03 | FANUC Fiber Optic Cable — 30m / N/S Sheathed / HSSB / Long-Run CNC to Servo Drive

30-Metre HSSB Optical Cable for Extended Drive System Layouts

The A66L-6001-0026#L30R03 is the 30-metre variant of FANUC's reinforced fiber optic cable series for the HSSB (High-Speed Serial Bus) — the optical data link between FANUC CNC control units and servo amplifier modules. At double the length of the 15m variant, the A66L-6001-0026#L30R03 serves installations where the physical separation between the CNC control cabinet and the drive cabinet exceeds 15 metres — large-format machine tools, factory-wide CNC installations, and facilities where machine layout requirements place the drive system at substantial distance from the control electronics.

Key Specifications

HSSB Cable Selection — 15m or 30m

Both variants serve the same technical function. Length selection is determined by the installation:

Measure the actual cable route: Measure the full cable routing path — following cable trays, conduits, and routing corners rather than straight-line distance — from the CNC unit's optical port to the servo amplifier's corresponding optical port.

Add routing allowance: Add 10–20% to the measured route distance to allow for routing adjustments, service loops at each end, and future flexibility.

Select the next standard length that exceeds this total: If the routed distance with allowance is 16–30m, the A66L-6001-0026#L30R03 is the appropriate selection. If it is under 15m, the #L15R03 is sufficient.

Applications

Large-format CNC machining centres: Portal mills, gantry machining centres, and large horizontal machining centres with substantial physical separation between CNC and drive cabinet.

Floor-type horizontal boring machines: Large-capacity floor-type boring mills where drive cabinets are positioned in adjacent electrical rooms.

CNC transfer lines: Multi-station CNC transfer lines where a FANUC controller at one end of the line communicates with servo amplifiers at stations across the full line length.

Factory integration projects: Facilities integrating FANUC CNC controls into existing production areas where panel placement is constrained by plant layout — requiring longer optical cable runs than standard installations.

FAQ

Q1: What is the maximum cable length for A66L-6001-0026 on the FANUC HSSB?

FANUC specifies the maximum optical fiber cable length for the HSSB — which defines whether the 30m cable is within the permitted system limit. FANUC's installation manuals for the specific CNC and drive system confirm this maximum length. The A66L-6001-0026 series includes longer variants for installations requiring even greater reach — always confirm from the FANUC system documentation that the selected cable length is within specification.

Q2: How does the 30m variant compare to the 15m in terms of optical loss budget?

Longer plastic optical fiber cable introduces greater optical attenuation than shorter cables. The 30m cable has approximately twice the insertion loss of the 15m cable at the same wavelength. FANUC's HSSB interface optics are designed with sufficient power margin to accommodate the maximum specified cable length — the 30m loss is within the HSSB's optical link budget as long as the total system cable length does not exceed the FANUC-specified maximum.

Q3: Can I connect two 15m cables to create a 30m link?

No. Optical fiber cables cannot be joined in the field by connecting cable ends together — doing so introduces connector insertion losses at the mid-point junction that exceed the optical budget, and the physical junction creates a mechanical weak point. If a 30m run is required, the A66L-6001-0026#L30R03 is the correct solution — a single continuous 30m cable without mid-run joints.

Q4: Is the R03 connector the same at both ends of A66L-6001-0026#L30R03?

Yes — the R03 connector is the same optical connector format at both ends of the cable. The cable is bidirectional: either end can connect to the CNC unit and either end can connect to the servo amplifier's matching optical port. The fiber itself is non-directional at DC optical levels — it carries light in both directions simultaneously (transmit and receive typically use separate fiber strands within the cable).