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Allen-Bradley MPL-B1530U-EJ72AA Servo Motor

1. Product Overview

The Allen-Bradley MPL-B1530U-EJ72AA is a low-inertia permanent-magnet AC servo motor from the MP-Series MPL family. It is designed for high-speed, precision motion applications where accurate control of speed, position, acceleration, and deceleration is required.

This particular model uses a 460 V AC class, a 63 mm frame size, a 76.2 mm magnetic stack, and a maximum/rated speed of 7000 rpm. It is equipped with a single-turn high-resolution absolute encoder, a keyed shaft, a right-angle SpeedTEC DIN connector, and no holding brake.

The motor is part of the low-inertia MPL servo family, making it suitable for machines that require quick acceleration and deceleration, frequent indexing, precise positioning, and rapid response to motion commands.

Its basic motor performance is approximately 0.90 Nm continuous stall torque, 2.80 Nm peak stall torque, and 0.39 kW rated output. The rotor inertia is approximately 0.000023 kg·m², while the standard motor weight is approximately 1.6 kg.

2. Brand

Brand: Allen-Bradley

Allen-Bradley is the product brand under which this MPL servo motor is identified.

The MPL-B1530U-EJ72AA is specifically cataloged as an MP-Series MPL 480 V AC rotary servo motor and is currently identified as an active product configuration.

3. Product Series

Series: MP-Series MPL

Series type: Low-Inertia Brushless Servo Motors

Motor type: Permanent-Magnet AC Rotary Servo Motor

Voltage class: 460 V AC / 400 V class

Frame: 15 / 63 mm

Stack length: 30 / 76.2 mm

The MPL series is designed around low-inertia servo motor construction. The relatively low rotor inertia allows the motor to respond quickly to changes in commanded speed and position.

The MPL-B1530U-EJ72AA is the single-turn encoder version of the B1530U motor configuration. The closely related VJ72AA version uses multi-turn absolute feedback instead.

4. Detailed Technical Parameters

Parameter	Specification
Model	MPL-B1530U-EJ72AA
Brand	Allen-Bradley
Product series	MP-Series MPL
Product type	Low-inertia brushless rotary servo motor
Motor technology	Permanent-magnet AC servo
Voltage class	460 V AC / 400 V class
Rated speed	7000 rpm
Maximum speed	7000 rpm
Frame size	15 / 63 mm
Magnetic stack length	30 / 76.2 mm
Continuous stall torque	0.90 Nm
Peak stall torque	2.80 Nm
Rated output	0.39 kW
Rotor inertia	0.000023 kg·m²
Feedback	Single-turn high-resolution absolute encoder
Feedback resolution	128 sin/cos cycles/rev
Feedback protocol	Hiperface
Shaft	Keyed shaft extension
Shaft seal	No shaft seal
Connector	SpeedTEC DIN
Connector orientation	Right-angle, 180° rotatable
Brake	No brake
Mounting	IEC metric flange mounting
Mounting holes	Free mounting holes, Type FF
Dimensions – frame	63 mm
Dimensions – stack	76.2 mm
Key mechanical dimension AD	Approx. 116.3 mm
Key mechanical dimension HD	Approx. 77.2 mm
Overall mechanical length L	Approx. 171.2 mm
Mounting length LB	Approx. 151.5 mm
Flange/frame dimension M	63 mm
Approx. motor weight	1.6 kg
Environmental sealing	Standard configuration without shaft seal
Intended application	Precision industrial servo motion

The main electrical and performance values for the B1530U motor family are 7000 rpm, 0.90 Nm continuous stall torque, 2.80 Nm peak stall torque, 0.39 kW rated output, and approximately 1.6 kg motor weight.

The exact model configuration specifies the 460 V class, 63 mm frame, 76.2 mm stack, single-turn high-resolution encoder, keyed shaft, SpeedTEC DIN connector, and no brake.

5. Main Model Configuration

The complete catalog number is:

MPL-B1530U-EJ72AA

Each section of the catalog number identifies an important motor characteristic.

Model Code	Meaning
MPL	MPL low-inertia servo motor family
B	460 V class
15	Frame size 15, approximately 63 mm
30	Magnetic stack length 30, approximately 76.2 mm
U	7000 rpm motor configuration
E	Single-turn high-resolution encoder
J	Keyed shaft extension
7	SpeedTEC DIN right-angle connector, 180° rotatable
2	No brake
AA	Standard catalog configuration

The manufacturer’s model configuration identifies the E option as a single-turn high-resolution encoder, the J option as a keyed shaft, the 7 option as the rotatable SpeedTEC DIN connector, and the 2 option as no brake.

