6675.260 ? MR 75 AC servo motors
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AC Servo Motors with High Power Density AC servo motors without casing with rated torques between 0.45 and 33 Nm and five different flange sizes, rated speeds of 3,000 r.p.m., other speeds on request. All motors are available with brakes. Main Characteristics C maintenance-free, since brushless C high dynamics C compact dimensions due to rare earth magnet material with high power density C built-in resolver for sinusoidal commutation, other position sensors as options C IP 54 protection, optional shaft sealing with radial sealing ring Positioning and feed movements with high dynamics and accuracy in C Handling and assembly systems C Electronics production machinery C Semiconductor production machinery C Measuring and testing machinery C Optical discs production machinery (CDs, DVDs, ...) C Machine tools and metal working machinery C Packaging machinery C Textile machinery C Plastics processing machinery C Coiling machinery C and many other applications ESR Drive System Packages MR 75 servo motors are adapted to the digital and analog ESR servo drives. Servo drives and servo motors with or without gearbox, complete with position sensors and, if required, brakes are available as drive system packages. For further information, see the back of this data sheet. ESR Pollmeier GmbH www.esr-pollmeier.de

Contents Operating Principle of a Servo Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Construction of the Servo Motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Type Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

Construction types and equipment An overview of the different types and the available equipment (holding brake, key, etc.) is given in the type code below. Special design In addition to the stated types and equipment, special designs are possible, e. g. motors with hollow shafts, special flange, adjusted winding, etc. If required, please contact ESR. Type Code The type code clearly identifies a servo motor equipped in a certain way. Example: Frame size and rotor length Xx first number: frame size (1..5) xX second number: rotor length (1..8) Assembly code or other classification Internal...

1) with resolver, without brake /2) with resolver, with brake /3) with high-resolution encoder, without brake /4) with high-resolution encoder, with brake All dimensions in millimeters, CAD files (3D/Step) are available on request. ESR Pollmeier GmbH, 64372 Ober-Ramstadt, phone +49 6167 9306-0, fax +49 6167 9306-77, www.esr-pollmeier.de

Mechanical Data Mounting standards Flange-mounted motor, flange according to DIN 42 677; special flange on request Mounting positions Construction types Abbreviation acc. to DIN IEC 34 part 7: IM B 5; special construction types on request Flange accuracy Standard acc. to DIN 42 955; higher accuracy on request Bearings lubrication Bearing shields High-quality light-metal alloy Without housing; stator package welded and cast Vibration intensity Rotor dynamically balanced according to vibration intensity stage R, S according to DIN EN 60034-14 (VDE 0530-14) on request Rotor with rare earth...

Electrical Data General The motors are three-phase synchronous motors with 5 pole pairs. They comply with the DIN EN 60034-1 (VDE 0530) Rules for Electrical Machines. The motors are designed for connection to servo drives with DC-bus voltages of 320 V or 560 V, see back of this data sheet. Other voltages on request. Connector, rotating (power: 8-pin, position sensor: 12- or 17-pin) The rated output in the technical specifications applies to operating conditions defined according to DIN EN 60834-1 (VDE 0530): installation location below 1000m above sea level, cooling air temperature # 40 ºC,...

Position sensors with a higher resolution: High-resolution incremental encoder (Option -G06) Sincos (Hiperface) encoder (Option -G09 and -G10) EnDat encoder (Option -G11 and -G12) In connection with the digital servo drives and the ESR multi-axis servo system, a high-resolution incremental encoder, a Sincos (Hiperface) encoder, or an EnDat encoder (with optical position acquisition) can be used. The high resolution improves control quality and smooth running. Furthermore, by using analog incremental signals a reduction of the band width is achieved compared to the transmission of the actual...

Holding Brake General The optional holding brake is a spring pressure safety brake. The supply voltage The brake is designed as holding brake, it usually serves for holding the motor shaft at standstill. Occasional load brakings, e. g. in case of an emergency-stop, are permitted. It is recommended to protect the brake rectifier using a voltage- dependent resistor (varistor). Function The braking force is generated by spring pressure; the torque is transferred from the brake to the motor shaft via a toothed bushing. Connection to the Servo Drive General For connection to the servo drive, the...

Torque Increase at Intermittent Duty S3 General The typical working cycle of a servo drive consists of load phases in which the motor runs at high speed or torque interrupted by periods in which it is operated at reduced power or is standing still. Therefore, the design of the drive should not only consider the desired rated speed but the ratio of load and rest phases to specify a drive which meets the requirements optimally. Operating modes in compliance with VDE 0530 The servo drive technology differs between the following operating modes: C S1 = continuous duty C S3 = intermittent duty;...

Selection Criteria for Servo Motors and General Overview Selection criteria Major criteria for selecting a servo motor are: C standstill torque M0 200 C rated speed nN C torque at rated speed MN C ratio moment of inertia Jmotor to Jload On the basis of rated current IN, the corresponding servo drive or servo power module is selected for the motor. General overview Values for standstill torque and rated speed can be found in the overview below. For an assignment of servo motors to ESR servo drives or servo power modules, see page 11ff (320 V) and page 15ff (560 V). All other electrical and...