A06B-6120-H075 is an αi PSM-75HVi high voltage power supply module belonging to FANUC Alpha i series. It supplies stable DC bus power for servo and spindle amplifiers, equipped with built-in regenerative function and comprehensive protective design for heavy duty long-term industrial operation.

Part number is A06B-6120-H075, model type αi PSM-75HVi power supply module. Manufactured by FANUC, applied to 400V to 480V AC high power servo and spindle drive systems of CNC equipment.

Three phase input voltage ranges from 400V AC to 480V AC with frequency 50Hz and 60Hz. Rated input current is 154 ampere at 400V. Maximum input power reaches 75 kilowatt. DC bus output voltage maintains between 565V DC and 679V DC, continuous rated output power is 82 kilowatt. Integrated regenerative circuit feeds braking energy back to power grid without external braking resistor for standard working conditions. Control power adopts external 24V DC power supply with tolerance within plus and minus ten percent.

Adopts rugged metal housing with yellow front panel and vertical cabinet mounting structure. Overall dimension width 220 millimeter, height 380 millimeter, depth 272 millimeter. Unit weight is approximately 21.5 kilogram. Cooling system consists of replaceable axial flow fan and high efficiency heat sink. Operating temperature scope covers 0 degree Celsius to 55 degree Celsius, storage temperature ranges from minus 20 degree Celsius to 70 degree Celsius. Working humidity is 5 percent to 95 percent relative humidity without condensation. Anti-vibration capacity is 0.5 gravity within 10Hz to 500Hz frequency band.

Matches 400V class αi SVM servo amplifiers and αi SPM spindle amplifiers. Compatible with FANUC 30i, 31i, 32i-B and 0i-MF, 0i-TF CNC systems with 400V power option. Supports FSSB fiber serial servo bus communication and daisy chain wiring connection mode.

Built-in overcurrent protection responds main circuit overload and short circuit with alarm code AL-01. DC bus undervoltage and overvoltage monitoring triggers alarm AL-04 and AL-07 separately. Heat sink overheat protection generates alarm AL-03. Fan abnormal detection outputs alarm AL-02. Input phase loss protection and regenerative overload protection are equipped with corresponding fault codes. Front panel LED indicators display power status, communication link and alarm information in real time.

Cut off total system power and execute safety locking procedure before operation. Fix the module vertically on cabinet board with standard fasteners and reserve sufficient ventilation space on upper and lower sides. Connect three phase AC power input terminals and reliable protective grounding. Link DC bus terminals to rear stage servo and spindle amplifiers. Wire 24V control power and FSSB optical fiber cable according to standard definition. Inspect all wiring tightness and correctness before power restoration, then check running status and eliminate existing alarms.

High voltage exists inside the module, keep waiting for more than ten minutes after power shutdown before opening shell maintenance. Only certified professional electricians are allowed to conduct installation, wiring and daily maintenance work. Apply original FANUC matched cables and connectors to avoid equipment damage and safety hazard. Guarantee smooth heat dissipation environment to prevent overheating failure. Regularly clean fan and heat sink dust, replace defective cooling components timely.

Large power output meets requirements of multi-axis heavy load machining equipment. Energy regenerative design lowers power consumption and heat emission. Compact vertical layout saves internal cabinet installation space. High speed FSSB optical communication ensures stable data transmission. Multiple safety protection functions effectively reduce unexpected downtime.