Key Features & Benefits: • Variable Speed Control • Eliminates Valves and Dampers • Significant Energy Savings • Eliminates Electronic Harmonics • No Physical Connection Between

Motor and Load • Lowest Total Cost of Ownership • Efficient Torque Transfer • Accepts Misalignment • Cushioned and Delay Start • Eliminates Vibration Transfer

Between Motor and Load • Permits Shock Loading • Low Maintenance • Simple Installation & Operation • Increases Seal & Bearing Life • “Green” Technology

Ideal for Applications Subject To: • Vibration • Periodic Load Seizure • Pulsating & Shock Loading • Thermal Expansion • High Starting Inertia / Torque • High Energy Costs • Frequent VFD, Fluid Drive, & Eddy

Current Drive Problems

ASD

Adjustable Speed Drives

10 — 4,000 Hp

1) Magnet Rotor Assembly

4) Hubs and Shrink Discs

Principle of Operation

The MagnaDrive ASD works by transmitting torque from the motor to the load across an air gap. There is no mechanical connection between the driving and driven side of the equipment. The torque is created by the interaction of powerful rare-earth magnets on one side of the drive with induced currents on the other side. No electric power is required. By varying the air gap spacing, the amount of torque transmitted can be accurately controlled, thus permitting speed control.

The MagnaDrive ASD consists of four sets of components: 1) Magnet Rotor Assembly containing rare-earth

magnets, is attached to the load. 2) Conductor Rotor Assembly is attached to the motor. 3) Actuation Components control the air gap spacing

between the Magnet Rotors and the Conductor Rotors. 4) Hubs and Shrink Discs – The coupling hubs are

attached to the motor and load shafts using high strength shrink discs. The shrink disc applies radial compression forces to fasten the hubs to the shafts. No keyways or pins are required for installation.

2) Conductor Rotor Assembly

3) Actuation Components

(Actuator not shown)

Relative motion between the Copper Conductor and Magnet Rotor assemblies induces a powerful magnetic coupling force across the air gap. Varying the air gap spacing between the Magnet Rotors and the Conductor Rotors results in adjustable output speed. The principle of magnetic induction requires relative motion between the magnets and the conductors. This means that the output speed is always less than the input speed. The difference in speed is known as slip. Typically, when the MagnaDrive ASD is operating at full rated motor speed, the slip is between 1% and 3%. The output torque of a MagnaDrive ASD is always equal to the input torque. The motor is only required to produce the amount of torque needed by the load.

The ability of the ASD to transmit power or control speed is not affected by minor angular or offset mis-alignment between the motor and load. Vibration due to misalignment is virtually eliminated. Transmission of vibration across the drive is also eliminated due to the air gap. Vibration is the largest cause of bearing and seal failures. MagnaDrive products reduce harmful vibration and minimize these problems. When installed in a system the MagnaDrive ASD can respond to a process signal. The pressure, flow, level, or other process control signal is received and scaled by a control system, then provided to the MagnaDrive ASD actuator. The actuator adjusts the air gap, which modulates the speed of the load to satisfy the control needs.

Benefits of the MagnaDrive ASD

The MagnaDrive ASD replaces the physical connection between motors and loads with a gap of air. This air gap eliminates harmful vibration, minimizes wear and tear, enhances energy efficiency, increases motor life and protects equipment from overload damage. The result is:

• Increased reliability • Money saved on energy and maintenance

The principal benefits offered by the MagnaDrive ASD are summarized in the following list. Any one of these benefits could justify installation of the MagnaDrive ASD:

• Energy Savings • Increased Reliability • Reduced Maintenance Costs • Improved Process Control • No Harmonic Distortion, or power quality issues • Ability to Operate in Harsh Environments

MagnaDrive ASD’s have been designed for users of rotating equipment who are dissatisfied with the high Total Cost of Ownership that comes with traditional adjustable speed products. MagnaDrive ASD’s are a unique application of rare-earth magnetic technology that provides the Lowest Total Cost of Ownership for our customers by reducing the cost of maintenance, increasing process availability, and improving energy efficiency. In a departure from traditional adjustable speed technology, MagnaDrive Corporation has assembled a portfolio of torque transmission products that reduce vibration and harmonics, thereby increasing equipment life and improving energy efficiency.

