DE
IT
Save Space
More space in the control cabinet.
The power electronics are located on the motor. A separate motor driver in the control cabinet is no longer needed.
STEPPER MOTORS
WITH INTEGRATED CONTROL
Compact. Decentralized. Directly integrable.
Stepper motors with integrated control
for your positioning task.
Motor, power electronics, and positioning controller in a single unit—from NEMA 17 to NEMA 34, with holding torque from 0.5 to 12 Nm.
As a manufacturer, GUNDA develops and produces integrated stepper motors in-house for machine building, industrial automation and precise positioning tasks. Colibri drives reduce wiring effort, save space in the control cabinet and simplify commissioning. Colibri 4.0 is available with PROFINET, EtherCAT or EtherNet/IP, depending on the version.
Select the size, housing type, and interface. Configure available models in the shop or discuss your requirements directly with us.
What You Gain in Mechanical Engineering
Your benefits with integrated stepper motors.
Less wiring
Shorter distances to the axis.
The motor and power electronics are already connected—for less wiring effort in the machine design.
Easy commissioning
Set parameters precisely.
With Colibri Studio, you can set parameters and perform test runs via USB or Ethernet.
Decentralized motion
Positioning functions in the drive.
Motion functions are executed directly in the drive—tailored to decentralized machine concepts.
Reduce effort
Fewer separate components.
The motor, controller, and power electronics form a single unit. This simplifies planning and installation.
Customized solutions
In-house development and manufacturing.
In-house development and manufacturing ensure quick response times for technical questions and custom requirements.
Colibri 4.0 · Stepper motors with integrated controller
Compare integrated stepper motors
from NEMA 17 to NEMA 34.
From the NEMA 17 stepper motor to the high-torque NEMA 34 compact drive: Compare technical specifications and then select your model in the store.
Still unsure? We’ll help you make your selection →| FIVE SERIESA direct comparison. |  |  |  |  |  |
|---|---|---|---|---|---|
| 01 / Size and Power | |||||
| NEMA Size | 17 | 17 | 23 | 24 | 34 |
| Flange Size · mm | 42 × 42 | 42 × 42 | 57 × 57 | 60 × 60 | 86 × 86 |
| Holding torque · Nm | 0.5 | 0.5 | 0.6 / 1.2 / 2 | 3 | up to 12 |
| Design / Connections | Inline | Standard / Compact | Standard / Compact | Standard / Compact | Standard / Compact |
| Connection direction | Radial or axial | Standard: toward the shaft Compact: upward | Standard: toward the shaft Compact: upward | Standard: toward the shaft Compact: upward | Standard: toward the shaft Compact: upward |
| Motor output stage voltage | 24–48 VDC | 24–48 VDC | 24–48 VDC | 24–48 VDC | 24–48 VDC |
| 02 / Integrated Technology and Communication | |||||
| Positioning Control + Power Electronics | ✔ | ✔ | ✔ | ✔ | ✔ |
| Incremental encoder | ✔ | ✔ | ✔ | ✔ | ✔ |
| PROFINET / EtherCAT / EtherNet/IP¹ | Option | Option | Option | Option | Option |
| CANopen¹ | Check version | Option | Option | Option | Check version |
| 03 / Options for Your Application | |||||
| Brake | —Not available | —Not available | Option | Option | Option |
| Multiturn absolute encoder | Option | Option | Option | Option | Option |
| Planetary gearbox | Option | Option | Option | Option | Option |
| STO safety function | Upon request Check version | Option | Option | Option | Option |
| Data sheet · PDF | |||||
| Your next step | NEMA 17 INLINE Select in the store ↗ | NEMA 17 Select in the store ↗ | NEMA 23 Select in the store ↗ | NEMA 24 Select in the store ↗ | NEMA 34 Select in the store ↗ |
✔ Standard✔ Option Optionally available— Not availableCheck version: no blanket approval
¹ Select the interface version that matches your PLC. The listed protocols are not automatically included simultaneously. Additional options depend on the size and product variant.
