The FANUC A06B-6141-H045#H580 is a 200V-class αi Series spindle amplifier module, identified as model αi SP 45. It controls the speed, torque and current of a compatible FANUC spindle motor in CNC machine-tool applications.

This is the Type A version with one spindle-sensor input. Its documented rated output current is 198A. The amplifier receives DC-link power from a compatible FANUC αi power supply module and must be matched to the spindle motor, detector, CNC software and machine parameters.

A06B-6141-H045#H580 Product Information

αi SP 45 Spindle-Control Function

The A06B-6141-H045#H580 receives spindle commands from the FANUC CNC and regulates motor current, speed and torque through its IGBT power stage. The front status display supports alarm diagnosis, while the detector interface returns spindle-speed and orientation feedback to the control system.

Type A, Type B and HV Model Differences

A06B-6141-H045#H580 is the Type A, 200V-class αi SP 45. A06B-6142-H045#H580 is the related Type B version with two spindle-sensor inputs. A06B-6151-H045#H580 is the 400V-class αi SP 45HV model. These versions are not automatically interchangeable.

Replacement and Installation Checks

Confirm the complete model and #H580 suffix, Type A detector arrangement, power supply module, spindle motor, feedback sensor, DC-link rating, connectors and spindle parameters. Back up CNC and spindle data before replacement. Qualified personnel must isolate incoming power and wait for the DC bus to discharge before handling the amplifier.

Related resources: FANUC spindle and servo drives and FANUC spindle amplifier repair services.