Allen-Bradley MPL-B540K-SK72AA MP-Series rotary servo motor

Rockwell Automation identifies MPL-B540K-SK72AA as an MP-Series MPL 480 V AC rotary servo motor. Rockwell describes 460 V, 165 mm frame size, 101.6 mm stack length, 4000 rpm, single-turn high-resolution encoder, and no brake.

Documented product role

Rebuilt from individual evidence

Rockwell Automation identifies MPL-B540K-SK72AA as an MP-Series MPL 480 V AC rotary servo motor.

Rockwell describes 460 V, 165 mm frame size, 101.6 mm stack length, 4000 rpm, single-turn high-resolution encoder, and no brake.

The documented product function places this unit between the control system and its connected operator or mechanical interface.

Unknown: installation-specific compatibility, replacement fit, and current commercial availability require separate evidence.

Exact reference: MPL-B540K-SK72AA
Category: Motors / Servo
Evidence checked: 2026-09-12

System role

This section explains what the product does and where it acts in the surrounding system.

Function: Converts commanded electrical energy into controlled rotary motion for a servo axis.
System position: Sits between a paired servo drive and the mechanical load in a motion-control axis.
Upstream / inputs: Accepts power and encoder feedback from the paired servo drive through the SpeedTEC connector.
Downstream / outputs: Delivers controlled rotary torque to the mechanical load.
Limitations: Unknown: installation-specific compatibility, replacement fit, and current commercial availability require separate evidence.

Evidence ledger

Facts, inferences, and unknowns are kept separate.

Facts

Rockwell Automation identifies MPL-B540K-SK72AA as an MP-Series MPL 480 V AC rotary servo motor.
Confidence: high
- www.rockwellautomation.com — retrieved 2026-09-12; high confidence
Rockwell describes 460 V, 165 mm frame size, 101.6 mm stack length, 4000 rpm, single-turn high-resolution encoder, and no brake.
Confidence: high
- www.rockwellautomation.com — retrieved 2026-09-12; high confidence

Inferences

The documented product function places this unit between the control system and its connected operator or mechanical interface.
Confidence: medium
Rationale: The system position follows from the documented product type, interfaces, and stated operating role.
- www.rockwellautomation.com — retrieved 2026-09-12; high confidence

Unknowns

Unknown: installation-specific compatibility, replacement fit, and current commercial availability require separate evidence.
Confidence: low
Missing evidence: The captured source does not establish installation-specific compatibility, replacement fit, or current commercial conditions.

System position diagram

A flow from an upstream control interface through MPL-B540K-SK72AA to a downstream interface. — The diagram shows the documented position of the exact item in an industrial control path.

View Mermaid source

flowchart LR
  U["Upstream control interface"] -->|"documented input"| P["MPL-B540K-SK72AA"]
  P -->|"documented output"| D["Downstream operator or mechanical interface"]

View diagram labels

Nodes: Allen-Bradley MPL-B540K-SK72AA MP-Series rotary servo motor
Edges: Documented system data path

Next action

Rockwell Automation identifies MPL-B540K-SK72AA as an MP-Series MPL 480 V AC rotary servo motor.

Confirm the complete order code, paired equipment, and installation requirements before commissioning.

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