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Allen Bradley - Motors

MPL Servo Motors

The MPL series consists of low-inertia rotary servo motors with premium permanent magnets that are manufactured by Allen-Bradley. These servo motors are designed to fulfill the stringent requirements of various motion systems. The MP-series motors come with a mounting pilot to help operators mount the motor in a system. These motor units have a high torque-to-size ratio, innovative winding technology, good torque performance, rapid acceleration, and the ability to operate with a sustained shaft load. They are appropriate for use in a variety of industries and applications, including handling of materials, automotive, and conversion-type applications. Winding insulating materials are used in each MPL servo motor to improve thermal management. The installation adheres to all local rules and installation standards that improve safety and electromagnetic compatibility, and its IP66 protection ensures protection from strong jet water sprays and dust particles. The working temperature ranges from 0 to 40 degrees Celsius. MPL servo motors are offered in nine frame sizes that range from 63 and 75-millimeter frames to larger frames measuring 100 to 300 millimeters. High-energy rare-earth magnets are used in the MPL servo motors. This series of motors have power ratings ranging from 0.16 to 18.6 kilowatts, with some producing a speed of up to 8000 revolutions per minute (rev/min). Two-pole resolvers, 2000-line encoders, multi-turn encoding systems, and single-turn encoders using the Hiperface encoder protocol are among the available feedback options. Single-turn or multi-turn high-resolution encoders are standard on MP-series low-inertia motors. MPL motors are designed for use with Allen-Bradley controllers. The MP series has motors rated at 200 and 400 volts.

MPL Servo Motors

MPL (Low Inertia) servo motors from Allen Bradley are highly efficient and compact motors that are used for applications that demand motion sensitivity owing to significantly low rotor inertia. These motors have a high torque density (torque with respect to either weight or volume). These motors are brushless and are available in 9 different frame sizes. Premium permanent magnet is used in the construction of these motors. These servo motors are used with a range of Allen Bradley drive series (discussed later). MPL servo motors are ideally used for applications like assembling electronic components, packaging, material handling in different industries, automotive, and metal forming industries.

Mechanical and Electrical Specifications

Rotor and Rotor Magnets

MP Low Inertia servo motors are brushless AC motors. These motors are synchronous motors (recall the fact that magnet is present, no need for induction). For rotor flux production, their rotors are equipped with rare earth magnets which are premium in quality, and high in energy. These magnets pave way for quicker acceleration. Magnets on the rotors of MPL servo motors might have 8 different stack lengths (1 inch to 8 inch and corresponding codes as multiples of 10).

Rotors of these motors have threaded holes at their shaft end.

Stator Winding

Stator winding, which hugely decides the weight of the machine, is the major factor in determining torque and power density. To keep torque and power density high in MPL servo drives, stator winding is also made using innovative technology, and quality material is used for insulating this winding. Powerful rotor magnets and advanced stator windings make this motor provide 40% more torque (w.r.t. size) than conventional motors. This stator winding is also helpful in better heat management.

Motor Connectors and Cables

MPL servo motors can either have a connector that is a circular bayonet, and it faces a shaft (code 2) or these motors could come with a DIN connector that can rotate up to 180 degrees for ease of use. This connector is SpeedTec circular connector (code 7).

MPL servo motors also have brake (or power) connectors and feedback connectors as motion-sensitive applications need them. The supplier of this product will not provide auxiliary feedback, motor feedback, and I/O connector kits as accessories to the buyer.

Cables provided by the factory manufacturer will have standard length. These cables have appropriate sealing to ensure that the motor achieves promised environmental ratings as well as shield termination. These cables meet specifications and requirements of the following standards: NFPA 79 (National Fire Protection Association code 79) compliant, DESINA cable jacket coloring, tray cable rating, 600V insulation rating, RoHS and REACH, UL-Listed. Customers can also go with the option of designing their cables. For this purpose, kits are made available by Rockwell Automation. The construction of the cable would also affect the Electromagnetic Compatibility (EMC) of the system so extreme care is needed while constructing the cable. Shield of either type of cable would need grounding; it could be hazardous otherwise.

Allen Bradley directs its user that connector housings in the case of M40 and M23 can be rotated to make connector placement in a rearward direction. While connector housings for M58 must be removed physically and placed back in 90 degrees increments.

Shaft Seal

Not all servo motors of the MP Low inertia series come with a shaft seal. The user has to decide if, for some applications and the environment, a shaft seal is needed or not. The shaft seal will ensure that dust particles and moisture content does not enter motor bearings. Moreover, the type of use will also determine the frequency or duration of maintenance and replacement of shaft seals because these wear with time. Allen Bradley recommends users of these motors to inspect and maintain this component regularly – typically every 3 months but not to go beyond 12 months.

