Multifunctional, space-saving & rugged

vector drives - sinamics g120 in cabinet

SINAMICS G120 modular vector drives

The SINAMICS G120 family of closed-loop vector drives offers high levels of integrated safety, energy savings, and network connectivity. Available in three voltage variants for connection to 200, 400 and 690V with power ratings from ½ to 400 Hp (0.37 to 250 kW), this modular and scalable standard drive may be configured in a wide variety of designs to meet a vast array of industrial drive applications. In addition, built-in math and logic eliminate the need for a separate PLC. The EN 60204 safety functions of the SINAMICS G120 are fully integrated into the drive and include Safe Torque Off, Safe Stop 1, Safety Limited Speed and Safe Brake Control. As a result, production plants obtain greater levels of safety while requiring less overhead to integrate the drives into fail-safe, automation, and drive environments. The SINAMICS G120 vector drive also complies with NFPA 79-2007

Learn more about SINAMICS G120

Download the SINAMICS G120 brochure


The world's leading standard performance drive continues to grow

Overview of strengths

Diverse. Modular. Efficient. Safe.

SINAMICS G120, the multifunctional drive for virtually any industrial task.
Typical applications


The modular variable frequency drive is suitable for the following applications.

Technical introduction to SINAMICS G120

Blocksize component drive
Supply voltage / power range
1AC 200 – 240V ± 10% : 0.75 – 5 Hp (0.55 – 3.75 kW)
3AC 200 – 240V ± 10% : 7.5 – 75 Hp (5.5 – 55 kW)
3AC 380 – 480V ± 10% : 0.75 – 400 Hp (0.55 – 250 kW)
3AC 500 – 690V ± 10% : 10 – 125 Hp (11 – 132 kW)
Control methods


• V/f Control (General)

• With linear characteristic

• With parabolic characteristic

• Wth user defined characteristic

• With Flux Current Control (FCC)

• ECO linear/parabolic (ECO mode)

• Slip compensation field-oriented control of speed and torque with/without encoder


• Sensorless (SLVC)

• With encoder

• Droop

• Speed controller adaption

• Speed controller precontrol and reference model

• Open actual speed value

• Current controller adaption

• Fast magnetization for induction motors

• Bypass without synchronization

• Autom. controller tuning Vector

• Precontrol

 Functions in firmware / software

• BICO technology

• Free function blocks

• Integrated connection / application macros

• Optimized closed-loop control

• Parameter cloning

• Positioning capabillity with EPOS

• Ramp-function generator

• Technology controller 

• Timestamp for fault and alarm reports

• Web server / Smart Access

Braking functions

• Compound braking

• DC braking

• Dynamic braking

Efficiency / energy savings functions

• Automatic restart

•  Flying restart

• Kinetic buffering

• ECO mode

• Energy / flow calculator

• Hibernation mode

Drive protection functions

• Detection of communication bus interruption

• Detection of missing communication telegrams

• Drive overtemperature protection

• External fault and warning monitoring

• Know-how protection

• Loss of analogue input signal monitoring

• Overvoltage controller

• Undervoltage controller

• Write protection

Motor protection functions

• Blocking & stalling monitoring and protection

• Motor overload monitoring and protection

• Motor overtemperature protection

• Motor short circuit and ground fault protection

• Phase-loss detection (for both supply and motor)

• Speed and torque monitoring

Motor compatability
Degree of protection
IP20 (and UL Type 1 (with SINAMICS G120 wall-mount kits)
Selection / system configuration tools
Commissioning / engineering

• On-drive – operator panel

• Wi-Fi – Smart Access Module (opt.) (details below under Supplementary components)

• Computer – StartdriveSTARTER

• SD card

Other features

• Removable terminals

• Flexible mounting with UL-1 wall-mount kit and push-through option

• Integrated braking chopper

• Power regeneration capability

• Harsh environment options

Integrated safety technology
Standards compliance
UL, cUL, CE, C-Tick (RCM), SEMI F47
Supplementary components

It's all about modularity: mix & match with a host of combination options

The Control Unit controls and monitors the Power Module and the connected motor using multiple selectable closed-loop control types. It supports communication with a local or central controller and monitoring devices. The Power Module supplies the motor in a power range from 0.75 to 400 Hp (0.55 to 250 kW.) It features state-of-the-art IGBT technology with pulse width modulation for extremely reliable and flexible motor operation. Comprehensive protection functions provide a high level of protection for the power module and the motor.

