Technical Overview

Compact 3-phase 380-480V 1.1kW frequency converter with IP20 protection, Safe Torque Off, and PROFIBUS-DP for motor control.

Key Features

3-phase 380-480V AC input voltage (+10% / -20%, 47-63 Hz).
Low Overload (LO) capability: 1.10 kW rated power, 150% overload for 3s, 110% for 57s in a 300s cycle.
High Overload (HO) capability: 0.75 kW rated power, 200% overload for 3s, 150% for 57s in a 300s cycle.
Integrated Safe Torque Off (STO) function.
PROFIBUS-DP fieldbus communication.
I/O interface: 6 Digital Inputs, 2 Digital Outputs (1 relay, 1 transistor), 1 Analog Input, 1 Analog Output, 1 Motor Temperature Sensor Input (PTC/KTY).
IP20 / UL Open Type protection.
Output frequency for V/f control: 0-550 Hz.
Compact dimensions (FSAA frame size).
Energy-optimized vector control (SLVC) and automatic flux reduction for enhanced energy efficiency.
Flexible commissioning via PC (USB), Basic Operator Panel (BOP), Intelligent Operator Panel (IOP), or SINAMICS G120 Smart Access Module (wireless).

Technical Specification Matrix

Parameter	Value
Input Voltage	3 AC 380-480 V (+10% / -20%)
Input Frequency	47-63 Hz
Output Voltage	3 AC 400V (IEC) / 480V (NEC)
Rated Power (Low Overload)	1.10 kW / 1.50 hp
Rated Power (High Overload)	0.75 kW / 1.00 hp
Input Rated Current (LO)	4.10 A
Input Rated Current (HO)	3.20 A
Output Rated Current (LO)	3.10 A
Output Rated Current (HO)	2.20 A
Max. Output Current	4.40 A
Pulse Frequency	4 kHz
Output Frequency (V/f control)	0-550 Hz
Overload Capability (LO)	150% for 3s, 110% for 57s in a 300s cycle
Overload Capability (HO)	200% for 3s, 150% for 57s in a 300s cycle
Power Factor λ	0.70-0.85
Offset Factor cos φ	0.95
Efficiency η	0.97
Sound Pressure Level (1m)	49 dB
Power Loss	48.1 W
Filter Class (integrated)	Unfiltered
Communication	PROFIBUS DP
Digital Inputs (Standard)	6
Digital Inputs (Fail-safe)	1
Digital Outputs (Relay)	1 (DC 30V, 0.5A)
Digital Outputs (Transistor)	1 (DC 30V, 0.5A)
Analog / Digital Inputs	1 (Differential input, 10 bit resolution)
Analog Outputs	1 (Non-isolated)
Motor Temperature Sensor Input	1 (PTC, KTY compatible)
Protection Rating	IP20 / UL Open Type
Frame Size	FSAA
Physical Weight (kg)	1.1
Dimensions L x W x H (cm)	22.5 x 27 x 8.5

Industrial Applications

1. Conveyor Belt Systems for Material Handling

This VFD precisely controls the speed of motors driving conveyor belts, enabling optimized material flow and energy efficiency in logistics and manufacturing. The 1.1 kW low overload rating is suitable for various light to medium-duty conveyor applications. The IP20 rating ensures safe operation in dry, controlled indoor industrial environments. The integrated Safe Torque Off (STO) function provides critical safety for operators during maintenance or emergency stops.

Problem Solved

Provides precise speed control for varying product loads and production rates, reducing energy consumption during partial loads and enhancing operational safety with Safe Torque Off.

Variable Speed DriveConveyor ControlMaterial HandlingEnergy EfficiencySafe Torque Off (STO)1.1 kW Motor

2. Industrial Pump Control in HVAC Systems

The SINAMICS G120C can regulate the speed of pumps in heating, ventilation, and air conditioning (HVAC) systems, such as chilled water or condenser water pumps. By adjusting pump speed based on demand, it optimizes fluid flow, reduces energy consumption, and extends pump lifespan. The 0.75 kW high overload capacity is adequate for smaller to medium-sized pumps, while the IP20 rating fits indoor utility room installations.

Problem Solved

Optimizes pump operation to match variable flow demands in HVAC systems, leading to significant energy savings, reduced wear on mechanical components, and integrated safety via STO.

Pump ControlHVAC OptimizationVariable FlowEnergy Savings0.75 kW PumpSafe Torque Off (STO)IP20

3. Fan Control for Industrial Ventilation

This frequency converter is ideal for controlling the speed of fans in industrial ventilation or exhaust systems. By precisely adjusting fan speed, airflow can be matched to environmental requirements, improving air quality, controlling temperature, and significantly reducing power consumption. The 1.1 kW low overload rating supports a range of industrial fan sizes, and the IP20 enclosure is suitable for installation within control cabinets in manufacturing facilities.

Problem Solved

Enables efficient management of airflow in industrial ventilation to maintain optimal environmental conditions and achieve substantial energy savings, while the STO function enhances operational safety.

Fan ControlIndustrial VentilationAirflow ManagementEnergy EfficiencyIP20 ProtectionSafe Torque Off (STO)1.1 kW Fan

Siemens SINAMICS G120C 1.1kW Frequency Converter

Siemens SINAMICS G120C 1.1kW Frequency Converter

Technical Overview

Key Features

Technical Specification Matrix

Industrial Applications

1. Conveyor Belt Systems for Material Handling

2. Industrial Pump Control in HVAC Systems

3. Fan Control for Industrial Ventilation