is a high-power variable frequency drive (VFD) from the FRENIC-Ace (E2) series. It is an industrial powerhouse designed to drive motors up to 315 kW (450 HP), depending on the duty cycle.
Manufacturer:
Fuji Electric
Series:
Frenic Ace
Model:
FRN0520E2S-4E
Application:
pumps / fans / general purpose
Capacity, kW:
200 / 220 / 220 / 280
Current, :
377 / 415 / 415 / 520
Main power supply, V:
380-480
Phase:
3
Output frequency, Hz:
25-500
Enclosure:
IP00
Overload capacity, % per 1 min.:
150 / 120 / 150 / 120
Acceleration time, sec:
0-6000
Deceleration time, sec:
0-6000
EMC filter:
-
Braking unit:
optional
Analog input:
1
Digital input:
5
Analog output:
2
Digital output:
2 - transistor
Relay output:
1
RS485 (Modbus RTU):
+
Starting torque:
150%
PID:
PID-Regulation
V/f control mode:
-
Vector control with feedback:
+
Sensorless vector control:
+
Operation temperature, :
-10.....+40
Storage temperature, :
-25.....+65
Dimensions (W x H x D), mm:
686,41000366
Weight, kg:
130
Technical Ratings & Duty Cycles
The Ace series uses a flexible rating system, allowing you to use this single drive for different motor sizes based on the load type:
Rating Type
Applicable Motor
Rated Current
Overload Capacity
Normal Duty (ND)
315 kW (450 HP)
520.0 Amps
120% for 1 min
High Normal Duty (HND)
280 kW (350 HP)
415.0 Amps
120% for 1 min
High Heavy Duty (HHD)
220 kW (300 HP)
377.0 Amps
150% (1m) / 200% (0.5s)
Input Voltage: 3-Phase 380V to 480V AC (+10% / -15%).
Max Output Frequency: 0.1 to 500 Hz.
Physical Specifications (Imperial)
Due to its massive power output, this drive requires a large cabinet-style chassis for thermal management.
Measurement
Metric
Imperial (Inches/Lbs)
Width
686.3 mm
27.02 in
Height
1000 mm
39.37 in
Depth (Length)
366 mm
14.41 in
Weight
130 kg
286.6 lbs
The Fuji Electric FRN0520E2S-4GB (FRENIC-Ace) is a massive industrial-grade drive designed for motors up to 315kW (450 HP). At this extreme power level (up to 520 Amps), the drive acts as the central power management and automation system for a factorys most critical heavy infrastructure.
Primary Control Functions
Built-in Logic (Mini-PLC): This is the drive's standout feature. It contains an internal logic controller (up to 200 steps) that can handle complex sequences, timers, and counters. You can automate a 450 HP systemlike a municipal water pump station or a massive mining conveyorwithout needing an external PLC.
Triple/Quadruple Rating System: You can "tune" the hardware based on the load's difficulty:
Normal Duty (ND): Best for fans and pumps, allowing for a 450 HP (315kW) motor at 520.0A.
High Normal Duty (HND): Best for general high-performance needs, allowing a 400 HP (280kW) motor at 465.0A.
High Heavy Duty (HHD): Best for high-friction machinery (mixers/crushers), providing 200% overload protection for a 300 HP (220kW) motor at 377.0A.
Safe Torque Off (STO): A hardware-based safety function (SIL3/PLe) that physically disables the motor's power path. This allows for safe maintenance of massive machinery without needing large, expensive external magnetic contactors.
Operational Capabilities
Universal Motor Support: It can control standard Induction Motors as well as high-efficiency Permanent Magnet (PM) Synchronous Motors. For a 450 HP motor, switching to PM technology can save enough in annual electricity costs to pay for the drive itself in a short time.
Advanced Vector Control: Maintains steady speed and maximum torque even at 0 RPM or during sudden load spikes. This is critical for 450 HP applications like large industrial extruders, heavy-duty mining conveyors, or massive kilns.
Multi-Frequency Control: It can follow multiple speed references simultaneously, ideal for complex winding or tension-control machinery in large-scale paper or steel mills.
Dynamic PID Control: Features built-in PID for maintaining constant pressure, flow, or temperature with advanced "anti-windup" logic to prevent system surges during the startup of a 450 HP motor.
Safety & Maintenance
Removable Control Terminals: The wiring terminal block is detachable. If the drive ever needs replacing, you can just unplug the block and plug it into the new unitno re-wiring required, which saves hours of high-stakes downtime.
Predictive Life Diagnostics: The drive monitors its own "health," tracking the life of its cooling fans and internal capacitors. It will trigger a warning when these reach 90% of their life, allowing you to schedule maintenance before a catastrophic failure occurs.
Dual RS-485 Ports: Features two communication ports as standard, so you can connect a Touchscreen (HMI) and a PC for programming simultaneously.
Connectivity
Standard Modbus RTU & CANopen: Built-in for easy factory networking.
Expandable: The Ace can accept optional cards for Profibus, DeviceNet, Ethernet/IP, and Profinet, allowing it to fit into any modern Industry 4.0 factory network.
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