For these servo motors, nitrile is used to build shaft seals. For smooth operation of the shaft seal, a lubricant is included in the accessories package. To lubricate the shaft seal, the use of a shaft seal kit is recommended provided by Rockwell Automation. For different servo motors in the MPL series, different shaft seal kits are available, e.g., for motor catalog numbers MPL-A15xx and MPL-B15xx, the shaft seal kit with catalog number MPL-SSN-F63F75 is recommended, while for motor catalog numbers MPL-A3xx and MPL-B3xx, the shaft seal kit with the catalog number MPL-SSN-A3B3 is suggested, and so on. Furthermore, Rockwell Automation recommends its users use its shaft seals. If the owner uses shaft seals from any other company, then any sort of warranty (implied or direct) is not entertained by Rockwell Automation.

The presence or absence of a shaft seal will also determine which standards the product will comply with (discussed later in detail).

Mounting Dimensions

For MPL servo motors, the IEC72-1 standard for rotating electrical machines is complied with while making mounting dimensions. Indirectly, it covers frame numbers all from 56 to 400 and flange numbers ranging between 55 and 1080. Their mounting flanges have free mounting holes of type FF.

Frame Sizes

Allen Bradley has used novel design techniques (e.g. while designing stator winding, choosing winding insulation, placement of magnets, choice of magnets, etc.) to keep the size of MPL servo motors as low as possible. As mentioned, motors from this series of Allen Bradley products are available in nine different frame sizes – all being compact and sturdy. These frame sizes and the corresponding codes are as follows:

  • Code 15 indicates a frame size of 63 mm
  • Code 2 indicates a frame size of 75 mm
  • Code 3 indicates a frame size of 100 mm
  • Code 4 indicates a frame size of 115 mm
  • Code 45 indicates a frame size of 130 mm
  • Code 5 indicates a frames size of 165 mm
  • Code 6 indicates a frame size of 215 mm
  • Code 8 indicates a frame size of 265 mm
  • Code 9 indicates a frame size of 300 mm

Encoders and Feedback

Servo motors from the MPL series are used for those motion applications which require high performance. High-resolution encoders are also there to determine the accurate position of the rotor. Thus, these motors have efficient high-resolution feedback systems. This feedback could be either single turn (-E and –S) or multi-turn (-V and -M) through the encoder. In single turn feedback systems, the absolute position of the rotor is fed back to the controller in just one turn while maintaining high resolution. On the other hand, 4096 turns are needed to provide high-resolution feedback in multi-turn encoder systems. This feedback would also be the absolute position of the motor rotor.

 Motors with the –M and –S code can make up to two million counts in one revolution while motors with code –E and –V give up to two hundred and sixty counts in one revolution – all giving smooth performance.

Motors in the MPL series also have the option of an incremental encoder (with Code ‘H’) and resolver (with code ‘R’).

Brake Availability

MPL servo motors could either have a 24V DC brake (code 4) or no brake at all (code 2). If the brake is present, it will keep the motor shaft still or hold it at 0rpm (revolutions per minute) unless applied torque remains below the rated holding torque for the brake. Anyhow, this brake is not to bring the motor to a stop.

For disengaging this brake, a separate power source is needed. This power can be provided by a servo motor controller or an operator control which could be manual.

On-board Memory for Commissioning

To know motor parameters, the system doesn’t need to perform commissioning of these MPL servo motors from scratch. Instead, these motors are equipped with a memory unit to store the identity of the motor. So, upon startup, the system could identify motor, and commissioning time could be reduced significantly.

Voltage Class

Motors from the MPL series are grouped into two classes based on operating voltage: 200V class and 400V class. In the catalog number MPL-xxxxxx-xx7xAA, the first 'x' is to distinguish between voltage classes. Because of two options for voltage, A is for 200V class of motors and B is that for 400V class motors.

Compatibility for Drives

The motor, being the crucial part of a drive system, needs to be designed while considering application requirements and characteristics of other components in the drive system. In other words, the motor’s compatibility with the drive should be kept in mind. MP Low inertia servo motors are compatible with the following Allen Bradley drive systems: Kinetix 5500, Kinetix 6200, Kinetix 6500, Kinetix 6000, Kinetix 300, Kinetix 350, Kinetix 2000, Kinetix 7000, and Ultra3000.