6. Product Introduction

The MPL-B1530U-EJ72AA is intended for applications in which a conventional motor is not sufficient and the machine requires controlled servo movement.

A servo motor works together with a servo drive and motion controller. Instead of simply running at a fixed speed, the motor can respond continuously to commands for speed, position, torque, acceleration, and deceleration.

This makes the motor particularly useful in automated machinery where the same movement needs to be repeated accurately over thousands or millions of cycles.

The low-inertia construction is one of the most important characteristics of this motor.

When the motor has relatively low rotor inertia, the servo drive can accelerate the rotor rapidly and change its speed with less mechanical resistance. This is particularly useful for indexing, pick-and-place, high-speed positioning, electronic gearing, and other dynamic motion applications.

7. 7000 RPM High-Speed Operation

The MPL-B1530U-EJ72AA is rated for 7000 rpm, with the published maximum speed also listed as 7000 rpm.

A 7000 rpm servo motor is suitable for machinery requiring rapid rotary motion.

High-speed servo motors are commonly used where the machine needs:

• Fast indexing
• Rapid acceleration
• Short cycle times
• High-frequency positioning
• Fast reciprocating movement
• High-speed material handling
• Compact mechanical transmissions

The motor should always be operated within the limits established by the servo drive, motor parameters, load inertia, mechanical transmission, and machine design.

8. Single-Turn High-Resolution Encoder

The MPL-B1530U-EJ72AA uses a single-turn high-resolution absolute encoder. The published specification identifies a 128 sin/cos cycles-per-revolution feedback resolution and Hiperface protocol.

The single-turn encoder provides the servo system with detailed information about the motor’s angular position within one revolution.

This information allows the servo drive to regulate motor movement accurately.

For many industrial machines, single-turn absolute feedback is suitable when the application does not require the motor to retain an absolute multi-turn position across multiple revolutions.

The corresponding multi-turn version in the same motor family uses a V feedback designation, making the difference between E and V an important consideration when selecting a replacement motor.

9. Low-Inertia Design

The B1530U motor has a rotor inertia of approximately 0.000023 kg·m².

Low rotor inertia is particularly useful in applications that frequently change speed.

For example, a machine may repeatedly:

1. Accelerate the motor.
2. Reach the required operating speed.
3. Decelerate rapidly.
4. Stop at a defined position.
5. Reverse direction.
6. Repeat the cycle.

A low-inertia servo motor can be advantageous in this type of motion profile because the motor rotor itself presents less inertia to the servo control system.

This characteristic is especially valuable in high-speed indexing and positioning machinery.

10. Continuous and Peak Torque

The motor’s published performance includes approximately:

• 0.90 Nm continuous stall torque
• 2.80 Nm peak stall torque
• 0.39 kW rated output

These values belong to the B1530U motor configuration.

Continuous stall torque represents the motor’s continuous torque capability under the specified stall condition.

Peak torque represents the higher short-duration torque capability that can be available during acceleration or other dynamic conditions, subject to the complete servo system’s limits.

Peak torque should not be treated as a continuous operating torque.

Correct servo sizing should consider load torque, reflected inertia, acceleration time, duty cycle, speed, mechanical efficiency, and the complete motion profile.

11. Keyed Shaft Design

The motor uses a keyed shaft extension.

A keyed shaft provides a mechanical means of transmitting torque between the motor shaft and a compatible coupling, pulley, gearbox, or other mechanical component.

For replacement applications, the shaft key, coupling dimensions, shaft diameter, insertion depth, and mounting flange should be checked before installation.

The keyed shaft configuration is explicitly included in the EJ72AA model definition.

12. SpeedTEC DIN Connector

The motor uses a SpeedTEC DIN connector in a right-angle configuration.

The connector can be rotated through 180°, providing flexibility when routing motor cables.

This can be useful in compact machine designs where cable routing space is limited.

A rotatable connector can help avoid unnecessary cable bends and can simplify the physical arrangement between the motor, cable tray, and machine frame.

The connector arrangement is part of the standard EJ72AA configuration.

13. No-Brake Configuration

The MPL-B1530U-EJ72AA is a no-brake motor.

This means the motor does not include the optional 24 V DC holding brake.

The no-brake design is appropriate for applications where the machine does not require the motor to mechanically hold the load when the motor is unpowered.

