A06B-6079-H104 Fanuc Servo Amplifier Module Alpha SVM 1-40L

Buy online your A06B-6079-H104 Fanuc Servo Amplifier Module Alpha SVM 1-40L reference A06B-6079-H104 from our US e-store Cnc-shopping USA, specialist in CNC machine-tools spare parts.

This FANUC alpha SVM1-40L single-axis servo amplifier is a core drive module in the FANUC 6079/6080 alpha platform, providing controlled power to an axis motor within CNC machines. It serves as a reliable replacement unit or refurbished unit for aging or faulty amplifiers in FANUC alpha systems, supporting quick field replacement to restore machine uptime.

Engineered for the FANUC alpha AC servo family, the module operates on the DC link supplied by the alpha power supply and delivers stable current to the motor with PWM Interface Type A/B control. Typical use includes axis control on machining centers and turning machines using alpha motors such as Alpha 3/3000 (A06B-0123-Bxxx) and Alpha 6 (A06B-0127-Bxx). Its design supports dependable axis performance with integrated braking control and built-in alarm diagnostics.

On the electrical side, the unit accepts a DC link around 283–325 V from the alpha power module and provides up to 12.5 A output, suitable for the motor sizes listed above. The drive’s rated power is about 3.75 kW, giving adequate overhead for standard contouring and rapid moves when paired correctly. Alarm indications cover fan monitoring, control power level, DC link condition, regenerative circuit, dynamic brake, and overcurrent/IPM events, which helps maintenance teams pinpoint faults rapidly.

In the field, this amplifier is commonly selected to replace a failed SVM1-40L channel showing alarms like internal fan stop, low control power, low DC link voltage, discharge circuit faults, or axis overcurrent. The module’s footprint and connections align with the alpha rack environment, allowing a practical drop-in replacement when the model and motor pairing match. Technicians typically keep one in spare inventory to reduce unplanned downtime on FANUC-equipped machines.

Reference: A06B-6079-H104

Manufacturer: FANUC

Product type: FANUC Servo Drive 6079 alpha series

Main function: Single-axis alpha servo amplifier supplying controlled DC link power to a FANUC AC servo motor via PWM interface

Applications: Axis control on CNC lathes and machining centers using FANUC alpha motors; suitable for field replacement, retrofits and stocked spares

Key technical data: Input DC link approx. 283–325 V, output current 12.5 A, power rating 3.75 kW, PWM Interface Type A/B, compatible with Alpha 3/3000 and Alpha 6 motors, integrated dynamic brake and regenerative control with alarm reporting for fan, voltage, discharge circuit, DB relay, overcurrent and IPM events

For maintenance planning, match the amplifier to the installed motor type and confirm the interface variant before installation. When replacing a unit that raised alarms 1 through 9 or the dot variants, check the motor and power supply health in parallel to avoid repeat failures. Keeping this model as a tested unit in plant stock supports faster repair turnaround and sustained machine uptime.

Each amplifier is bench-tested by skilled engineers on dedicated FANUC CNC simulators with real alpha servo motors under full-speed and load to verify current delivery, braking control and alarm behavior. Units are professionally packed for industrial shipping, and a warranty is included. Many stocked items ship directly from our Florida facility depending on availability.

This model is frequently requested as an emergency spare for legacy FANUC alpha installations. Cnc-shopping USA supports repair service, exchange service and sourcing of obsolete parts to keep older machines productive and to stabilize long-term maintenance plans.

Frequently asked questions about A06B-6079-H104:

Which motors are confirmed with this SVM1-40L module?
It is commonly paired with Alpha 3/3000 (A06B-0123-Bxxx) and Alpha 6 (A06B-0127-Bxx). Always verify the motor nameplate and CNC parameter set to confirm the pairing before commissioning a replacement unit.

What does the PWM Interface Type A/B mean for integration?
The interface defines the command and feedback style expected by the amplifier within the alpha system. Select the version that matches the existing axis channel to maintain correct communication with the CNC and the motor.

What are the key electrical ratings to check before replacement?
Confirm the DC link supply around 283–325 V, ensure the 12.5 A output capacity aligns with the motor, and verify the braking and regeneration connections. Proper grounding and heat management must be preserved as per FANUC guidelines.

How should I interpret the alarm list on this drive?
Alarms cover fan stop, low control power, low DC link, discharge circuit faults, over-regeneration, dynamic brake relay, and overcurrent/IPM conditions for L and M channels. Use these codes to narrow down whether the fault is in the amplifier, power section or the connected motor.

Is this a suitable drop-in replacement for a failed axis amplifier?
Yes, when the part number and interface match and the motor pairing is correct, it serves as a practical drop-in replacement. Inspect the power supply module, motor insulation and cooling fans during the swap to prevent recurring faults.