Motors & Drives Information

Danfoss Bauer's three-phase BG Series helical geared motors are engineered to drive machines and equipment of all types.
Danfoss Bauer's three-phase BG Series helical geared motors are engineered to drive machines and equipment of all types. These motors are available with power from 0.075 to 50hp, with output speeds of 0.3 to 540rev/min and torque range from 240Nm to 222kNm. The BG Series comes as a standard two-stage design and offers simple installation with a wide range of mounting options.

These motors include stator winding of high quality insulated enamelled copper wire, an aluminium die cast cage rotor and gear wheels made of high tensile and case-hard steel.

The state-of-the-art gearbox housing is completely enclosed for operation in harsh conditions, protecting the motors from dust and water spray, as well as preventing lubricant loss and dirt build-up.

Parvalux can now supply a complete range of electronic speed controllers for its AC induction motors, DC shunt, permanent magnet and brushless motors.
Parvalux can now supply a complete range of electronic speed controllers for its AC induction motors, DC shunt, permanent magnet and brushless motors. The 3001 series inverter features the latest technology for accurate and reliable control of AC squirrel cage induction motors. Rated up to 370W, and suitable for use with single-phase supplies from 85 to 265V, the microprocessor controlled drive generates full three-phase PWM (pulsewidth modulation) output for smooth speed and torque control at up to twice synchronous speed.

Easy to use and install, the Parvalux 3001 controller is ideal for the OEM or single user.

Suitable for linear voltage/frequency or fan/pump applications, the speed is set using the built-in potentiometer or an external reference voltage.

Directional control is by means of pushbuttons or toggle switch.

Monitoring circuits protect the motor and drive against a range of fault conditions.

Parvalux DC motor controllers for shunt and permanent magnet motors feature robust thyristor controls for accurate speed and torque control.

The range comprises mains fed reversing controllers with adjustable current limit and load compensation, and PWM controllers for low voltage and battery operation.

Both types feature a soft start facility and adjustable current/torque limit with load compensation to control starting currents and reduce mechanical shock.

Speed range is 25:1 for mains units and 20:1 for the low-voltage type.

For Parvalux brushless geared motors, a new low-voltage motor controller features variable speed reversing with adjustable torque limit.

Rated at 24V DC at 12A, the unit gives a speed control ratio of 25:1 All Parvalux controllers can be marked CE compliant and are available as skeleton or enclosed (IP22) versions.

They provide a simple and cost effective way to add the flexibility of speed control across a wide range of applications.

Stober Drives has confirmed that its MGS range of helical inline, helical worm, helical shaft mounted and helical bevel geared motors or geared units all are compliant with the ATEX 100a directive.
Stober Drives has confirmed that its MGS range of helical inline, helical worm, helical shaft mounted and helical bevel geared motors or geared units all are compliant with the ATEX 100a directive. The EC Directive 94/9/EC must have been adopted by the EU member states by 1st July 2003 as national law. However, it has been law in Germany since 1996.

An ignition hazard assessment has been conducted for the Stober MGS gear units and the following classifications were made.

Specified categories and temperature ranges of Stober gear units are II 2 G c/k T4; II 2 D c/k 120C.

Units ordered to ATEX 100a standards receive a separate specification plate indicating the selected classification.

All ATEX approved geared motors and geared units up to 5.5kW and size 5 helical inline and size 4 helical worm for use in hazardous areas can be assembled quickly and smartly using the assembly line in the UK at the company's head office in Waltham Abbey.

Stober Drives' standard three-year warrantee still applies to ATEX-approved solutions, giving piece of mind to the end user.

At the heart of the world's largest industrial shredder is a 40 tonne, 6865kW, 14-pole (420rev/min) WEG high voltage electric motor.
The world's largest industrial shredder, a Lynxs unit capable of handling 450 end of life vehicles an hour, was opened recently by the Sims Group UK at Associated British Ports' (ABP) of Newport. At the heart of the Lynxs shredder is a 40 tonne, 6865kW, 14-pole (420rev/min) WEG high voltage electric motor. Designed in conjunction with Sims Metal, the 11kV wound rotor induction motor drives the hammers that crush the end of life vehicles and other scrap metal.

Connected directly to the national grid, the WEG motor is water cooled and has a specially reinforced frame to handle the exceptionally heavy thrust loads, which can reach 116 tonnes on the motor drive end bearing.

