A20B-0009-0320 Fanuc DC Servo drive Control board

Buy online your A20B-0009-0320 Fanuc Axis servo drive Control board reference A20B-0009-0320 from our US e-store Cnc-shopping USA, specialist in CNC machine-tools spare parts.

This FANUC drive board is a DC axis control PCB used in the FANUC 6047 series servo amplifier assembly. It handles the axis control interface between the CNC and the A06B-6047 DC Servo Unit, supporting command, feedback and drive logic so the axis can enable, track and hold position reliably. Commonly sourced as a replacement unit for legacy FANUC DC servo systems, it is a practical CNC replacement component for maintenance teams managing older machine tools.

Within the 6047 amplifier stack, this board processes the CNC’s command signals and feedback returns, working with the drive power stage to regulate the DC motor. In service, a faulty board often shows as axis alarms, no axis enable, erratic following, or unstable drive status on the 6047 unit. Swapping in a tested unit restores the drive’s control section and shortens troubleshooting on the production floor.

Compatibility is centered on FANUC A06B-6047 DC servo amplifiers. Technicians should confirm the exact board reference on the installed drive and match it to A20B-0009-0320 for a clean drop-in fit. This model is well known across legacy FANUC-controlled mills, lathes and grinders using DC servomotors, and remains widely used in repair and retrofit work where long-term machine support is required.

Reference: A20B-0009-0320

Manufacturer: FANUC

Product type: FANUC Drive board

Main function: DC axis control PCB for FANUC 6047 series servo amplifiers interfacing CNC commands and servo feedback

Applications: Legacy machine tools equipped with A06B-6047 DC servo units for milling, turning and grinding, field replacement and retrofit support

Key technical data: Made in Japan, fits the FANUC 6047 series servo stack, supplied as a tested spare part on FANUC CNC benches with servo motors, offered with warranty, commonly available for fast dispatch depending on inventory

On real shop floors this board is kept as a stocked spare to protect uptime on machines still running FANUC DC servos. When a drive fault traces back to the control section, a like-for-like swap with A20B-0009-0320 is a straightforward way to bring an axis back online while the defective unit goes for repair service. Many maintenance teams hold one per machine group to reduce unplanned downtime.

Each unit is bench-tested on FANUC CNC test rigs with servo motors by experienced engineers, then packed in ESD-safe packaging for industrial shipment. Includes warranty terms consistent with our service policy. Depending on availability, products are commonly dispatched from our Florida warehouse.

For older FANUC DC installations this board can serve as an emergency spare to keep equipment running. Cnc-shopping USA supports sourcing of obsolete parts, and refurbished unit, exchange service or repair service options may be available to extend the lifetime of your installed base.

Frequently asked questions about A20B-0009-0320:

How do I confirm that this board fits my A06B-6047 drive?
Check the reference on your installed control PCB and the drive’s nameplate. If the board label shows A20B-0009-0320 and the drive is a FANUC A06B-6047 series unit, the fit is typically correct. Contact us with photos for verification if needed.

What symptoms point to a failed control PCB in the 6047 amplifier?
Common signs include persistent drive alarms, axis not enabling, unstable axis behavior or loss of following despite a healthy power section and motor. Swapping in a known-good board is a fast way to isolate the fault.

Do you offer repair or exchange for the removed board?
Yes. Depending on condition and availability, repair service and exchange service can be arranged to speed up turnaround and maintain spare inventory on site.

Is any firmware loading required after replacement?
No user loading is typically required for this hardware reference. Install the correct board for the 6047 drive version and proceed with standard commissioning checks per your machine’s service documentation.