Description
🔧 A16B-2203-0652 — Description
A16B-2203-0652 is a FANUC internal PCB (power / wiring circuit board) used inside Alpha i spindle amplifier modules (aiSP series) in CNC machines.
📌 Full Technical Description
- Manufacturer: FANUC
- Part Number: A16B-2203-0652
- Type: Spindle amplifier power / wiring PCB
- Series: A16B-2203 (industrial PCB series)
- Application: Installed inside spindle drive (amplifier unit)
⚙️ Function (What it does)
- Acts as an internal power distribution and wiring board
- Supports:
- Power flow inside spindle amplifier
- Electrical connections between:
- Control PCB
- Power module
- Spindle motor output
- Ensures stable and reliable spindle drive operation
👉 In simple terms:
It is a core internal board of the spindle amplifier, not a standalone device.
🔍 Where it is used
- Found in FANUC Alpha i spindle amplifier modules (aiSP)
- Typically used in:
- 200V class spindle drives
- Power range approx. 2 kW to 15 kW
- Works together with:
- FANUC Alpha i power supply modules
- Servo amplifier systems (aiSV series)
🧩 Series relationship
Part of a group of similar boards:
- A16B-2203-0650
- A16B-2203-0651
- A16B-2203-0652
- A16B-2203-0653
👉 These are variant PCBs used in different spindle amplifier configurations.
⚠️ Important Notes
- ❗ Usually not supplied separately — replaced with full spindle module
- ❗ Must match:
- Amplifier model (e.g., A06B-xxxx series)
- Power rating and configuration
- ❗ Common failure cases:
- Burnt tracks/components
- Power section faults
- Short circuits
🏭 Typical Role in CNC System
CNC Control → Spindle Amplifier → (A16B-2203-0652 PCB inside) → Spindle Motor
👍 Summary
A16B-2203-0652 = FANUC spindle amplifier internal power/wiring PCB
➡️ Installed inside Alpha i spindle drive
➡️ Handles internal power distribution and connections
➡️ Used in small-to-medium power spindle systems