Allen-Bradley MPL-B320P-RJ22AA MPL Servo Motor

Allen-Bradley MPL-B320P-RJ22AA MPL Servo Motor

Configured for rotary servo actuation in Kinetix systems, the Allen-Bradley MPL-B320P-RJ22AA (MPL-B320P-RJ22AA low-inertia servo motor) provides permanent-magnet motor torque with resolver feedback. The motor uses a 100 mm IEC metric frame, 2 in. magnetic stack, 5000 rpm rated speed, shaft key, and bayonet connector.

Hardware Specifications

Kinetix Servo Motor Mechanical and Feedback Characteristics

The MPL-B320P-RJ22AA uses a permanent-magnet rotor and low-inertia construction for servo motion applications requiring controlled rotary acceleration.

The 2-pole resolver provides rotor position feedback to the compatible servo control system. Resolver wiring should remain separated from high-current motor conductors to reduce electromagnetic coupling.

The 100 mm frame and IEC metric mounting flange define the mechanical interface. The shaft key provides positive mechanical coupling between the motor shaft and driven equipment.

The supplied data identifies a circular bayonet connector with a facing-shaft arrangement and 180 deg rotational capability. Connector orientation should be verified before final cable routing.

No mechanical brake is specified for this model. The driven axis therefore requires external stopping or holding provisions when the application requires stationary load retention.

Frequently Asked Questions

Q: Does the MPL-B320P-RJ22AA include a mechanical holding brake?
A: No. The supplied specifications explicitly identify the motor as having no brake.

Q: What feedback device is integrated into this servo motor?
A: The motor uses a 2-pole resolver for rotor position feedback.

Q: What shaft and mounting interfaces are specified?
A: The motor has a keyed shaft without a shaft seal and uses an IEC metric mounting flange.

Field Installation Guidelines

• Verify the motor nameplate voltage and compatible servo drive configuration before energizing the motor.
• The supplied material contains both 400 V AC and 480 VAC identifiers; verify the exact motor rating from the physical nameplate before commissioning.
• Match the resolver feedback wiring to the designated drive feedback terminals and maintain correct signal polarity.
• Route resolver and other low-level feedback wiring separately from motor power conductors where practical.
• Bond the motor housing and protective earth conductor according to the applicable electrical installation standard.
• Ensure the IEC metric mounting interface is mechanically aligned before tightening mounting hardware.
• Align the keyed shaft with the driven component and avoid applying radial or axial loads beyond the mechanical limits specified by the applicable motor documentation.
• Secure the bayonet connector fully and prevent cable movement from transferring mechanical stress to the connector.
• Because no brake is installed, provide an external mechanical holding method when gravity or stored mechanical energy can move the axis after power removal.
• Confirm resolver feedback operation and motor rotation direction during controlled commissioning before applying the full machine load.