Siemens offers a wide range of Power Modules for the most diverse drive requirements.

Using the latest power component technology, the PM240-2 Power Modules offer many benefits not seen before in general purpose variable frequency drives (VFDs). With higher power densities, matching control units and operator panels, enhanced vector control, basic positioning capabilities, the new G120 proves to be a best-in-class VFD.


The industry-leading power module for standard applications in mechanical engineering. PM240-2 includes a braking chopper (four-quadrant applications) and is suitable for a large number of applications in general mechanical engineering. 


Power module PM240-2 is available for the following voltage and power ranges:

  • 1 AC 200 – 240V:         0.75 – 5 Hp (0.55 – 4.0 kW)
  • 3 AC 200 – 240V:         7.5 – 75 Hp (5.5 – 55 kW)
  • 3 AC 380 – 480V:     0.75 – 400 Hp (0.55 – 250 kW)
  • 3 AC 500 – 690V:     15 – 250 Hp (11 – 250 kW)

The push-through configuration includes the same features as the built-in versions, but dissipate the majority of the heat loss outside the control cabinet. The modules come in six frame sizes FSA - FSF and are available for the following voltage and power ranges:

  • 3 AC 200 - 240V:     1, 3, 5, 25, 40, 75 Hp (0.75, 2.2, 4, 18.5, 30, 55 kW)
  • 3 AC 380 - 480V:     4, 10, 20, 50, 75, 175 Hp (3, 7.5, 15, 37, 55, 132 kW)

The ideal power module for requirements with regenerative power feedback. This means that any braking energy is directly fed back into the supply system (four-quadrant applications – a braking chopper is not required).


The PM250 power module is available for the following voltage and power ranges:

  • 3AC 380 – 480V ±10%:  10 – 125 Hp (7.5 – 90 kW)

The Control Unit (CU)
 controls and monitors the power module and the connected motor in several selectable operating modes. It supports communications to a local control as well as to monitoring devices and equipment networks ensure exceptional drive performance that may be integrated to the field level. In addition to control functions, the CU can also perform other tasks which can be adapted to the relevant application by parameterization. Siemens has designed several CUs for the SINAMICS G120 focusing on various applications.

Including expanded I/O quantity structure, this is ideal for encoderless applications with safety requirements.

This unit is especially suitable for drives with high speed and torque accuracy requirements, when paired with an encoder feedback. The I/O interface, the fieldbus interfaces, and the additional software functions are perfect for these applications.

The unit's I/O interface, fieldbus interfaces, and additional software functions make it especially suitable for drives with integrated technology functions for pump, fan and compressor applications. 

With SINAMICS accessories, you further increase the operation and control capabilities of SINAMICS G120.

Web-based operator panel with wireless client connection
for mobile commissioning, diagnostics, service


With the SINAMICS G120 Smart Access Module, wirelessly connect your mobile devices (smartphone, tablet, laptop) via WiFi to the SINAMICS G120 drive, providing a powerful tool with numerous functions for wireless commissioning, diagnostics and service. The module is set up in just a few steps. With its web server function, no installation or downloading of additional software are required – a standard web browser and a commercially available operating system are all you need. The user interface of the SINAMICS G120 Smart Access Module is simple and intuitive in its configuration and use.


The Smart Access Module is available as an additional option for all SINAMICS G120 control units..

  • Quick commissioning – mobile and smart
  • Motor test – setting and changing motor speed
  • Simple maintenance and diagnostics
  • All parameters and settings at a glance
  • Storing and sharing of drive data
Learn more about Smart Access for SINAMICS G120

Download the brochure

Intelligent operator panel for direct connection to the drive

for local operation, monitoring, setup, diagnostics, service


The mounted IOP-2 Intelligent Operator Panel and its remote handheld version allow fast local setup, fault diagnostics and intuitive operation of SINAMICS G120 drive series and simplifies the adjustment of settings during operation. It features an intuitive central multifunctional sensor control wheel.