The new Lynxs shredder is part of a GBP 10 million investment in the ABP Newport Terminal by the Sims Group UK - part of the Australian international metals-recycling company.

Capable of processing 350 tonnes of metal an hour, it is the latest design, allowing for improved yield of all metals.

The Lynxs shredder also contributes to the Sims Group's ongoing investment in technology to recover nonmetallic materials, such as plastics and glass, for recycling.

Stuart Wilcox is the Group Engineering Manager for Sims Metal in the UK and was responsible for assessing exactly which motor best suited their requirements for the mega-shredder project.

He takes up the story.

'The traditional limiting factor on large shredders is the drive motor: as the shredding process demands so much torque, with a continuously varying motor current up to 2.5pu'.

'On our design however, we have reversed this situation, the WEG motor being capable of producing more torque than we need and with an increased thermal capacity'.

'The reason for this is the design produced by WEG, following a visit by myself and Colin Cox of WEG UK to WEG's design and manufacturing facilities in Brazil'.

'We knew the extreme demands of our industry: they knew the capabilities of their motors'.

'We started with a clean sheet of paper and put these two capabilities together, with the result that we have a motor that meets and even exceeds all of our design specifications'.

'The problems we faced in the design of the motor were many: the vibration from the shredding operation combined with the 116 tonnes of thrust load on the motor drive end bearing meant that a special reinforced frame with six foot fixings, rather than the normal four, had to be designed'.

'Added to this, the two water coolers needed to be removable from the top of the machine without removing the overall cover in order to minimise downtime'.

'Also, in view of the large amount of dust and dirt in the atmosphere around the shredder, we came up with a new air filtration system to help motor reliability; and again to minimise downtime, we designed the motor so that easy access could be gained to the slipring enclosure'.

'Having finalised the electrical and mechanical specification of the motor, we then turned to the control equipment: the support package required to operate and optimise the motor operation'.

'Working with WEG UK, we identified a package, which included a power factor correction capacitor bank; switchgear for the main motor stator; state-of-the-art motor management and power factor correction control relays, and a liquid regulator with cooler system for the rotor circuit'.

The power factor correction bank is permanently connected to the 11kV motor terminals via a power factor management relay to ensure that the motor power factor is always maximised.

The second part of the control package, the liquid regulator, is connected to the motor rotor circuit and basically involves inverter fed, motor driven control rods in electrolyte.

As the load decreases or increases on the motor, the rods respectively raise and lower into the electrolyte, thus changing the motor rotor resistance and, consequently, the motor torque capability.

This control philosophy ensures that the motor always operates at its optimum during all shredding operations.

Also helping in this respect is a water-cooled heat exchanger housed on the machine hall roof this cools the electrolyte in the tank, particularly when the motor is operating in an overload condition with maximum slip.

Fed by a large inclined conveyor, the WEG high voltage motor sits in an elevated machine hall.

The primary crushing operation which it performs is complemented by secondary operations using sizing grids for sorting combined ferrous and nonferrous metals; magnetic stations for separating the metals; hand picking stations for removing metals such as copper, and Cyclone fan stations that use high speed airflow to sort heavy materials from light.

The Cyclone stations employ two WEG 315kW, six-pole motors; the second largest motors on the Lynxs shredder after the 11kV machine.

They are controlled by WEG CFW09 variable speed drive systems, which provide the necessary fan control to sort out such materials as plastics, rubber, carpet fibre and glass.

The majority of these materials are sent for recycling by Sims Metal.

In contrast, the bulk material, known as fragmentised metal, which is separated by the main shredder operations, is exported and sold all over the world.

The success of Sims Newport shredder has resulted in another order from the company for a WEG high voltage motor, a 6000hp machine, to drive a similar, but smaller, Lynxs shredder in Australia.

'This is just one of ten orders for high voltage shredder motors that we have received since the Newport shredder went online', said Colin Cox, High Voltage Product Manager for WEG UK.

'The Sims Newport application is further endorsement of the performance and reliability of our high voltage motors in the most demanding of applications.

Other companies have taken note of this, and the result is a high level of large machine business for WEG'.

High acceleration servo motors have been developed for high dynamic positioning applications with a high start-stop frequency.
Following Stober Drives' recent introduction of the new MDS 5000 range of servo drives they would now like to introduce two new complementing ranges of brushless servo motors the ED and EK Range. The high acceleration servo motors in the ED series have been developed for high dynamic positioning applications with a high start-stop frequency. The ED Series are available in 5 different frame sizes (55 to 192mm) with continuous torque ratings from 0.37 to 23.5Nm and peak torque ratings of 1.48 to 91Nm.

