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AC Inverter FRENIC 5000P11 15 kW – FUJI FRN15P11S-2
The FRN15P11S-2 is a 15 kW AC variable frequency drive (VFD – “AC Variable Speed Drive”) belonging to the FRENIC 5000P11 series, manufactured by FUJI Electric and rated for the 200 V three-phase voltage class. The unit implements V/f control and, in advanced variants, sensorless vector control of three-phase induction motors. It is documented as a drive component in numerous CNC machining centres and industrial machines from the 1990s and 2000s equipped with FUJI P11-series inverters. The control connector is a standard multi-pin terminal strip compatible with the entire FRENIC 5000P11 product family.
The FRENIC 5000P11 inverter converts mains voltage to variable-frequency AC, enabling precise speed and torque control of the connected induction motor. In a CNC machining centre, its failure renders the controlled axis or spindle inoperative: production stops and no controlled movement is possible. Replacement with a different model requires full parameter reconfiguration and verification of analogue and digital control signal compatibility.
FUJI Electric is a Japanese manufacturer founded in 1923, a world leader in frequency converters, power equipment, and industrial automation systems. The FRENIC 5000P11 series was commercialised from the late 1990s; the model is now classified as legacy / discontinued and is no longer directly supported by the manufacturer: availability is limited to used stock, surplus parts, and specialist repair services.
Main Technical Specifications
| Type | AC variable frequency drive – VFD (Variable Frequency Drive) |
| Part number | FRN15P11S-2 (FRN15P11S2) |
| Brand | FUJI Electric |
| Known application | CNC machining centres and industrial machines from the 1990s–2000s fitted with FUJI P11-series drives; spindle and auxiliary axes |
| Function | Speed and torque control of three-phase induction motor via V/f modulation and sensorless vector control |
| Rated power | 15 kW |
| Input voltage | 3-phase 200–230 V AC ±10%, 50/60 Hz |
| Output voltage | 3-phase 0–240 V AC (proportional to input) |
| Rated output current | ~57–60 A |
| Output frequency | 0.1–120 Hz (configurable up to 400 Hz) |
| Voltage class | 200 V (series code “-2”) |
| Protection degree | IP20 (panel / enclosure mounting) |
| Interfaces / connectors | Multi-pin control terminal strip; analogue inputs ±10 V and 4–20 mA; opto-isolated digital I/O; three-phase power terminal block |
| Weight | ~15–22 kg |
| Dimensions | ~250–310 mm (W) × 420–500 mm (H) × 180–250 mm (D) |
| Production status | Legacy / discontinued — used / surplus / repair only |
1.5 kW General-Purpose Inverter – FUJI FRN1.5G9S-2
The FRN1.5G9S-2 is a variable frequency drive (VFD) (“Variable Frequency Drive”) from the FRENIC 5000G9S series by FUJI Electric, rated at 1.5 kW with a 200 V class three-phase input. The G9S designation identifies the ninth generation of the General Purpose series; the suffix “2” denotes the 200 V AC voltage class. The unit implements sinusoidal PWM modulation with V/f law and sensorless vector control, and is documented as a drive for three-phase induction motors in machine tool installations, conveyor lines, and CNC auxiliary systems. No significant hardware revisions are known for this power rating; no optional accessories are included as standard.
The inverter regulates the speed and torque of the electric motor by continuously varying the output frequency and voltage: it receives the speed reference from the CNC (analogue ±10 V or digital) and provides controlled acceleration/deceleration ramps, overcurrent protection, and overtemperature protection. A failed inverter causes the controlled motor to stop and prevents restart: on a CNC axis or spindle this results in an immediate machine halt, loss of production, and potential dimensional rejects on the workpiece in progress.
FUJI Electric is a Japanese industrial group founded in 1923, specialising in electric drives, power systems, and factory automation; the brand is globally recognised for the reliability of its inverters in industrial applications. The FRENIC 5000G9S series represents one of FUJI’s general-purpose inverter generations from the 1990s; current FUJI production focuses on the FRENIC-Ace and FRENIC-MEGA families. The FRN1.5G9S-2 belongs to a legacy / discontinued product family: available exclusively as used, NOS (New Old Stock), or through specialist repair services.
Main Technical Specifications
| Type | Variable Frequency Drive (VFD) – General Purpose |
| Part number | FRN1.5G9S-2 (FRN15G9S2) |
| Brand | FUJI Electric – FRENIC 5000G9S series |
| Known application | CNC machine tools, general industrial installations, auxiliary drives (pumps, fans, conveyors) |
| Function | Speed and torque control of three-phase induction motor via variable frequency and voltage |
| Rated power | 1.5 kW |
| Input voltage | Three-phase 200–240 V AC, 50/60 Hz (200 V class) |
| Output voltage/frequency | Three-phase 0–240 V AC, 0–400 Hz |
| Rated output current | ~8 A (typical for 1.5 kW / 200 V) |
| Control method | Sinusoidal PWM; V/f and sensorless vector control |
| Interfaces / inputs | Analogue reference ±10 V; multi-function digital inputs; relay output; RS-485 (optional) |
| Protection rating | IP20 (typical) |
| Weight | ~2.5–4.0 kg |
| Dimensions | ~140 × 260 × 160 mm W × H × D |
| Production status | Legacy / discontinued — used / NOS / repair only |