Fuji Frenic Mini Manual

The Fuji Frenic Mini is a compact, high-performance inverter designed for variable speed control of three-phase induction motors. It features easy operation, energy-saving capabilities, multiple control modes, built-in EMC filter, and comprehensive protection functions. Suitable for various industrial applications including pumps, fans, conveyors, and machine tools. 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 & Care 10. Regulatory Information 11. Troubleshooting

Features at a Glance

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

Feature	Description
Digital operator	For frequency setting and monitoring operation status
Control terminals	For start/stop control and multi-function inputs
Main circuit terminals	For power input and motor connection
Cooling fan	For heat dissipation during operation
LED indicators	Display operating status and fault conditions
EMC filter	Built-in electromagnetic compatibility filter
Braking transistor	For DC injection braking
Modbus communication	RS-485 interface for network control
PID control	Built-in PID controller for process control
Multi-function outputs	Relay and transistor outputs for external control

Installation

Unpack and inspect contents. Mount in suitable enclosure.

Mounting: Install on non-flammable surface with proper clearance for ventilation.
Power connection: Connect three-phase AC power to R, S, T terminals.
Motor connection: Connect motor to U, V, W terminals.
Control wiring: Connect control signals to appropriate terminals.
Grounding: Ensure proper grounding for safety and noise reduction.

WARNING! Disconnect all power before installation. Ensure proper grounding to prevent electric shock.

First-Time Setup

Power on inverter; configure basic parameters.

Motor parameters: Set motor rated current, voltage, and frequency.
Acceleration/deceleration: Set appropriate ramp times for application.
Frequency reference: Select source (digital operator, analog input, etc.).
Control mode: Choose V/F control or sensorless vector control.
Protection settings: Configure overload and overcurrent protection.

CAUTION! Verify all settings before starting motor. Incorrect settings may damage equipment.

Specifications

Power Supply: 3-phase 200-240V AC, 50/60Hz.
Output Capacity: 0.1kW to 7.5kW (depending on model).
Control Method: PWM control, V/F control, sensorless vector control.
Frequency Range: 0.5Hz to 400Hz.
Digital Operator: 4-digit LED display, RUN/STOP keys, programming keys.
Protection Functions: Overcurrent, overload, overvoltage, undervoltage, overheating.
Ambient Temperature: -10°C to +50°C (14°F to 122°F).
Storage Temperature: -20°C to +65°C (-4°F to 149°F).

Controls and Settings

Access parameters via digital operator. Front Panel: RUN, STOP, PROGRAM, UP/DOWN arrows, DATA/ENTER.

Key Functions: RUN (start operation), STOP (stop operation), PROGRAM (enter parameter mode), UP/DOWN (change values), DATA/ENTER (confirm selection).

Basic Parameters: Maximum frequency (F01), Acceleration time (F07), Deceleration time (F08), Motor rated current (F11), Motor rated slip (F12). Advanced Parameters: Control method (A01), Torque boost (F09), DC injection braking (F10), Multi-step speeds (F16-F22).

Connecting Devices

Power terminals: R, S, T (input), U, V, W (output). Control terminals: Forward/Reverse, Multi-function inputs, Analog inputs, Relay outputs.

Turn off all power before connecting devices.
Connect control wires according to application requirements.
Use shielded cables for analog signals to prevent noise interference.
Ensure proper wire sizing for current capacity.

Tip: Keep control wires separate from power wires to minimize electrical noise.

Operation Modes

Supports multiple control modes for various applications.

Keypad operation: Use digital operator for start/stop and frequency setting.
External control: Use external signals for operation control.
Multi-step speed: Pre-set up to 7 different speeds.
PID control: For process control applications.
Jog operation: For precise positioning and setup.
DC injection braking: For quick stopping.
Energy saving: Automatic voltage optimization.
Communication control: Modbus RS-485 network control.

WARNING! Do not operate beyond specified limits. Monitor motor temperature during extended 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. Ground fault protection: Detects ground leakage currents. Overheating protection: Monitors heatsink temperature.

Maintenance & Care

Disconnect power before maintenance. Check for dust accumulation monthly. Clean cooling fan and heatsink regularly. Tighten terminal screws annually. Check for abnormal vibrations or noises.

CAUTION! Do not touch terminals while power is applied. Wait 10 minutes after power off for capacitors to discharge.

Regulatory Information

CE compliant: Meets European EMC and low voltage directives. UL/cUL listed: Certified for North American markets. RoHS compliant: Free from hazardous substances. Copyright © Fuji Electric Co., Ltd. For technical support, visit www.fujielectric.com or contact local distributor.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Inverter does not start	Power supply/control signal	Check power input; verify run command signal; check parameter settings.
Motor does not rotate	Wiring/frequency setting	Check motor connections; verify output frequency setting; check load condition.
Overcurrent fault	Acceleration time/short circuit	Increase acceleration time; check for motor ground fault; verify load inertia.
Overvoltage fault	Deceleration time/regeneration	Increase deceleration time; install braking resistor; check power supply voltage.
Overheating fault	Ambient temperature/ventilation	Improve ventilation; reduce load; clean cooling fan and heatsink.

Reset: Clear faults by pressing STOP key or cycling power.

Service: Contact authorized Fuji Electric service center for repairs.