This can be advantageous in horizontal motion applications or machines where a separate mechanical holding mechanism is already available.

For vertical axes or loads that can move due to gravity, the absence of a brake must be considered carefully.

A no-brake motor should not automatically be substituted for a brake-equipped motor.

14. Mechanical Dimensions

The B1530U mechanical dimensions are based on the 63 mm frame and 76.2 mm stack configuration.

Key dimensions from the mechanical drawing include approximately 116.3 mm AD, 77.2 mm HD, 171.2 mm overall L, and 151.5 mm LB for the standard motor configuration.

Dimension	Approximate Value
Model	MPL-B1530U-EJ72AA
Frame size M	63.0 mm
Stack length	76.2 mm
AD	116.3 mm
HD	77.2 mm
LA	9.0 mm
LD	91.3 mm
LE	52.4 mm
Overall L	171.2 mm
LB	151.5 mm
L-LB	19.7 mm
Shaft diameter D	9.0 mm
S	5.8 mm
N	40.0 mm
P	55.0 mm
G	7.2 mm
F	3.0 mm
Shaft key	3 × 3 × 14 mm
Weight	Approx. 1.6 kg

The exact installation envelope should always be checked against the mechanical drawing for the particular connector and mounting configuration.

15. Product Weight

The published B1530U motor performance data gives an approximate standard motor weight of 1.6 kg.

A separate product listing gives a shipping/item weight of approximately 4.19 lb, which converts to approximately 1.90 kg. This difference illustrates why shipping weight and engineering motor weight should not be treated as identical.

For engineering comparison, the 1.6 kg motor weight is the more useful figure for the B1530U motor family.

16. Applications

The MPL-B1530U-EJ72AA can be used in a wide range of automated machinery.

Its combination of 7000 rpm speed, low rotor inertia, high-resolution single-turn feedback, and 0.39 kW output makes it suitable for precision motion applications.

Typical application areas include:

Packaging Machinery

The motor can be used in packaging equipment where rapid positioning and repeatable movement are required.

Typical applications include:

• Product indexing
• Cutting mechanisms
• Sealing mechanisms
• Labeling systems
• Packaging conveyors
• Film handling
• Product positioning

Assembly Equipment

The motor is suitable for automated assembly systems requiring repeatable positioning.

Possible applications include:

• Component insertion
• Automated fixtures
• Small pressing mechanisms
• Pick-and-place axes
• Part positioning
• Tool positioning

Material Handling

Servo motors are widely used where products or machine components must be moved to specific positions.

Applications include:

• Transfer mechanisms
• Indexing systems
• Conveyor positioning
• Feed mechanisms
• Automated stops
• Linear transfer systems

Printing Machinery

High-speed servo motion can be useful in printing and converting machinery.

Possible applications include:

• Registration control
• Roller positioning
• Material indexing
• Cutting
• Web handling

Electronics Manufacturing

The motor can also be used in automated electronics production equipment.

Potential applications include:

• Component positioning
• Inspection mechanisms
• Automated assembly
• Transfer equipment
• Precision indexing

Machine Automation

The motor is suitable for general industrial machine axes requiring controlled servo motion.

This includes:

• Rotary indexing
• Positioning axes
• Feed mechanisms
• Automated tooling
• Inspection equipment
• Production machinery

17. Application Characteristics

Application	Typical Motion Requirement	Suitability
Packaging	High-speed indexing and positioning	Very suitable
Assembly	Repetitive positioning	Very suitable
Material handling	Controlled acceleration and positioning	Suitable
Printing	High-speed synchronized movement	Suitable
Inspection	Accurate positioning	Suitable
Electronics manufacturing	Repeatable precision motion	Suitable
Rotary indexing	Fast start/stop cycles	Very suitable
Heavy vertical axis	Load holding during power loss	Requires brake/holding analysis
High-inertia machine	Large load acceleration	Requires complete servo sizing
Continuous fixed-speed drive	Constant-speed operation	Servo capability may be unnecessary

18. Main Product Advantages

18.1 High-Speed 7000 RPM Operation

The 7000 rpm rating provides a strong fit for high-speed servo applications.

It allows machine designers to achieve rapid rotary movement without necessarily requiring an additional high-speed mechanical transmission.

18.2 Low-Inertia Rotor

The low rotor inertia helps the motor respond quickly to changes in the commanded motion profile.

This is particularly useful for machines that frequently accelerate, decelerate, stop, and reverse.

18.3 High-Resolution Single-Turn Feedback

The single-turn high-resolution encoder provides detailed position feedback for closed-loop servo control.

