A16B-2200-0300 Fanuc PCB Board A16B22000300 AI6B-22OO-O3OO

A16B-2200-0300 | FANUC 2-Axis PCB with Weld Control — RG2 and RH Robot / A16B-2200-030x Welding Axis Family

Two Functions in One PCB — Axis Control and Weld Control

The A16B-2200-0300 integrates two distinct capabilities for welding robot applications: 2-axis servo control: Provides servo axis control for 2 of the robot's joints. In welding robot configurations, axes are managed across multiple boards — the A16B-2200-0300 handles two specific joints within the robot's full axis complement.

Weld control: Welding robots do more than position their torch — they also control the welding process: arc start, wire feed, shielding gas, weld current, voltage, and travel speed synchronisation with robot motion. The weld control function on this board provides the interface between the robot controller and the welding power source, managing the welding process signals alongside the motion commands. Combining axis and weld control on one PCB serves the specialised architecture of the RG2 and RH welding robot controllers — hardware integration reduces the total board count and simplifies the signal routing within the robot cabinet.

Key Product Information

FANUC RG2 and RH — Welding Robot Platforms

FANUC RG2: A FANUC compact robot designed for arc welding, gluing, sealing, and related continuous path applications. The RG2 controller used A16B-series PCBs for its axis and welding control hardware.

FANUC RH (Robot Horizontal): FANUC's horizontal arm robot series, designed for material handling and assembly applications. The RH series also appeared in welding configurations, where the weld control PCB was integrated alongside the axis control hardware. Both robot types shared the A16B-2200-0300's combined axis + weld control architecture — allowing the robot's motion and welding process control to be managed from a single, integrated PCB.

Application Scenarios

RG2 robot welding axis board fault: A FANUC RG2 arc welding robot develops axis faults on specific joints, or welding process control signals fail. The A16B-2200-0300 is identified from the robot controller's board label. Replacement restores both axis servo function and welding process control.

RH robot welding system refurbishment: An RH welding robot undergoes controller refurbishment. The A16B-2200-0300 is replaced as part of a comprehensive axis and weld control board renewal.

FAQ

Q1: What specific axes does A16B-2200-0300 control on the RG2 or RH robot?

The specific axis assignments (which of the robot's joints are served by this board) are confirmed from the specific robot model's controller documentation. In the A16B-2200 series, axis control boards are assigned to defined axis pairs — the applicable robot maintenance manual identifies which joints connect to A16B-2200-0300.

Q2: What welding process does the weld control function on A16B-2200-0300 support?

FANUC welding robots of the RG2/RH era primarily supported MIG/MAG arc welding (wire feed, gas shielded). The weld control interface manages the communication between the robot controller and a compatible welding power source — controlling arc start, wire feed speed, welding current/voltage settings, and synchronising torch movement with the welding process.

Q3: Is A16B-2200-0300 interchangeable with A16B-2200-0301 (RH Robot Welding Axis PCB)?

No. A16B-2200-0300 provides 2-axis servo control plus weld control for both RG2 and RH robots. A16B-2200-0301 is described specifically as the RH robot welding axis PCB — a different board in the same 030x welding axis family. They are not directly interchangeable. Confirm the correct board from the installed unit's label and the applicable robot controller documentation.

Q4: Does replacing A16B-2200-0300 require robot programme backup?

Robot programmes reside in the controller's main CPU memory — not in the axis/weld control board. Replacing A16B-2200-0300 does not affect stored robot programmes. However, always perform a full programme backup before any controller board maintenance as a precautionary measure.