Fuji FRENIC-Lift VVVF Inverters

Specialized Speed Control for Modern Elevator Systems

The FRENIC-Lift series sits between your lift controller and the traction machine, acting as the intelligent muscle of the system. In modernization projects, replacing an older AC-2 or failing VVVF drive with a Fuji LM1S unit is a standard procedure to restore reliability and improve ride quality without replacing the entire machine.

Precision Floor Leveling and Rollback Prevention

A common issue in aging lift systems is the "jerk" at start-up or the car rolling back slightly when the brake releases. The FRENIC-Lift uses a high-speed current control loop (500 Hz bandwidth) to apply torque instantly, holding the car steady before movement begins and ensuring it stops flush with the floor (±0.01% speed control accuracy).

Dual Motor Support: Geared and Gearless

These inverters are versatile. A single unit can be parameterized to drive a standard induction motor (geared traction) or a permanent magnet synchronous motor (gearless). This flexibility reduces inventory requirements for maintenance companies servicing diverse building portfolios.

Why Installers Choose Fuji Electric for Lift Projects

• High Overload Capability: Elevators require significant torque to overcome static friction and inertia. The FRENIC-Lift handles 200% of its rated current for 10 seconds, preventing trip-outs during heavy starts.
• Long-Life Design: Engineered for longevity with maintenance warnings for main circuit capacitors and cooling fans, helping facility managers plan downtime effectively.
• User-Friendly Interface: Units ship with the TP-G1-ELS multifunction keypad, which supports 12 languages and allows technicians to copy/paste parameters between identical drives.
• Emergency Rescue: Supports operation via battery or UPS (Uninterruptible Power Supply) to move the car to the nearest floor during a mains power failure.

How to Select the Right FRENIC-Lift Model

Choosing the correct inverter size is critical for safety and performance. Do not rely solely on the "kW" rating; motor current is the deciding factor.

Selection Checklist: 7 Steps to Verification

1. Motor Type: Confirm if the machine is Induction (Geared) or PM Synchronous (Gearless).
2. Rated Current: Check the motor nameplate for Amps (A). The inverter's rated current must match or slightly exceed this.
3. Supply Voltage: Confirm the building supply is 3-Phase 380V–480V.
4. Encoder Feedback: Identify your encoder type (Incremental, EnDat 2.1, SinCos). While the drive supports these, verify if you need a specific interface card.
5. Controller Communication: Determine how the lift controller speaks to the drive (Parallel I/O, Modbus RTU/RS-485, or DCP3).
6. Braking: The 7.5kW and 11kW models feature a built-in braking transistor. You will need to size an external braking resistor based on the lift's duty cycle.
7. Physical Space: Measure the available depth and width in the control cabinet (see dimensions in product details).

Required Information for Ordering

Before placing an order, please have the following data from your elevator system ready:

• Motor Nameplate Photo (kW, Amps, Voltage, RPM, Poles).
• Encoder Type/Model.
• Existing Drive Model (if modernization).

Model Comparison: FRN7.5LM1S-4EA vs. FRN11LM1S-4EA

Feature	FRN7.5LM1S-4EA	FRN11LM1S-4EA
Nominal Power	7.5 kW	11 kW
Input Voltage	3-Phase 380–480 V	3-Phase 380–480 V
Overload Capacity	200% (10 sec)	200% (10 sec)
Motor Compatibility	Induction & PM Sync	Induction & PM Sync
Braking Transistor	Built-in	Built-in
EMC Filter	Built-in (EN 61800-3)	Built-in (EN 61800-3)
Dimensions (WxHxD)	220 x 260 x 215 mm	220 x 260 x 215 mm
Weight	~5.7 kg	~7.5 kg
Keypad	Included (TP-G1-ELS)	Included (TP-G1-ELS)

Note: Always verify the rated output current against your motor's requirements. The dimensions listed are for the unit body; allow extra space for airflow and cable bending radius.

Available Fuji FRENIC-Lift Products

Fuji Electric FRN7.5LM1S-4EA Elevator Inverter (7.5 kW)

Ideal for standard residential passenger lifts (typically 6-8 person capacity) in low-to-mid-rise buildings. This unit provides energy-efficient control for 7.5 kW motors, featuring a built-in braking chopper and EMC filter.

