Used FANUC Board A16B-2203-0815 A16B22030815 A16B-22O3-O815

A16B-2203-0815 | FANUC A16B-2203 Series CNC Drive PCB — 081x Drive Board Range / Industrial Automation / Servo and Spindle Systems

A16B-2203-081x — Drive Board Range

The A16B-2203-081x number group is a defined section of the A16B-2203 series focused on drive system PCBs. The adjacent boards in this range confirm the functional category:

A16B-2203-0810: Confirmed as "PCB — ALPHA-I SERVO SVM2-20/20HVi" — a wiring board for the 400VAC High Voltage (HV) dual-axis servo module, serving machines in 400V supply regions.

A16B-2203-0800–0803: From the FANUC αis Maintenance Manual (B-65285EN/03), these are wiring boards for the αis SVM1 HV series:

• 0800: SVM1-20HVi (A06B-6124-H103)
• 0801: SVM1-40HVi (A06B-6124-H104)
• 0802: SVM1-80HVi (A06B-6124-H105)
• 0803: SVM1-10HVi (A06B-6124-H102)

The A16B-2203-0815 occupies the 0815 position in this range — placing it within the 400VAC High Voltage servo drive PCB family that includes the 0800–0803 SVM1 HV wiring boards and the 0810 SVM2 HV board.

Key Product Information

High Voltage Drive Context — 400V Region Applications

Machines installed in regions with 400–480VAC three-phase supply require High Voltage (HV) servo drive variants. The HV series amplifiers handle this directly from the mains supply without a separate step-down transformer.

The entire A16B-2203-080x through 081x range corresponds to this HV drive category:

• The SVM1 HV wiring boards (0800–0803) serve single-axis HV modules
• The SVM2 HV board (0810) serves dual-axis HV modules
• The A16B-2203-0815 serves its specific HV servo amplifier configuration

This HV range is the most common servo drive configuration in European, Asian, and most export-market CNC machine tools — any machine tool sold to a 400V supply region uses HV-class servo drives.

Application Scenarios

HV servo drive PCB fault: A CNC machine on a 400V supply network develops a servo alarm on the axis controlled by the module containing A16B-2203-0815. After ruling out external wiring and motor faults, the board is identified and replaced.

Drive module overhaul: A specialist CNC service workshop overhauling an HV servo amplifier module replaces the A16B-2203-0815 as part of a comprehensive internal board renewal.

FAQ

Q1: How do I confirm A16B-2203-0815 is the correct board for my HV drive module?

Read the part number from the board label inside the specific module. If it reads A16B-2203-0815, this confirms the correct replacement. Cross-reference against the spare parts table in the FANUC maintenance manual for the host drive module model.

Q2: Is A16B-2203-0815 for 400V supply machines or 200V supply machines?

Based on the 081x range context — which includes confirmed HV series wiring boards (A16B-2203-0800–0803 for SVM1 HVi and A16B-2203-0810 for SVM2-20/20HVi) — the A16B-2203-0815 is likely a High Voltage (400–480VAC) drive board. Confirm from the host module's nameplate voltage rating before ordering.

Q3: Does replacing A16B-2203-0815 affect servo parameters?

No. Servo parameters reside in the CNC's main memory. Replacing the drive PCB does not affect any stored parameter values. After fitting the replacement, the CNC restores servo communication and applies existing parameters normally.

Q4: What discharge safety applies before accessing A16B-2203-0815 inside an HV drive module?

HV series servo modules operating on 400–480VAC input maintain a DC bus at approximately 540–650VDC. After mains power removal, the discharge time per the FANUC maintenance manual must be fully observed. Verify bus discharge with a calibrated voltmeter before opening the module. HV bus energy is significantly higher than 200V modules — more capacitance, higher voltage, more stored energy.