The FANUC A02B-0120-K831 is a Legacy control generation for industrial control and automation applications.

FANUC A02B-0120-K831 is a 5 m I/O ON/OFF signal cable built for the FANUC Series 16 CNC operator panel family. This passive cable carries operator-panel ON/OFF signals and draws no independent power, so its electrical and environmental ratings follow the host CNC rather than a separate specification.

What makes the A02B-0120-K831 a dependable spare for legacy CNC panels?

The cable belongs to the FANUC CNC accessory order code family A02B-0120 and is supplied as a legacy spare part for Series 16 operator panels. Because it is a passive component, it introduces no supply voltage requirement and no power consumption of its own. That simplicity matters in mission-critical oil and gas control rooms, where a panel cable failure can interrupt an entire machining or process sequence.

At 5 m, the cable spans the distance between the operator panel and its host cabinet without intermediate extensions. The assembly weighs approximately 0.15 kg, which keeps routing light and reduces strain on panel connectors during service work.

Key specifications at a glance

• Brand: FANUC
• Model: unit
• Series: FANUC CNC accessory (order code family A02B-0120)
• Function: Series 16 ON/OFF signal cable
• Cable length: 5 m
• Weight: ~0.15 kg
• Supply voltage: Not applicable (passive component; powered by host system)
• Power consumption: Not applicable (passive component; no independent power consumption)
• Operating temperature: Not applicable (passive component; rating follows host CNC)
• Storage temperature: Not applicable (passive component; rating follows host CNC)
• Relative humidity: Not applicable (passive component; rating follows host CNC)
• Dimensions (H×W×D): Not applicable (passive signal cable; no manufacturer-published outline dimensions)

Because the operating temperature, storage temperature and humidity limits follow the host CNC, the cable should be specified against the panel cabinet environment rather than as a standalone item. Similarly, the absence of a published outline dimension reflects the flexible nature of a signal cable rather than a missing rating.

Where this legacy signal cable fits in oil and gas operations

Series 16 CNC systems remain in service across valve manufacturing, pump and compressor component machining, and repair workshops that support upstream and midstream equipment. In these settings, the operator panel is the primary interface for cycle start, feed hold and emergency stop signals. A worn or damaged ON/OFF cable can therefore interrupt production or delay a maintenance window.

Keeping a spare unit on site supports planned panel servicing and reduces the risk of an unplanned stoppage while a replacement is sourced. The 5 m length suits cabinets where the operator panel sits at a distance from the control enclosure, and the passive design means no configuration or parameter entry is required during replacement.

For facilities running mixed CNC and industrial Ethernet equipment, the same maintenance team often handles both HMI replacement parts and industrial Ethernet switch replacement tasks. Sourcing these items from one supplier simplifies spares planning for legacy control generation assets.

Installation and maintenance guidance

Replacement is a mechanical task: isolate the host CNC, disconnect the existing cable at both ends, and route the new cable along the original path. Avoid sharp bends and keep the cable clear of heat sources and moving parts. Because the cable is passive, no voltage or current settings need adjustment after installation.

During routine panel inspections, check connector seating and inspect the cable jacket for abrasion or crushing. In oil and gas environments, cable condition should be reviewed whenever the surrounding cabinet is opened for other maintenance. Any cable showing damage should be replaced rather than repaired.

Please verify current lifecycle status and availability with PetroPartsOnline before ordering, as this is a legacy spare-part cable.

Frequently asked questions

What is the FANUC unit used for?

The FANUC unit is a 5 m ON/OFF signal cable for the FANUC Series 16 CNC operator panel family. It connects panel signals to the host CNC as a passive component.

Does This unit require a separate power supply?

No. This unit is a passive component powered by the host system, so supply voltage and power consumption are not applicable.

What is the operating temperature range of this signal cable?

This unit has no independent temperature rating; its operating temperature follows the host CNC. The same applies to storage temperature and relative humidity.

How long is the cable and how much does it weigh?

The cable measures 5 m and weighs approximately 0.15 kg. No manufacturer-published outline dimensions are available for this passive signal cable.

Is This unit compatible with other FANUC CNC series?

This unit is specified for the FANUC Series 16 CNC operator panel family. Contact PetroPartsOnline for parts suited to your application's requirements before specifying it for another control generation.

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