This supports accurate positioning and repeatable operation.

18.4 0.39 kW Output

The 0.39 kW rated output provides a useful middle range within the smaller MPL servo motor family.

It is suitable for many compact automation axes while remaining significantly smaller than higher-power MPL motors.

18.5 Compact 63 mm Frame

The 63 mm frame provides a compact motor package for machinery where installation space is limited.

This can be particularly useful in multi-axis machines where several servo motors must fit into a relatively small mechanical area.

18.6 Keyed Shaft

The keyed shaft provides a conventional mechanical torque-transfer interface.

It is useful when connecting the motor to compatible couplings, gearboxes, pulleys, or other mechanical components.

18.7 Rotatable Right-Angle Connector

The 180° rotatable connector provides additional flexibility during machine installation.

This can make cable routing easier and reduce interference with nearby mechanical components.

18.8 No-Brake Construction

Where a holding brake is not required, the no-brake configuration provides a straightforward motor arrangement.

It is particularly useful for applications where the load does not require mechanical holding when power is removed.

19. Electrical and Motion-System Characteristics

Parameter	Value
Model	MPL-B1530U-EJ72AA
Voltage class	460 V AC
Motor rated speed	7000 rpm
Maximum speed	7000 rpm
Continuous stall torque	0.90 Nm
Peak stall torque	2.80 Nm
Rated output	0.39 kW
Rotor inertia	0.000023 kg·m²
Feedback	Single-turn absolute
Feedback resolution	128 sin/cos cycles/rev
Feedback protocol	Hiperface
Brake	None
Shaft	Keyed
Frame	63 mm
Stack	76.2 mm
Dimensions	Approx. 116.3 × 77.2 × 171.2 mm using key drawing dimensions
Weight	Approx. 1.6 kg

The published B1530U performance table lists the 0.90 Nm continuous torque, 2.80 Nm peak torque, 0.39 kW output, and 1.6 kg motor weight.

20. Five Related Models in the Same Series

The following five models are closely related to the MPL-B1530U-EJ72AA and are useful when comparing encoder type, brake configuration, motor size, and performance.

Model	Voltage	Frame	Stack	Speed	Feedback	Brake	Dimensions	Weight
MPL-B1530U-EJ74AA	460 V	63 mm	76.2 mm	7000 rpm	Single-turn absolute	24 V DC	Approx. 116.3 × 77.2 × 207.3 mm	Approx. 1.8 kg
MPL-B1530U-VJ72AA	460 V	63 mm	76.2 mm	7000 rpm	Multi-turn absolute	None	Approx. 116.3 × 77.2 × 171.2 mm	Approx. 1.6 kg
MPL-B1530U-VJ74AA	460 V	63 mm	76.2 mm	7000 rpm	Multi-turn absolute	24 V DC	Approx. 116.3 × 77.2 × 207.3 mm	Approx. 1.8 kg
MPL-B1520U-EJ72AA	460 V	63 mm	50.8 mm	7000 rpm	Single-turn absolute	None	Approx. 66.5 × 94.0 × 146.2 mm	Approx. 1.2 kg
MPL-B230P-EJ72AA	460 V	75 mm	76.2 mm	5000 rpm	Single-turn absolute	None	Approx. 129.6 × 89.4 × 188.3 mm	Approx. 2.6 kg

The B1530U family has the same basic 63 mm frame and 76.2 mm stack across the E/V feedback and brake/no-brake variants. The principal differences are feedback configuration and brake option.

21. MPL-B1530U-EJ72AA vs MPL-B1530U-EJ74AA

These two motors are very closely related.

The primary difference is the brake.

Parameter	MPL-B1530U-EJ72AA	MPL-B1530U-EJ74AA
Voltage	460 V	460 V
Frame	63 mm	63 mm
Stack	76.2 mm	76.2 mm
Speed	7000 rpm	7000 rpm
Feedback	Single-turn absolute	Single-turn absolute
Shaft	Keyed	Keyed
Connector	SpeedTEC DIN	SpeedTEC DIN
Brake	None	24 V DC
Overall dimensions	Approx. 116.3 × 77.2 × 171.2 mm	Approx. 116.3 × 77.2 × 207.3 mm
Weight	Approx. 1.6 kg	Approx. 1.8 kg

For a machine that requires mechanical holding during power-off conditions, the brake-equipped configuration should be evaluated rather than simply replacing a brake motor with the non-brake EJ72AA.

