Technical Overview

Compact 18.5kW (LO) / 15.0kW (HO) 3-phase VFD with 380-480V input. Features IP20, integrated Class A filter, STO safety, PROFINET, and flexible I/O.

Key Features

Compact design with high power density, enabling installation in space-constrained control cabinets.
Integrated safety functions including Safe Torque Off (STO) to SIL2/PL d, preventing unintentional motor starts.
Energy-efficient sensorless vector control (SLVC) for optimal torque at low speeds and reduced energy consumption.
Integrated Class A EMC filter to minimize electrical noise and ensure compliance with industrial standards.
Supports PROFINET and EtherNet/IP for seamless integration into modern automation networks, with additional options for Modbus RTU, USS, and CANopen.
Fast installation and commissioning facilitated by user-friendly connections and pluggable terminals.
Capable of side-by-side mounting without derating, maximizing control cabinet space utilization.
Comprehensive I/O interface including 6 digital inputs, 2 digital outputs (relay/transistor), 1 analog input, 1 analog output, and 1 motor temperature sensor input.
Full integration into Siemens TIA Portal for intuitive programming and efficient engineering workflows.

Technical Specification Matrix

Parameter	Value
Input Voltage	3AC 380–480V (+10% / -20%)
Line Frequency	47–63 Hz
Rated Power (Low Overload - LO)	18.5 kW (25 HP)
Rated Power (High Overload - HO)	15.0 kW (20 HP)
Rated Output Current (LO)	37.00 A
Rated Output Current (HO)	31.00 A
Rated Output Current (IN)	38.00 A
Max. Output Current	62.00 A
Output Frequency (Vector Control)	0–240 Hz
Output Frequency (V/f Control)	0–550 Hz
Protection Class	IP20 / UL OPEN TYPE
Cooling Method	Air-cooled (internal fan)
Integrated Filter Class	Class A
Communication Interfaces	PROFINET, EtherNet/IP
Safety Functions	Safe Torque Off (STO) SIL2/PL d
Digital Inputs (Standard)	6
Digital Inputs (Fail-Safe)	1
Digital Outputs (Relay)	1
Digital Outputs (Transistor)	1
Analog Inputs (Differential)	1 (10 bit resolution)
Analog Outputs (Non-isolated)	1
Motor Temperature Sensor Input	1 (PTC/KTY compatible)
Pulse Frequency	4 kHz
Efficiency	0.97 (97%)
Power Loss	448.0 W
Operating Temperature	-10°C to +50°C
Physical Weight (kg)	5.5
Dimensions L x W x H (cm)	27 x 36.5 x 16

Industrial Applications

1. Precision Conveyor System Control

The Siemens SINAMICS G120C 6SL3210-1KE23-8AF1 provides precise speed and torque control for AC motors driving industrial conveyor belts, crucial for manufacturing and logistics operations. Its 18.5 kW power rating accommodates medium to heavy-duty material handling.

Problem Solved

Ensures smooth acceleration and deceleration of materials, prevents jams by optimizing flow rates, and enhances operational safety with integrated Safe Torque Off (STO) for immediate motor cessation during emergencies. PROFINET connectivity allows seamless integration into factory automation systems.

Variable Speed DriveConveyor BeltMotor ControlSafe Torque Off (STO)PROFINETEnergy Efficiency

2. Energy-Optimized Industrial Pump and Fan Regulation

Ideal for regulating the flow and pressure in various pump applications or controlling airflow in industrial ventilation and fan systems. The drive's 18.5 kW capacity suits a broad range of medium-sized industrial fluid and air handling equipment.

Problem Solved

Delivers significant energy savings by adjusting motor speed to match demand, reducing wear and tear on mechanical components like valves and bearings. The IP20 rating ensures suitability for control cabinet installation, protecting the drive in typical industrial environments.

Variable Frequency DrivePump ControlFan ControlHVACEnergy OptimizationIP20Process Control

3. Controlled Mixing and Agitation in Process Industries

This VFD is perfectly suited for driving agitators and mixers in process industries, such as chemical processing, food and beverage, or pharmaceutical manufacturing, where controlled mixing speeds and torques are essential.

Problem Solved

Enables precise recipe control by accurately varying mixing speeds, crucial for product quality and consistency. Its overload capabilities (150% for 3s, 110% for 57s LO) prevent motor damage during high-viscosity conditions, and the integrated Class A EMC filter ensures reliable operation in electrically noisy industrial settings.

Mixer ControlAgitatorTorque ControlOverload CapabilityEMC FilterProcess AutomationRecipe Management

Siemens SINAMICS G120C 18.5kW PROFINET Variable Frequency Drive

Siemens SINAMICS G120C 18.5kW PROFINET Variable Frequency Drive

Technical Overview

Key Features

Technical Specification Matrix

Industrial Applications

1. Precision Conveyor System Control

2. Energy-Optimized Industrial Pump and Fan Regulation

3. Controlled Mixing and Agitation in Process Industries