FANUC A06B-6220-H015#H600 — αiSP 15-B Spindle Amplifier Module | 74A Output, 200V Class

Part No.: A06B-6220-H015#H600 ▏Series Designation: αiSP 15-B ▏Type: Spindle Amplifier Module ▏Voltage Class: 200V Input Series ▏Condition: New Original

What This Module Is

The A06B-6220-H015#H600 is a single-spindle amplifier module from the FANUC αiSP-B (Alpha i Spindle, second-generation B-series) drive family. Its internal model designation is αiSP 15-B — the "15" referencing the spindle motor power class it is engineered to support, and the "-B" confirming it belongs to the later B-generation 6220 series introduced from 2017 onwards.

This unit is commonly described in the market as the AiSP-15 or SPM-15i. At its core it comprises two replaceable circuit boards: a spindle control PCB (A20B-2102-067x) and a power stage board (A17B-2000-0203). Both boards are housed within a single plug-in module chassis, which means either board can be independently sourced and replaced during a field repair without discarding the entire unit.

The #H600 suffix designates the 200V input voltage class, distinguishing it from the HV (high-voltage) variants in the A06B-6221 and A06B-6222 families that operate from 400V mains systems.

Technical Specifications

Compatible Spindle Motors

The αiSP 15-B is rated for a wide range of FANUC α-series and β-series spindle motors across multiple frame types. Verified compatible models include:

αi Integrated (αiI) Series

• αiI 8/8000 (Power Up model), αiI 12/8000, αiI 12/8000 (Power Up model)
• αiI 1.5/20000, αiI 8/10000 (Power Up model)
• αiI 8/12000, αiI 8/12000 (Power Up model), αiI 12/12000, αiI 12/12000 (Power Up model)

αi Integrated Integral-Mount (αiIP) Series

• αiIP 15/8000, αiIP 15/8000 (Power Up model)
• αiIP 18/8000, αiIP 18/8000 (Power Up model)

αi Through-Spindle Integrated (αiIT) Series

• αiIT 1.5/20000, αiIT 6/12000, αiIT 6/12000 (Power Up model)
• αiIT 8/12000, αiIT 8/12000 (Power Up model), αiIT 12/12000 (Power Up model)

βi Integrated Series (βiI / βiIP / βiIT)

• βiI 6/12000 (Power Up model), βiI 8/12000 (Power Up model)
• βiI 12/10000, βiI 12/10000 (Power Up model)
• βiIP 22/8000
• βiIT 12/10000, βiIT 12/10000 (Power Up model)

Motor-amplifier matching must account for the motor's continuous current demand falling within the amplifier's 74A rated output. Always cross-check against the applicable FANUC parameter sheet for the specific motor model before installation.

CNC System Compatibility

The αiSP 15-B communicates with the CNC controller via FANUC's FSSB (Fanuc Serial Servo Bus) fibre-optic interface. Confirmed compatible control platforms:

• FANUC Series 0i-MF+
• FANUC Series 31i-B
• FANUC Series 32i-B
• FANUC Series 35i-B
• FANUC Series 30i-B (broader FSSB-compatible systems)

Controllers from the older 16i/18i/21i or 0i-D generations use a different spindle amplifier architecture and are not compatible with this module.

A Note on PCB Versions

One detail that causes confusion in the field: there are two hardware versions of the A06B-6220-H015#H600 that share the same part number but carry different control PCBs. The B-generation unit manufactured from 2017 onwards uses the A20B-2102-067x control board, while earlier production units used a different PCB variant. These two variants are electrically incompatible with each other — mixing PCBs from different hardware generations will result in malfunction. When ordering replacement PCBs separately, confirm the exact board revision from the label on the installed module before purchasing.

