Motor rating3 HP
Input supplyThree-phase, 200 to 240 V
Rated output current12.0 A
EnclosureIP20, UL open type
Braking transistorBuilt-in
CommunicationRS-485 Modbus RTU
The Fuji Electric FRN0012C2S-2U is a FRENIC-Mini (C2) compact variable frequency drive rated 3 HP with a three-phase, 200 to 240 v, 50/60 hz and a rated output current of 12.0 A.
The FRN0012C2S-2U drives a 3 HP four-pole standard motor from a Three-phase, 200 to 240 V, 50/60 Hz supply. Control is by V/f, slip compensation, automatic torque boost or dynamic torque vector control, with an automatic energy-saving function and a process PID regulator built in. Frequency is set from the built-in volume, a 0 to +10 V DC or 4 to 20 mA DC analog input, the keypad, 16 preset steps or RS-485.
Best for
- Conveyors, fans, pumps, centrifugal separators and food processing machines
- Panels where depth matters: the frame measures 110 x 130 x 139 mm (4.33 x 5.12 x 5.47 inches) W x H x D
- Loads that need fast stopping: the braking transistor is built in for an external braking resistor
Warranty
3-year standard warranty from the shipping date for product installed in the USA. Product installed outside the USA carries a 2-year warranty.
Key features
Dynamic torque vector control
Delivers 150% or more starting torque running at 1 Hz with slip compensation and auto torque boost active, for conveyors and high-inertia loads.
RS-485 built in
RJ-45 connector on the unit with Modbus RTU, Fuji dedicated inverter protocol, dedicated keypad protocol and SX protocol for PC loader, plus a terminator ON/OFF switch.
Process PID regulator
Controls temperature, pressure or flow without an external controller, with a low liquid level stop function and integration reset and hold.
Sensorless synchronous motor drive
Sensorless magnetic positioning drives a synchronous motor over a speed control range of 10% of base frequency and up, on ROM version 0500 or later.
16-speed operation
Sixteen preset frequencies are selected from the five programmable digital inputs using SS1, SS2, SS4 and SS8.
Cooling fan ON/OFF control
The cooling fan switches off when the fan or pump is not running, cutting noise and energy use.
Technical specifications
| Inverter type | FRN0012C2S-2U |
| Series | FRENIC-Mini (C2), standard model |
| Nominal applied motor | 3 HP (Fuji four-pole standard motor) |
| Rated capacity | 4.5 kVA |
| Input phases, voltage, frequency | Three-phase, 200 to 240 V, 50/60 Hz |
| Voltage and frequency variation | Voltage: +10 to -15% (voltage unbalance 2% or less), Frequency: +5 to -5% |
| Rated output voltage | Three-phase 200 to 240 V (with AVR) |
| Output voltage setting range | 80 to 240 V settable at base frequency and at maximum output frequency |
| Rated output current | 12.0 A |
| Derated continuous current | 10.0 A |
| Derating condition | Continuous operating current must be held to this value or less when the carrier frequency is set to 3 kHz or above, or ambient temperature exceeds 40°C (104°F) |
| Overload capability | 150% of rated current for 1 min; 150% of rated current for 1 min or 200% of rated current for 0.5 s when the rated current in parentheses applies |
| Rated frequency | 50, 60 Hz |
| Input rated current with DC reactor | 8.3 A |
| Input rated current without DC reactor | 13.2 A |
| Required power supply capacity | 2.9 kVA (with DC reactor) |
| Braking torque | 30% average braking torque decelerating from 60 Hz with AVR control OFF |
| Braking transistor | Built-in |
| Cooling method | Fan cooling |
| Weight / mass | 1.7 kg (3.7 lbs) |
| External dimensions | 110 x 130 x 139 mm (4.33 x 5.12 x 5.47 inches) W x H x D |
| Enclosure | IP20 (IEC 60529:1989), UL open type (UL50) |
| Applicable safety standards | UL508C, EN 61800-5-1:2007 |
| Maximum frequency | 25 to 400 Hz |
| Base frequency | 25 to 400 Hz |
| Starting frequency | 0.1 to 60.0 Hz |
| Carrier frequency | 0.75 to 16 kHz |
| Frequency setting resolution | Analog 1/1000 of maximum frequency; keypad 0.01 Hz at 99.99 Hz or less, 0.1 Hz from 100.0 to 400.0 Hz; link 1/20000 of maximum frequency or 0.01 Hz fixed |
| Frequency accuracy | Analog within ± 2% at 25°C (77°F); keypad within ± 0.01% at 25°C (77°F) |
| Control method (induction motor) | V/f control, slip compensation, automatic torque boost, dynamic torque vector control, automatic energy-saving function |
| Control method (synchronous motor) | Sensorless magnetic positioning, speed control range 10% of base frequency and up (ROM version 0500 or later) |
| Starting torque | 150% or more running at 1 Hz with slip compensation and auto torque boost active (induction motor drive only) |
| Torque boost | Automatic torque boost for constant torque loads; manual torque boost settable 0.0 to 20.0% |
| Acceleration / deceleration time | 0.00 to 3600 s, two independent settings switchable while running; linear, S-curve weak, S-curve strong or non-linear pattern |
| Multistep frequency | 16 steps (step 0 to 15) selected by SS1, SS2, SS4 and SS8 |
| Digital inputs | 5 programmable inputs: X1, X2, X3, FWD and REV. Sink or source selected with the built-in switches on the unit |