• Capacity: 7.5 kW / 400V Class
• Key Specs: 200% Overload, ±0.01% Speed Accuracy.
• Checklist: Ensure motor rated current is compatible with the drive's output.
• View product details and pricing ›

Fuji Electric FRN11LM1S-4EA Elevator Inverter (11 kW)

Suited for larger passenger lifts or service elevators requiring higher torque capabilities. This 11 kW model handles heavier loads while maintaining the precise leveling and ride comfort expected in commercial environments.

• Capacity: 11 kW / 400V Class
• Key Specs: 24.5 A Rated Current, Support for Rescue Operation.
• Checklist: Verify cabinet depth (215 mm) and airflow requirements.
• View product details and pricing ›

Installation, Compatibility, and Compliance

Compatibility in Practice

For a successful installation, "compatibility" involves three main areas:

1. Electrical: Matching voltage and current ratings.
2. Signal: Ensuring the encoder signal (speed feedback) matches the drive's interface and that the lift controller's I/O logic matches the drive's inputs.
3. Mechanical: Ensuring the drive fits physically in the panel and that the braking resistor is sized correctly to dissipate the regenerative energy produced during descent with a full load.

Compliance Notes

The 'EA' series available here is designed for the European market.

• EMC: Includes a built-in filter compliant with EN 12015 / EN 61800-3 (essential for preventing interference with other building electronics).
• Standards: Built to support EN81-1+A3 requirements, specifically regarding Unintended Car Movement (UCM) monitoring functions.
• Origin: These units are designed in Japan and assembled in France (FR), simplifying supply chain and compliance verification for EU projects.

Frequently Asked Questions (FAQ)

How do I confirm compatibility with my elevator motor/controller?

Check your motor's nameplate for the rated current (Amps) and voltage. The inverter's rated current must meet or exceed the motor's. For the controller, verify the communication method (Parallel I/O, DCP3, or Modbus) and ensure the inverter supports it.

What information should I provide before ordering?

Please provide the motor power (kW), rated current (A), voltage (V), motor type (Induction or PM), and encoder type. This allows our team to verify the selection.

Can I replace a different brand drive with Fuji FRENIC-Lift?

Yes, this is a common modernization practice. However, you must reprogram the new Fuji drive with your motor's parameters (auto-tuning is recommended) and ensure the wiring to the lift controller is adapted to the Fuji terminal layout.

Do I need an encoder for my application?

For PM synchronous (gearless) motors, an encoder is mandatory. For induction (geared) motors, an encoder is highly recommended to achieve the high ride comfort and leveling accuracy (±0.01%) promised by the FRENIC-Lift series.

How do I choose a braking resistor?

The 7.5kW and 11kW models have built-in braking transistors, so you only need the resistor. The resistance (Ohms) and power (Watts) depend on the lift's speed, load, and usage frequency. Consult the manual or our support team for calculation guidance.

What does "overload capacity" mean in lift operation?

Elevators require a surge of power to get a heavy car moving from a standstill. "200% overload capacity" means the drive can output double its rated current for 10 seconds to handle this starting inertia without shutting down.

Do you ship across Europe and how fast?

Yes, ISF Elevator Shop ships across Europe. For items marked "In Stock," we offer same-day shipping if the order is placed during business hours. Please check the specific product page for real-time availability.

What is the difference between FRN...EA and other suffixes?

The "EA" suffix typically denotes a model tailored for the European market (English manuals, CE compliance, specific I/O logic). Always check the full part number to ensure it matches your region's requirements.

Buyer Checklist

Parameter	Why it matters / What to check
Input Voltage	Must match building supply (e.g., 3-Phase 400V). Mismatch leads to failure.
Rated Current (A)	Critical. Drive Amps must be ≥ Motor Amps. Do not size by kW alone.
Motor Type	Confirm if Induction (Geared) or PM (Gearless). Drive settings differ significantly.
Encoder Interface	Ensure the drive supports your encoder (EnDat, SinCos, etc.) for closed-loop control.
Braking	These models need an external resistor connected to P(+) and DB terminals.
EMC Filter	Verified built-in filter is required for EN 12015 compliance in residential lifts.
Panel Depth	Ensure your cabinet is deep enough (min 215mm + airflow clearance).

Related Products & Accessories

• Braking Resistors for Inverters – Essential add-on for regenerative braking.
• Elevator Encoders – Find compatible encoders for closed-loop vector control.
• EMC Filters & Chokes – Additional noise reduction components.
• Arkel ADrive VVVF Inverters – Alternative VVVF drives for elevator systems.
• Arcode Products – Elevator control solutions and components.