Torque Output

Servo motors from the MPL series give its users a wide range of options for torque. Different motors from this series are capable of providing continuous stall torque in the range of 0.26 to 163Nm while peak stall torque goes up to 278Nm (e.g. catalog number MPL-B980B) starting from 0.77Nm (e.g. catalog number MPL-A1510V). Servo motors in MP Low inertia series give 40% higher torque output than that of other servo motors of the same size.

Speed Output

Servo motors of the MP Low Inertia series can attain speed up to 8000 rpm (revolutions per Minute). Other available options for rated speeds and respective codes are given below.

  • Code B indicates a rated speed of 1000 rpm
  • Code C indicates a rated speed of 1500 rpm
  • Code D indicates a rated speed of 2000 rpm
  • Code F indicates a rated speed of 3000 rpm
  • Code H indicates a rated speed of 3500 rpm
  • Code J indicates a rated speed of 3750 rpm
  • Code K indicates a rated speed of 4000 rpm
  • Code P indicates a rated speed of 5000 rpm
  • Code Y indicates a rated speed of 6000 rpm
  • Code U indicates a rated speed of 7000 rpm
  • Code V indicates a rated speed of 8000 rpm

Power Output

Like torque, motors in MP Low inertia series have higher power density as well. Rated output (in kW) at respective rated speed can go up to 18.6kW (e.g., motor catalog number MPL-B980D) starting from a small figure of 0.16kW (e.g., motor catalog number MPL-A1510V).

Environmental Specifications

Rockwell Automation has made low inertia servo motors of the MPL series compatible with IP50 or IP66 depending upon the absence or presence of a shaft seal. If there is no shaft seal then the motor follows the IP50 standard minimum (typically IP50 if the shaft is mounted in an upward direction, IP51 if the shaft is installed in a horizontal direction, and IP53 if the shaft is installed in a downward direction). If there is a shaft seal (optional) then the IP66 standard is mandatory (so concerned equipment becomes dust and drip-free). Furthermore, the manufacturer binds its users to use those cable connectors which are environmentally sealed.

As far as the operating temperature is concerned, these servo motors are recommended to be used in the locality where the temperature ranges between 0 and 40 degrees centigrade. Anyhow, storage temperature can range between -30 and 70 degrees centigrade. If the temperature doesn’t remain within prescribed limits, then the owner must make arrangements for enough clearance, airflow, and heatsink.

While storing it must be ensured that the atmosphere is noncorrosive. Relative humidity at the storage site could be anywhere between 5 and 95% noncondensing.

Thermal Management

MPL series servo motors are designed to be smaller in size which complicates the heat management system. But advanced winding techniques, winding insulation, and winding material make this motor thermally efficient. Moreover, the presence of magnets instead of another winding also makes these motors more efficient thermally. During the designing process, heat transfer is also paid heed to. Anyhow, the manufacturer suggests not enclosing the motor except in situations when a forced-air mechanism is used to cool down the motor. It is also suggested that no such devices are placed near motors that produce heat. Aluminum heatsinks can also be used to dissipate heat more efficiently.

Certifications

MP Low inertia servo motors are components that are UL Recognized to corresponding CSA and UL standards. These servo motors are also CE marked for all applicable directives.

Other Products of the MP Series

Low inertia motors are regarded as one product of the MP series, as there are two more products of the MP series as well. These are MP series food-grade motors and stainless-steel motors. These two types of products are designed to meet some extra application requirements.

MP series food grade motors mainly possess characteristics of MP Low inertia motors but they also meet additional requirements of food and beverage related applications e.g. packaging. These motors are designed to have better sealing and food-grade coatings so they could be used near food items. Similarly, MP series stainless steel motors are designed to work in hygienic environments. These motors can be used safely in dairy and poultry-related applications where there could be a corrosive atmosphere or high pressure. These motors are ensured to be leakproof and they are factory sealed to achieve this purpose.

Browse our selection of MPL Servo Motors units

AutomationStop.com's online catalog offers one of the largest selections of preowned MPL Servo Motors units in the world.

MPL-B1520U-VJ74AA

Product number MPL-B1520U-VJ74AA is an Allen Bradley AC servo motor belonging to the MP series of products. This device has a 2.0-inch magnetic stack length, in addition to a 63-millimeter frame. The speed of this motor is rated at 7000 revolutions per minute (rpm). This servo motor integrates a multi-turn high-resolution encoder into its design for feedback purposes.

MPL-B1530F-V-X217

The MPL-B1530F-V-X217 is a servo motor. This product was manufactured by Allen Bradley/Rockwell Automation. Additionally, this unit belongs to the MPL product line. It has a high-resolution multi-turn encoder that is primarily used for absolute feedback. The voltage rating of the MPL-B1530F-V-X217 is 400 volts AC. The motor's speed is rated at 3000 RPM.