• Centrifugal Pumps • Centrifugal Fans & Blowers • Variable Torque Equipment • Centrifuges

Typical Industries • Water & Wastewater • Power Generation • Mining & Cement • Oil & Gas • Chemical Processing • Pulp & Paper • HVAC • Irrigation • Maritime • General Manufacturing • And many more

Typical Applications

Horizontal ASD’s

Vertical ASD’s

Valves & Dampers VFD’s Fluid Drives Eddy Current

Drives ASD’s

Motor & Load Directly Coupled

Yes. Creates vibration transfer and

misalignment problems

Yes. Creates vibration transfer and

misalignment problems

Yes. Creates vibration transfer and

misalignment problems

Yes. Creates vibration transfer and

misalignment problems

No. Torque is transmitted through air gap, which

minimizes vibration and tolerates misalignment

Increases Bearing, Seal and Equipment Life

No. Greater vibration transfer and

misalignment stresses decrease life

No. Greater vibration transfer and

misalignment stresses decrease life

No. Greater vibration transfer and

misalignment stresses decrease life

No. Greater vibration transfer and

misalignment stresses decrease life

Yes. Air gap minimizes the harmful effect of vibration transfer and

misalignment

Installation Issues

Requires extensive alignment

Requires infrastructure (conduit, HVAC, filters,

cabinets, etc.). Requires extensive

alignment

Bulky and heavy equipment.

Complexity of system. Requires oil storage

and handling. Requires extensive alignment

Complexity of system Bulky and heavy

equipment. Requires extensive alignment

Due to the “disconnected” nature, ASD is much more tolerant of mis-

alignment. Low infrastructure, simple

mechanical installation

Special Requirements

As per equipment manufacturer

Usually requires power filter equipment (VFD’s are susceptible to “dirty

power” ), as well as cooling cabinets for

temperature and dust control. Also requires Inverter Duty Motors (not easy to retrofit), and other peripheral

equipment

Due to weight and size of equipment, special

considerations required for set-up and

operation. Oil Disposal and

Contamination issues

Due to weight and size of equipment, special

considerations required for set-up and

operation

Simple mechanical equipment. No electronic components. Not affected by “dirty power”. Does not

require special cooling cabinets or power control equipment. Works with

any motor (easy to retrofit)

Operational and Maintenance Issues

Multiple failure points with very high

maintenance and expensive spare parts.

Susceptible to hysteresis &

deadband. Cavitation, vibration and flashing

are common. Frequent seal and bearing

failures. No overload protection

Harmonics and electronic system

interference. Bearing “fluting” decreases

motor life and creates harmful vibration. Frequent seal and

bearing failures. Rapid component

obsolescence. No quick restart capability.

Short service life. Environmental disposal

issues. No overload protection

High maintenance and expensive spare parts.

Uses hazardous materials (i.e. oil) and

environmental contamination and disposal are normal

issues. Seal and bearing failures are common. Minimal

overload protection

High maintenance. Multiple internal drive bearing failures. Seal and bearing failures

are common. Increased vibration.

Minimal overload protection

ASD is a “Green” product. Efficient torque

transfer. Simple to operate and maintain. No physical connection between motor and load with resulting increased

equipment life (e.g. seals, bearings). No Harmonics or electronic interference. Rapid restart capability.

Long motor life due to low inrush current , while operating at its most

efficient speed

System Efficiency & Energy Savings

Very low to moderate. Energy is wasted due to restricted flow and additional load on the

motor

Standalone VFDs are efficient. However,

dramatic energy efficiency losses occur

with filters, transformers, cooling

systems and other power conditioning

equipment. Inherent losses from system

misalignment

Low. Frictional losses between impeller and rotor, and between the oil and housing walls.

Losses also from system misalignment

Moderate. Losses due to additional power required to energize

magnets and for water cooling applications

above 250 Horsepower

High. ASDs are approximately 97%

efficient with no additional losses for ancillary

equipment. Minimal loss for water cooling above

500 Horsepower

MagnaDrive’s “Green” disconnected torque-transfer technology reduces your total cost of ownership by lowering maintenance and operating costs, increasing process

availability, and improving system reliability.

Lowest Total Cost of Ownership

MagnaDrive Air-Cooled ASD’s

MagnaDrive Air-Cooled Adjustable Speed Drives use the movement of air over the spinning conductors to dissipate the heat that is created as a result of “slip” between the magnet rotors and the conductors. This slip is directly related to the amount of torque transmitted by the ASD and is adjusted by varying the air gap between the rotors and conductors. Typically, Air-Cooled ASD’s are used in applications where the motor horsepower ranges between 10 and 500 Hp. When the motor horsepower is greater than 500 Hp or when the speed of the motor is low, a Water-Cooled drive may be recommended.

Air-Cooled ASD Accessories To meet our customers’ varying application needs, MagnaDrive Corporation offers a wide selection of Air-Cooled Adjustable Speed Drive accessories.

ACTUATORS: MagnaDrive has selected a standard set of Electric Actuators to be used with our ASD’s. These actuators are designed to accept an analog input signal from your control system and to position the ASD to give the right speed for your process.

RIGID PEDESTAL MOUNTS: For larger ASD applications that require additional load shaft support (i.e. typically in Split-Case Pumps), MagnaDrive Corporation offers the Rigid Pedestal Mount option.