22. MPL-B1530U-EJ72AA vs MPL-B1530U-VJ72AA

The E and V configurations have the same basic motor size but use different feedback arrangements.

Parameter	MPL-B1530U-EJ72AA	MPL-B1530U-VJ72AA
Voltage	460 V	460 V
Frame	63 mm	63 mm
Stack	76.2 mm	76.2 mm
Speed	7000 rpm	7000 rpm
Feedback	Single-turn absolute	Multi-turn absolute
Shaft	Keyed	Keyed
Brake	None	None
Connector	SpeedTEC DIN	SpeedTEC DIN
Dimensions	Approx. 116.3 × 77.2 × 171.2 mm	Approx. 116.3 × 77.2 × 171.2 mm
Weight	Approx. 1.6 kg	Approx. 1.6 kg

The key selection issue is the feedback requirement.

The E configuration is the single-turn version, while the V configuration is the multi-turn version.

23. MPL-B1530U-EJ72AA vs MPL-B1520U-EJ72AA

These two models are both 7000 rpm, single-turn, no-brake configurations.

The major difference is the magnetic stack length.

Parameter	MPL-B1530U-EJ72AA	MPL-B1520U-EJ72AA
Voltage	460 V	460 V
Frame	63 mm	63 mm
Stack	76.2 mm	50.8 mm
Speed	7000 rpm	7000 rpm
Continuous torque	0.90 Nm	0.49 Nm
Peak torque	2.80 Nm	1.58 Nm
Rated output	0.39 kW	0.27 kW
Feedback	Single-turn absolute	Single-turn absolute
Brake	None	None
Dimensions	Approx. 116.3 × 77.2 × 171.2 mm	Approx. 66.5 × 94.0 × 146.2 mm
Weight	Approx. 1.6 kg	Approx. 1.2 kg

The longer B1530U stack provides a higher torque and power rating than the B1520U configuration.

24. Five Same-Brand Popular or Common Models

The following models represent useful comparison points from the broader MP-Series/MPL servo motor family.

They are not presented as a ranking. They cover different motor sizes, speed ranges, torque levels, feedback configurations, and applications.

Model	Voltage	Frame	Stack	Speed	Continuous Torque	Peak Torque	Feedback	Brake	Dimensions	Weight
MPL-B210V-EJ72AA	460 V	75 mm	25.4 mm	8000 rpm	0.55 Nm	1.50 Nm	Single-turn absolute	None	Approx. 78.6 × 38.4 × 137.3 mm	1.4 kg
MPL-B220T-EJ72AA	460 V	75 mm	50.8 mm	6000 rpm	1.61 Nm	4.74 Nm	Single-turn absolute	None	Approx. 76.2 × 111.2 × 162.8 mm	2.0 kg
MPL-B230P-EJ72AA	460 V	75 mm	76.2 mm	5000 rpm	2.10 Nm	8.20 Nm	Single-turn absolute	None	Approx. 129.6 × 89.4 × 188.3 mm	2.6 kg
MPL-B320P-MJ72AA	460 V	100 mm	50.8 mm	5000 rpm	3.05 Nm	7.91 Nm	Multi-turn absolute	None	100 mm frame; full envelope configuration-dependent	3.7 kg
MPL-B330P-MJ72AA	460 V	100 mm	76.2 mm	5000 rpm	4.18 Nm	11.1 Nm	Multi-turn absolute	None	100 mm frame; full envelope configuration-dependent	4.6 kg

The published MPL performance data identifies the B210V, B220T, B230P, B320P, and B330P as progressively larger motor configurations with different speed, torque, output, inertia, and weight characteristics.

25. MPL-B210V-EJ72AA

The MPL-B210V-EJ72AA is a 75 mm-frame MPL servo motor with a relatively short 25.4 mm magnetic stack.

It is designed for higher-speed operation, with a rated speed of approximately 8000 rpm.

Parameter	Specification
Model	MPL-B210V-EJ72AA
Voltage	460 V
Frame	75 mm
Stack	25.4 mm
Rated speed	8000 rpm
Continuous stall torque	0.55 Nm
Peak stall torque	1.50 Nm
Rated output	0.37 kW
Feedback	Single-turn absolute
Shaft	Keyed
Brake	None
Dimensions	Approx. 78.6 × 38.4 × 137.3 mm
Weight	Approx. 1.4 kg

The B210V is a useful choice for comparison when an application requires high speed while remaining within a compact motor configuration.