MPL-B1530U-EJ74AA

The MPL-B1530U-EJ74AA is a low inertia permanent magnet servo motor manufactured by Allen Bradley/Rockwell Automation. This servo unit has a max speed of 7000 RPM. This servo motor comes with a shaft key and a brake built-in. It has a 165-millimeter frame, as well as a 3-inch magnet stack. In addition, this servo motor has absolute (high-resolution) encoder feedback in a single turn.

MPL-B1530U-HJ72AA

Allen Bradley's MPL-B1530U-HJ72AA is an AC low-inertia servo motor. It is a 7000 rpm brushless servo motor that comes with circular DIN cable connectors. This servo motor has a 165 mm frame size. It has a shaft key but no built-in shaft seal. This device is compact and can deliver stable performance.

MPL-B1530U-VJ74AA

The MPL-B1530U-VJ74AA low-inertia servo motor is a product of Allen Bradley. It belongs to the MP series of products. The voltage rating of this servo motor is 400 volts. This servo motor has a 63-millimeter-sized frame, in addition to a 3.0-inch-long magnetic stack. The speed that the MPL-B1530U-VJ74AA operates at is rated as 7000 revolutions per minute. For feedback purposes, this servo motor features a multi-turn encoder. This device even features a 24-volt DC brake.

MPL-B210V-EJ72AA

Allen Bradley's MPL-B210V-EJ72AA is a low inertia servo motor with an 8000 RPM speed rating. This servo motor has circular DIN connectors that are orientated at a right angle and are 180-degree rotatable. Furthermore, the MPL-B210V-EJ72AA has a 400-volt rating. This unit has a 75 mm frame and a 1 in. magnet stack length.

MPL-B220T-EJ72AA

Designed by Allen-Bradley, part number MPL-B220T-EJ72AA is an MP-series low-inertia servo motor with a 400V rating. This device operates at speeds of up to 6000 rev/min. The MPL-B220T-EJ72AA has a 75-millimeter frame, in addition to a two-inch-long magnetic stack. This servo motor includes a single-turn encoder for feedback and circular DIN connectors. This unit does not, however, include a brake. The MPL-B220T-EJ72AA can be mounted via the flange mounting method.

MPL-B220T-VJ74AA

Product number MPL-B220T-VJ74AA is a 400-volt servo motor with low inertia. This motor operates at a speed rated at 6000 rev/min. It has a 75-millimeter frame, in addition to a 2.0-inch-long magnetic stack. A multi-turn encoder with high resolution is utilized for feedback purposes. The MPL-B220T-VJ74AA includes an integrated brake rated at 24 volts DC. This motor can be mounted via the use of a flange mount.

MPL-B230P-HJ74AA

Manufactured by Allen Bradley / Rockwell Automation, product number MPL-B230P-HJ74AA is a low inertia servo motor with a voltage rating of 400V. The rated speed of this device is 5000 rev/min. The magnetic stack length of this servo motor measures 3.0 inches, and the frame measures 75 millimeters. For feedback purposes, the MPL-B230P-HJ74AA is equipped with a 2000-line encoder. This device also has a shaft key, a 24 VDC brake, and an IEC metric mounting flange.

MPL-B320P-SK72AA

The Allen Bradley MPL-B320P-SK72AA servo motor has a 1.5 kW power output, a 460VAC nominal voltage rating, and a maximum rotor speed of 5000 RPM. It has an enhanced thermal management system that improves motor performance and rare-earth magnets that ensure a faster acceleration. This motor features a high-resolution encoder that gives absolute position feedback in a single turn.

MPL-B320P-SK74AA

The Allen-Bradley MP-B320P-SK74AA is a 5000 RPM servo motor from the MP series of products. Its windings are designed to accept an input voltage rated at 400 volts AC. It has a 1.5-kilowatt output power rating. The inertia of the rotor is 0.000078 kg-m2. The MP-B320P-SK74AA features circular DIN connectors.

MPL-B330F-M-X223

Product number MPL-B330F-M-X223 is a 3000 rpm AC servo motor from Allen Bradley/Rockwell Automation. This motor features a multi-turn high-resolution encoder for feedback. This motor has circular bayonet connectors that are positioned facing the motor's shaft. The MPL-B330F-M-X223 has a 100-millimeter frame, as well as a 400-volt AC input voltage rating.

MPL-B330P-HJ72AA

Catalog number MPL-B330P-HJ72AA is an MP-series AC servo motor manufactured by Allen Bradley. This motor has a 5000 rev/min rated speed and a 100-millimeter frame. The MPL-B330P-HJ72AA has circular DIN connectors, as well as a 2000 line encoder for feedback. This servo motor can be mounted via the use of an IEC metric mounting flange.

