Siemens SINAMICS G120C 90kW Variable Frequency Drive

Technical Overview

Compact 90kW VFD with 380-480V 3AC input, PROFINET, EtherNet/IP, Safe Torque Off, and IP20 protection.

Key Features

PROFINET-PN and EtherNet/IP integration for seamless communication in automation systems.
Integrated Safe Torque Off (STO) for enhanced safety in machinery applications.
Unfiltered I/O interface comprising 6 digital inputs, 2 digital outputs, 1 analog input, and 1 analog output.
Compact design (708x305x357 mm) suitable for space-constrained installations.
Operates on a 380-480 V 3-phase AC supply, supporting a wide frequency range of 47-63 Hz.
IP20 / UL open type degree of protection for control cabinet mounting.
Energy-efficient operation for optimized power consumption.

Technical Specification Matrix

Parameter	Value
Input Voltage (3AC)	380-480 V (+10% / -20%)
Input Line Frequency	47-63 Hz
Rated Power (LO)	90.0 kW (100 hp)
Rated Current (LO)	164.00 A
Max Output Current	272 A
Output Frequency (V/f Control)	0-550 Hz
Overload Capability (LO)	150% base load current for 3s, then 110% for 57s in a 300s cycle
Degree of Protection	IP20 / UL open type
Communication Interface	PROFINET, EtherNet/IP
Digital Inputs	6
Digital Outputs	2
Analog Inputs	1
Analog Outputs	1
Safety Function	Safe Torque Off (STO) integrated
Cooling	Air-cooled (integrated fan)
Ambient Temperature (Operation)	-20 to 40 °C (-4 to 104 °F)
Physical Weight (kg)	59
Dimensions L x W x H (cm)	74.5 x 46.9 x 38.5

Industrial Applications

1. High-Power Conveyor Systems

This drive can precisely control large conveyor belts in manufacturing or logistics, handling heavy loads and ensuring smooth acceleration and deceleration of materials.

Problem Solved

Provides robust motor control for 90 kW motors, preventing sudden stops or starts that could damage products or machinery. Its 150% overload capacity for 3 seconds allows it to manage peak loads during startup or sudden accumulation of material on the conveyor. PROFINET integration enables seamless synchronization with other automation components.

Variable Frequency DriveMaterial HandlingMotor ControlPROFINET90 kWOverload Capacity

2. Industrial Pump and Fan Control in HVAC Systems

Ideal for optimizing the speed of large industrial pumps and fans in HVAC systems, water treatment plants, or ventilation systems to match demand, leading to significant energy savings.

Problem Solved

Enables variable speed control of 90 kW pumps and fans, which reduces energy consumption by operating motors only as fast as required, especially beneficial in dynamic load applications. The IP20 rating is suitable for control cabinet mounting, protecting against dust in a plant environment.

HVACPump ControlFan ControlEnergy EfficiencyVariable SpeedIP20

3. Extrusion Machine Speed Regulation

Used to precisely regulate the speed of the screw in large industrial extrusion machines for plastics or food processing, ensuring consistent product quality and throughput.

Problem Solved

Offers fine-tuned speed and torque control for 90 kW extrusion motors, critical for maintaining uniform material flow and product consistency. The 0-550 Hz output frequency allows for a wide range of operational speeds, and Safe Torque Off (STO) provides a reliable safety function for immediate motor stoppage in emergencies, crucial for operator safety and machine protection.

ExtrusionTorque ControlSpeed RegulationSafe Torque Off90 kWProcess Control