Shared DC Bus Architecture

Like all αiSP-B series amplifiers, the A06B-6220-H015#H600 does not contain an internal AC-to-DC rectifier. It operates from the regulated DC bus provided by a companion αiPS-B power supply module (PSM), which handles mains rectification and regenerative energy recovery for the entire amplifier stack in the cabinet. The PSM must be rated to supply the combined peak demand of all connected spindle and servo axes simultaneously. Under-specifying the PSM is a common commissioning error that leads to DC bus undervoltage alarms during simultaneous high-load acceleration cycles.

Common Alarm Codes

Fan alarms are particularly common after extended service life. The internal fan (A90L-0001-0580/B) and external fan (A90L-0001-0576) are the highest-wear parts in this module and should be part of any scheduled preventive maintenance plan.

Part Number Cross-Reference

Shipping & Logistics

Dispatch lead time: Stock units are confirmed and dispatched within 1–2 business days of order placement.

Carriers: DHL Express · FedEx International Priority · UPS Worldwide Express · TNT · EMS — carrier assigned based on destination and urgency.

Delivery: Express services reach over 220 countries within 24–48 hours. Standard international transit is 3–7 business days depending on destination.

Packaging: Anti-static bag with dense foam padding inside a rigid carton; oversize or heavier assemblies use reinforced timber crates. All shipments include a full commercial invoice and packing list.

Import duties: Payable by the recipient according to the destination country's import regulations.

FAQ

Q1: What is the difference between the early-production A06B-6220-H015#H600 and the B-generation unit manufactured from 2017? Both carry the same FANUC part number but use different control PCBs inside. The B-generation unit (from 2017 onwards) houses the A20B-2102-067x spindle control board paired with the A17B-2000-0203 power board. The earlier variant used a different control PCB revision. Because the two versions are internally incompatible, individual PCBs cannot be swapped between them. If you are purchasing a replacement board rather than a complete module, confirm the board revision from the sticker on your installed unit first.

Q2: This module shows 62A input and 74A output — how can output exceed input current? The input figure (62A) refers to the DC bus draw from the PSM, expressed in DC amperes. The output figure (74A) is the peak AC current delivered to the spindle motor's stator windings. Because DC power equals voltage multiplied by current and the motor output is three-phase AC at a lower equivalent RMS voltage, the numbers are not directly comparable on a one-to-one basis. The relationship is governed by the inverter's switching efficiency and the power factor of the motor load — it is entirely normal and does not indicate a measurement error.

Q3: Can the A06B-6220-H015#H600 support C-axis or spindle orientation functions? Yes. The αiSP-B series supports spindle orientation (fixed-point stopping), Cs contouring (C-axis interpolation with feed control), and rigid tapping — provided the CNC controller has the corresponding option enabled and the spindle motor is fitted with a position coder or suitable encoder. The specific features available depend on the CNC software options purchased with the control system, not on any hardware limitation of this amplifier module.

Q4: My machine shows a C0 spindle alarm shortly after power-up. Does this mean the module is faulty? Not necessarily. C0/C1/C2 alarms indicate a break in the FSSB fibre-optic communication path between the CNC and the spindle amplifier — they do not specifically point to a failed output stage. First inspect both ends of the fibre-optic cable connecting the CNC optical port to the SPM: check for a cracked cable, a loose push-fit connector, or dust on the optical face. Contaminated connectors account for a high proportion of these alarms and can often be cleared by cleaning the connector with a dry lint-free swab and reseating it firmly.

Q5: Which power supply module (PSM) should be paired with the A06B-6220-H015#H600? The αiSP 15-B draws up to 62A from the shared DC bus at peak spindle load. The PSM must be selected so that its continuous DC output capacity covers the total combined peak demand of all servo axes and the spindle on the same bus, with a safety margin. Common companion PSM units for mid-frame machines include the αiPS 30-B and αiPS 45-B, but the correct choice depends on the total motor configuration of the machine. FANUC's amplifier selection documentation provides a load calculation worksheet for this purpose — always complete that calculation before specifying the PSM for a new installation or cabinet rebuild.