Description
🔎 FANUC A06B‑6127‑C256 – What It Is
A06B‑6127‑C256 is not a standalone hardware part you buy or install on its own — it’s a unit specification / internal designation code used in FANUC service manuals and parts lists. It corresponds to the internal wiring/assembly specification of a specific FANUC servo amplifier module in the A06B‑6127 family.
In FANUC documentation:
- H‑codes (like A06B‑6127‑H256) are the actual servo amplifier modules you order and install in a CNC machine.
- C‑codes (like A06B‑6127‑C256) are the internal unit specification codes used in electronics drawings, parts breakdowns, and manuals to identify the specific configuration of that module.
So:
📌 A06B‑6127‑C256 = the internal specification code for the servo amplifier module whose order part number is A06B‑6127‑H256.
🧩 What the Corresponding Amplifier Is
The matching “H‑part” for C256 is:
A06B‑6127‑H256
- A dual‑axis servo amplifier module in FANUC’s Alpha iSV (αi) series.
- Typically described as a high‑voltage servo drive (AiSV‑20/40HVL).
- Designed to control two servo motors simultaneously, with different rated capacities on each axis for balanced yet powerful motion control.
This amplifier:
- Converts mains AC power into precise servo drive outputs.
- Controls position, speed, and torque of two CNC axes.
- Interfaces with the CNC controller via FANUC’s FSSB (serial servo bus).
⚡ In simple terms:
It is the power + motion driver that makes two axes in a CNC machine move exactly as programmed.
🧠Why There Are Both “C” and “H” Codes
FANUC uses two naming conventions:
- “H” (Order Specification): Identifies the physical servo amplifier unit (used for purchasing, repair, replacement).
- “C” (Unit Specification): Identifies the internal wiring/assembly version of that amplifier in schematics, manuals, and parts diagrams.
They refer to the same physical module — just from different contexts:
- You order H‑codes (e.g., H256).
- Manuals refer to C‑codes (e.g., C256).
âś… Summary
A06B‑6127‑C256
➡️ Internal unit specification/designation used in FANUC docs
➡️ Corresponds to A06B‑6127‑H256 — a dual‑axis high‑voltage servo amplifier
➡️ Used for CNC motion control (two axes, precise motion and power output)