Fuji AC Drive Manual

The Fuji AC Drive is an industrial variable frequency drive designed for precise motor control, energy efficiency, and reliable performance. It features advanced control algorithms, multiple operating modes, comprehensive protection functions, and user-friendly programming interfaces. Below are key sections covering safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Devices 7. Operation Modes 8. Protection Features 9. Maintenance & Care 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Digital control panel, Power terminals, Control terminals, Cooling fan, LED indicators.

Feature	Description
Control panel	LCD display with keypad for parameter setting and monitoring
Power terminals	R/S/T for input; U/V/W for motor output
Control terminals	For digital inputs, analog inputs, relay outputs
Cooling fan	Forced air cooling system
LED indicators	Power, Run, Fault status indicators
Communication ports	RS-485, Modbus RTU protocol support
RUN/STOP	Start and stop motor operation
RESET	Clear fault conditions
MODE	Switch between monitoring and parameter settings
ENTER	Confirm parameter changes

Installation

Unpack and inspect contents. Mount in suitable enclosure.

Mounting: Secure drive to vertical surface using appropriate screws.
Power wiring: Connect R/S/T to AC power supply; U/V/W to motor terminals.
Control wiring: Connect digital/analog inputs as required for application.
Grounding: Ensure proper grounding for safety and noise reduction.

WARNING! Disconnect all power before installation. Ensure proper ventilation and clearance around drive.

First-Time Setup

Apply power; initialize drive parameters.

Motor parameters: Set motor rated voltage, current, and frequency.
Control mode: Select V/F control or sensorless vector control.
Acceleration/deceleration: Set ramp times according to application.
Frequency reference: Configure analog input or digital preset.

CAUTION! Verify motor parameters before operation to prevent damage.

Specifications

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

Controls and Settings

Access parameters via control panel keypad. Front Panel: RUN, STOP, MODE, ENTER, UP/DOWN arrows.

Key Parameters: Frequency reference, Acceleration time, Deceleration time, Motor voltage, Motor current, Maximum frequency, Base frequency.

Operation: Local/Remote control selection, Jog operation, Multi-speed settings. Protection: Overload protection setting, Overcurrent protection, Thermal protection. Monitoring: Output frequency, Output current, DC bus voltage, Fault history.

Connecting Devices

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

Disconnect all power before wiring.
Use shielded cables for control signals.
Maintain proper separation between power and control wiring.
Verify all connections are secure and correct.

Tip: Use twisted pair cables for analog signals to reduce noise interference.

Operation Modes

Supports multiple control modes for various applications.

V/F Control: Basic voltage/frequency ratio control.
Sensorless Vector: Improved torque control without feedback.
PID Control: For process control applications.
Multi-speed: Pre-set frequency operation.
Jog Operation: Low-speed momentary operation.
DC Injection: Motor braking control.

WARNING! Always verify operating mode matches application requirements.

Protection Features

Overcurrent: Trips at 150% of rated current. Overvoltage: DC bus overvoltage protection. Undervoltage: Low voltage detection. Overload: Electronic thermal protection. Overtemperature: Heat sink temperature monitoring.

Maintenance & Care

Regular inspection: Check connections, cooling fan, and heat sink. Cleaning: Use dry compressed air to remove dust. Replacement: Replace cooling fan if noisy or not operating.

CAUTION! Disconnect all power before maintenance. Do not use liquid cleaners.

Regulatory Information

CE compliant: Meets European EMC directives. UL certified: UL 508C standard. RoHS compliant: Free of hazardous substances. For technical support, visit www.fujielectric.com or contact local distributor.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Drive won't start	No power/run command	Check power supply; verify run command signal.
Overcurrent fault	Motor short/miswiring	Check motor wiring; verify motor parameters.
Overvoltage fault	Deceleration too fast	Increase deceleration time; add braking resistor.
Undervoltage fault	Power supply issue	Check input voltage; verify power connections.
Overtemperature	Poor ventilation	Clean cooling fins; ensure adequate airflow.

Reset: Press RESET button after clearing fault condition.

Service: Contact authorized Fuji service center for repairs.