VERTICAL KITS: For vertical applications, a specially designed housing is provided for the ASD. An optional Thrust Pot is available and offers the ability to incorporate a non-reversing clutch and / or a shaft adjustment coupling.

TOTALLY ENCLOSED KITS: MagnaDrive Totally Enclosed Kits offer an additional level of value for our customers. By packaging the ASD and actuator in a single, pre-aligned, and easy to install unit, we provide a solution to high-speed and sleeve bearing applications.

MagnaDrive Water-Cooled ASD’s

MagnaDrive Water-Cooled Adjustable Speed Drives use the rotation of the magnet rotors and conductors to centrifugally draw a steady stream of cooling water over the drive components, providing conductive cooling to dissipate heat. Typically, Water-Cooled ASD’s are used in applications where the motor horsepower is above 500 and in applications where the rotational speed of the magnet rotors and the conductors is low enough that air cooling of these components is insufficient. MagnaDrive Corporation has successfully installed its Water-Cooled Adjustable Speed Drives on water supply pump stations, induced draft fans, slurry pumps, water treatment aeration fans, and cooling tower fans as well as many other applications.

MagnaDrive Corporation offers an optional Closed Loop Coolant Circulating System for use with its Water-Cooled Drives. If this option is selected, MagnaDrive will provide a cooling system package based on horsepower and speed of the application. Standard cooling system requirements include a minimum supply of clean water (25 gpm at 60 psi for 2500 Hp / 1800 rpm) and a maximum ambient cooling water temperature of 80° F. Additional features can be provided to meet customer-specific requirements. MagnaDrive Corporation offers both Horizontal and Vertical Water-Cooled ASD configurations to meet your application needs. MagnaDrive Water-Cooled Adjustable Speed Drives are provided with an Oil Lubricated Gearbox and Output Shaft Assembly as standard equipment. For Vertical configurations, Oil Lubricated Thrust Bearings with an AFBMA 40,000 hour life and with 25,000 pounds of vertical down-thrust capacity are standard equipment.

Technical Data

ASD Size

DBSE (in)

Conductor Rotor Assembly (See Note 3) Magnet Rotor Assembly Torque (ft*lb) Actuation

Ø (in)

Width (in)

A (in)

Wt (lb) (Cu/Al)

Dist. to CG (in) (Cu/Al)

WR2

(lbf*in2) (Cu/Al)

Wt (lb)

Dist. to CG* (in)

WR2

(lbf*in2) Peak

Linear

Per Slip rpm

Arm Length

(in)

Linear Force (lbf)

6.5 8.52 8.10 6.76 .50 11 1.61 86 25 3.57 110 30 .108 4.0 20 8.5 8.61 10.10 6.76 .50 16 1.79 187 34 4.12 264 60 .291 4.0 20

10.5 12.11 13.50 8.91 1.0 54 2.52 1,235 99 4.82 823 90 0.52 6.0 60 12.5 12.11 15.75 8.91 1.0 73 2.64 2,157 118 5.26 1,342 210 1.65 6.0 80 14.5 12.11 17.75 8.91 1.0 90 2.76 3,528 134 5.66 2,136 315 3.09 6.0 100 16.5 12.96 20.00 9.54 1.0 137 2.59 6,429 194 5.89 3,831 450 5.18 6.0 130 18.5 14.43 22.00 9.11 1.0 155 2.45 9,218 199 7.33 5,260 600 8.04 8.0 150 20.5 14.43 24.00 9.11 1.0 178 2.36 12,890 228 7.60 7,879 780 11.80 8.0 180

22.5 16.71 24.63 10.25 1.0 202 177

2.88 2.72

16,532 14,587 327 8.97 12,730 1,020 22.00 10.0 350

24.5 18.50 28.63 10.60 1.0 286 254

2.39 2.17

29,464 25,837 510 9.30 25,004 1,240 40.46 11.0 500

26.5 18.50 28.63 10.60 1.0 286 254

2.39 2.17

29,464 25,837 522 9.42 26,347 1,500 47.82 11.0 500

20.5 w/ 22.5 Conductor 14.48 24.63 9.25 1.0 200

175 2.48 2.34

16,329 14,384 229 7.61 7,890 780 11.80 8.0 180

22.5 w/ 24.5 Conductor 16.71 28.63 10.25 1.0 304

255 3.02 2.83

33,061 27,392 333 8.74 12,843 1,020 22.00 10.0 350

24.5 w/ 28.5 Conductor 18.50 30.63 10.60 1.0 347

298 2.64 2.39

42,031 35,085 510 9.30 25,004 1,240 40.46 11.0 500

26.5 w/ 28.5 Conductor 18.50 30.63 10.60 1.0 347

298 2.64 2.39

42,031 35,085 522 9.42 26,347 1,500 47.82 11.0 500

Notes: 1. All ASD data include standard sized hubs / shrink discs (data will vary

slightly with job specific shaft sizes).

