With low speeds and high torques SEW-EURODRIVE AC motors are the optimum partners. Our AC gearmotor is the combination of AC motor and reduction gear unit in an especially short design where the motor shaft is already part of the first gear stage. It can be operated both directly on the supply system with 50 Hz (optional 60 Hz) - single or multi-speed - and infinitely speed controlled with the frequency and drive inverters from SEW-EURODRIVE.

We are facing your requirements

All AC motors are also available in explosion-proof design compliant with ATEX100a. For protection against corrosion, please ask us about our surface and corrosion protection measures.

We guarantee power density, design diversity, overload capacity and reliability through proven design features, e.g.

• Minimum space requirements
• Flexible and robust design
• Wide range of possible combinations, supported by an optimum range of additional features
• Low-noise running

Other features:

• Low-maintenance and reliable through long brake service life
• Safe braking in accordance with the fail safe principle
• Selectable brake torque
• Antinoise brake
• Single-speed with fixed speed or multi-speed with two or three speeds

The brake rectifier is installed in the terminal box or as IS plug connector as standard but is also available in control cabinet design.
In the power range of 1.1 to 45 kW, all standard 4-pole SEW AC motors comply with the lowest EFF2 efficiency requirement.
The SEW AC geared brake motor is a combination of an AC brake motor and a reduction gear unit in a particularly compact design, in which the motor shaft is itself part of the first gear stage.

Special characteristics:

• Connection through terminal boxes, IS, ASA1, ASD1, AMA1 or AMD1 plug connectors
• High switching frequency and positioning accuracy due to extremely short response and reaction times of the mechanical brake
• Low maintenance and high reliability due to long brake service life
• Safe braking based on a fail-safe principle
• Low-noise brake
• Operation with fixed speed or pole-reversible
• Infinitely variable electronic speed control via MOVITRAC^® 07A , MOVIDRIVE^® - or MOVIDRIVE^® compact -inverters
• Many special functions available, e.g. temperature monitoring, forced cooling, additional inertia mass, manual brake release, installation of incremental or absolute encoders
• MOVIMOT^® with integrated frequency inverter for power ranges up to 3 kW
• MOVI-SWITCH^® with integrated switching and protection functions for power ranges up to 3 kW

• For servo drive requirements
• 4-pole version
• With sinusoidal encoder as standard feature
• Torque from 5...200 Nm
• Control through MOVIDRIVE ® and MOVIDRIVE^® compact drive inverter with field-oriented CFC control mode
• Can be loaded up to 3-/4-times the rated motor torque
• Can be combined with all gear unit types in the SEW modular system

• BM or BMG brake
• V or VR forced-cooling fan
• Encoder with rectangular signals
• Pre-fabricated cables

Perfect precision, highest dynamic properties and high speed

The new generation of SL2 synchronous linear motors from SEW-EURODRIVE SL2 synchronous linear motors: Precise, reliable and safe at any speed

The high demands on machine cycle times, acceleration and linear travel speeds for drive systems in handling, transportation and production are increasing steadily. The new SL2 synchronous linear motors from SEW-EURODRIVE are the perfect solution for use in highly-dynamic and flexible processing machines, handling technology or pick-and-place applications.

The direct generation of linear motion and force means that no mechanical transmission elements such as spindles, ball bearings or toothed belts, which would be subject to wear, are required. An optimum force-density ratio is achieved by using the latest winding technology and a laminated iron core. The SL2 synchronous linear motor with convection cooling is practically maintenance-free, offers maximum reliability and availability, high control quality, speed and accuracy. Another advantage is the compact design of the SL2 synchronous linear motor.

SEW-EURODRIVE offers the matching MOVIDRIVE ® compact MCH servo inverter (in preparation for MOVIDRIVE ® synchronous linear motors, size B) to create a perfect system for individual drive solutions from one source. Another advantage is that the familiar functionality of the MOVIDRIVE ® series is also available for the operation of linear motors.

SL2 synchronous linear motors save time during project planning

The project planning and configuration of system concepts that place high demands on speed and precision or require high travel speeds and repetition accuracy is very time-consuming. Apart from the calculation and selection of the drive system, the time spent on designing the motor system in the machine base is the decisive factor in project planning. Therefore, for the SL2-Advance and SL2-Power Systems of the convection-cooled SL2 synchronous linear motors, SEW-EURODRIVE now performs the decisive and also time-consuming planning for integrating the synchronous linear motor. As a result, the user is offered an ingenious and efficient assembly system. Result: Tried and tested functionality for every application.

Advantages of the system solution for your application

Dynamic and precise mechanical components are combined with intelligent drive electronics and control devices from the SEW-EURODRIVE modular system to offer the perfect system solution for every application. Naturally, all components are available in the high quality only offered by drive technology made by SEW-EURODRIVE.

