Fanuc Psm Wiring A16B-2203-0662 A16B22030662 A16B-22O3-O662

A16B-2203-0662 | FANUC αis SVM1-160i Servo Wiring Board — A06B-6114-H106 / 160A Peak / Control PCB A20B-2100-0740

SVM1-160i — The High-Current Single-Axis Module

The FANUC αis SVM1-160i (A06B-6114-H106) represents the second-highest current rating in the αis single-axis servo amplifier range — 160A peak servo output for driving large-frame servo motors on heavy machine tool axes.

For context, the complete αis SVM1 range scales from SVM1-20i (20A) through SVM1-360i (360A). The 160A of the SVM1-160i places it in the heavy-duty region — machines selecting this module include:

Large horizontal machining centres: X and Y axes with substantial table mass, requiring high peak torque for rapid traverse acceleration.

Heavy-duty rotary tables: Positioning systems for large pallet changers or multi-face fixtures where the pallet assembly mass demands sustained high servo current.

Large grinding machine axes: Where precision positioning under significant grinding force requires both high current and high servo stiffness.

The A16B-2203-0662 is the wiring board for this 160A module — providing all the high-current connection hardware inside the SVM1-160i housing.

Key Specifications

αis SVM1 Wiring Board Family — Matching Boards to Current Ratings

Each current rating in the αis SVM1 range uses a specific wiring board, while the control PCB may be shared across ratings:

The 160A rating of the SVM1-160i requires IGBT devices, bus conductors, and current sensors physically larger than those in the 40A or 80A modules — which is why the wiring board (A16B-2203-0662) is a distinct part number from its lower-current siblings.

Application Scenarios

SVM1-160i servo wiring board fault: A FANUC αis SVM1-160i module (A06B-6114-H106) develops a fault traced to the wiring board — an IGBT gate connection failure that interrupts the drive's output on one phase. The A16B-2203-0662 is replaced, restoring correct three-phase servo output.

Heavy axis servo drive maintenance: A large horizontal machining centre's heavy X-axis servo module undergoes scheduled maintenance. The wiring board A16B-2203-0662 is replaced alongside the control board A20B-2100-0740 as a complete internal board set renewal.

FAQ

Q1: Is A16B-2203-0662 specific to the SVM1-160i, or does it cover other αis SVM1 ratings?

A16B-2203-0662 is the specific wiring board for SVM1-160i (A06B-6114-H106) only. The FANUC αis maintenance manual (B-65285EN/03) confirms each current rating uses its own wiring board — 0660 for 40i, 0661 for 80i, 0662 for 160i, 0625 for 360i. These boards are not interchangeable between ratings.

Q2: What is the control PCB that pairs with A16B-2203-0662?

The FANUC αis maintenance manual confirms: SVM1-160i (A06B-6114-H106) uses wiring board A16B-2203-0662 and control PCB A20B-2100-0740. The A20B-2100-0740 is common to both the SVM1-160i, providing HRV current control and FSSB interface for this 160A module.

Q3: What discharge safety applies before accessing A16B-2203-0662 inside the SVM1-160i?

The SVM1-160i contains a larger capacitor bank than smaller SVM1 variants, due to its higher power rating. More energy is stored in the DC bus at the same bus voltage. Follow the FANUC maintenance manual's prescribed discharge wait time and verify with a calibrated DC voltmeter before opening the module housing.

Q4: Does replacing A16B-2203-0662 require servo axis parameter re-entry?

No. Servo parameters (motor ID, encoder type, gains, current limits) reside in the CNC's main parameter memory. Replacing the wiring board does not affect any stored parameter. After fitting the replacement and restoring the module, the CNC re-establishes FSSB servo communication and applies the existing parameters for the 160A axis.

Q5: Is A16B-2203-0662 used only in the αis series, or also in the standard αi (non-S) series?

The A16B-2203-0662 is confirmed for the αis series SVM1-160i (A06B-6114-H106). The standard αi SVM1 series (A06B-6096-H105 for SVM1-80 at 80A as the largest standard SVM1) tops out at 80A — there is no standard αi SVM1-160i. The 160i designation is exclusive to the αis enhanced series. A16B-2203-0662 is therefore αis-specific.