LX660-4077-T296/L5R003 Fanuc Pulse coder servo i series 5m

Buy online your LX660-4077-T296/L5R003 Fanuc Pulse coder servo i series 5m reference LX660-4077-T296/LR003 from our e-store Cnc-shopping, specialist in CNC machine-tools spare parts.

This genuine FANUC pulse coder signal cable links the encoder on a FANUC servo motor to the front connector of a FANUC Alpha SVM i series servo amplifier. It is a servo signal cable for encoder feedback, not a fiber optic link, and is commonly sourced as a replacement unit or spare part to restore axis feedback on FANUC i series servo systems.

Designed for the encoder feedback path in FANUC CNC drives, this cable carries the pulse coder signals that the amplifier uses to close the loop and maintain precise axis positioning. A stable encoder link helps eliminate following errors and random homing faults that appear when a feedback cable is damaged or contaminated.

The motor end uses the black encoder-side connector that mates directly with the pulse coder on the FANUC servo motor. The amplifier end features the gray drive-side connector that plugs into the front of the Alpha SVM i series module. Both ends are straight, keyed and lock securely to prevent misconnection during field replacement.

With a 5 m length, the cable suits typical cabinet-to-axis routing on machining centers and lathes using FANUC i series servo packages. The construction is shielded for noise immunity around switching drives and contactors, and the outer jacket is oil-resistant per EN 60811-2-1 and resistant to organic oils in line with VDMA 24568 with Plantocut 8 S-MB, supporting use in coolant-rich machine spaces and carrier routing with frequent motion.

Built in Japan, this OEM-grade link is widely used on machines equipped with FANUC servo motors fitted with pulse coder i series encoders and the corresponding Alpha SVM i series amplifiers. It provides a drop-in solution when the existing feedback lead is cut, crushed or intermittently open.

Reference: LX660-4077-T296/LR003 (LX660-4077-T296#LR003)

Manufacturer: FANUC

Product type: FANUC pulse coder signal cable for Fanuc A860-2xxx encoder i series 

Main function: Connects the pulse coder on a FANUC servo motor to the front-port of a FANUC Alpha SVM i series servo amplifier to transmit encoder feedback.

Applications: Encoder feedback link on FANUC-driven machining centers, lathes, EDM and automation axes using i series motors and Alpha SVM i series amplifiers, suitable for field replacement, retrofit and maintenance stock.

Key technical data: Length 5 m, black encoder-side plug to motor pulse coder, gray drive-side plug to Alpha SVM i series front connector, straight keyed connectors, shielded signal construction, oil-resistant EN 60811-2-1, resistant to organic oils per VDMA 24568 with Plantocut 8 S-MB, made in Japan. This is a pulse coder signal cable, not a fiber optic cable.

On the production floor this cable is a practical fix when feedback alarms point to a damaged lead or contaminated connector. Maintenance teams use it as a CNC replacement component to quickly restore axis control after a cable failure, and many sites keep one as a stocked spare to cut downtime on legacy FANUC installations.

Each unit can be verified on appropriate CNC test benches or simulators by skilled engineers, checking continuity, shielding integrity and connector fit to the Alpha SVM i series port. Cables are protected for transit and shipped in robust packaging, with a standard limited warranty. Orders are available for fast dispatch depending on inventory, with worldwide shipping options.

This item is suitable as an emergency spare for older FANUC-equipped machines where feedback leads are prone to wear. Cnc-shopping can also support sourcing of obsolete parts and may offer repair or exchange services for related FANUC components to keep legacy machines running reliably.

Frequently asked questions about LX660-4077-T296/LR003 :

Which systems is it intended for?
It is intended for FANUC servo motors equipped with pulse coder i series encoders and Alpha SVM i series amplifiers. Verify connector keying and length against your machine layout.

How do I identify the correct ends during installation?
The black connector mates to the motor-side pulse coder, while the gray connector plugs into the front port of the Alpha SVM i series amplifier. The connectors are keyed to help prevent mis-mating.

Can this Fanuc signal cable be routed in a drag chain?
Yes, the jacket is oil-resistant and the construction supports flexible routing commonly found in cable carriers. Maintain proper bend radius and secure strain relief during installation.

What is the length and are other lengths available?
This model is 5 m. Other lengths for FANUC pulse coder signal cables may be available in our e-store, browse them or contact us for sourcing options.