Name: Siemens SINAMICS G120C 0.55kW Frequency Converter - INOSAKI
SKU: Siemens-6SL3210-1KE11-8UB2
Price: 292.22 USD
Availability: InStock

Technical Overview

Compact 3-phase AC frequency converter for 380-480V input, delivering up to 0.55kW. Features IP20, USS/MODBUS RTU, and integrated Safe Torque Off.

Key Features

Compact design for space-saving installation.
Integrated Safe Torque Off (STO) safety function (SIL 3 rated).
Supports USS/MODBUS RTU communication for seamless integration.
Unfiltered I/O interface: 6 digital inputs, 2 digital outputs, 1 analog input, 1 analog output.
Wide input voltage range of 380-480V (3 AC).
Optimized for pump, fan, and compressor applications.
High efficiency (η > 97%).
IP20/UL Open Type protection rating.
Output frequency for vector control up to 240 Hz, V/f control up to 550 Hz.

Technical Specification Matrix

Parameter	Value
Input Number of Phases	3 AC
Line Voltage	380 ... 480 V +10 % -20 %
Line Frequency	47 ... 63 Hz
Rated Current (LO)	2.30 A
Rated Current (HO)	1.90 A
Output Number of Phases	3 AC
Rated Output Voltage	400V IEC, 480V NEC
Rated Power (LO)	0.55 kW / 0.75 hp
Rated Power (HO)	0.37 kW / 0.50 hp
Rated Output Current (LO)	1.70 A
Rated Output Current (HO)	1.30 A
Max. Output Current	2.60 A
Pulse Frequency	4 kHz
Output Frequency (Vector Control)	0 ... 240 Hz
Output Frequency (V/f Control)	0 ... 550 Hz
Overload Capability (LO)	150% base load current IL for 3 s, then 110% for 57 s in a 300 s cycle time.
Overload Capability (HO)	200% base load current IH for 3 s, then 150% for 57 s in a 300 s cycle time.
Efficiency η	0.97
Sound Pressure Level (1m)	49 dB
Power Loss	33.5 W
Filter Class (integrated)	Unfiltered
Communication Interface	USS/MODBUS RTU
Standard Digital Inputs	6
Fail-safe Digital Inputs	1
Digital Outputs (Relay)	1 (DC 30 V, 0.5 A)
Digital Outputs (Transistor)	1 (DC 30 V, 0.5 A)
Analog / Digital Inputs	1 (Differential input, 10 bit resolution)
Analog Outputs	1 (Non-isolated output)
PTC/KTY Interface	1 motor temperature sensor input
Protection Rating	IP20/UL OPEN TYPE
Physical Weight (kg)	1.1
Dimensions L x W x H (cm)	22.5 x 27 x 8.5

Industrial Applications

1. Small Industrial Fan Control in HVAC Systems

This converter precisely controls the speed of a small industrial fan in a building's HVAC system. The 0.55 kW (LO) power rating is suitable for typical fan motor sizes, and the 380-480V input matches common industrial power supplies. The IP20 rating makes it suitable for installation within a protected control cabinet.

Problem Solved

Optimizes air flow and energy consumption in HVAC systems by allowing variable speed control of fans, leading to energy savings and improved climate control.

Variable Frequency DriveHVACFan ControlEnergy EfficiencyModbus RTU0.55kW380-480VIP20

2. Small Pumping Station for Water Treatment

The SINAMICS G120C can be used to control a small pump motor in a water treatment or wastewater facility. Its robust overload capacity (150% for 3s, 110% for 57s) allows it to handle temporary load spikes, and the Safe Torque Off (STO) function provides critical safety for maintenance personnel.

Problem Solved

Provides reliable and safe operation of pumps, allowing for flow rate adjustment and preventing damage from sudden load changes. The integrated STO function enhances operational safety in critical environments.

Pump ControlWater/WastewaterSafe Torque Off (STO)Overload Capability380-480V0.55kWIP20

3. Conveyor Belt Speed Regulation in Material Handling

This drive can regulate the speed of a small conveyor belt motor (e.g., in packaging or assembly lines) to synchronize with production processes. The digital and analog I/Os allow for integration with other control systems, and the vector control up to 240 Hz offers precise speed and torque control.

Problem Solved

Ensures smooth and synchronized material flow, preventing bottlenecks or damage to products on conveyor systems. The precise control capabilities improve process efficiency and flexibility in automated manufacturing.

Conveyor SystemsMaterial HandlingSpeed RegulationVector ControlDigital I/OModbus RTU0.37kWIP20