MPL-B330P-HK72AA

The MPL-B330P-HK72AA AC servo motor is part of Allen Bradley's MP product line of low-inertia rotary motors that use premium permanent magnets. This unit has a 400-volt rating and operates at speeds rated at 5000 rev/min. The frame of the MPL-B330P-HK72AA measures 100 millimeters, and its magnetic stack has a length that measures three (3.0) inches. This product includes a 2000-line encoder for feedback.

MPL-B4560F-MK72AA

The Allen Bradley MPL-B4560F-MK72AA is a brushless AC servo motor with low inertia. It has a 400-volt AC rating. It comes with a 130 mm frame. Its magnetic stack length is six (6.0) inches long. The MPL-B4560F-MK72AA operates at 3000 revolutions per minute, however, it is not equipped with a brake. For feedback purposes, this servo motor features a multi-turn high-resolution encoder. The MPL-B4560F-MK72AA may be mounted via flange mounting.

MPL-B4560F-SK72AA

Product number MPL-B4560F-SK72AA is an MP-series servo motor with low inertia and a 400 VAC rating. This motor has a magnet stack length of six (6.0) inches, as well as a rated speed of three thousand (3000) revolutions per minute. The MPL-B4560F-SK72AA servo motor features an encoder with high resolution that can provide feedback in only one turn.

MPL-B680D-MJ72AA

Part number MPL-B680D-MJ72AA is an Allen Bradley servo motor belonging to the MPL servo motor series. This unit is powered via a 400 VAC voltage rating. The MPL-B680D-MJ72AA has a speed rating of 2000 revolutions per minute (rev/min). This device has circular DIN connectors and a multi-turn encoder. The MPL-B680D-MJ72AA can be used in motion control-related applications.

MPL-B680F-MJ74AA

Part number MPL-B680F-MJ74AA is a low-inertia servo motor that was manufactured by Allen Bradley/Rockwell Automation. This servo motor's frame measures 215 millimeters and the magnetic shaft measures 8.0 inches long. This product operates at speeds of up to 3000 revolutions per minute. For feedback purposes, the MPL-B680F-MJ74AA includes a multi-turn encoder.

MPL-B680F-SJ72AA

Part number MPL-B680F-SJ72AA is a servo motor from Allen Bradley's MP series of servo motors. This unit has a 400-volt rating and low inertia. The frame of this device measures 215 millimeters, and the magnetic stack length is eight (8.0) inches. The rated speed of the MPL-B680F-SJ72AA is 3000 revolutions per minute. This unit has a single-turn encoder for feedback. It can be mounted via the use of a mounting flange.

MPL-B860D-SJ72AA

The MPL-B860D-SJ72AA is an Allen Bradley servo motor. It is a low inertia unit with a 400 volts AC voltage rating. This product also has circular DIN connectors. This servo motor includes a high-resolution encoder for feedback in a single turn. The MPL-B860D-SJ72AA has a 265 mm frame, as well as a 6.0 in. magnetic stack length. The rated speed of this motor is 2000 rev/min.

MPL-B980D-MJ72AA

Part number MPL-B980D-MJ72AA is a low-inertia servo motor with a 400-volt voltage rating. This servo motor has a frame size measuring 300 millimeters. Additionally, the magnetic stack length of the MPL-B980D-MJ72AA measures eight (8.0) inches. This unit operates at speeds rated up to 2000 rev/min. For feedback purposes, this motor contains a multi-turn encoder. The connectors of this device are classified as circular DIN connectors. It can be mounted via a mounting flange.

MPL-B980E-MJ72AA

Product number MPL-B980E-MJ72AA is a low-inertia servo motor with a 400-volt AC rating. This servo motor operates at a rated speed of 2500 revolutions per minute. The MPL-B980E-MJ72AA is provided feedback via a multi-turn high-resolution encoder. The connectors of this device are circular bayonet connectors. This motor does not have a brake. A mounting flange can be used to mount this servo motor.

MPL-B980E-MJ74AA

Product number MPL-B980E-MJ74AA is a 400-volt brushless servo motor with low inertia. This unit was designed by Allen-Bradley, and it is part of the MP line of motors. The MPL-B980E-MJ74AA has a 300-millimeter frame. In addition, the magnetic stack length of this servo motor is 8.0 inches. The Allen-Bradley MPL-B980E-MJ74AA operates at speeds rated up to 2500 rev/min. For feedback purposes, this product features a multi-turn encoder. It also features a brake rated at 24 volts DC.
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