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ESR Pollmeier
Servo motors, linear motors: MR 74 AC servo motors

Servo motors, linear motors: MR 74 AC servo motors

Product catalog summary

Main Characteristics
AC servo motors provide rated torques from 0.1 to 70 Nm, with eight flange sizes and speeds up to 6,000 r.p.m. They are maintenance-free due to their brushless design and feature high dynamics and compact dimensions, utilizing neodymium magnets. A built-in resolver is standard for sinusoidal commutation, with optional position sensors. The motors have IP 65 protection and optional brakes.

ESR Drive System Packages
MR 74 servo motors are compatible with ESR's digital and analog servo drives, available with or without gearboxes, position sensors, and brakes.

Applications
These motors are ideal for high dynamics and accuracy in applications such as handling and assembly systems, electronics production, semiconductor machinery, measuring and testing machinery, optical disc production, machine tools, packaging, textile, plastics processing, and coiling machinery.

Operating Principle of a Servo Drive System
A servo drive system includes a servo motor and drive, forming a closed control loop with the motor's position sensor system, ensuring smooth operation even at low speeds. It supports torque, velocity, and position control modes, with integrated acceleration and deceleration ramps.

Construction of the Servo Motors
The MR 74 series are permanent-magnet three-phase synchronous motors designed for high dynamics and positioning accuracy, featuring a stator with a three-phase winding and a rotor with neodymium iron boron magnets.

Type Code
The type code identifies the specific configuration of a servo motor, including frame size, rotor length, DC-bus voltage, rated speed, motor position sensor, motor connection, holding brake, shaft type, and special design options.

Mechanical Data
The motors are flange-mounted according to DIN standards, with various mounting positions and construction types available. They are self-cooling and have a protection class of IP 65, designed for a service life of 20,000 hours under specified conditions.

Electrical Data
The motors are three-phase synchronous with 3 pole pairs, designed for 320 V or 560 V DC-bus voltages, complying with DIN EN 60034-1 standards, and suitable for tropical climates. The servo drive monitors power consumption to prevent overloading.

Motor Position Sensors
Servo motors are equipped with position sensors, typically resolvers or optical sensors like Sincos (Hiperface), high-resolution incremental, or EnDat encoders, providing high accuracy and dynamics, with multi-turn types offering absolute position determination for 4096 revolutions.

Technical Specifications Overview:

1. Motor Specifications:
- Detailed specifications for MR 74 series AC servo motors, including models MR 7422 to MR 7478.
- Key parameters include rated speed, rated output, rated current, torque at rated speed, standstill torque, peak torque, and peak current.
- Additional specifications cover torque constant, voltage constant, resistance, inductivity, electrical time constant, rotor inertia, and weight.
- Dimensions for each motor type are provided, with options for different configurations.

2. Motor Types and Performance:
- Motors are categorized by type codes and designed for a DC-bus voltage of 560 V.
- Performance metrics such as rated speed (r.p.m.), rated output (W or kW), and torque values (Nm) are specified for each motor type.
- Maximum achievable values depend on the servo drive used.

3. Drive System Packages:
- ESR Pollmeier offers complete servo drive system packages, including servo drives, motors, position sensors, and optional brakes.
- Packages are designed for seamless integration and reliable operation, with all components tested as combinations.
- Digital and analog servo drive systems are available, with specifications for power supply, DC-bus voltage, rated current, peak current, rated torque, and shaft power.
- Options for positioning control and field bus integration are mentioned.

4. Additional Information:
- Contact information for ESR Pollmeier GmbH, located in Ober-Ramstadt, Germany.
- Specifications are for informational purposes and may be subject to change without notice.

Catalog excerpts

Servo motors, linear motors: MR 74 AC servo motors-3

Frame size and rotor length Xxfirst number: frame size (0..7)xXsecond number: rotor length (1..8) > Assembly code or other classification Internal coding of ESR, given for various feature combinations. Statement of the assembly code is not required if allother features unequal zero are stated and the customer-specific equipment is described. For above-mentioned exampleMR 7436-U3-N030-G01-A0DӔ would be sufficient. > DC-bus voltage U3motor for 320 V DC-bus voltage (corresponds to 230 V supply voltage)U5motor for 560 V DC-bus voltage (corresponds to 400 V supply voltage) > Rated speed in 100 r.p.m.,...

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Servo motors, linear motors: MR 74 AC servo motors-6

General The motors are three-phase synchronous motors with 3 pole pairs. They complywith the DIN EN 60034-1 (VDE 0530) Rules for Electrical Machines. Voltage The motors are designed for connection to servo drives with DC-bus voltages of320 V or 560 V, see back of this data sheet. Other voltages on request. Insulation Insulation class F acc. to DIN VDE 0530. Suitable for use in tropical climates. Performance The rated output in the technical specifications applies to operating conditionsdefined according to DIN EN 60834-1 (VDE 0530): installation location below 1000m above sea level, cooling air...

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Servo motors, linear motors: MR 74 AC servo motors-7

Data Sheet 6674.260, V 3.0MR 747 Optical position sensors: 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, byusing analog incremental signals a reduction of the band width is achieved com- pared to the transmission...

