What the A02B-0120-K810 Cable Solves in a Legacy Control Loop
The FANUC A02B-0120-K810 is a JS1A/JS1B servo command signal cable for the FANUC Series 16 CNC. It carries command and MDI signals between the control and servo hardware, and its passive design draws no independent power from the cabinet.
Legacy Series 16 machines remain in production because the mechanical platform is sound. The weak point is often the signal path. A degraded servo command cable can introduce intermittent faults that look like drive or encoder failures. This cable restores the exact signal route the control expects, with engineering-grade precision in every conductor and connector.

Key Specifications and Signal Path Design
- Model: unit, a JS1A/JS1B servo command signal cable.
- Series: FANUC Series 16 CNC control generation.
- Weight: ~0.15 kg, consistent with the typical FANUC signal cable family.
- Supply voltage: Not applicable; the cable is powered by the host system.
- Power consumption: Not applicable; no independent power draw.
- Operating temperature: Not applicable; the rating follows the host CNC.
- Dimensions: Not applicable; no manufacturer-published outline dimensions.
Because This unit is passive, its electrical behavior is defined by the host CNC and the connected servo hardware. That makes conductor integrity and connector fit the critical parameters. The ~0.15 kg weight reflects a shielded signal cable assembly built for cabinet routing.
Where the JS1A/JS1B Cable Fits on the Machine
Series 16 CNC systems appear in machining centers, lathes, and other production equipment where servo command signals must travel reliably from control to drive. In these installations, This unit routes JS1A/JS1B command and MDI signals through the cabinet. When a machine shows position drift or intermittent servo alarms, technicians often trace the fault to cable damage rather than the drive itself. Replacing the signal cable restores a clean command path. For legacy platforms, keeping a verified spare on hand reduces diagnostic downtime.

Installation and Routing Practice
Route the cable along the original path and respect the minimum bend radius of the host cabinet. Keep signal conductors separated from high-power motor leads to limit induced noise. Secure connectors fully and verify pin engagement before power-up. Because the cable is passive, no parameter configuration is required for the cable itself. Always follow the FANUC Series 16 maintenance manual for cabinet access and safety procedures.
Reliability and Lifecycle Considerations
Inspect the cable periodically for abrasion, connector corrosion, and shield damage. In high-vibration environments, check tie-down points and strain relief. This unit belongs to a legacy control generation, so availability should be confirmed before scheduling a replacement. Please verify current lifecycle status and availability with AutoDCSTech before ordering. Contact AutoDCSTech with your exact requirements for precise matching.
Availability & Condition at AutoDCSTech
| Part Number | A02B-0120-K810 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | Japan |