Housing types shown: Standard, Compact, and Inline
Housing type and connection orientation
Suitable for the installation space and cable routing.
For NEMA 17, NEMA 23, NEMA 24 and NEMA 34, choose a standard or compact housing. The NEMA 17 Inline offers radial or axial connections.
Holding torque is not the same as operating torque.
To size your stepper motor with integrated control, consider speed, load, acceleration and duty cycle. Check the torque-speed curve in MotorFinder or work with us to select the right drive.
Select · configure · request a quote
Your integrated stepper motor.
The models in detail.
Select your series. You can then specify the motor length, housing type, and interface in the shop or in consultation with us.
NEMA 17 · Integrated Stepper Motor
Colibri 17 4.0 INLINE
For compact positioning axes and devices with limited installation space. Inline design with radial or axial connections.
Holding torque0.5 Nm
NEMA 17 · Integrated stepper motor
Colibri 17 4.0
The compact NEMA 17 stepper motor with controller for small machines, devices, and laboratory automation.
Holding torque0.5 Nm
NEMA 23 · Integrated Stepper Motor
Colibri 23 4.0
For feeders, handling axes, and industrial positioning tasks. Three motor lengths to choose from.
Holding torque0.6 / 1.2 / 2 Nm
NEMA 24 · Integrated stepper motor
Colibri 24 4.0
For positioning tasks with 3 Nm holding torque. Choose a standard or compact housing to fit your installation space.
Holding torque3 Nm
NEMA 34 · Integrated Stepper Motor
Colibri 34 4.0
The NEMA 34 stepper motor with controller for adjustment and positioning axes requiring higher torque.
Holding torqueup to 12 Nm
Typical Areas of Application
Typical Applications for
Stepper Motors with Controllers.
Whether feeding, positioning, or adjusting: integrated stepper motors combine a compact design with industrial communication. Load, motion profile, and installation space are crucial for selecting the right motor.
Positioning
Machines and automation.
For feeding systems, handling axes, and positioning movements with repeatable positions.
Space-saving
Devices and laboratory automation.
Compact, integrated stepper motors for limited installation space and short cable runs.
Integrate
Decentralized axis systems.
Motor, electronics, and communication directly on the axis—coordinated with the higher-level controller.Discover axis systems →
Technology and Features
What the Colibri 4.0 series has to offer.
Integrated control
- Positioning control and power electronics in the motor
- Compact all-in-one solution
- Decentralized machine architecture
Industrial Ethernet & Fieldbus
- PROFINET, EtherCAT, EtherNet/IP
- CANopen depending on the model
- TIA Portal and CODESYS integration
Industrial-grade version
- Industrial connectors; M8 for inline design
- Motor supply 24–48 VDC
- Separate 24 VDC logic supply
- Optional IP54, integrated reverse polarity protection
- Without forced ventilation, up to 50 °C ambient temperature according to series specifications; check model
Optional expansions
- Brake starting with NEMA 23 and planetary gearheads
- Multiturn absolute encoders
- Digital 24 V inputs/outputs
- Limit switch connection; STO optional, inline for NEMA 17 upon request
Features and availability depend on the selected model. The corresponding product data sheets and other technical documentation can be found on the linked product pages in the store.
Existing machines and classic interfaces
Colibri 3.0 with BAC or Profibus.
In addition to Colibri 4.0, we continue to offer proven stepper motors with integrated control for existing machine designs. The BAC basic I/O controller executes stored motion and positioning sequences with or without an external PLC. The Colibri CFG tool allows you to configure the BAC motion sequences without traditional programming. Profibus versions support integration into existing systems.