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Servo motors, linear motors: MR 74 AC servo motors-9

General Table Technical SpecificationsӔ shows detailed electrical and mechanical data ofthe different motors which are grouped according to the DC-bus voltage: C U > ZK = 320 V page 12ff C U > ZK = 560 V page 17ff Operating mode speci-fication The values in the tables of the technical specifications of the individual motors arebasically stated for continuous duty S1. > ESR Pollmeier GmbH, 64372 Ober-Ramstadt, phone +49 6167 9306-0, fax +49 6167 9306-77, www.esr-pollmeier.de size="-1">

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Servo motors, linear motors: MR 74 AC servo motors-10

Selection criteria Major criteria for selecting a servo motor are: C standstill torque M > 0 200 C rated speed n > N C torque at rated speed M > N C ratio moment of inertia J > motor to J > load On the basis of rated current I > N , the corresponding servo drive or servo powermodule 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 16ff (560 V). General All other electrical and mechanical specifications of the different...

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Servo motors, linear motors: MR 74 AC servo motors-11

Order Number MotorRated Speedn > N [ r.p.m.]Rated TorqueM > N [Nm]Standstill TorqueM > 0 200 [Nm]Standstill CurrentI > 0 200 [A > rms ]Servo Drive or Servo PowerModule with Rated Current ... MR 7401-U3-N0606,0000.10.10.62 AMR 7402-U3-N0606,0000.20.21.02 A MR 7411-U3-N0343,4000.40.50.92 A MR 7411-U3-N0606,0000.40.51.52 A MR 7412-U3-N0343,4000.70.91.22 AMR 7412-U3-N0606,0000.70.92.14 AMR 7414-U3-N0343,4001.41.62.14 A MR 7414-U3-N0606,0001.41.63.64 A MR 7422-U3-N0343,4001.61.82.94 A MR 7422-U3-N0606,0001.61.85.06 AMR 7424-U3-N0343,4002.73.14.46 AMR 7432-U3-N0343,4001.92.53.44 A MR 7434-U3-N0343,4003.64.85.76...

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Servo motors, linear motors: MR 74 AC servo motors-12

Motors MR 7401 to MR 7411 for U > ZK = 320 VMR 7401MR 7402MR 7411MR 7411 -N060-N060-N034-N060Rated speedn > N r.p.m.6,0006,0003,4006,000Rated outputP > N W56113120220Rated currentI > N A > rms 0.60.90.91.5Torque at rated speedM > N Nm0.10.20.40.4Standstill torqueM > 0 200 Nm0.10.20.50.5Standstill currentI > 0 200 A > rms 0.61.00.91.5Peak torqueM > max Nm0.40.82.02.0Peak currentI > max A2.84.33.56.0Torque constantK > t Nm/A > rms 0.20.20.40.2Voltage constantK > e V/1000 r.p.m.10.012.554.031.1Resistance phase-phaseR > u-v ֢Ħ38.518.870.022.9Inductivity phase-phaseL > u-v mH6.54.527290.6Electr. time...

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Servo motors, linear motors: MR 74 AC servo motors-13

Motors MR 7412 and MR 7414 for U > ZK = 320 VMR 7412MR 7412MR 7414MR 7414 -N034-N060-N034-N060Rated speedn > N r.p.m.3,4006,0003,4006,000Rated outputP > N W250430500870Rated currentI > N A > rms 1.22.02.03.6Torque at rated speedM > N Nm0.70.71.41.4Standstill torqueM > 0 200 Nm0.90.91.61.6Standstill currentI > 0 200 A > rms 1.22.12.13.6Peak torqueM > max Nm3.63.66.46.4Peak currentI > max A4.98.58.414.6Torque constantK > t Nm/A > rms 0.60.30.70.4Voltage constantK > e V/1000 r.p.m.54.031.154.031.0Resistance phase-phaseR > u-v ֢Ħ35.012.514.14.5Inductivity phase-phaseL > u-v mH13645.357.419.1Electr....

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Servo motors, linear motors: MR 74 AC servo motors-14

Motors MR 7422 and MR 7424 for U > ZK = 320 VMR 7422MR 7422MR 7424 -N034-N060-N034Rated speedn > N r.p.m.3,4006,0003,400Rated outputP > N W5701,000960Rated currentI > N A > rms 2.94.94.4Torque at rated speedM > N Nm1.61.62.7Standstill torqueM > 0 200 Nm1.81.83.1Standstill currentI > 0 200 A > rms 2.94.94.4Peak torqueM > max Nm8.08.012.7Peak currentI > max A12.722.017.9Torque constantK > t Nm/A > rms 0.60.30.6Voltage constantK > e V/1000 r.p.m.39.722.945.8Resistance phase-phaseR > u-v ֢Ħ6.62.43.7Inductivity phase-phaseL > u-v mH3.11.02.9Electr. time constantT > el ms0.470.420.77Rotor inertiaJ...

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Servo motors, linear motors: MR 74 AC servo motors-15

Motors MR 7432 and MR 7434 for U > ZK = 320 VMR 7432MR 7434 -N034-N034Rated speedn > N r.p.m.3,4003,400Rated outputP > N W6801,280Rated currentI > N A > rms 2.74.5Torque at rated speedM > N Nm1.93.6Standstill torqueM > 0 200 Nm2.54.8Standstill currentI > 0 200 A > rms 3.45.7Peak torqueM > max Nm8.821.0Peak currentI > max A16.435.0Torque constantK > t Nm/A > rms 0.70.8Voltage constantK > e V/1000 r.p.m.49.453.8Resistance phase-phaseR > u-v ֢Ħ6.43.2Inductivity phase-phaseL > u-v mH18.28.2Electr. time constantT > el ms2.832.59Rotor inertiaJ > 3 2 R 10 kg m 0.080.16Weightkg3.54.8Note: The maximum...

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