Fuji Inverter Manual

The Fuji Inverter is a high-performance variable frequency drive designed for precise motor control, energy efficiency, and reliable operation in industrial applications. With advanced features like PID control, multiple operating modes, comprehensive protection functions, and user-friendly programming interface, it provides optimal performance for AC motor speed regulation. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

Features at a Glance

Key components: Digital operator panel, Control terminals, Main circuit terminals, Cooling fan, LED indicators.

Feature	Description
Digital operator	LCD display with keypad for programming and monitoring
Control terminals	For start/stop commands, speed reference, and monitoring signals
Main circuit terminals	Power input (R/S/T) and motor output (U/V/W)
Cooling fan	Forced air cooling system
LED indicators	Power, run, fault status indicators
Braking resistor	Optional dynamic braking capability
Communication ports	RS-485, Modbus RTU protocol support
PID control	Built-in PID controller for process control
Multi-function inputs	Programmable digital inputs
Relay outputs	Programmable relay outputs for status indication

Installation

Unpack and inspect contents. Mount in suitable enclosure.

1. Mounting: Install in well-ventilated location with proper clearances.
2. Power wiring: Connect input power to R/S/T terminals; motor to U/V/W terminals.
3. Control wiring: Connect control signals to appropriate terminals.
4. Grounding: Ensure proper grounding for safety and noise immunity.

WARNING! High voltage present; disconnect power before installation. Ensure proper grounding to prevent electric shock.

First-Time Setup

Power on inverter; configure basic parameters.

1. Motor parameters: Set motor rated voltage, current, and frequency.
2. Acceleration/deceleration: Configure ramp times for smooth operation.
3. Operation mode: Select V/F control or sensorless vector control.
4. Frequency reference: Set initial speed reference source (digital operator or external).

CAUTION! Verify motor parameters before operation to prevent damage.

Specifications

• Power Rating: 0.4kW to 75kW (depending on model).
• Input Voltage: 200-240V AC, 380-480V AC three-phase.
• Output Frequency: 0-400Hz adjustable.
• Control Methods: V/F control, sensorless vector control.
• Protection Features: Overcurrent, overload, overvoltage, undervoltage, overtemperature.
• Communication: RS-485, Modbus RTU standard.
• Operating Temperature: -10°C to +50°C.
• Storage Temperature: -20°C to +65°C.

Controls and Settings

Access parameters via digital operator keypad. Main buttons: RUN, STOP, PROGRAM, ENTER, UP/DOWN arrows.

Key Parameters: F01 (Frequency setting), F02 (Operation method), F03 (Maximum frequency), F04 (Base frequency), F05 (Rated voltage), F06 (Acceleration time), F07 (Deceleration time).

Monitoring: Output frequency, output current, DC bus voltage, fault history. Programming: Group parameters (Basic, Standard, Advanced functions).

Connecting Devices

Power: R/S/T input; U/V/W motor output. Control: Digital inputs, analog inputs, relay outputs.

1. Disconnect all power before wiring.
2. Use shielded cables for control wiring.
3. Separate power and control wiring.
4. Connect braking resistor if required.

Tip: Keep control cables away from power cables to prevent noise interference.

Operation Modes

Supports multiple operation modes for different applications.

1. Keypad operation: Use digital operator for start/stop and speed control.
2. External operation: Use external signals for control.
3. Communication control: Operate via RS-485 communication.
4. PID operation: Automatic speed control based on process feedback.
5. Multi-step speed: Pre-set speed operation via digital inputs.

WARNING! Always start with low speed and gradually increase to verify proper operation.

Protection Features

Overcurrent protection: Trips at 150% of rated current for 60 seconds. Overload protection: Electronic thermal protection for motor. Overvoltage/Undervoltage: Protects against power supply abnormalities. Overtemperature: Monitors heatsink temperature.

Maintenance & Care

Regular inspection: Check for dust accumulation, loose connections, abnormal noises. Cleaning: Use dry compressed air to clean heatsink and components.

CAUTION! Disconnect power before maintenance. Do not use liquids for cleaning.

Regulatory Information

CE compliant: Meets European EMC and low voltage directives. UL/cUL listed: Complies with North American safety standards. RoHS compliant: Free from hazardous substances. For technical support, contact Fuji Electric customer service or visit www.fujielectric.com.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No display on keypad	Power supply issue	Check input power; verify proper voltage.
Motor not running	Control circuit/wiring	Check run command; verify control wiring.
Overcurrent fault	Motor/load issue	Check for motor overload; verify acceleration time.
Overvoltage fault	Regeneration/braking	Increase deceleration time; install braking resistor.
Overtemperature fault	Cooling/ambient temperature	Clean heatsink; ensure proper ventilation.

Reset: Clear faults by pressing STOP/RESET button or cycling power.

Service: Contact authorized Fuji Electric service center for repairs.