Fuji AC Drives User Manual

The Fuji AC Drives are advanced variable frequency drives designed for precise motor control in industrial applications. These drives feature robust construction, comprehensive protection functions, flexible control modes, easy parameter setting, and reliable performance for various motor control needs. Below are key sections for 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 & Inspection 10. Regulatory Information 11. Troubleshooting

Features at a Glance

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

Feature	Description
Digital operator	For parameter setting and monitoring
Control terminals	For external control signals
Main circuit terminals	For power input and motor output
Cooling fan	For heat dissipation
Heat sink	For thermal management
LED indicators	For status monitoring
RUN/STOP	Starts and stops motor operation
RESET	Clears fault conditions
MODE/SET	Selects operation modes and sets parameters
UP/DOWN	Adjusts frequency and parameter values

Installation

Unpack and inspect contents. Mount on appropriate surface.

Mounting: Install in well-ventilated area with proper clearance.
Power connection: Connect main power to R/L1, S/L2, T/L3 terminals.
Motor connection: Connect motor to U/T1, V/T2, W/T3 terminals.
Control wiring: Connect control signals to appropriate terminals.
Grounding: Ensure proper grounding for safety.

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

First-Time Setup

Power on drive; follow parameter setting procedure.

Basic parameters: Set motor rated current, voltage, and frequency.
Control mode: Select V/F control or sensorless vector control.
Accel/decel time: Set appropriate acceleration and deceleration times.
Frequency reference: Set maximum and minimum operating frequencies.
Protection settings: Configure overload and overcurrent protection.

CAUTION! Verify all settings before operation. Incorrect parameters may damage motor or drive.

Specifications

Power Supply: 3-phase 200-240V AC, 50/60Hz
Output Capacity: 0.4kW to 55kW (depending on model)
Control Method: PWM control, V/F control, sensorless vector control
Frequency Range: 0.5Hz to 400Hz
Protection Functions: Overcurrent, overload, overvoltage, undervoltage, overtemperature
Communication: RS-485, Modbus RTU protocol
Operating Temp: -10°C to +50°C
Storage Temp: -20°C to +65°C

Controls and Settings

Access parameters via digital operator. Front Panel: RUN/STOP, RESET, MODE/SET, UP/DOWN buttons.

Digital Operator: Frequency display, Parameter display, RUN indicator, Fault indicator, Programming keys.

Basic Parameters: Motor rated current, Base frequency, Maximum frequency, Accel/decel time. Advanced Parameters: Torque boost, Slip compensation, DC injection braking, Multi-function inputs. Protection: Overload protection, Overcurrent protection, Electronic thermal relay.

Connecting Devices

Main circuit: Power input and motor output. Control circuit: External controls and signals.

Turn off all power before connecting.
Connect main power to R/L1, S/L2, T/L3 terminals.
Connect motor to U/T1, V/T2, W/T3 terminals.
Connect control signals to multi-function terminals.
Connect communication cables if using network control.

Tip: Use shielded cables for control wiring to prevent noise interference.

Operation Modes

Supports various control modes for different applications.

Keypad operation: Use digital operator for local control.
External control: Use external signals for remote operation.
Communication control: Use RS-485 for network control.
Jog operation: For precise positioning and testing.
Multi-step speed: Pre-set multiple operating speeds.
PID control: For process control applications.
Auto-tuning: For optimal motor performance.

WARNING! Do not operate without proper motor connection. Ensure all safety devices are functional.

Protection Features

Overcurrent Protection: Trips when current exceeds limit. Overload Protection: Electronic thermal relay for motor protection. Overvoltage/Undervoltage: Protects against power supply abnormalities. Overtemperature: Monitors drive temperature.

Maintenance & Inspection

Regular inspection recommended. Check for abnormal noise, vibration, or temperature. Clean cooling fins and fan. Tighten terminal screws periodically.

CAUTION! Disconnect all power before maintenance. Do not touch terminals while powered.

Regulatory Information

CE Compliant: Meets European EMC and low voltage directives. UL Listed: Certified for North American markets. RoHS Compliant: Free of hazardous substances. Copyright © 2025 Fuji Electric; all rights reserved. For technical support, visit www.fujielectric.com or contact local distributor.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Drive does not start	Power supply/control signals	Check power input; verify run command; check control wiring.
Overcurrent fault	Motor short/overload	Check motor insulation; reduce load; increase accel time.
Overvoltage fault	Regeneration/deceleration	Increase decel time; install braking resistor.
Undervoltage fault	Power supply	Check input voltage; verify power connections.
Overtemperature	Cooling/ambient temperature	Clean cooling fins; ensure proper ventilation; check fan operation.

Reset: Press RESET button after fault clearance.

Service: Contact authorized Fuji service center; www.fujielectric.com