Overview
The Allen-Bradley MPM-B1151F-MJ74AA is a Bulletin MPM medium-inertia servo motor from Rockwell Automation’s Kinetix product line. This 460V AC brushless synchronous servo motor operates at a 3000 RPM base speed and delivers 0.75 kW of rated output power. Designed for precision motion control in industrial applications, the MPM-B1151F-MJ74AA combines compact construction with rare-earth magnet technology to minimize rotor inertia while maintaining reliable performance.
Key Features
- Brushless AC Synchronous Design: Permanent rare-earth magnet construction with single magnet stack delivers smooth, reliable operation without commutator wear.
- Multi-Turn Absolute Encoder: 1024 sin/cos high-resolution encoder with Hiperface protocol enables responsive feedback control and precise positioning.
- 24V DC Holding Brake: Integrated spring-set brake prevents shaft rotation at standstill for safety and load holding.
- Rotatable DIN Connector: Circular SpeedTec connector with 180° rotation simplifies cable routing and field installation.
- IEC Metric Mounting: 115 mm bolt circle flange for direct drop-in replacement and flexible system integration.
- Compact Frame: 115 mm frame size with keyed shaft extension and IP65/IP67 enclosure rating for industrial environments.
Technical Specifications
Performance & Power:
- Rated Output: 0.75 kW (1.01 hp)
- Supply Voltage: 460V AC, 3-phase
- Base Speed: 3000 RPM
- Maximum Speed: 4000 RPM
- Continuous Stall Torque: 2.18 N-m (19.3 lb-in)
- Peak Stall Torque: 6.6 N-m (58.0 lb-in)
- Rotor Inertia: 0.00065 kg-m² (0.00575 lb-in-s²)
Construction & Feedback:
- Frame Size: 115 mm (IEC metric)
- Magnet Stacks: 1
- Feedback: 1024 sin/cos absolute multi-turn encoder (Hiperface protocol)
- Shaft: Keyed extension, no seal
- Connector: Circular SpeedTec DIN, right-angle, 180° rotatable
- Enclosure: IP65/IP67 rated
- Brake: 24V DC holding brake (spring-set)
- Mounting: IEC metric flange with 115 mm bolt circle
- Series: Bulletin MPM (MP-Series)
- Revision: Series A (50597)
Typical Applications
The MPM-B1151F-MJ74AA is optimized for medium-inertia, precision-motion applications including printing equipment, web handling systems, converting machinery, and automotive assembly. Its compact size, medium torque output, and responsive encoder feedback make it ideal for:
- Printing and label dispensing equipment
- Web tension control and edge-guided systems
- Material converting and cutting operations
- Automotive component assembly
- Packaging machinery requiring synchronized multi-axis motion
Compatibility & Replacements
Compatible With
- Kinetix 5500 servo drive
- Kinetix 5700 servo drive
- Kinetix 6000 servo drive
- Kinetix 6200/6500 servo drive
- Kinetix 300/350 servo drive
- Kinetix 2000 servo drive
- Kinetix 7000 servo drive
- CompactLogix, ControlLogix, and GuardLogix controllers with Kinetix modules
- EtherNet/IP networks for real-time motion synchronization
Replaces / Drop-In Replacement For
The MPM-B1151F-MJ74AA can directly replace other Bulletin MPM 115 mm single-magnet stack motors operating at 460V and 3000 RPM base speed. Verify compatibility with your system integrator before ordering, as flange orientation and feedback protocol must match your servo drive configuration.
Works With
- Studio 5000 Logix Designer (programming and commissioning)
- Logix Firmware (v30+) with Kinetix motion modules
- EtherNet/IP communication protocol
- Hiperface encoder protocol for multi-turn absolute feedback
- TwinCAT and other third-party EtherCAT-compatible drives (with appropriate gateway)
