With the GR 23, Dunkermotoren launches a powerful brush-type DC motor with an output power of up to 4.3 Watt. In contrast to its predecessor, the GR 22, the continuous output torque was simply doubled, from 0.5 Ncm to 1 Ncm, while it was lengthened only by 15%.

Dunkermotoren introduces a consistent expansion of their portfolio of brushless motors. The compact BG 32 with an outer diameter of 32 mm and a nominal output power - depending of the length - of 10 or 20 Watt, is related to the well-established BG 42 in terms of technology on the one hand, on the other hand, it will replace the predecessor, the BG 31, in the medium term.

Alcatel-Lucent, current partner of Dunkermotoren GmbH has decided to sell its shares of the Bonndorf/Germany based electric drive technology expert. The independent European private equity investor Triton takes over the shares as of January 1^st 2010 with the strategy to strengthen Dunkermotoren's position in the electric drive system market on a long-term base. This transaction is subject to the approval of the antitrust authorities.

With Triton as new partner, Dunkermotoren will intensify its holistic strategical orientation to strengthen its abilities to innovate and to compete. All activities and business relations will be continued.

In the course of this transaction, Dunkermotoren GmbH will take over the production facility in Taicang as well as the sales company in the US as proprietor. The organisation structure of the complete company as well as the functions of the management team remain unchanged. The interfaces to the market and with them the contact persons for domestic as well as for international customers and suppliers will remain the same. The employees in the corresponding units in Bonndorf, in Taicang or in Crystal Lake (US sales company) will continue to be employed.

The brushed  DC-motors will be complemented by a strong
member of the family

At the SPS/IPC/DRIVES 2009 exhibition from 24 to 26 November 2009, Dunkermotoren presents the new brushed DC-motor GR 63S. This motor complements the gap between GR 63 to GR 80 with an output power up to 130 Watts.

The drive specialist located in Bonndorf enlarges its comprehensive product line by a new high-torque planetary gearbox PLG63. This compact planetary gearbox with continuous torque up to 100 Nm, fits perfectly to the new DC- servomotor BG65 S.

At the Hannover Messe from 20 to 24 April 2009, Dunkermotoren will present the new DC- Servo Motor BG65 S, which is an enhanced version of the highly acclaimed  BG65. The output power of the new BG65 S is more than the double that of its predecessor, with the same footprint.

The Company Dunkermotoren as a manufacturer of motors and actuators is within the meaning of REACH a downstream user. The products you get from us, are manufactured items and therefore not under REACH registration. As downstream users within the meaning of REACH, for the company Dunkermotoren in principle is no registration obligation.
In our own interest and for ensuring a high level of product safety, we are watching closely the implementation of REACH and the resulting demands intensive. In particular we are in contact with our suppliers, from which we purchase chemical substances and preparations, that we use in our production process (for example, auxiliary materials such as lubricants, glues, paints, varnishes, etc.).
Our processes are in popular applications of the industries used, witch is in Europe in large tonnage carried out. Against this background and according to previous statements, our suppliers informed us that the pre- registrations are done, and they will register the relevant substances within the legal regulation.
We will inform - in context of Article 33 of the REACH regulation - about SVHC (Substances of Very High Concern)  substances in each relevant case. If you have any further questions concerning the implementation of REACH in our company, please feel free to contact Mr. Carsten Lang, Phone +49 7703 930-177.

At the SPS/IPC/Drives 2008, Iain Yawed (Practice Director of Frost & Sullivan) presented the Award "Company of the Year 2008" to the General Manager Nikolaus Gräf from Dunkermotoren. With this Award the manufacturer of intelligent drive solutions is honored for its successfully strategy, which secured an important market share in the European market for motors with integrated electronics for Dunkermotoren.
The Frost & Sullivan Award for Company of the Year is presented each year to the company that has demonstrated unparalleled excellence within its industry.
The Award is based on numerous factors including the company’s business development, competitive strategy, customer satisfaction, and leadership within a particular Frost & Sullivan Industry Research Group (IRG).
Dunkermotoren is well known for innovative products, constant high quality and and the offering of complete drive solutions.
Its successful strategy to allocate complete product- and service- portfolios in niche markets, enables Dunkermotoren to offering a excellent customer service.
The launch of DC-Servo Motors with integrated power-/ logic electronics, which are combinable to market-oriented solutions with gearboxes brakes and encoders, made Dunkermotoren the deserving recipient of the 2008 Frost & Sullivan „Company of the Year Award in the European motors market with integrated drives“.

The company also supports its customers in both the hardware and the software requirements and has a qualified team for the sales, integration, installation, application engineering, and provide support and after-sales service to customers, for its drive solutions.
Frost & Sullivan assume Dunkermotoren as an exceptional partner for various industries such as industrial applications, sun protection, office, door and window automation.
In the door automation market, Dunkermotoren is known as the market leader in sliding door applications. The same ist true for drives used in the sun protection market for venetian blind applications.