26. MPL-B220T-EJ72AA

The MPL-B220T-EJ72AA uses a 75 mm frame and 50.8 mm stack.

It operates at approximately 6000 rpm and provides substantially more torque than the smaller B210V.

Parameter	Specification
Model	MPL-B220T-EJ72AA
Voltage	460 V
Frame	75 mm
Stack	50.8 mm
Rated speed	6000 rpm
Continuous stall torque	1.61 Nm
Peak stall torque	4.74 Nm
Rated output	0.62 kW
Feedback	Single-turn absolute
Shaft	Keyed
Brake	None
Dimensions	Approx. 76.2 × 111.2 × 162.8 mm
Weight	Approx. 2.0 kg

This model provides a useful step up in torque capability while remaining within the smaller MPL motor family.

27. MPL-B230P-EJ72AA

The MPL-B230P-EJ72AA is a larger 75 mm-frame servo motor with a 76.2 mm stack.

Its rated speed is approximately 5000 rpm, while continuous and peak stall torque are approximately 2.10 Nm and 8.20 Nm respectively.

Parameter	Specification
Model	MPL-B230P-EJ72AA
Voltage	460 V
Frame	75 mm
Stack	76.2 mm
Rated speed	5000 rpm
Continuous stall torque	2.10 Nm
Peak stall torque	8.20 Nm
Rated output	0.86 kW
Feedback	Single-turn absolute
Shaft	Keyed
Brake	None
Dimensions	Approx. 129.6 × 89.4 × 188.3 mm
Weight	Approx. 2.6 kg

This model is suitable as a reference when the application requires more torque than the B1530U configuration can provide.

28. MPL-B320P-MJ72AA

The MPL-B320P-MJ72AA moves into the larger 100 mm-frame class.

It provides approximately 3.05 Nm continuous stall torque, 7.91 Nm peak torque, and 1.5 kW rated output.

Parameter	Specification
Model	MPL-B320P-MJ72AA
Voltage	460 V
Frame	100 mm class
Stack	50.8 mm
Rated speed	5000 rpm
Continuous stall torque	3.05 Nm
Peak stall torque	7.91 Nm
Rated output	1.5 kW
Feedback	Multi-turn absolute
Shaft	Keyed configuration
Brake	None
Dimensions	100 mm frame class; complete envelope configuration-dependent
Weight	Approx. 3.7 kg

The B320P is substantially more powerful than the B1530U and is therefore suited to larger machine axes.

29. MPL-B330P-MJ72AA

The MPL-B330P-MJ72AA is another larger MPL configuration.

It provides approximately 4.18 Nm continuous stall torque, 11.1 Nm peak torque, and 1.8 kW rated output.

Parameter	Specification
Model	MPL-B330P-MJ72AA
Voltage	460 V
Frame	100 mm class
Stack	76.2 mm
Rated speed	5000 rpm
Continuous stall torque	4.18 Nm
Peak stall torque	11.1 Nm
Rated output	1.8 kW
Feedback	Multi-turn absolute
Shaft	Keyed configuration
Brake	None
Dimensions	100 mm frame class; complete envelope configuration-dependent
Weight	Approx. 4.6 kg

The B330P is appropriate for substantially higher-load servo applications than the compact B1530U motor.

30. Comparison of the Main Related Motors

Model	Frame	Stack	Speed	Continuous Torque	Peak Torque	Output	Feedback	Brake	Dimensions	Weight
MPL-B1520U-EJ72AA	63 mm	50.8 mm	7000 rpm	0.49 Nm	1.58 Nm	0.27 kW	Single-turn	No	Approx. 66.5 × 94.0 × 146.2 mm	1.2 kg
MPL-B1530U-EJ72AA	63 mm	76.2 mm	7000 rpm	0.90 Nm	2.80 Nm	0.39 kW	Single-turn	No	Approx. 116.3 × 77.2 × 171.2 mm	1.6 kg
MPL-B210V-EJ72AA	75 mm	25.4 mm	8000 rpm	0.55 Nm	1.50 Nm	0.37 kW	Single-turn	No	Approx. 78.6 × 38.4 × 137.3 mm	1.4 kg
MPL-B220T-EJ72AA	75 mm	50.8 mm	6000 rpm	1.61 Nm	4.74 Nm	0.62 kW	Single-turn	No	Approx. 76.2 × 111.2 × 162.8 mm	2.0 kg
MPL-B230P-EJ72AA	75 mm	76.2 mm	5000 rpm	2.10 Nm	8.20 Nm	0.86 kW	Single-turn	No	Approx. 129.6 × 89.4 × 188.3 mm	2.6 kg
MPL-B320P-MJ72AA	100 mm	50.8 mm	5000 rpm	3.05 Nm	7.91 Nm	1.5 kW	Multi-turn	No	100 mm frame class	3.7 kg
MPL-B330P-MJ72AA	100 mm	76.2 mm	5000 rpm	4.18 Nm	11.1 Nm	1.8 kW	Multi-turn	No	100 mm frame class	4.6 kg

The progression shows how the MPL family moves from compact, high-speed motors toward larger, higher-torque motors.

