6677.260 ? MR 77 AC servo motors
28Pages

AC Servo Motors with High Power Density AC servo motors with rated torques between 0.2 and 43 Nm, rated speeds up to 8,000 r.p.m., other speeds on request. All motors MR 772x or higher are available with brakes. Main Characteristics C maintenance-free, since brushless C high dynamics C compact dimensions due to high-performance neodymium magnet material C built-in resolver for sinusoidal commutation, other position sensors as options C IP 40 protection, optionally IP 65 Positioning and feed movements with high dynamics and accuracy in C handling and assembly systems C optical disks production machines C packaging machines C textile machines C plastics processing machines C coiling machines C flame cutting machines C measuring and testing machines C electronics production machines C ... ESR Drive System Packages MR 77 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 flange dimension 1: 40 mm, 2: 58 mm, 3: 70 mm, 4: 84 mm, 5: 108 mm, 6: 138 mm, 7: 188 mm xX...

* K = without brake (-M0), K1 = with brake (-MS) – referring to motor with resolver (-G01), other dimensions see individual drawings All dimensions in millimeters. CAD files are available on request (DXF/2D). 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 motor, flange according to IEC standard, fit j6 (MR 771x: h7); special flange on request Mounting positions Construction types IM B5 acc. to DIN 42 950; special construction types on request Flange accuracy Ball bearings Service life $ 20,000 operating hours Matt black (RAL 9005), no solvent resistance Bearing shield and enclosure High-quality light-alloy Vibration intensity Vibration intensity stage N acc. to DIN ISO 2373 Rotor with rare earth permanent magnets Protection class IP 40, IP 65 as an option, with shaft sealing ring Acc. to DIN 748,...

Winding protection The servo drive monitors the power consumption of the motor using an I2t circuit and protects it against overloading. In addition to the monitoring by the servo drive, the winding is monitored by PTC resistors installed in the motor. If the permissible winding temperature (155 ºC) is exceeded, the servo drive responds to the abrupt rise of the PTC resistance. Motor Position Sensors General For determining position and speed, the servo motors are equipped with a motor position sensor. Two types of position sensors are available: resolvers and EnDat encoders. Usually,...

EnDat encoder (absolute position via parameter channel) incremental encoder signals (sine) incremental encoder signals (cosine) (reference signal not available) With the single-turn types of optical motor position sensors (option -G11), the position acquisition for several revolutions is transmitted to a software counter in the servo drive. Therefore, for positioning operating modes, a reference run has to be carried out after each switch-off and switch-on of the control supply voltage in order to determine the absolute position of the axis. With the multi-turn types (option-G12), the...

Connection to the Servo Drive General For connection to the servo drive, the motor is equipped with two connectors. The motor phases (power) are connected with the servo drive using a shielded cable. The motor position sensor is connected with twisted-pair conductors via a multicore shielded cable. The optional brake is connected via the power supply cable. The motor temperature sensor is connected either via the motor position sensor connector (for resolvers) or the power supply cable (for EnDat). Cables (ready-assembled, as well) and cable sets are available as accessories. Torque...

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 JLast 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 torque can be found in the overview below. For an assignment of servo motors to ESR servo drives or servo power modules, see page 10ff (320 V) and page 17ff (560 V). All other electrical and...

Servomotors for UZK = 320 V: Overview and Assignment Rated Speed nN [r.p.m.] Order Number Motor Standstill Current I0 200 [Aeff] Servo Drive or Servo Power Module with Rated Current... Other speeds on request. Corresponding Servo Drives and Servo Power Modules with 320 V DC-Bus Voltage: Servo Drive Family Power supply multi-axis servo system Rated current ESR Pollmeier GmbH, 64372 Ober-Ramstadt, phone +49 6167 9306-0, fax +49 6167 9306-77, www.esr-pollmeier.de