SINAMICS G120X drives: Less complex – more reliable

Maybe it's the simplest thing a variable speed drive does.
But since it happens more than anything else - wouldn't you want the best?

X Marks the Spot

We don't have to tell you that on any given day there's more water and air moved than anything else. And it sure seems simple: turn on the pump and move the water / turn on the fan and move the air. Howon earth could anyone improve on that?

Siemens did.



Seamless design, simple to order, easy to setup

Time savings

Cost efficient, energy efficient

Reduce overall cost of ownership

Robust, reliable. New UL61800-5-1 design with coated boards

Longevity, reduced downtime, can better stand harsh environments

Application / industry segment savvy

Developed for US pump, fan, compressor applications - water/wastewater, HVAC / refrigeration, irrigation, etc.

Ready for digitalization

More efficient system integration, monitoring, service

In developing the world's leading equipment control for industrial solutions, Siemens continues to explore and develop new ways of making even the most basic processes more efficient and cost-effective.

From the immensely successful SINAMICS G120 family of drives, the G120X is an “infrastructure” drive targeted for pump, fan & compressor applications in the Water & Wastewater (W&WW), HVAC, irrigation/agriculture & industrial chiller/refrigeration segments.

SINAMICS G120X is simple, seamless, cost & energy efficient, robust, reliable and fit for digitalization. SINAMICS G120X easily integrates into existing applications, works with any standard motor (induction, synchronous and synchronous reluctance motor) and can be configured for cost-optimization and resource-saving operation which ultimately helps reduce total cost of ownership. It meets all the latest industry standards with regard to energy efficiency and product safety and offers enhanced safety with SIL3 rated safety functions and up to 100kA short-circuit current rating according to UL61800-5-1.

SINAMICS G120X meets all the latest industry standards with regard to energy efficiency and product safety and offers enhanced safety with SIL3 rated safety functions and up to 100kA short-circuit current rating according to UL61800-5-1.

Get a video overview of SINAMICS G120X's benefits

Features that bring new levels of simplicity and reliability

Simple, seamless - an “out of the box” offering

Wide power and voltage ranges up to 700 hp (630 kW) with same look, feel and user interface

Fast and simple ordering process with a single catalog number (article number) to order a complete drive with control unit and a high resolution graphical color keypad  - the Intelligent Operator Panel (IOP-2) – in a single box

Simple setup on the IOP-2  to run a motor of matching power rating

Cost- and energy-efficiency

Significant time-savings

Integral DC choke (FSA-G) eliminates the requirement of an external line reactor

Control unit has been redesigned:

Designed to deliver constant power at a current according to NEC table 430.250 at 3AC 480V and 600V, and at an operating temperature of 45ºC without derating, and up to 60 ºC (55 ºC with PROFINET, EtherNet/IP™ version) with derating


To accept 16 AWG (1.5mm 2) wire with removable connectors for easy and fast control wiring via pre-manufactured wiring harness

Increased motor cable lengths up to 450 meters (1476 ft)1 without output choke or filter


To allow 2x wire connections per terminal for certain terminals for ease of connections

New design feature enables UL Open Type / IP20 drive to use an optional add-on Push-Through (PT) kit 2, which reduces or eliminates need for cabinet fans, associated components and wiring, and also facilitates cost efficient NEMA / UL Type 1, 12 or 3R designs with an appropriately NEMA / UL-rated external enclosure

Frame sizes A–C are redesigned to fit in the standard MCC plug-in type bucket

Robust and reliable

Dedicated to targeted solutions

Optional “special” coating (Class 3C3) on the power boards for operation in harsh environments (where corrosive gases such as Hydrogen Sulfide (H 2S) are present)

Built-in features and functions dedicated to industrial pump, fan and compressor applications

Improved EMC and grid (harmonics) performance due to integral DC choke (FSA-FSG, up to 400 hp / 250 kW)

Provides enhanced product safety through UL61800-5-1 certification (CULUS) up to 100kA SCCR which makes SINAMICS G120X exclusive in the industry for the focused segments — i.e. industrial pump, fan and compressor, water / wastewater, HVAC and irrigation markets

Standard warranty 24 months and an additional 6 months with product registration

Hardware-based SIL3-rated Safe Torque Off (STO) with a switch to activate or deactivate this safety function

Ready for digitalization

Wi-Fi enabled Smart Access Module (SAM) for convenient, user-friendly setup and diagnostics

SINAMICS Connect 300 for cloud-based analytics

Communication via PROFINET, EtherNet/IP

TIA portal via GSD file

1For unfiltered version with unshielded motor cables. Frame sizes A/B/C/D/E: 300m, F/G: 450m, H/J: 200m

2Planned release with UL certification in 2019

Technical specifications


Supply voltage

Power range

Frame sizes

3AC 380V (-20%) ... 480V (+10%)

1 – 400 Hp
(0.75 – 250kW)

A - G

3AC 380V (-15%) ... 480V (+10%)

400 – 700 Hp
(315 – 560kW)

H, J

3AC 500V (-20%) ... 690V (+10%)

4 – 250 Hp
(3 – 250kW

D - G

3AC 500V (-15%) ... 690V (+10%)

350 – 700 Hp
(315 – 630kW)

H, J

Efficiency (η)

98%  (Efficiency class IE2 according to EN 50598-2)

Control methods

• V/Hz control (linear, linear with flux current control/FCC, parabolic and eco mode)
• Sensorless less vector control (SLVC)



Supported motor types

Asynchronous (induction), permanent magnet synchronous (PMSM), synchronous reluctance (SRM)

Degree of protection

IP20 / UL Open Type

Short-circuit current rating (SCCR)

Up to 100kA



• Deragging or Blockage Protection
• Pipe filling

• Multi-pump control: Pump switchover, Stop mode, Service mode, Cascade control mode

• Blockage, leakage & dry-running protection
• Cavitation protection
• Condensation protection
• Frost protection


• Flying restart
• Automatic restart

• Skip frequency bands
• Fire mode (Essential service mode)

• No load, torque & rotation (belt) monitoring with sensor

Optimization, availability

• Keep running mode
• PID controller

• Dual Ramp

• Multispeed setpoints


• Eco mode
• Hibernation or sleep mode

• Bypass mode
• Energy / flow calculator

• Real time clock
• Programmable timer (3)


• Phase-loss detection (for supply and motor both)
• Overvoltage controller
• Undervoltage controller
• Drive overtemperature protection
• Loss of analogue input signal monitoring
• External fault and warning monitoring
(up to 3)

• Motor overtemperature protection (with and without sensor)
• Motor overload monitoring and protection
• Motor short circuit and ground fault protection
• Speed and torque monitoring

• Blocking & stalling monitoring and protection
• Detection of missing communication telegrams
• Detection of communication bus interruption

Certification / Marking

CULUS marking according to UL61800-5-1,
CE marking according to European LowVoltage Directive 2014/35/EU, Machinery directive 2006/42/EC, EMC Directive 2014/30/EU, RoHS directive 2011/65/EU
Safe Torque Off (STO) SIL3 rating according to IEC/EN 61800-5-2
• EAC, KC, C-Tick

More detailed specifications may be found...

Typical Applications




Water / Wastewater


Power Plants, e.g., cooling water pumps or boiler feed pumps

Climate control / HVAC

Tunnel ventilation

Power Plants, e.g., forced or induced draft fans


Industrial chillers