The second, short design EK motor series is intended for applications with limited axial installation conditions and high true running specifications.

The EK series are available in 2 different frame sizes (115 to 145mm) with continuous torque ratings from 1.76 to 14.10Nm and peak torque ratings of 15 to 50Nm.

Both series are available for use with absolute measuring systems.

Naturally, traditional resolvers, with their advantages in very poor environmental conditions, are also available.

In combination with digital encoders, the electronics rating plate fitted as standard in the motor helps to simplify commissioning.

All motors are CE marked as standard and can be supplied with UL certification as an option.

Standard IP56 enclosure type but upon requested can be supplied with IP66 enclosure type.

Stober also supply low backlash safety spring pressure brakes as standard on motor size ED4-ED7.

As an option backlash-free permanent magnet holding brakes are available.

Motor size ED2-ED3 and EK5-EK7 have a backlash-free permanent magnet holding brake as standard.

To increase the continuous torques and continuous outputs of the ED/EK motors, Stober can provide forced-air cooling systems (IP44).

ACP and D have recently launched the Cobra range of linear stepping motors which incorporate pneumatics and does away with the need for belts, screws or linear bearings.
A radical new design of linear slide looks like it will transform the market for precision XYZ movement control. ACP and D have recently launched the Cobra range of linear stepping motors which incorporate pneumatics and does away with the need for belts, screws or linear bearings. In this innovative design the stepping motor coils and magnets are fitted into the carriage.

The beam (which is also referred to as the stator) along which the carriage floats (just 15 microns off the surface) is simply a length of steel or stainless steel with notches cut into it.

The notches are filled with a polymer in order to make the beam surface smooth.

As the carriage 'floats' on a bed of air the only friction in the system is due to 'cable drag'.

The strong magnetic field keeps the carriage in place at all times and should there be a pneumatic failure the carriage immediately comes into contact with the stainless steel stator and is held in position by the magnetic forces due to the permanent magnets and magnetic field which the coils generate.

With the Cobra system vertical movement is also possible.

Use of stepping motors on linear slides (especially with long stroke lengths) has been held back in the past due to technical limitations such as the inertia of the lead screw or belt wear and often more complex and expensive servo motor systems have been used in their place.

Stepping motors have traditionally been used for light slow moving loads.

With the Cobra linear stepping motor system these are limitations of the past.

Use of pneumatics has ensured that higher maximum velocities up to 3m/sec can be achieved.

When used in combination with ACP and D's Star2000 range of low-cost stepping motor controllers the Cobra can provide step increments down to 10 microns with all the accuracy and repeatability and simplicity of a stepping motor system.

It is possible to build two stepping motors into a single carriage thus making an XY system which 'floats' over a stainless steel sheet instead of a beam.

This Cobra unit is known as a 'Planar Drive' and is pictured here.

Presently the maximum working envelope for the planar drive is 1800mm x 1800mm however it is expected that these dimensions will be increased over the next twelve months.

If required it is possible to undertake linear and circular interpolation movements using ACP and D's low-cost Goya 100 PLC in combination with the Star2000.

Another important feature of the Cobra is that (dependant upon available space) it is possible to have more than one carriage operating on the system at once.

On the linear stepping motor a number of carriages can be operated together or independently on the same beam or stator.

This is also the case for the planar drive.

If a number of robotic functions are required on a production line this important capability may well enable the total size on the line to be reduced with the obvious savings in cost and space.

Finally, prices for the linear Cobra system are extremely competitive and start at £650 for the carriage, steel beam and electronic Star2000 stepping motor controller.

The new Drives, Motors and Controls show, for the first time, is one of the four major exhibitions which make up Manufacturing Week, to be held from 30th October-1st November in Birmingham, UK
Those involved with addressing industry's increasing concerns over the efficient use of energy and the reduction of maintenance costs will have a prime opportunity to find exactly the solutions they need at the new Drives, Motors and Controls show which, for the first time this year, is one of the four major exhibitions which make up Manufacturing Week. The new show, which runs from 30th October to 1st November, has power for industry as its central focus. The show's organiser, Reed Exhibitions, has carefully planned the event so that the exhibitors primarily involved with motors, motor control, mechanical power transmission, pneumatics and hydraulics are concentrated in the same area, making it much easier and quicker for visitors to locate and view the stands which most interest them.