The presented Award „Company of the Year in the European motors market with integrated drives“ and the Award „Vendor of the Year 2007“ by Frost & Sullivan confirms Dunkermotoren the accuracy of the long-lasting strategy.

Implementing local drive networks with integrated master/slave function in DC drives

     
Electronics integrated in DC motors creates extensive advantages for decentralised drive technology in woodworking machines. A master drive controls and monitors a number of slave drives in a local network and therefore considerably relieves the higher-level PLC. The result – shorter cycle times, higher productivity, lower installation costs for the machine and less programming effort for the higher-level PLC.

In the woodworking industry the financial pressure on companies is always in the centre of attention, particularly here in this country. That's why they demand maximum productivity, minimum cycle times and low investment costs through affordable machines. Machine manufacturers can only respond to these demands with sophisticated automation. They are supported in this by the automation equipment manufacturers, like Bonndorf-based Dunkermotoren. The specialist for drive technology based on brushless DC servo motors has now introduced a broad spectrum of DC drives with integrated electronics in its extensive modular system. These compact drives totally fulfil all the user's wishes and requirements.

Electronics supports decentralised drive technology
To achieve high flexibility and short setup duration, woodworking machines are more and more equipped with decentralised drives. Individual motors adjusts formats, carriages and sensors to each required position. With their high reliability and robust yet affordable construction, brushless DC servo motors are ideal for this application. They gain special advantages through their integrated electronics and the spectrum of special functionalities achieved as a result. So these drives can cope with simple to extensive automation tasks. From electronic commutation, through speed control and positioning, up to a local, independently-controlled network, the integrated electronics can now take over diverse sub-sections of the drive automation, without having to access the processing power and memory capacity of higher-level drive amplifiers and controllers.   
Especially in woodworking machines, a number of drives repeatedly have to be moved to programmable positions. These include, for example, the transverse adjustment for sawing laths and boards. The same applies to the format adjustment on profile milling machines. In the past, the format adjustment was manually operated via adjusting wheels. Today's state-of-the-art systems are mostly decentralised drive concepts which receive the necessary positioning data from the higher-level PLC, via a bus system. In this case, the "recipe", or in other words, the description of the profile, including the travel data for the individual positioning drives needed for this profile, must be programmed and stored on the higher-level PLC.

Automating machine sub-sections independently with brushless DC servo drives
Dunkermotoren has now gone a step further with the master functionality (MI -Master Integrated) integrated in the BG series of compact drives. A compact drive with integrated master functionality – complemented by additional DC drives – makes it possible to set up an independent drive network, where the master drive takes over the function of the higher-level PLC. All the data for positioning the individual drives is stored in its electronics.  These can be up to eight BG series compact drives with different sizes and output power. The master drive has a flash memory, where all the data for the independent network is stored in the non-volatile memory. Sequence programmes are written in a deterministic high-level language and stored in the memory. The programming language uses standard objects in accordance with CIA DS302. Up to 500 command lines are available in the flash memory, for extensive motion and monitoring functions. A command line, in turn, can contain several functions. This way, even complex motion profiles can be realised within the independent master-slave drive network. A significant advantage of this local drive network is that it relieves the higher-level PLC of drive-specific control and monitoring tasks. Simply selecting a motion sequence stored in the master drive's flash memory is all it takes to initiate this sequence within the network. So these drive tasks are performed largely independently of the cycle times of the higher-level PLC. In many applications, this reduces the achievable cycle times. In addition, some time-critical applications can now be realised with a comparatively simple, affordable PLC, as the local independent network relieves the PLC of processing and monitoring tasks. The PLC is connected to the network via CANopen. Within the drive network, the individual drives also communicate via CANopen, in accordance with  hardware standard DSP402, which substantially minimises wiring costs. What's more, the higher-level controllers need less room in the central cabinet. Because of the simplified installation, machine manufacturers can build up and deliver their machines more flexibly and in shorter lead- times. The BG series DC servo motors, which function as slaves, also incorporate the electronics for data exchange, so ensuring fast and reliable data exchange within the local drive network. For example, dependent on the master drive, each slave drive independently positions carriages for format adjustment on profile milling machines. Depending on the input from the master drive, their integrated electronics independently control speeds, pre-configured acceleration and deceleration, and the positions to be approached. To achieve good positioning accuracy here, the control loops operate at up to 1024 pulses per revolution.   