Colibri 17
NEMA 17 · 42 × 42 mm
Torque up to 0.6 Nm
BAC Basic I/O or Profibus DP
Colibri 23
NEMA 23 · 57 × 57 mm
Torque up to approx. 2 Nm
BAC Basic I/O or Profibus DP
Colibri 34
NEMA 34 · 86 × 86 mm
Torque up to 12 Nm
BAC Basic I/O or Profibus DP
Match the motor and mechanics
Stepper motor with gearbox
for your application.
Our stepper motors are also available with planetary gearheads. A suitable gear ratio optimizes speed and torque for the application. We’ll help you select the right motor, controller, and gearhead.
From Design to Commissioning
Design the right solution.
Easy commissioning.
MotorFinder:
Design the right drive.
Enter load and motion profile, check torque and speed: MotorFinder helps you select your stepper motor with controller—even with a gearbox.
Colibri Studio:
Easily configure the drive.
The free software for parameterization, test runs, and diagnostics. Connect your Colibri drive via Ethernet or USB and tailor the settings to your machine.
Additional drive solutions from GUNDA
Servo motors with integrated controllers.
For dynamic motion applications.
In addition to our stepper motors with controllers, we offer compact servo motors with integrated controllers for highly dynamic and demanding positioning tasks.
The integrated servo drives combine the motor, controller, and power electronics into a single unit. They reduce wiring effort, save space in the control cabinet, and facilitate integration into machines and decentralized axis systems.
Good to know
Questions about stepper motors with integrated control.
What is a stepper motor with integrated control?
A stepper motor with integrated control combines the motor, driver or power stage and positioning controller in one compact drive unit. A separate stepper motor controller in the control cabinet is no longer required. Our Colibri drives also include an encoder for position detection and monitoring. Interfaces and functionality depend on the series and version.
What are the advantages of a controller integrated directly into the motor?
The integrated controller reduces the amount of wiring required between the motor and the power electronics and saves space in the control cabinet. Motion functions are executed directly within the drive. This simplifies the design of decentralized machine concepts and enables a compact combination of motor, electronics, and communication.
What sizes are available for the Colibri stepper motors?
The Colibri 4.0 series includes NEMA 17, NEMA 23, NEMA 24 and NEMA 34. An Inline version is also available for NEMA 17. Motor lengths, torque ratings, housing types and options vary by size. Choose the drive to match the mechanical and electrical requirements of your application.
How do I select the right motor size?
The decisive factors are the required torque at the intended speed, load and mass inertia, acceleration, duty cycle, and installation space. The holding torque alone is not sufficient for selection. Additionally, the torque-speed characteristic curve and the permissible axial and radial shaft loads must be taken into account. The MotorFinder assists with the selection based on the motion and load data.
What interfaces do the integrated stepper motors support?
Colibri 4.0 is available with PROFINET, EtherCAT, or EtherNet/IP, depending on the size and version. CANopen is also documented for certain versions. Older Colibri series and BAC versions offer, depending on the model, digital I/O, pulse/direction, RS485, CANopen, or PROFIBUS-DP. Not every interface is available for every size; the specific device version selected determines availability.
Can Colibri drives be connected directly to a PLC?
Yes. With the appropriate communication interface, Colibri drives can be integrated directly into a PLC system. With Colibri 4.0, for example, positioning commands and motion parameters are transmitted via Industrial Ethernet. The drive executes the motion and returns status and diagnostic information. BAC versions can alternatively be controlled via digital I/O or pulse/direction.
How does the PROFINET connection to a Siemens PLC work?
TIA libraries and function blocks are available for the PROFINET version. The PLC sends control commands and motion parameters to the drive. The PROFINET manual covers absolute and relative positioning, homing, jog mode and stop commands. The drive reports status, faults, current position and actual speed to the PLC.
How are Colibri 4.0 drives configured on a PC?
PC configuration is performed using Colibri Studio via the interface provided for the device model. The data sheets specify Ethernet TCP/IP with the ASCII protocol or USB, particularly for EtherCAT and certain CANopen models. This allows parameters to be set and supports commissioning. In older documentation, the configuration software is also referred to as Colibri40 Config.