The benefits conferred by the status of Drives, Motors and Controls as a separate exhibition within the Manufacturing Week portfolio are not, however, confined to the show's visitors.

The new arrangement effectively channels visitors toward the stands where they are most likely to do business, thereby ensuring that stand personnel are able to use their time effectively in discussions with genuine prospective buyers.

Exhibitors also benefit from the undoubted pulling power of Manufacturing Week which, in 2000, attracted no fewer than 10,393 visitors, 73% of whom came to the exhibition with the specific intention of finding new products or suppliers.

Exhibitors participating in the new Drives, Motors and Controls show provide a wide range of products and services.

Among the most important of these are motors of all kinds, gears and gearboxes, belt and chain drive systems, variable speed drives, components for hydraulic and pneumatic applications, and mechanical speed controllers.

Support for the new Drives, Motors and Controls show is strong, demonstrating that exhibitors appreciate its status as part of the UK's largest full-range manufacturing event.

Strong exhibitor support also ensures that visitors will have the opportunity to see the most interesting new products from leading UK and overseas manufacturers.

Just a small selection of the companies that are participating in the show includes HPC Gears, Bosch, Ondrives, Euchner, and HPC Engineering.

The Drives, Motors and Controls show is complemented by three other major exhibitions in the Manufacturing Week 2001 portfolio: the design engineering Show; Automation; and Production.

All exhibitions run concurrently from 30th October to 1st November, in Hall 19 at the National Exhibition Centre in Birmingham, the UK's most convenient and accessible venue.

New ideas made possible through progress and product development are worth thinking about and the new CBP motors from Hagglunds open up some interesting ideas in marine propulsion.
New ideas made possible through progress and product development are worth thinking about, and the new CBP motors from Hagglunds open up some interesting ideas in marine propulsion. Hagglunds Drives has been manufacturing hydraulic motors since the 1960s - originally for cranes but since the 1980s on heavy duty continuous industrial drives - and now the latest development is a high power drive unit available in several sizes that will give power up to 1MW from a single motor. Of course with hydraulic motors it is very easy to connect in parallel to share the load and with through shaft design you can also stack the motors on a shaft to multiply the power available.

The speed range available from the new CBP140 motor is up to 320rev/min, dependent on the specific displacement, and within the CBP140 there are four sizes to choose from and the company is planning for four more and bigger motors in the range CBP280 to CBP 840.

The model designation CBP140 means 140Nm/bar torque is produced, and so with a constant pressure of say 175bar a torque of around 24kNm is produced.

So a wide range of high power motors will be available and these could provide some interesting benefits on propulsion systems on small to medium sized vessels.

For example the propeller would no longer have to be mechanically connected to the engine with a long rotating shaft.

It would be replaced with hydraulic pumps and just three hydraulic lines to the motor.

Therefore shipbuilders can eliminate all the engineering involved in designing and installing the long prop shaft and the cost of the shaft and bearings needed.

This also frees up the possibilities of positioning the engine and propellers to anywhere in the vessel to suit the application.

Of course, hydraulically a number of propellers can be powered from the engine, so opening up more possibilities.

Designers can also use two or more engines and share the power between the drives.

This provides the opportunity to look at the basic vessel design and make improvements with this new versatility and flexibility of major components, for example to improve the weight distribution.

It also means that all or some of the power can be diverted from the propulsion to other vessel requirements such as deck equipment when the full power of propulsion is not needed.

More than one engine then gives some possibilities for redundancy and therefore extra security if needed.

If the pumps used are variable displacement this means speed can be controlled independently of the engine which would run efficiently at a fixed speed and with two propellers, could be used in a steering mode for example one in reverse and one in forward.

The hydraulic motors can even be used in submerged conditions and are maintenance free, providing long and reliable life.

They are also quiet compared with mechanical drives because there are no high speed elements involved as gearboxes are eliminated, the motors provide high torque without the need of speed reduction units.

The mechanical efficiency of these motors is approaching 98% similar to that of a roller bearing.

The motors and pumps being standard proprietary items are available on short lead times, and Hagglunds has a worldwide network of sales and service facilities to offer support wherever you may need it.

There are many other characteristics of Hagglunds motors which may be attractive too, such as the almost negligible inertia which brings a response to the drive impossible for geared drives to emulate for example to give fast stopping in emergencies or for starting and stopping frequently with controlled ramp up and down times.