| Analog inputs | 2 inputs: terminal 12 accepts 0 to +10 V DC for 0 to 100%; terminal C1 accepts +4 to +20 mA DC (or 0 to +20 mA DC) for 0 to 100%. Either can be used as PID process command or feedback |
| Frequency setting potentiometer | Built-in volume. Terminal 13 supplies DC 10 V for an external 1 to 5 kΩ potentiometer |
| Transistor output | 1 output (Y1). Short circuit when ON signal is output, or open circuit when ON signal is output. Max 27 V DC, max 50 mA, leak current 0.1 mA max, ON voltage within 2 V at 50 mA |
| Alarm relay output | 1 output (30A, 30B, 30C). No-voltage contact signal (1c) when the inverter stops on an alarm. Alarm output can be switched between excitation operation and non-excitation operation. Contact rating AC 250 V 0.3 A cosφ = 0.3, DC 48 V 0.5 A |
| Analog output | 1 output (FMA). DC voltage 0 to 10 V, gain settable between 0 and 300%. Selectable monitor: output frequency before or after slip compensation, output current, output voltage, input power, PID feedback value, DC link circuit voltage, PID command, PID output, analog output test |
| Serial communication | Built-in RJ-45 connector, RS-485. Selectable protocol: dedicated keypad protocol, Modbus RTU, Fuji dedicated inverter protocol, or SX protocol for PC loader. Includes terminator ON/OFF switch |
| PLC terminal | +24 V (22 to 27 V), max 50 mA |
| PID control | Process PID regulator. Command from keypad, analog input terminal C1 or RS-485; feedback from analog input terminal C1. Low liquid level stop function, forward/reverse switching, integration reset and hold |
| DC injection braking | Starting frequency 0.0 to 60.0 Hz, braking time 0.0 to 30.0 s, braking level 0 to 100% (induction motor drive only) |
| Momentary power failure | Protective function stops the inverter on a momentary power failure of 15 ms or more; restart selectable |
| Installation location | Indoors, free of corrosive gases, flammable gases, dust and oil mist, contamination level 2 (IEC 60664-1: 2007). Keep out of direct sunlight |
| Ambient temperature | −10°C (14°F) to +50°C (122°F) open type (IP20); −10°C (14°F) to +40°C (104°F) with side-by-side mounting or with a NEMA 1 kit fitted |
| RoHS | Yes |
| Ambient humidity | 5 to 95% RH (no condensation) |
| Altitude | 1000 m (3300 ft) or less with no output derating |
| Vibration | 3 mm (0.12 inch) vibration width from 2 to less than 9 Hz; 9.8 m/s² from 9 to less than 20 Hz; 2 m/s² from 20 to less than 55 Hz; 1 m/s² from 55 to less than 200 Hz |
Specifications on this page are taken from Fuji Electric FRENIC-Mini Series catalog, 24A1-E-0011e, printed pages 6, 7, 9 to 14 and 16. Ambient temperature derating and RoHS status are taken from Fuji Electric Corp. of America datasheet FECA-DS-101b. Verified September 2026.
Matched options
| Option | Part number | Note |
|---|---|---|
| NEMA 1 kit | NEMA1-C2-201 | Not applicable to the EMC filter built-in type or to inverters of 5.5 kW or above |
| DIN rail mounting base | RMA-C1-2.2 | Not suitable for inverters of 5.5 kW (7.5 HP) or above |
| Braking resistor, 10%ED type | DB2.2-2C | 40 ohm |
| Braking resistor, compact type | TK80W120 | 120 ohm, 0.08 kW, no braking unit required |
Specifications on this page are taken from Fuji Electric FRENIC-Mini Series catalog, 24A1-E-0011e, printed pages 19, 20 and 21. Verified September 2026.
Documentation
Frequently asked questions
- What motor can the FRN0012C2S-2U run?
- It is rated for a 3 HP Fuji four-pole standard motor, with a rated capacity of 4.5 kVA and a rated output current of 12.0 A.
- What input power does the FRN0012C2S-2U need?
- Three-phase, 200 to 240 V, 50/60 Hz. The permitted variation is voltage: +10 to -15% (voltage unbalance 2% or less), frequency: +5 to -5%.
- What is the overload rating of the FRN0012C2S-2U?
- 150% of rated current for 1 min; 150% of rated current for 1 min or 200% of rated current for 0.5 s when the rated current in parentheses applies, on a rated output current of 12.0 A.
- Does the FRN0012C2S-2U support Modbus RTU?
- Yes. RS-485 is built in on an RJ-45 connector and Modbus RTU is one of the selectable protocols, alongside the Fuji dedicated inverter protocol, the dedicated keypad protocol and SX protocol for PC loader.
- Can a braking resistor be used with the FRN0012C2S-2U?
- Yes. The braking transistor is built in and the matched 10%ED braking resistor is the DB2.2-2C at 40 ohm.
- Which NEMA 1 kit fits the FRN0012C2S-2U?
- The NEMA1-C2-201. Mounting the kit brings the inverter enclosure into compliance with the NEMA1 Standard (UL TYPE1 certified).
- What temperature and humidity can the FRN0012C2S-2U run in?
- −10°C (14°F) to +50°C (122°F) open type (IP20); −10°C (14°F) to +40°C (104°F) with side-by-side mounting or with a NEMA 1 kit fitted. Humidity is 5 to 95% RH with no condensation, at 1000 m (3300 ft) or less without derating.
- Series:
- FRENIC-Mini (C2)
- Phase:
- 3-Phase
- Voltage:
- 230VAC
- Power Rating:
- 3 HP
- Enclosure:
- IP20
- Safe Torque Off (STO):
- No
- Communication:
- Modbus RTU
- Warranty:
- 3-Year Standard Warranty
- Software Included:
- FRENIC-Loader
- Braking Transistor:
- Built-In
