For perfect current control for high speed stepper motors, take a look at the new Trinamic TMC 2160 IC

The TMC2160 is a high-power stepper motor driver IC with SPI interface. It features industries’ most advanced stepper motor driver with simple Step / Direction interface.

Using external transistors, highly dynamic, high torque drives can be realized. Based on TRINAMICs sophisticated SpreadCycle and StealthChop choppers, the driver ensures absolutely noiseless operation combined with maximum efficiency and best motor torque. High integration, high energy efficiency and a small form factor enable miniaturized and scalable systems for cost effective solutions.

The fully compatible TMC5160 offers an additional motion controller to make stepper motor control even easier.
TMC-2160Features and Benefits:

  • 2-phase stepper motors up to 20A coil current (external MOSFETs)
  • Step/Dir Interface with microstep interpolation microPlyer™
  • Voltage Range 8 … 60V DC
  • SPI Interface
  • Highest Resolution 256 microsteps per full step
  • stealthChop2™ for quiet operation and smooth motion
  • Resonance Dampening for mid-range resonances
  • spreadCycle™ highly dynamic motor control chopper
  • dcStep™ load dependent speed control
  • stallGuard2™ high precision sensorless motor load detection
  • coolStep™ current control for energy savings up to 75%
  • Passive Braking and freewheeling mode
  • Full Protection & Diagnostics
  • Compact Size 9x9mm2
  • TQFP48 package

Application examples:
High voltage multi purpose use…..
The TMC2160 scores with advanced motor commutation algorithms, combined with powerful external MOSFET driver stages, and high-quality current regulation. It offers a versatility that covers a wide spectrum of applications from battery powered, high efficiency systems up to embedded applications with 20A motor current per coil. Based on TRINAMICs unique features stallGuard2, coolStep, dcStep, spreadCycle, and stealthChop, the TMC2160 optimizes drive performance. It trades off velocity vs. motor torque, optimizes energy efficiency, smoothness of the drive, and noiselessness. The small form factor of the TMC2160 keeps costs down and allows for miniaturized layouts. Extensive support at the chip, board, and software levels enables rapid design cycles and fast time-to-market with competitive products. High energy efficiency and reliability deliver cost savings in related systems such as power supplies and cooling. For smaller designs, the compatible, integrated TMC2130 driver provides 1.4A of motor current.

For more information on the TMC2160 or any other Trinamic products contact Micromech on 01376 333333 or

The New Kollmorgen AKD2G Servo Drive

The new AKD2G servo drive from Kollmorgen introduces the Servo-on-a-Chip:
Now with even more safety features. A powerful compute engine that can control 2 axes simultaneously while handling Safe Motion Monitor (an integrated safety solution), and up to 28 I/O.
In addition the design has been streamlined by optimising the AKD2G for
single-cable motors.

Kollmorgen AKD2GFlexible

  • One and two axis variants available
  • Modular design allows the user to specify only the features needed
  • Supports a variety of feedback devices—SFD & HIPERFACE® DSL standard; Optional feedbacks include EnDat2.2, BiSS 1.0, Analog Sine/Cos encoder, incremental encoder, resolver and more
  • Multiple bus choices for system optimization, including EtherCAT® & FSoE and CANopen®
  • SIL-qualified over-voltage, current, and temperature detection provided for added dependability
  • Optional Safe Motion Monitor (SMM), SIL3/PLe
  • Industry-leading power density for greater flexibility in mounting
  • Fits into a 10” deep control panel

Easy to Use

  • Plug-and-play compatibility with Kollmorgen controls and motors
  • WorkBench GUI, acclaimed for customer experience and usability
  • Hybrid Motor-Power connector is optimized for single-cable motors:
  • No adaptors, no D-subs, no splitters
  • Cage-clamp spring terminal connectors on I/O allow for fast and easy installation
  • Optically-isolated I/O reduces noise, and eliminates need for additional hardware


  • Accommodates changing load conditions immediately:
  • Current loop updates in 1.28 ?s, nearly 50x the speed of our nearest competitors
  • Velocity and position loops lead the market at 62.5 ?s and 250 ?s, respectively
  • Servo on a ChipTM includes dual-core ARMTM A9, 800 MHz µP, 1.5 M gates
  • Auto-tuning with a click of a button gets you started quickly
  • Wizard-based tuning uses advanced Bode Plot tool to help you efficiently manual-tune when desired
  • Fast data acquisition with TCP/IP Ethernet service channel

For more information on the AKD2G Servo Drive or any other Kollmorgen Products contact Micromech on 01376 333333 or Email

Speed up the development of your application with the Trinamic TMCM 1240 single axis stepper drive/controller from Micromech

Trinamic - TMCM 1240

The module incorporates Trinamic´s latest stepper motor drive technologies including the popular silent control mode StealthChop in its second generation and the sensorless load-dependent current scaling CoolStep. The magnetic SensOstep encoder provides safe step-loss detection even in stand still.