2. Contact MagnaDrive™ Corporation Applications Engineering for system evaluation and sizing confirmation.

3. Conductor Rotor Assembly (Cu/Al) dual data for units 22.5 and larger: Copper Conductors (Cu) on top, Aluminum Conductors (Al) on bottom.

Horizontal Water-Cooled ASD's

Model Length

(L)(inches)

Height (H)

(inches)

Width (W)

(inches)

Weight (lb)

Torque Per Slip

RPM (ft-lb)

Torque Peak

Linear (ft-lb)

Cooling Water Flow (gal/min.)

WH-1000 60.3 68.3 44.1 5,123 88 3,160 15 WH-2500 60.3 68.3 44.1 5,123 177 7,860 35 WH-4000 74.3 81.3 56.2 11,368 575 18,195 64

Vertical Water-Cooled ASD's

Model Diameter

(D) (inches)

Height (H)

(inches)

Weight (lb)

Torque Per Slip

RPM (ft-lb)

Torque Peak

Linear (ft-lb)

Cooling Water Flow (gal/min.)

WV-1000 40.0 62.2 5,300 88 3,160 15 WV-2500 40.0 62.2 5,544 177 7,860 35 WV-4000 52.0 79.0 10,405 575 18,195 50

Air-Cooled ASD’s

Water-Cooled ASD’s

Sample Installations

ASDH 26.5/28.5, w/ Rigid Pedestal Mount, 300HP, Power Plant, China

ASDH 12.5, 60HP, Airport HVAC Pump, Houston, TX, USA

ASDH 26.5, w/ Rigid Pedestal Mount, 355HP, Water District, Las Virgenes, CA, USA

ASDH 14.5, 100HP, Water / Wastewater, Albuquerque, NM, USA

ASDH 22.5, 300HP, Conveyor, Pulp & Paper, Japan ASDH 20.5, 300HP Pump, Oil & Gas, Owasso, OK, USA

ASDH 16.5, 75HP Pump, Mining, Trona, CA, USA

ASDV 18.5, 125HP, Water / Wastewater, WA, USA

WV-1000, 250HP Pump, Water / Wastewater, Saginaw, MI, USA

ASDH 16.5, 100HP Pump, Water / Wastewater, Corpus Christi, TX, USA

ASDH 18.5, 50HP Fan, Water / Wastewater, Portland, OR, USA

Sample Installations

ASDH’s 3-20HP Pumps, Water / Wastewater, Ashland, OR, USA

ASDH 20.5, 200HP Fan, Power Generation, Elk River, MN, USA ASDH 20.5, 250HP Pump, Irrigation District, ID, USA

Water Cooled ASD’s, 1250HP Pumps, Municipal Water / Wastewater, GA, USA

ASDV’s 50 - 100HP Pumps, Municipal Water / Wastewater, Lorain, OH, USA

ASDH 14.5, 160HP Pump, Oil & Gas, Shreveport, LA, USA

ASDH 14.5, 20HP Pump, Irrigation, OR, USA

ASDH 20.5, 250HP Pumps, Mining, Canada ASDV 14.5, 60HP Pumps, Water / Wastewater,

Port Angeles, WA, USA

ASDV 14.5, 100HP Pump, Water /

ASDV 18.5, 125HP Pump, Water / Wastewater, Lompoc, CA, USA

ASDH 20.5, 250HP Pump, Mining, Elko, NV, USA

MagnaDrive Corporation 600 108th Avenue NE, Suite 1014, Bellevue, Washington 98004

Tel. (425) 463-4700 / Fax (425) 463-4747 info@magnadrive.com / www.magnadrive.com

MagnaDrive is a trademark of MagnaDrive Corporation. © MagnaDrive Corp. All rights reserved.

ASD Sample Installations

About MagnaDrive MagnaDrive Corporation was founded in 1999, and is based out of Bellevue, WA. The company’s breakthrough magnetic technology provides a cost effective solution to increase reliability and lower maintenance expense while achieving energy savings and process control. The impact and potential of the technology was recognized by Industry Week magazine, which selected MagnaDrive as Technology of the Year in 2001. MagnaDrive was selected by Inc. Magazine as one of the 500 fastest growing private companies in the United States. Recently, Deloitte named MagnaDrive one of the 100 fastest growing technology companies in North America. MagnaDrive offers a family of products to accomplish a broad range of operating objectives: Reliability, Speed Control, Torque Management, Cushioned Start, Vibration Control and Misalignment Tolerance.

ASDH 10.5, 60HP Pumps, Hotel Water Supply, Seattle, WA, USA

ASDH 20.5, 250HP Hot Oil Pump, Oil & Gas, Lima, OH, USA