There are three methods of using the IOP-2: Directly plugging it into the control unit of the drive, mounting in the door for operation outside the control cabinet, and as an IOP handheld unit for wired operation in difficult-to-access locations.


The IOP-2 is available as an additional option for the SINAMICS drive series G120, G120X, G120C, G120D, G110M and SIMATIC ET 200pro FC-2

  • High-contrast color display with a range of display options
  • Fast series commissioning
  • Simple configuration of an Ethernet-based fieldbus interface
  • Fast access to product information about the current drive system
  • Direct contact with Customer Support via the Siemens Industry Online Support App
  • Simple connection to mobile devices (e.g. smartphones, tablets) via two-dimensional code (data matrix or QR code)

Basic operator panel for direct connection to the drive

for local operation, monitoring, commissioning, diagnostics


The menu-based operation and 2-line display of the BOP-2 Basic Operator Panel facilitate local commissioning of the SINAMICS G120 drive series. Simultaneous display of the parameter and parameter value, as well as parameter filtering, means that commissioning of a drive can be performed easily and, in most cases, without a printed parameter list.


The BOP-2 is available as an additional option for the SINAMICS G120 drives series.

  • Direct local operation of the drive
  • Simple switchover between automatic and manual operation
  • Standard commissioning using the clone function
  • 2-line display for showing up to 2 process values with text
  • Diagnostics with menu prompting with 7-segment display
  • Door mounting kit, can be mounted in the control cabinet door (achievable degree of protection is IP54/UL Type 12)

 SINAMICS G120 wall mount kits allow simple, direct mounting of G120 modular and G120C compact PM240-2 drives. Designed for use with the latest SINAMICS drives, these low-cost kits are easy-to-install and conform to NEMA 1 and UL Type 1 standards.


Available in power ranges from ½ to 200 hp, and for voltages from 230V to 690V, the streamlined, compact design is consistent for all frame sizes and provides for simple interior mounting.

  • Accommodates all SINAMICS G120 / G120C / PM240-2 / PM240P-2 power modules, control units and operator panels
  • Standardized design 
    for optimum space utilization and for efficient side-by-side mounting with minimal clearances
  • Multiple conduit knockout holes 
    for separate power, motor, I/O and network cabling
  • Built-to-last construction
    featuring galvanized steel 3-sided covers, mounting brackets and a rugged plastic window for BOP / IOP access

An overview of further supplementary system components for SINAMICS G120, such as

  • Line filters and reactors
  • Braking resistors
  • Output Reactors
  • Memory cards
  • (Safe) Brake Relay
  • Shield connection kits and plates
  • Adapters for installation on standard mounting rail
  • PC connection kit
vector drives - digitalization

How do SINAMICS drives do digitalization?

Whether virtualization and simulation, dimensioning and configuration, connectivity, data analysis, or services – digitalization gives you access to greater efficiency and reliability in planning, operation, and maintenance.​


Get the most out of your drive data with digitalization​

The digitalization portfolio for drive technology offers everything from digital twins of products, selection and engineering tools, and connectivity solutions to analysis apps and data-based services. These solutions permit optimized development processes, demand-oriented maintenance planning and ensure higher productivity.

Downloads and support

More about SINAMICS G120

Modular vector drive system

Mobile. Clever. Faster.

Via the SINAMICS G120 Smart Access Module, you can wirelessly connect your mobile devices (smartphone, tablet, laptop) via Wi-Fi to the SINAMICS G120, G120C and G120X converter series. This provides you with a powerful tool with numerous functions for wireless commissioning, diagnostics, and service.

SINAMICS G120 in America

The SINAMICS G120 is being successfully used in numerous projects across the USA. Here are some examples.

Easy configuration and ordering

Configure and order your SINAMICS G120

You can easily and quickly configure the SINAMICS G120 with the Siemens Drive Technology configurator and then order it via the Industry Mall ordering system.