Is direct control via a PC possible?
Yes. The Colibri 4.0 data sheets describe direct PC control via the configuration interface, including simple laboratory and test applications. Suitably equipped devices can use Ethernet TCP/IP with an ASCII protocol. Monitoring functions such as a heartbeat help supervise communication. Available commands and connections depend on the device version.
What supply voltages do the integrated stepper motors require?
The motor driver operates at 24–48 VDC for all Colibri 4.0 models described here. The separate logic power supply requires 24 VDC. Different values apply to older BAC models: For example, the Colibri 23 BAC is documented with a control voltage of 24–36 VDC and a motor voltage of 24–48 VDC, while the Colibri Kompakt 34 BAC is documented with 24–36 VDC and 24–60 VDC. The nameplate and data sheet for the specific drive are always authoritative.
What is the function of the integrated encoder?
The integrated encoder detects motor movement and enables the position to be determined or monitored. When monitoring is activated, deviations between the specified and actual movement can be detected. The available responses and feedback depend on the controller and parameter settings. An encoder alone does not mean that every model operates in a controlled manner like a servo drive.
Are absolute encoders available?
Absolute encoders are available as an option for various Colibri 4.0 models; multiturn encoders are also available for several sizes. Availability depends on the size and device model. Whether a reference run is required and how the position is acquired after power-up depends on the encoder used and the configuration.
How does the BAC version differ from Colibri 4.0 with Industrial Ethernet?
The BAC version supports positioning tasks using digital I/O, pulse/direction or optional RS485 communication. Depending on the operating mode, stored motion profiles can be selected or program sequences executed. Colibri 4.0 with Industrial Ethernet connects to the machine controller via PROFINET, EtherCAT or EtherNet/IP and exchanges motion commands, status and diagnostic data through the selected interface.
When is an integrated stepper motor with a gearbox a good choice?
A gearbox is useful when you need a lower output speed or higher output torque. The ratio also changes the load inertia reflected to the motor and the output motion resolution. Consider efficiency, backlash, permissible loads and the required positioning accuracy when selecting a gearbox. Gearboxes are optionally available depending on the Colibri version.
What connections and protection ratings are available?
The Colibri 4.0 data sheets mainly specify M8 connectors for NEMA 17 and M12 connectors for NEMA 23, NEMA 24 and NEMA 34. Additional sensor or I/O connectors may be provided depending on the version. The documented protection ratings are IP40 as standard and IP54 as an option. Check the connector type, protection rating and mating connectors in the relevant data sheet.
Are digital inputs and outputs as well as a brake available?
Depending on the version, Colibri 4.0 offers additional 24 V digital inputs and outputs for sensors or valves. A brake is optionally available for NEMA 23, NEMA 24 and NEMA 34. A brake is not available for NEMA 17. Select the equipment to suit the motor size and application.
Is the STO safety function available?
STO (Safe Torque Off) is optionally available for Colibri 4.0 in NEMA 17, NEMA 23, NEMA 24 and NEMA 34 sizes. For NEMA 17 Inline, STO is available on request; we will check the specific version with you. STO prevents the generation of motor torque. Refer to the documentation for the selected version for its safety-related specifications.
For which applications are stepper motors with integrated control suitable?
Typical applications include positioning axes, feeders, dosing systems, packaging machines, handling systems, and laboratory automation. Integrated stepper motors are particularly useful where compact drives and decentralized installation are required. Suitability depends on the required torque, speed, dynamics, and environmental conditions.
Personal. Technical. Direct.
Your stepper motor with controller.
Designed together to fit your needs.
You know your application; we know our drives. Together, we’ll determine torque, speed, installation space, and interface —from the right standard drive to a custom design.
To make a specific selection, please provide us with the load, motion profile, supply voltage, and desired communication protocol. Send us the available data—we’ll work together to clarify any open questions.