TMCM-1240 is a single axis motor driver/ controller module for 2-phase bipolar stepper motors. It supports SixPoint™ ramps in addition to linear ramps. It is capable of driving up to 2A RMS motor current and is designed for an operating voltage of 10…30V DC supply voltage. The device provides a Step/Dir interface, an integrated SensOstep™ encoder and support for external encoder.
Features and Benefits:

  • Single axis controller/driver for 2- phase bipolar stepper motor
  • 10. . . 30V DC supply voltage
  • RS485, CAN & USB interface
  • integrated sensOstep encoder and support for external encoder
  • S/D interface
  • Multi-purpose inputs and outputs
  • Board size: 39mm x 39mm, height 11mm max. without mating connectors
  • 2 mounting holes for M3 screws

Motion Controller

  • Motion profile calculation in real-time
  • On the fly alteration of motor parameters (e.g. position, velocity, acceleration)
  • Linear and unique SixPoint™ramp in hardware
  • Encoder interface and Reference / Stop switch inputs


  • Motor current: up to 2A RMS (2.2A RMS max. / 3.1A peak, programmable in software)
  • Supply voltage: 24V DC ( 10. . . 30V DC)
  • 256 microstep per full step
  • SpreadCycle™ highly dynamic current control chopper
  • StealthChop™ for quiet operation and smooth motion
  • CoolStep™ autom. current scaling
  • SpreadCycle™ highly dynamic current control chopper
  • Programmable Step/Dir interface for driver-only applications with microstep interpolation


  • Laboratory Automation
  • Manufacturing
  • Semiconductor Handling
  • Robotics
  • Factory Automation
  • Test & Measurement
  • Life Science
  • Biotechnology
  • Liquid Handling

For more information on the TMCM-1240 or any other Trinamic products contact Micromech on 01376 333333 or

KBM frameless kit brushless motors

What is direct drive technology?
With direct drive technology a torque motor is coupled directly to the driven load. This provides a very stiff mechanical connection to the load, eliminating problems associated with couplings, belts and gearboxes.

Kollmorgen KBM
KBM™ Series frameless kit brushless motors are designed to be embedded in your machine. The rotor is supported by machine’s own bearings.
A large selection of standard motors are available or alternatively a bespoke solution incorporating your specific modifications can quickly and cost-effectively create a an exact fit motor which will provide the highest performance and longest life in the most compact space.
Designs, which include special winding configurations, tailored mounting features, diameter and stack length dimensional adjustments, or material variations, are all possible.

Simplified Machine Design.
With a Kollmorgen KBM Solution from Micromech, your machine design is simplified. Noisy mechanical transmissions are eliminated as are the performance limitations associated them.

The direct coupling of a torque motor to a load provides improvements to a machine, unachievable with a more compliant mechanical transmission. Furthermore, expensive maintenance is greatly reduced as the need to adjust belts or pulleys or to lubricate gearboxes is eliminated.

Direct drive frameless vs Conventional Motor Systems
Conventional servo systems with mechanical transmissions limit servo performance and reliability. Typically designs consume more space due to use of transmissions, belt / pulley arrangements and couplings. Additionally maintenance is more extensive. This all adds unnecessary machine down time and costs.

Integration Costs

  • Positional inaccuracies from transmission compliance
  • Mounting and alignment of gearbox / belt / bracket
  • Servo tuning difficulties caused by compliance and backlash
  • Pulley installation and tensioning
  • Oversize motor for inertia matching
  • Extra components – clutch, output shaft feedback device
  • Motor / gearbox mounting Bracket
  • Purchasing and BOM
  • Inventory and Inspection
  • Coordinate multiple lead times

Life Cycle Costs

  • Machine maintenance
  • Belt tensioning and replacement
  • Gearbox lubrication and replacement
  • Increasing backlash due to wearing gears
  • Costs to support field failures
  • Unscheduled down time
  • Belt breakageBelt slippage
  • Gearbox failure
  • Reduced throughput due to compliance and settling

Micromech engineers have assisted many of our customers with specification of a KBM frameless motor solution. Contact us for further information on the wide variety of pre-engineered options and configurations available or send us your exact requirements for a custom solution for your application. Call 01376 333333 or Email

Having difficulty finding the right stepper motor? Need something a bit different? Check out the many options that the Stogra range of motors have to offer. Exclusively available from Micromech in the UK.

This superb, extensive range of high quality stepper motors is manufactured in Germany by Stogra and available exclusively from Micromech in the UK. Stogra have been manufacturing stepper motors since 1974 and provide some unique standard options. They also have the ability to manufacture specials quickly at cost effective prices.
Options include:Stogra

  • Terminal housings
  • Different mounting flanges
  • Double shafts
  • Keyways
  • Encoders
  • Various connector options
  • Brakes
  • Vacuum compatibility 10-6 Torr
  • Special coatings
  • Precision gearheads
  • Shaft options
  • Stainless steel
  • High torque
  • High temperature
  • Hollow shaft


For further information on these and high quality stepper motors, please contact Micromech on 01376 333333 or at