Technical Overview

Compact VFD for 380-480V 3AC, 5.5kW (LO) / 4.0kW (HO) motor control with IP20 protection, integrated STO, and PROFIBUS DP communication.

Key Features

3-phase AC input voltage: 380-480 V +10% / -20% (Line voltage), 47-63 Hz line frequency.
Output rated voltage: 400V IEC / 480V NEC for 3-phase AC motors.
Low Overload (LO) capability: 150% base load current for 3s, then 110% for 57s in a 300s cycle.
High Overload (HO) capability: 200% base load current for 3s, then 150% for 57s in a 300s cycle.
Integrated unfiltered design.
Communication via PROFIBUS DP.
Integrated I/O interface: 6 standard digital inputs, 1 fail-safe digital input, 1 relay digital output, 1 transistor digital output, 1 differential analog input, 1 non-isolated analog output, 1 motor temperature sensor input (PTC/KTY).
Protection class IP20 / UL Open Type.
Supports vector control (0-240 Hz) and V/f control (0-550 Hz) for versatile motor speed regulation.
Compact FSB frame size with dimensions of 196 x 100 x 203 mm (H x W x D).

Technical Specification Matrix

Parameter	Value
Input Voltage	380-480 V AC (3-phase, +10% / -20%)
Line Frequency	47-63 Hz
Rated Power (Low Overload)	5.50 kW / 7.50 hp
Rated Power (High Overload)	4.00 kW / 5.00 hp
Rated Input Current (LO)	16.50 A
Rated Input Current (HO)	12.80 A
Rated Output Current (LO)	12.50 A
Rated Output Current (HO)	8.80 A
Max Output Current	17.60 A
Output Frequency (Vector Control)	0-240 Hz
Output Frequency (V/f Control)	0-550 Hz
Pulse Frequency	4 kHz
Efficiency	0.97
Power Loss	169.0 W
Filter Class	Unfiltered (integrated)
Communication Interface	PROFIBUS DP
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 Inputs	1 (Differential, 10-bit resolution)
Analog Outputs	1 (Non-isolated)
Motor Temperature Sensor Input	1 (PTC, KTY)
Safety Function	Integrated Safe Torque Off (STO)
Protection Class	IP20 / UL Open Type
Frame Size	FSB
Physical Weight (kg)	2.7
Dimensions L x W x H (cm)	26 x 25.5 x 12.5

Industrial Applications

1. Conveyor Belt Systems

This inverter is ideal for controlling the speed of motors in conveyor belt systems, ensuring precise material flow and energy efficiency. Its 5.5 kW low overload rating and wide output frequency range allow for dynamic adjustments to conveyor speed.

Problem Solved

Provides precise and energy-efficient speed control for conveyor motors, enhancing production line flexibility and safety through integrated STO.

Variable Speed ControlConveyor SystemsEnergy EfficiencySafe Torque Off (STO)Vector Control3-Phase Motor Control

2. HVAC Fan and Pump Control

The SINAMICS G120C can effectively regulate the speed of fans and pumps in Heating, Ventilation, and Air Conditioning (HVAC) systems. This optimizes energy consumption and maintains desired environmental conditions by matching motor output to demand.

Problem Solved

Enables demand-driven operation of HVAC fans and pumps, reducing energy consumption and providing precise environmental control due to its V/f and vector control capabilities.

HVAC SystemsPump ControlFan ControlEnergy OptimizationV/f Control380-480V AC

3. Industrial Mixer and Agitator Drives

For process industries requiring controlled mixing or agitation, this compact inverter offers the precision and power needed. The 4.0 kW high overload capability ensures robust performance even with fluctuating loads, while PROFIBUS DP allows integration into automated batch processes.

Problem Solved

Delivers reliable and precise speed control for industrial mixers, handling variable loads with high overload capacity and integrating seamlessly into automated processes via PROFIBUS DP.

Process ControlMixer DrivesAgitatorsHigh Overload CapabilityPROFIBUS DPIndustrial Automation

Siemens SINAMICS G120C Compact Inverter 5.5kW

Siemens SINAMICS G120C Compact Inverter 5.5kW

Technical Overview

Key Features

Technical Specification Matrix

Industrial Applications

1. Conveyor Belt Systems

2. HVAC Fan and Pump Control

3. Industrial Mixer and Agitator Drives