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Azionamento FRENIC 5000MS5 FUJI
Brand: FUJI -
Code:FRN3. 7M5-2
| Combination name | Availability | Price |
|---|---|---|
Spindle Inverter Drive 3.7 kW – Fuji Electric FRN3. 7M5-2
The FRN3. 7M5-2 is a 3.7 kW CNC spindle inverter drive (“Spindle Inverter Drive”) from the FRENIC 5000MS5 series, manufactured by Fuji Electric. Designed specifically for variable-speed spindle control in CNC machine tools (vertical and horizontal machining centres, CNC lathes, milling machines), the drive converts three-phase mains voltage into variable-frequency, variable-voltage output to control spindle motor speed and torque. It incorporates features dedicated to machine tool requirements: spindle orientation for automatic tool change, C-axis mode, and DC braking. Available in multiple power ratings within the same MS5 family.
The FRENIC 5000MS5 spindle inverter drive is the electronic unit that converts three-phase mains power into variable frequency and voltage to govern spindle motor speed and torque throughout every phase of the machining cycle. It manages critical functions including spindle orientation for automatic tool changers, closed-loop control via encoder feedback, and rapid braking on stop. A failure of this unit renders the spindle completely uncontrollable, halting production and requiring immediate specialist intervention.
Fuji Electric Co., Ltd. is a Japanese industrial group founded in 1923 and one of the world’s leading manufacturers of industrial inverters, electric drives and automation systems. The FRENIC 5000MS5 series was dedicated specifically to the CNC machine tool industry and is today legacy / discontinued, superseded by newer lines such as FRENIC-Ace and FRENIC-MEGA; spares are available only as used units, surplus stock or through specialist repair services.
Main Technical Specifications
| Type | CNC spindle inverter drive (Spindle Inverter Drive) |
| Part number | FRN3. 7M5-2 (FRN37M52) |
| Brand | Fuji Electric |
| Series | FRENIC 5000MS5 |
| Known application | CNC machining centres, CNC lathes and milling machines with variable-speed spindle |
| Function | Spindle motor speed and torque control; spindle orientation; C-axis mode; DC braking |
| Rated output power | 3.7 kW |
| Input voltage | 3-phase 200–220 V AC, 50/60 Hz (200 V class) |
| Output frequency | 0–400 Hz (typical for spindle drives) |
| Output voltage | 0–200 V three-phase variable (PWM) |
| Feedback | Incremental encoder / tachogenerator from spindle motor |
| Interfaces / connectors | Multi-function control terminal strip; encoder connector; power terminals R/S/T – U/V/W |
| Weight | ~3–6 kg |
| Dimensions | ~200×300×150 mm |
| Production status | Legacy / discontinued — used/surplus/repair only |
