Fuji Electric Drive Manual

The Fuji Electric Drive is a high-performance variable frequency drive designed for industrial motor control applications. This manual covers the FRENIC-Mini series with features including advanced vector control, multiple control modes, built-in PID controller, communication interfaces (RS-485, Modbus), safety functions, and comprehensive protection features. 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. Safety Features 9. Maintenance & Inspection 10. Regulatory Information 11. Troubleshooting

Features at a Glance

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

Feature	Description
Control modes	V/f control, Advanced vector control, Sensorless vector control
Frequency range	0.5 to 400 Hz adjustable
Input voltage	200-240V AC, 3-phase, 50/60Hz
Communication	RS-485, Modbus RTU protocol
PID controller	Built-in for process control applications
Protection functions	Overcurrent, Overvoltage, Motor overload, Ground fault
Braking	DC injection braking, Regenerative braking option
Accel/Decel time	0.1 to 3600 seconds programmable
Multi-function inputs	7 programmable digital inputs
Multi-function outputs	2 relay outputs, 1 open collector output

Installation

Unpack and inspect contents. Mount in appropriate enclosure.

Mounting: Install in vertical position on non-flammable surface with adequate clearance.
Power wiring: Connect 3-phase power to R/L1, S/L2, T/L3 terminals.
Motor wiring: Connect motor to U, V, W terminals.
Control wiring: Connect control signals to appropriate terminals.
Grounding: Connect protective ground wire to ground terminal.

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

First-Time Setup

Apply power; initialize parameters using digital operator.

Motor data setup: Enter motor rated current, voltage, and number of poles.
Control method selection: Choose V/f or vector control based on application.
Frequency reference: Set maximum and minimum operating frequencies.
Acceleration/deceleration: Program ramp times according to load requirements.
Input/output configuration: Assign functions to control terminals.

CAUTION! Verify motor rotation direction before full operation. Ensure all covers are installed.

Specifications

Model Series: FRENIC-Mini C2
Power Range: 0.4 kW to 7.5 kW (0.5 HP to 10 HP)
Input Voltage: 3-phase 200-240V AC ±10%, 50/60Hz
Output Voltage: 3-phase 0 to input voltage, PWM controlled
Control Method: Sine wave PWM
Frequency Resolution: 0.01 Hz digital setting
Overload Capacity: 150% of rated current for 60 seconds
Ambient Temperature: -10°C to +50°C (14°F to 122°F)
Storage Temperature: -20°C to +65°C (-4°F to 149°F)
Protection Rating: IP20 (terminal cover installed)

Controls and Settings

Access parameters via digital operator. Front Panel: RUN/STOP keys, MODE key, UP/DOWN arrows, RESET key, LED indicators.

Digital Operator: 4-digit LED display, parameter navigation keys, function keys for quick access to common settings.

Basic Parameters: Maximum frequency (F04), Base frequency (F05), Acceleration time (F07), Deceleration time (F08). Advanced Parameters: Motor constants (P01-P05), Control method (A01), PID settings (C01-C17), Communication settings (H30-H36). Protection Parameters: Electronic thermal (F09), Overcurrent (F10), Overvoltage (F11).

Connecting Devices

Main circuit: Power input, Motor output. Control circuit: Digital inputs, Analog inputs, Relay outputs, Communication ports.

Disconnect all power before wiring.
Use shielded cables for control wiring to prevent noise interference.
Separate power and control wiring in different conduits.
Connect communication cables to RS-485 terminals (S+, S-).
Connect analog signals to 13, 12, 11, C1 terminals as required.

Tip: Use twisted pair cables for analog signal connections and proper termination for communication lines.

Operation Modes

Supports multiple control and operation modes for various applications.

Keypad operation: Use RUN/STOP keys on digital operator.
External control: Use external signals through control terminals.
Communication control: Operate via RS-485 communication.
Jog operation: Momentary operation at preset jog frequency.
Multi-step speed: Pre-program up to 15 different speeds.
PID operation: Automatic control using feedback signals.
Energy saving: Automatic voltage optimization for reduced power consumption.

WARNING! Do not operate beyond specified ratings. Monitor motor temperature during extended operation.

Safety Features

Comprehensive protection: Overcurrent, Overvoltage, Undervoltage, Motor overload, Ground fault, Heatsink overheat, Input phase loss, Output phase loss. Safety stop function: Instantaneous stop via safety rated input.

Maintenance & Inspection

Regular maintenance ensures optimal performance and longevity.

Daily: Check for abnormal noise, vibration, or overheating.
Monthly: Clean air vents and check cooling fan operation.
Quarterly: Tighten terminal screws and check wiring connections.
Annually: Measure insulation resistance and check capacitor condition.

CAUTION! Disconnect power before maintenance. Discharge DC bus capacitors before servicing.

Regulatory Information

CE Compliant: Meets European EMC and Low Voltage Directives. UL Listed: Certified to UL 508C standard. RoHS Compliant: Free of hazardous substances. Copyright © 2023 Fuji Electric Co., Ltd. All rights reserved. For technical support, visit www.fujielectric.com or contact your local Fuji Electric distributor.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Drive does not start	Power supply/control circuit	Check input power; verify RUN command and enable signals.
Overcurrent fault (OC)	Acceleration time/short circuit	Increase acceleration time; check for motor ground fault.
Overvoltage fault (OV)	Deceleration time/regeneration	Increase deceleration time; install braking resistor if needed.
Motor overheating	Overload/cooling	Check load; adjust electronic thermal protection setting.
Communication error	Wiring/settings	Verify communication cable; check baud rate and station number.
Unstable operation	Parameter settings	Perform auto-tuning; adjust PID and filter settings.

Reset: Press RESET key after fault correction. Use parameter F02 for fault history.

Service: Contact authorized Fuji Electric service center for repairs.