Technical Overview

Compact 4.0 kW (LO) / 3.0 kW (HO) VFD with 380-480V 3AC input, PROFIBUS-DP, Safe Torque Off, and IP20 protection.

Key Features

3-phase AC input voltage: 380-480V (+10% / -20%), 47-63Hz.
Rated power: 4.0 kW (Low Overload) / 3.0 kW (High Overload).
Integrated Safe Torque Off (STO) safety function.
PROFIBUS-DP communication interface.
IP20 / UL Open Type protection rating.
Compact FSA frame size (196 x 73 x 203 mm HxWxD).
I/O interface: 6 digital inputs, 2 digital outputs, 1 analog input, 1 analog output.
Motor temperature sensor input (PTC/KTY compatible).
High efficiency (η = 0.97) and power factor (0.70-0.85).
Unfiltered output for specific application requirements.
Low Overload (LO) capability: 150% base current for 3s, 110% for 57s within a 300s cycle.
High Overload (HO) capability: 200% base current for 3s, 150% for 57s within a 300s cycle.

Technical Specification Matrix

Parameter	Value
Input Voltage	3 AC 380-480 V (+10% / -20%)
Line Frequency	47-63 Hz
Rated Current (LO)	11.40 A
Rated Current (HO)	10.60 A
Output Voltage	400V IEC / 480V NEC
Rated Power (LO)	4.00 kW / 5.00 hp
Rated Power (HO)	3.00 kW / 4.00 hp
Output Current (LO)	8.80 A
Output Current (HO)	7.30 A
Max. Output Current	14.60 A
Pulse Frequency	4 kHz
Output Frequency (Vector Control)	0-240 Hz
Output Frequency (V/f Control)	0-550 Hz
Power Factor (λ)	0.70-0.85
Offset Factor (cos φ)	0.95
Efficiency (η)	0.97
Sound Pressure Level (1m)	52 dB
Power Loss	119.0 W
Integrated Filter Class	Unfiltered
Communication Interface	PROFIBUS DP
Standard Digital Inputs	6
Fail-safe Digital Inputs	1
Digital Outputs (Relay Changeover Contact)	1 (DC 30V, 0.5A resistive load)
Digital Outputs (Transistor)	1 (DC 30V, 0.5A resistive load)
Analog / Digital Inputs	1 (Differential, 10-bit resolution)
Analog Outputs	1 (Non-isolated)
Motor Temperature Sensor Input	1 (PTC, KTY compatible)
Safety Function	Safe Torque Off (STO) integrated
Protection Rating	IP20 / UL Open Type
Frame Size	FSA
Physical Weight (kg)	2.1
Dimensions L x W x H (cm)	22.5 x 27 x 8.5

Industrial Applications

1. Water/Wastewater Pumping Stations

Precisely controls the speed of centrifugal pumps in water treatment plants or wastewater pumping stations. The 4.0 kW power and 380-480V AC input/output are suitable for medium-sized pumps. The IP20 rating allows for cabinet installation in controlled environments, and PROFIBUS-DP enables seamless integration into plant-wide control systems.

Problem Solved

Optimizes pump efficiency and reduces energy consumption by adjusting motor speed to demand, minimizing mechanical wear. The STO function ensures critical safety for maintenance personnel during pump servicing.

Variable Speed DriveCentrifugal PumpFlow ControlEnergy EfficiencyPROFIBUS-DPIP204.0 kW380-480VSafe Torque Off

2. HVAC Systems for Commercial Buildings

Utilizes the drive to control fan motors in large commercial building HVAC (Heating, Ventilation, and Air Conditioning) systems. The 4.0 kW power and 380-480V AC operation suit many commercial air handling units (AHUs). High efficiency (η = 0.97) contributes to energy savings, and the compact FSA frame aids panel integration.

Problem Solved

Enables demand-controlled ventilation, leading to significant energy savings by precisely regulating fan speed based on building requirements. The STO function provides safety during system maintenance or emergency shutdowns.

Fan ControlHVACAir Handling Unit (AHU)Energy SavingsVariable Frequency DriveBuilding AutomationIP204.0 kW380-480VCompact Design

3. Conveyor Systems in Manufacturing

Powers and controls conveyor belt motors in manufacturing or logistics facilities. The 4.0 kW low overload rating is appropriate for various material handling tasks. Flexible output frequency control (0-550 Hz V/f or 0-240 Hz vector) allows for precise speed and torque management. PROFIBUS-DP enables integration into automated production lines.

Problem Solved

Provides soft starting and stopping for conveyor motors, reducing mechanical stress and extending equipment lifespan. Allows for precise adjustment of conveyor speed to match production rates, enhancing throughput and process synchronization. STO ensures safety during emergency stops or maintenance.

Conveyor BeltMotor ControlMaterial HandlingVariable SpeedSoft StartPROFIBUS-DP4.0 kW380-480VSafe Torque OffTorque Control

Siemens SINAMICS G120C PROFIBUS DP Compact VFD 4kW

Siemens SINAMICS G120C PROFIBUS DP Compact VFD 4kW

Technical Overview

Key Features

Technical Specification Matrix

Industrial Applications

1. Water/Wastewater Pumping Stations

2. HVAC Systems for Commercial Buildings

3. Conveyor Systems in Manufacturing