Within the A16B-2200 series, the 025x range is positioned in the axis control board zone. eBay confirms A16B-2200-0250 (immediately preceding) as a "4 AXIS CONTROL BOARD" for S&R Machinery Sales at — categorised as a Japan-manufactured CNC control PCB.
The A16B-2200-0251 at position 0251 — directly adjacent to the confirmed 4-axis control board — occupies the same functional zone. Within the A16B-2200 series, boards in close numerical proximity consistently serve related functions. Based on the confirmed 025x axis control context, A16B-2200-0251 is consistent with an axis control or axis interface function within the Series 0-C/16/18 CNC platform.
| Parameter | Value |
|---|---|
| Part Number | A16B-2200-0251 |
| Series | A16B-2200 |
| Range | 025x |
| Adjacent | A16B-2200-0250 (4 Axis Control Board) |
| Manufacturer | FANUC Corporation |
The broader A16B-2200 series axis control board progression confirmed across this session:
| Board | Function | Notes |
|---|---|---|
| A16B-2200-0220 | 3/4-axis 16-bit | Series 0-C |
| A16B-2200-0250 | 4 Axis Control Board | Confirmed, eBay |
| A16B-2200-0251 | 025x range | This product |
| A16B-2200-0330 | 16-bit 5th/6th axis (0-C/0-D) | fanuc-controller.com |
| A16B-2200-0370 | 32-bit 5th/6th axis (Zero-C) | Confirmed (this session) |
| A16B-2200-0381 | 7th axis (0-C/0-D) | fanuc-controller.com |
| A16B-2200-0391 | 2-axis serial pulse coder (0-C) | Confirmed (this session) |
The 025x range falls between the 16-bit axis control range (022x) and the 5th/6th axis expansion range (033x), placing it in the transitional axis control zone of the A16B-2200 series.
Axis control board fault: A FANUC CNC develops servo alarms on specific axes. The A16B-2200-0251 is identified from its board label. Replacement restores the servo axis control function.
CNC maintenance spare: A production facility maintaining FANUC CNC systems stocks A16B-2200-0251 for the specific machine in which it is deployed.
Q1: How do I confirm A16B-2200-0251 is the correct board for my CNC?
Read the part number from the installed board's label. If it reads A16B-2200-0251, this is the confirmed replacement. Cross-reference with the applicable FANUC CNC maintenance manual's spare parts table for the specific system model.
Q2: Is A16B-2200-0251 related to A16B-2200-0250 (4 Axis Control Board)?
The two boards are adjacent in the A16B-2200-025x range. Whether A16B-2200-0251 is a variant of the same board, a companion board in the same axis control system, or a separate board with a different function is confirmed from the installed board's label and the applicable system documentation.
Q3: What CNC systems use the A16B-2200-025x axis control boards?
The A16B-2200 axis control board range spans Series 0-C and the first-generation Series 16/18/21 CNC platforms — confirmed throughout this session. The 025x position, adjacent to the 4-axis control board, suggests compatibility with the same CNC platform family. Confirm from the specific system documentation.
Q4: Does replacing A16B-2200-0251 require servo parameter changes?
No. Servo parameters reside in the CNC's main SRAM. Replacing an axis control board does not affect stored servo parameters. After fitting the replacement, the CNC re-establishes servo communication and applies existing parameters.
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