31. Selection Advantages of the MPL-B1530U-EJ72AA

When compared with the smaller B1520U, the B1530U offers a longer magnetic stack and higher torque/output capability while maintaining the same 7000 rpm speed class.

Compared with the larger B210V, the B1530U has a smaller 63 mm frame and provides a different balance between motor size, stack length, torque, and speed.

Compared with the B220T and B230P, the B1530U is a smaller and lighter motor with a higher 7000 rpm speed rating.

This makes the B1530U particularly useful for machines that need a combination of:

• High speed
• Moderate torque
• Compact motor dimensions
• Low rotor inertia
• Precise feedback
• Repeated positioning
• Rapid acceleration and deceleration

32. Maintenance Advantages

The MPL-B1530U-EJ72AA is relatively straightforward to identify because the complete catalog number specifies the key configuration.

For maintenance purposes, the following items should be checked before ordering a replacement:

Inspection Item	Required Check
Model	MPL-B1530U-EJ72AA
Voltage	Confirm 460 V class
Frame	Confirm 63 mm
Stack	Confirm 76.2 mm
Speed	Confirm 7000 rpm
Feedback	Confirm single-turn absolute
Shaft	Confirm keyed shaft
Connector	Confirm SpeedTEC DIN
Brake	Confirm no brake
Mounting	Confirm IEC metric
Dimensions	Confirm mechanical clearance
Weight	Approx. 1.6 kg
Servo drive	Confirm compatibility
Motor parameters	Confirm correct drive configuration
Cable	Confirm correct motor and feedback cable
Load	Confirm torque and inertia requirements

33. Installation Considerations

Before installing the motor, the mechanical and electrical interfaces should be checked carefully.

The mounting flange must match the machine.

The keyed shaft must match the coupling or driven component.

The motor connector should have sufficient clearance for cable installation and should not be forced against nearby machine structures.

The servo drive must be configured with the correct motor data.

Feedback wiring should be installed according to the appropriate servo-system requirements.

The machine should also be checked for mechanical travel limits before commissioning.

34. Servo Sizing Considerations

Selecting the motor based only on its rated output is not sufficient.

A proper servo selection should consider:

• Load torque
• Load inertia
• Reflected inertia
• Acceleration time
• Deceleration time
• Operating speed
• Duty cycle
• Number of starts and stops
• Reversal frequency
• Mechanical efficiency
• Gear ratio
• Coupling characteristics
• Vertical or horizontal load
• Required positioning accuracy
• Required holding condition

For a dynamic application, peak torque is especially important.

For a continuous load, continuous torque is more important.

For a high-speed axis, the operating speed and inertia relationship becomes especially important.

35. Typical Machine Functions

The MPL-B1530U-EJ72AA can be used for machine functions such as:

Indexing

The motor can rapidly move a mechanism from one position to another.

Positioning

The servo system can command the motor to a specific position.

Synchronization

The motor can operate in coordination with other machine axes.

Electronic Gearing

One axis can electronically follow another axis according to a programmed ratio.

Registration

The motor can be used in applications where machine movement needs to remain synchronized with a material or product.

Reciprocating Motion

The low-inertia motor design is suitable for applications involving repeated acceleration, deceleration, and direction changes.

36. Advantages for High-Speed Automation

The combination of 7000 rpm speed and low inertia makes the B1530U a practical choice for high-cycle automation.

In a packaging or indexing machine, for example, the motor may repeatedly accelerate from rest, reach a commanded speed, decelerate, stop, and then repeat.

A low-inertia motor can help reduce the amount of energy required to accelerate the rotor itself and can make the motion-control system more responsive.

The actual machine cycle time, however, depends on the entire mechanical system rather than the motor speed alone.

37. Advantages for Compact Machine Design

The 63 mm frame size provides a relatively compact servo package.

