The Panasonic MSMA042A1B is a high-performance AC brushless servo motor from the industry-leading MINAS A5 series. Engineered for precision and safety, this 400W motor features a High Inertia design coupled with a built-in Electromagnetic Brake. It is the ideal solution for applications requiring stable motion control under heavy loads and secure position-holding during power-off scenarios, such as vertical Z-axis movements.

• Integrated Electromagnetic Brake: Provides essential holding torque to prevent load dropping during power loss or emergency stops
• High Inertia Stability: Specifically tuned to handle larger load-to-rotor inertia ratios, ensuring smooth operation and reducing mechanical resonance
• Ultra-Precise Feedback: Features a 20-bit incremental/absolute encoder (1,048,576 pulses/rev) for high-resolution positioning and superior low-speed stability
• Fast Frequency Response: A 2.0 kHz bandwidth allows for rapid command following and significantly reduced settling times
• Rugged Industrial Build: IP65 rated enclosure (excluding shaft) ensures reliable performance in environments with dust and moisture

Correct identification is vital for replacement parts. Here is the technical breakdown of the MSMA042A1B code:

• MSMA: High Inertia Type (MINAS A5 Series)
• 04: 400W Rated Power Output
• 2: 200V AC Voltage Input
• A: 20-bit Encoder Specification
• 1: Standard Design Sequence
• B: With Brake (This suffix distinguishes it from the non-brake versions like A1A or A1F)

The added safety of the integrated brake makes the MSMA042A1B perfect for:

• Vertical Axis (Z-Axis): Preventing tool or load drops in CNC machines and 3D printers
• Multi-Axis Robotics: Holding arm positions securely when the system is de-energized
• Automated Gates & Elevators: Ensuring position lock in small-scale lifting equipment
• Precision Packaging: Vertical form-fill-seal machines and capping stations