Overview
The Allen-Bradley MPL-B420P-MJ22AA Kinetix servo motor is a permanent-magnet rotary motor engineered for dynamic motion control in industrial automation systems. Part of Rockwell Automation’s proven Kinetix lineup, this low-inertia motor delivers reliable performance in precision positioning and speed control applications. The Series A revision incorporates proven servo motor technology for consistent uptime and repeatability in manufacturing and assembly environments.
Key Features
- Low-inertia permanent magnet design for responsive acceleration and precise control
- Multi-turn high-resolution encoder feedback (1024 sin/cos) for absolute position sensing
- Compact 115 mm frame footprint with 2-inch stack length
- No integrated brake—ideal for applications where gravity-assist braking is acceptable
- Keyed shaft with circular bayonet connectors (180° rotatable, right-angle configuration)
- IEC metric mounting flange for standard industrial installation
Technical Specifications
- Power Rating: 2.0 kW
- Continuous Stall Torque: 42 lb-in
- Input Voltage: 480 VAC (three-phase)
- Rated Speed: 5000 RPM
- Frame Size: 115 mm
- Magnetic Stack Length: 2 inches
- Feedback Type: Multi-turn high-resolution encoder (absolute position)
- Shaft Configuration: Keyed shaft, no seal
- Connector Type: Circular bayonet, 180° rotatable
- Mounting: IEC metric flange
- Brake: None
- Weight: Approximately 9.4 lbs (4.3 kg)
- Operating Temperature: 0–40 °C ambient (without forced cooling)
- Series Revision: Series A
Typical Applications
The MPL-B420P-MJ22AA excels in:
- Automated material handling and conveyor systems requiring synchronized multi-axis control
- Injection molding and plastic processing equipment with screw drive positioning
- Packaging machinery requiring precise speed and torque regulation
- Machine tool spindle drives and rotary table indexing
- Robotic arm and gantry system actuation
Compatibility & Replacements
Compatible With
- Allen-Bradley Kinetix servo drive systems (ULTRA, VPL, and MPL drive families)
- CompactLogix and ControlLogix controllers via Kinetix motion instruction set
- Studio 5000 Logix Designer for motion program development
- EtherNet/IP networks for integrated motion communication
- Multi-turn absolute encoder feedback protocols
Replaces / Drop-In Replacement For
The MPL-B420P-MJ22AA is a direct replacement for other Series A MPL-B420P configurations with identical electrical and mechanical interfaces. Verify current model compatibility with your system integrator before ordering, as Series A motors may not be forward-compatible with newer servo drive versions.
Works With
- Rockwell Automation Kinetix 2090 motor and control cables
- Studio 5000 Logix Designer motion libraries
- EtherNet/IP industrial Ethernet communication
- Multi-turn encoder feedback systems and motion profiles
- Standard IEC metric mounting and flange adapters