The right output power for every function
Dunkermotoren always provides the right drive technology, perfectly matched to the different fields of application. Users can choose from a wide range, extending from 20 to 550 watts output power. So machine manufacturers can optimally design drives for the required tasks. DC drives with lower ratings are normally adequate for simple sliders. Where higher ratings are called for, and consequently where much more expensive AC servos have previously been used, the BG75 series brushless DC servomotors with drive ratings up to 550 watts can now be used. Added to this, Dunkermotoren offers a wide range of planetary and worm gearsboxes and brakes in a well-planned modular system. This way machine manufacturers - working together with Dunkermotoren's drive technicians - can always assemble optimally-designed drive configurations from standard modules within the shortest time and with minimum design effort. Dunkermotoren's specialist team supports the machine manufacturer in the implementation of specific programmes in the master/slave configurations for the designed local drive networks.  

The earthquake catastrophe in the province of Sichuan in China's Southwest has left its destructive marks. Dunkermotoren is aware of its ecological and social responsibility. Thus, they are eagerly collecting for the earthquake victims. Due to the co-operation with the nonprofit organization 'Rotary Help Bonndorf', the donation is tax-deductible. Every donator will get a contribution receipt.

Dunkermotoren doubles each donation

You donate EUR 25 – a donation of EUR 50 will be received.
Directly and without administration charges – for a concrete occasion.

Under the 'reason for payment' name 'Erdbebenhilfe China' (earthquake help China), donations can be transferred to the following account of the organization 'Rotary Hilfe Bonndorf' ('Rotary Help Bonndorf'):

Account number: 225177
Bank code number: 680 512 07
Bank name: Sparkasse Bonndorf

Not only, but just because of the strong affiliation to our daughter company Dunkermotoren Taicang, the donated money will be used for the project 'construction of a village schoolhouse'. In co-operation with a network of local friends, this long-term project will help concerned people in the hinterland – away from media interest or governmental focus.
Dunkermotoren Taicang will inform your personnel personally and regularly about the project progress, also in Bonndorf.

With the servo motors BG45, BG65 and BG75, Dunkermotoren provides powerful and intelligent compact drives for customized drive solutions.
Essential feature of the product line is the integration of different logic and power electronics.
Electronically commutated DC motors now incorporate functions that were previously the preserve of AC servo-motors. This is demonstrated by the BG75 DC motors presented here by Dunkermotoren. With output powers up to 500 Watt and torques up to 5 Nm, they have sufficient reserves to take on numerous drive tasks in the industrial automation. Combined with components selected from a comprehensive package of equipment, such a motor becomes a fully-fledged, cost-effective and compact servo-drive.

One of the outstanding features of the BG75 range is that these motors are available with a variety of integrated electronic functions. The spectrum starts with regulation electronics in the SI version, which, besides speed control, also permits defined acceleration and braking operations. The next stage is the PI model. It provides convenient user software for setting the motor parameters for positioning, speed and torque. The CI variant features a DSP402 compliant CANopen interface. This enables modification of the significant parameters for a trajectory "on the fly".
In addition to the standardized CANopen interface, Dunkermotoren provides the forward-looking communication interface Profinet IRT, based on Ethernet. Other standards such as Profibus and Ethercat are available for projects.
The MI version represents the maximum available, and incorporates a freely-programmable motion controller. With it, a brushless DC- servo motor  can, independently, execute master-slave functions in a drive network. A particular advantage of these integrated control and power electronics is, on the one hand, that they reduce the amount of wiring and cost of installation, and, on the other, that they can take over control and regulation functions and so relieve a higher level PLC of the task of handling computation-intensive control algorithms.

A range of carefully adapted components ensures that the brushless DC-servo motors are a true alternative to servo-drives. These include a magnetic encoder, which provides at the BG45 4 x 256 impulses per revolution and at the BG75 4 x 1024 impulses per revolution. It is installed as standard in the PI, CI and MI version of this motor. Optionally, the absolute encoder AE50 can be fitted; it has a repeatability of 0.3°. With it, highly accurate positioning applications can be realised.

To achieve high torques and low speeds of rotation, there is a wide range of planetary and worm gears that fit the brushless DC- servo motors. By carefully selecting combinations from the comprehensive Dunkermotoren modular system, it is possible to achieve finely-graduated reduction ratios down to 1:30000. A special advantage of the planetary gears is their whole-number reduction ratios. They considerably simplify precision positioning applications in conjunction with a DC- servo motor with integrated encoder.
For the active braking of motions and power-on holding, there is a range of brakes, which, with their extruded-aluminium housings, fit the DC- servo motor BG75 perfectly. The E300 R brake achieves up to 3 Nm holding moment, and can thus cope with the full continuous torque of the motor. The advantage of the E90 R is that it can also be employed as a dynamic brake. Both versions are spring-operated, electrically-released brakes.
With these combinations of well-engineered, carefully adapted drive components, the brushless DC- servo motors with integrated electronics is a complete drive package. Users have at their finger tips an intelligent DC drive system for automation applications, which, in many cases, can readily replace conventional servo-drives and do so at lower cost.