• SL2 synchronous linear motor
• MOVIDRIVE ® compact servo inverter (MOVIDRIVE ® series B in preparation)
• Operating software MOVITOOLS ® with a startup function for SL2
• Technology function
• Engineering Support
• After Sales Support
• CAD files for all motor series

Synchronous linear motors are convection cooled and available in the rated power range of 280 ... 6000 N. Peak powers of 12600 N can be achieved. The motors are available in the rated velocity classes 1 m/s, 3 m/s or 6 m/s to achieve a system-specific optimization of the motor system. Special windings are also readily available.

Always the right choice: SL2 synchronous linear motor

If motors are required to cope with increasing speeds and positioning accuracy, conventional motors soon reach their limits. As a result, convection-cooled synchronous linear motors are used more and more frequently in servo applications.

The three SL2 synchronous linear motors from SEW-EURODRIVE offer highly-dynamic and precise positioning down to the μ range with the high quality expected from SEW.

Further advantages of the SL2 synchronous linear motors:

• Faster acceleration as there are no rotating mass moments of inertia
• Good synchronous operation accuracy
• No backlash or spring effects associated with mechanical transmission components
• No wear due to contactless energy transfer
• Excellent positioning performance
• High traveling velocities (e.g. v > 3 m/s)
• Low noise development even with high supply voltages
• Very good control characteristics
• High stiffness of the control system in connection with the MOVIDRIVE ® compact drive inverter (MOVIDRIVE ® series B in preparation)
• Long service life and reliability of the system
• Enclosure IP65 for SL2-Basic
• Low operating and maintenance costs
• Low-overhead system due to convection cooling enables innovative machine designs
  

Synchronous linear motors SL2 convince:

• Transportation and handling technology, e.g. two or three-axis gantries, feeding units, take-offs
• Loading gantry systems
• Assembly and handling technology
• Packaging technology
• Wood processing
• Drilling
• Cutting and separation technology
• Small presses
• Special machine designs

Special characteristics:

• Connection through terminal boxes, IS, ASA1, ASD1, AMA1 or AMD1 plug connectors
• High switching frequency and positioning accuracy due to extremely short response and reaction times of the mechanical brake
• Low maintenance and high reliability due to long brake service life
• Safe braking based on a fail-safe principle
• Low-noise brake
• Operation with fixed speed or pole-reversible
• Infinitely variable electronic speed control via MOVITRAC^® 07A , MOVIDRIVE^® - or MOVIDRIVE^® compact -inverters
• Many special functions available, e.g. temperature monitoring, forced cooling, additional inertia mass, manual brake release, installation of incremental or absolute encoders
• MOVIMOT^® with integrated frequency inverter for power ranges up to 3 kW
• MOVI-SWITCH^® with integrated switching and protection functions for power ranges up to 3 kW

Widths of the synchronous linear motors:

• 50 mm
• 100 mm
• 150 mm
• 200 mm
• 250 mm

Primaries

Available motor lengths per width:

• SL2-P...VS = Very Short
• SL2-P...S = Short
• SL2-P...M = Medium
• SL2-P...ML = Medium Long

Secondary

Available lengths of magnet strips per width:

• 64 mm
• 128 mm
• 256 mm
• 512 mm

Availablility

SL2-Basic was made available in all sizes at the start of 2004.
SL2-Advance System and SL2-Power System will be available in sizes 50, 100 and 150 as of December 2004.

The operation of systems in areas with explosive air-gas or air-dust mixtures requires drive units equipped with special protection features. This requirement makes explosion-proof motors and gear units subject to increased safety features.

The new regulation 94/9/EG (ATEX100a) contains all requirements for units operated in areas with increased danger of explosion and for the first time includes non-electrical devices in the explosion protection section. SEW-EURODRIVE develops and produces explosion-proof motors and gear units (in preparation) according to ATEX100a regulation that offer many additional features:

All drives are equipped with the standard enclosure of IP54. The gray cast terminal box has a threading with metric cable screw fitting closing parts meeting ATEX100a. The gaskets are of improved quality to increase heat resistance; an external protective conductor connection has been installed. Reinforced fan guards and brake sealing rings additionally retained with clamping strips are also standard for SEW.

Vertical drives are equipped with a protective cover and there is a speed or stalling monitoring feature for mechanical variable speed gear units.

SEW-EURODRIVE meets all quality requirements regarding unit safety. Any problems occurring during system operation will be analyzed and considered according to the three unit safety categories.

SEW is offering motors for explosion-proof operating conditions with the following type of explosion protection:

In operating conditions with explosive air-gas-mixtures, the drives are meeting the requirements for type of explosion protection "flameproof enclosure," "increased safety" or "type of protection n." For areas with explosive air-dust mixtures, the standard "Elektrische Betriebsmittel zur Verwendung in Bereichen mit brennbarem Staub" (Electrical devices for the operation in areas with flammable dust) has been met.

The production process of the manufacturer, SEW-EURODRIVE, has been audited and certified according to ATEX100a regulation