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Synapticon > Products > SOMANET Node


SOMANET Node Servo Drive is ultra-compact, high performance and embeddable. It features the highest current density in the market. It comes fully equipped with all direct connectors, many feedback interfaces, complete protection, frameless EMC, certified functional safety and second to none integration support.

Smart algorithms for superior performance with any motor or gearbox

Synapticon’s proprietary control technologies, such as Model-predictive Deadbeat Field-oriented Control, allow a low heat dissipation of the drives while keeping up very high motion control performance. Advanced disturbance compensation, e.g. for sensor noise, non-linearities in motor and gearbox as well as cogging torque, enable high quality motion even with medium to low cost motors and sensors.

Ultra compact servo drive

SOMANET Node series is a family of ultra-compact, super-efficient and high-performance servo drives that support all PMSM / Synchronous AC / BLDC motors up to 60V and 100A / 66Arms and feature an EtherCAT interface with CiA DS 402 protocol.

All functions of the SOMANET Node series can be configured and tuned with OBLAC Tools, a simple to use yet powerful commissioning and motion tuning tool suite.

SOMANET Node Safety features TÜV-certified STO and SBC functions at SIL3 PLe level.


Decentralize to become cabinet-free

Synapticon’s servo drives are among the most compact power electronics in the world. The drives can be integrated right next to the motors in a robot arm or inside a servo motor. Safety functions, and additional sensors can be integrated and the number of wires is reduced from hundreds to only six: one DC power bus and one communication line. Expensive shielding and wear protection becomes obsolete. Cables never need to be maintained again. Product design becomes simpler. Robot or machine system cost reduces.

Extra-low voltage for the leading-edge

Mobile robots run on batteries. Collaborative robot arms need to be intrinsically safe for humans. Beyond these reasons for safe-voltage (< 60 Volt) over higher voltage drives, comes Synapticon's progressive, miniaturized inverter designs that use the most advanced power switches available. 

High-definition measurements for great efficiency

Who sees more is in better control: High-speed and high-resolution motor phase monitoring is the base for Synapticon’s Model-Predictive Field-Oriented Motor Control technology. Constantly computing a model of the connected motor, this software always holds a spectrum of control strategies to adopt to the current load situation and perfectly respond to the motor’s exact geometry. The result: perfectly smooth and quiet drives as well as lowest heat-dissipation.

Intelligence to the drives

Synapticon drives can interface to a broad range of feedback encoders, torque and force sensors or even can read touch-sensitive skins and interpret LiDAR data (custom solutions). As they also allow advanced users to run custom software code locally, the computation of kinematic functions and the implementation of local reflexes based on sensor events and custom algorithms become possible on the servo drive.


 A SOMANET Node consists of three Modules: Communication (Com), Processor (Core) and Drive Module. For each of these Modules, there are several standard options available. Custom Modules can be designed upon special request. The safety module is included in Node Safety.


With Synapticon‘s OBLAC Drive tool suite, configuring and tuning a SOMANET Node to work with any PMSM / Synchronous AC / BLDC motor up to 60V and 100A / 66Arms by any manufacturer and any feedback sensor is as easy as 1-2-3.

OBLAC Drives Auto-Tune Testing Gif


The easiest way to evaluate SOMANET servo drives. The Kit contains a SOMANET Node of desired power rating (20 – 100 A), cables, a handy box and optionally an OBLAC Drives Box. It allows you to test SOMANET with permanent magnet synchronous motors (PMSM/BLDC) of various sizes up to 2000 W (48V/66Arms) and integrate them as slaves in your EtherCAT system.

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Intelligence inside: Integrated servo motors which are built by various motor manufacturers and automation platform vendors based on SOMANET Node series of ultra-compact, high-performance servo drives.

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There can be many reasons why a standard servo drive doesn’t fit an application. Special feature requirements that are not covered by standard SOMANET drives, low-cost targets particularly in mass applications, need for tight mechanical integration: Synapticon‘s SOMANET Motion Cores, being also at the heart of a standard SOMANET drive, enable for custom designs. Synapticon’s Custom Design Services are there to carry out this development for you fast and efficiently. High-volume customers have the option to perform design and production of custom SOMANET solutions in-house with own resources: SOMANET hardware and software source files are being made available to such clients and SOMANET Motion Cores are supplied to their in-house production.

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SOMANET Node – a Servo Drive for integration

A servo drive is a type of drive technology commonly used in robotics. Servo drives enable robots to perform precise and fast movements. They are able to control and regulate the position, velocity and acceleration of a robot arm or leg.

A servo drive consists of three main components: a motor, a controller and a feedback system. The motor generates the motion, while the controller ensures that the motions are executed precisely and at the desired speed. The feedback system provides the controller with information about the current position and speed of the motor so that it can adjust the movements accordingly.

There are several types of servo drives that differ in the type of motor, the type of controller, and the feedback system. For example, some servo drives use a brushless DC (BLDC) motor, while others use a stepper motor. Each type of servo drive has its own advantages and applications.

One of the most important applications of servo drives in robotics is motion control. Servo drives enable robots to perform precise and fast movements, and this allows robots to be used in many industries, such as automotive, electronics, and packaging.

Overall, servo drive is an indispensable technology in robotics that enables robots to perform precise and fast movements, thus increasing productivity in many industries.