The high torque from the motors is available irrespective of the speed so high starting torque is a characteristic and it may be possible to improve propeller design to take advantage of this feature to operate at lower speeds and therefore lower noise levels.

The drive arrangement is very simple and installation easy.

With flexible hoses connecting the motor it is also possible for the drive to move during operations so opening the possibility for the propeller to slew or move up and down with the close coupled drive.

This technique is already used for example on dredging cutterhead drives.

New from Electro Mechanical Systems are two 26mm diameter neodymium magnet ironless rotor DC motors from System Faulhaber along with complementary 26 and 44mm planetary gearheads.
New from Electro Mechanical Systems are two 26mm diameter neodymium magnet ironless rotor DC motors from System Faulhaber along with complementary 26 and 44mm planetary gearheads. Designated the 2642-CR and the 2657-CR, the new motors, like other models in the Faulhaber high performance neodymium magnet ironless rotor DC motor range, are aimed at long life, compact drive applications where size, power-to-weight, power-to-volume and high efficiency are all critical. The 26mm planetary gearhead is designated the 26/1 while the 44mm version is designated the 44/1.

The 2642 motor has a nominal length of 42mm and delivers up to 23W.

The 2657 is nominally 57mm long and can deliver up to 44.5W.

Both models have graphite brushes, copper commutators and pre-loaded ball bearings to give an operating life of up to 5kh at catalogue recommended values.

Torque ratings are up to 4.5Nm on the 26/1 gearhead and 20Nm on the 44/1 gearhead.

The operating life of the 26/1 gearhead may be extended by specifying optional all-steel gears and heavy duty lubrication, a feature that comes as standard on the 44/1 model gearhead.

Aerotech's ANT-20G goniometer stage enables extremely accurate angular alignment of optical components such as fibre couplings and arrays.
Aerotech's ANT-20G goniometer stage enables extremely accurate angular alignment of optical components such as fibre couplings and arrays. Indeed, any precision application needing small, angular motions, can be met by the ANT stages. Using direct drive linear motor technology, Aerotech defies logic with a linear motor that provides incredible repeatability of +/-0.05arc-sec and gives a 20-degree angular motion that is accurate to an impressive 10arc-sec.

When used with Aerotech's MXH multiplier, the ANT-20G stage provides a positioning speed of 150 degrees per second, even at 0.058arc-sec resolution.

The resolution is improved still further to an amazing 0.0018arc-sec when the ANT stage is driven by Aerotech's new Automation 3200 software-only motion controller.

Linear encoder feedback is used to ensure an exceptional position reference.

The noncontact, noncogging direct-drive technology gives a higher frequency response and unlike worm or piezodrive stages, the ANT-20G does not require periodic adjustment or maintenance.

This represents a significant step towards trouble free operation that is matched by ease of installation.

A benefit is the small size of the ANT goniometer which measures 95 x 81 x 38mm and features high precision ball bearings enabling loads up to 1.5kg.

The critical elements of the ANT-20G goniometer, as with all other ANT series nanopositioners, were selected to operate in a 24/7 manufacturing environment.

Trident Engineering will introduce a new range of DC motors and stepper motors from Japanese company, Motraxx, on Stand B46 at Drives and Controls 2002.
Trident Engineering will introduce a new range of DC motors and stepper motors from Japanese company, Motraxx, on Stand B46 at Drives and Controls 2002. The stand will also feature DC drive solutions from Portescap, E-Motion, Canon, Igarashi and Trident's own motor control products designed and built in the UK. Stand B46 will reflect that Trident stocks the widest range of small DC motor solutions available from a single UK source and can therefore offer cost-effective drive solutions to suit the whole spectrum of small DC drive systems.

The Motraxx range comprises coreless vibration, permanent magnet iron core, DC brushless and AC synchronous motors plus a highly competitive range of 15 to 55mm diameter, low cost, high quality, permanent magnet stepping motors and stepping geared motors.

These are supplied with a selection of gearheads to form a powerful and highly -cost-effective solution in application areas such as medical and laboratory equipment, CCTV and other camera systems, educational and scientific equipment, measurement devices and pick and place equipment.

Also on show will be an extensive range of ironless rotor motors from Portescap, 16mm, high precision, 1.5W skew wound, ironcore motors with a range of planetary gearheads from Canon, linear servo and pulse width modulated controllers from E-Motion and permanent magnet motors from Igarashi.