Hitachi WJ-C1 Drive – Find comprehensive resources for Hitachi WJ-C1 AC drives, including product catalogs, manuals, price list, programming guides, fault, alarm, warnings & software support. Get expert assistance for troubleshooting and optimization.

Hitachi WJ-C1 drive is a compact, high-performance inverter designed for a wide range of industrial applications. It features sensor-less vector control, providing high starting torque and improved speed stability.
Power rating:
- 0.4 ~ 15kW (3-phase 400V)
- 0.1 ~ 15kW (3-phase 200V)
- 0.4, 0.75kW (1-phase 100V)
- 0.1 ~ 2.2kW (1-phase 200V)
Features
The WJ-C1 Series ranges from 100-400VAC and single phase input to three phase output. The WJ-C1 Series comes with an integrated auto-tuning function for easy sensorless vector control that realizes high starting torque of 200% or greater, suitable for a variety of applications.
- High Starting Torque and dramatically improved speed stability with advanced sensorless vector control
- Full Closed Loop Vector Control capable
- Simplified Auto-tuning procedure (SLV)
- Easy to operate programming dial for quick direct programming
- Intuitive Setup and operation via standard integral keypad, optional enhanced keypad or PC software
- Capable of driving permanent magnet (PMAC) as well as standard induction motors
- Built in Easy Sequence (EzSQ) PLC-like functionality
- Active parameter display: Display those parameters which are enabled.
Specifications
Item | WJ-C1 Series | |
Control method | PWM control | |
Output frequency range | 0.01 to 590.00Hz | |
Frequency accuracy | ±0.01% for digital input / ±0.2% for analog input (at 25±10°C) (at the maximum frequency setting) | |
Frequency setting resolution | Digital input: 0.01 Hz , Analog input: (maximum frequency setting)/1000 | |
Voltage/ Frequency cont- rol mode | IM | V/f control (constant- or reduced-torque, free V/f, Auto-boost mode), V/f control with sensor, IM sensorless vector control |
PM (SM/PMM) | PM sensorless vector control | |
Rated overload current | Dual Rating: Normal Duty (ND): 150%/60sec / Light Duty (LD): 120%/60sec | |
Acceleration/Deceleration time | 0.00 to 3600.00 seconds (in linear or curved pattern) | |
Starting torque | 200%, 0.5Hz (by IM sensorless vector control) | |
Regenerative braking | Built-in transistor circuit (without resistor) | |
Carrier frequency range | Normal Duty (ND): 2 to 15kHz, Light Duty (LD): 2 to 10kHz (with derating) | |
Monitor function ( | 40 kinds | |
Protective function | Over Current, Over Voltage, Under Voltage, Electronic thermal, Over Load and etc. | |
Other functions | 57 kinds | |
Digital panel | 5 digits 7 seg, 1 sign LED, 7 status LED, 4 keys and 1 JOG dial (non-detachable) | |
Input | Frequency reference | Keypad, Remote operator, Modbus®, Field network option, External analog signal |
RUN/STOP command | Keypad, Remote operator, Modbus®, Field network option | |
Input terminals | 7 terminals (NO/NC selectable, Sinc(PLC-P24 jumper)/Source(PLC-L jumper) selectable) | |
Pulse train input | 2 terminals max. 32kHz x 2 (terminal [8] (fix to phase A), terminal [7](when enable phase B)) | |
Analog input | 2 terminals (terminal [Ai1] for DC0 to 10V voltage input, terminal [Ai2] for DC4 to 20mA current input) | |
Thermistor input | 1 terminal (shared with terminal [5]) (support for PTC type thermistor) | |
Safety input | 2 terminals (terminal [ST1] and terminal [ST2]) | |
Output | Output terminals | 2 terminals with open collector (NO/NC selectable, capable for Sink/Source circuit), 1 terminal for relay output (1c type) |
Safety output | 1 terminal (shared with terminal [11], switched to EDM by slide switch) | |
Analog output / Pulse train output | 2 terminals (terminal [Ao1] for DC0 to 10V voltage output, terminal [Ao2] for pulse train output, max. 32kHz/DC10V output) | |
External interface | USB | Micro-B (for inverter configuration software ProDriveNext) |
Modbus® | Support for Modbus-RTU (RS-485 serial communication) | |
External operator | RJ45 connector (Exclusive connector for remote operator) | |
Field network option | WJ200 series field network options. WJ-ECT: for EtherCAT® communication, WJ-PB: for PROFIBUS® communication, WJ-PN: for PROFINET® communication, WJ-CCL: for CC-Link® communication. (*7) One unit can be mounted. | |
External control power supply | External 24 VDC can be input from [P24] terminal (installation of reverse-current-prevention diode is mandatory). | |
EMC noise filter | Not built-in (optional external noise filter can be connected) | |
Environment | Ambient temperature | ND (normal duty):-10 to 50°C / LD (light duty): -10 to 40°C |
Storage temperature | -20–65°C | |
Humidity | 20-90%RH (non-condensing) | |
Vibration | 0.075 mm amplitude for 10 to 57 Hz 9.8 m/s2 (1.0G) for 57 to 150 Hz | |
Installation | Altitude: 1000m or less, indoors (free from corrosive gases, oil mist, and dust) | |
Structure | Structure Protection: IP20 (UL open type), replaceable Fan | |
Standards | CE: IEC 61800-3 (EMC-filter option required), IEC 61800-5-1 UL : UL 61800-5-1, -Overvoltage Category 3, -Pollution Degree 2 Others: c-UL Safety function: STO (Safe torque off) function/ IEC 61508, IEC 61800-5-2: SIL3, ISO 13849-1: Cat.3 PLe, IEC 60204-1:Stop Cat.0 | |
Other optional components | Noise Filter, DC link choke, AC reactor, Braking resistor, Regenerative braking unit, Remote operator (OPE-SR/OPE-SBK/OPE-SRmini/WOP), Inverter configuration software ProDriveNext, etc. |