This is useful for:

• Multi-axis machines
• Compact packaging systems
• Small assembly machines
• Inspection equipment
• Automated tooling
• Compact material-handling systems

A compact motor can also help reduce the required machine-frame dimensions when several axes are installed close together.

38. Product Strengths at a Glance

Feature	MPL-B1530U-EJ72AA Advantage
7000 rpm speed	Supports high-speed machine cycles
0.90 Nm continuous torque	Suitable for moderate continuous loads
2.80 Nm peak torque	Supports dynamic acceleration demands
0.39 kW output	Appropriate for compact servo axes
63 mm frame	Compact machine integration
76.2 mm stack	Provides increased torque compared with shorter-stack models
Low rotor inertia	Fast dynamic response
Single-turn absolute feedback	High-resolution closed-loop positioning
Keyed shaft	Conventional torque-transfer interface
Rotatable DIN connector	Flexible cable routing
No brake	Simple configuration where holding brake is unnecessary
1.6 kg motor weight	Relatively light for the performance class

39. Overall Technical Position

The MPL-B1530U-EJ72AA sits in the smaller and medium-capacity portion of the MPL servo motor family.

It is larger and more capable than the B1520U but smaller than the B220T and B230P in terms of the overall motor family progression.

Its main characteristics can be summarized as:

63 mm frame + 76.2 mm stack + 7000 rpm + 0.39 kW + 0.90 Nm continuous torque + 2.80 Nm peak torque + single-turn absolute feedback + keyed shaft + no brake.

These characteristics make the model particularly appropriate for compact, high-speed, closed-loop industrial motion applications.

40. Final Product Parameter Summary

Category	Specification
Model	MPL-B1530U-EJ72AA
Brand	Allen-Bradley
Series	MP-Series MPL
Series type	Low-Inertia Brushless Servo Motor
Product type	Rotary permanent-magnet AC servo motor
Voltage	460 V AC
Voltage class	400 V class
Frame size	15 / 63 mm
Stack length	30 / 76.2 mm
Rated speed	7000 rpm
Maximum speed	7000 rpm
Continuous stall torque	0.90 Nm
Peak stall torque	2.80 Nm
Rated output	0.39 kW
Rotor inertia	0.000023 kg·m²
Feedback	Single-turn high-resolution absolute encoder
Feedback resolution	128 sin/cos cycles/rev
Feedback protocol	Hiperface
Shaft	Keyed
Shaft seal	None
Connector	SpeedTEC DIN
Connector type	Right-angle, 180° rotatable
Brake	None
Mounting	IEC metric flange
Frame dimension	63 mm
Stack dimension	76.2 mm
Key dimensions	Approx. AD 116.3 mm, HD 77.2 mm
Overall length L	Approx. 171.2 mm
Mounting length LB	Approx. 151.5 mm
Shaft key	3 × 3 × 14 mm
Approx. motor weight	1.6 kg
Main application	Industrial servo motion
Typical use	Packaging, assembly, indexing, positioning, material handling, automation

41. Conclusion

The Allen-Bradley MPL-B1530U-EJ72AA is a high-speed, low-inertia servo motor designed for demanding industrial motion-control applications.

Its combination of a 63 mm frame, 76.2 mm magnetic stack, 7000 rpm speed, 0.39 kW rated output, 0.90 Nm continuous stall torque, and 2.80 Nm peak stall torque gives it a useful balance between compact size and dynamic performance.

The single-turn high-resolution absolute encoder provides precise feedback for closed-loop servo control, while the keyed shaft offers a familiar mechanical interface. The SpeedTEC DIN right-angle connector with 180° rotation provides additional flexibility when the motor is installed in a compact machine.

The absence of a brake makes the EJ72AA particularly suitable for applications where motor holding at power-off is not required. Where a brake is needed, the closely related MPL-B1530U-EJ74AA configuration should be considered instead.

For applications requiring multi-turn absolute feedback, the related MPL-B1530U-VJ72AA or MPL-B1530U-VJ74AA configurations provide an alternative feedback arrangement.

Overall, the MPL-B1530U-EJ72AA is a compact, fast-response servo motor intended for precise and repeatable industrial automation. Its strongest characteristics are its high 7000 rpm operating speed, low-inertia rotor, moderate torque capacity, compact 63 mm frame, high-resolution single-turn feedback, and flexible connector arrangement.

For replacement or new-machine selection, the most important parameters to match are the voltage class, frame size, stack length, speed, feedback type, shaft configuration, connector type, brake configuration, mechanical dimensions, load torque, and reflected inertia.