B&R 8MSA5X.R0-X400-1 AC Synchronous Servo Motor

Description

Product Introduction

The B&R 8MSA5X.R0-X400-1 is a high-dynamic three-phase AC synchronous servo motor engineered for pairing with B&R ACOPOS drive architectures. Designed for mid-to-high torque industrial motion applications, this motor features a 130mm flange design, integrated mechanical holding brake, and self-cooled housing. It handles fast acceleration profiles, strict positioning tolerances, and continuous start-stop duty in automated manufacturing cells.

Unlike lower-tier general-purpose induction motors or uncalibrated third-party servos, the 8MSA5X.R0-X400-1 incorporates high-density neodymium magnet rotors and low-cogging stator geometry. This design ensures minimal torque ripple across low speed bands while maintaining high dynamic responsiveness up to 4500 RPM. The integrated electronic parameter memory allows ACOPOS drives to auto-identify the motor, eliminating manually typed motor tables and reducing commissioning times.

Key Technical Specifications

Application Scenarios & The “Trench” Experience

A high-speed automotive stamping line shuts down abruptly at 1:45 AM during a shift change. The main sheet-feeder axis motor lost its internal holding brake coil due to thermal fatigue, causing the vertical z-axis axis to drop and crush a proximity sensor array. The line loses $1,200 per minute in idle overhead. You do not have 8 weeks to wait for an OEM factory assembly in Europe. You need an exact-fit 8MSA5X unit with the factory brake option sitting in a crate, ready to mount to the gearbox before the morning shift arrives.

• Automotive Gantry & Transfer Arms – Vertical z-axis positioning and pick-and-place grippers – Requires the integrated 15 Nm holding brake to prevent load drop during emergency stops or power loss.
• High-Speed Packaging Machines – Intermittent cross-cutters and rotary indexers – Leverages the 4500 RPM speed rating and 6-pole design for rapid deceleration and acceleration cycles without over-shooting.
• Plastics & Injection Molding Automation – High-speed side-entry robot extractors – Relies on high torque density and low-inertia rotor construction to minimize cycle times.
• Printing & Converting Equipment – Precision web tensioning and registration rolls – Relies on smooth low-speed torque delivery to eliminate register error marks on web material.

8MSA5X.R0-X400-1

8MSA5X.R0-X400-1

Transparency SOP: Quality Assurance & Testing

We do not just ship boxes; we test them on actual B&R test benches. Every 8MSA5X.R0-X400-1 passes a strict quality assurance protocol before dispatch:

1. Inbound Mechanical & Seal Check: Inspect the 130mm mounting flange, check shaft runout, verify connector threads, and confirm OEM serial tags.
2. Electrical Stator & Brake Diagnostics: Perform phase-to-phase resistance balance tests, 1000V DC Megger insulation testing to ground, and verify the 24V DC holding brake coil pickup/release current.
3. Encoder & Feedback Verification: Connect feedback lines to a live test rig to verify line counts, absolute position handshakes, and EnDat/Resolver signal integrity.
4. Live ACOPOS Drive Dynamic Run: Run the motor on a B&R ACOPOS drive up to rated 4500 RPM to evaluate thermal rise, check bearing vibration levels, and confirm current draw against baseline factory specs.
5. Cleanroom QC & Moisture Barrier Prep: Apply rust inhibitor to the exposed shaft, install protective connector caps, wrap in heavy ESD/VCI foil, and pack inside custom foam-suspended shipping containers.

The Veteran’s Tech Trap Guide (Crucial Value-Add)

⚠️ Confirm the Holding Brake Supply Voltage: The integrated holding brake requires clean 24V DC power to disengage. If your power supply sags below 21.6V DC during high cabinet loads, the brake will drag while the motor turns. This cooks the friction lining in minutes and trips overcurrent faults on your ACOPOS drive.

❗ Never Hammer the Shaft Coupling: The 8MSA5X utilizes high-precision internal bearings and a feedback device tuned to tight optical/magnetic tolerances. If you drive a coupling or pulley onto the smooth shaft with a hammer, you will brinell the bearings and ruin the internal encoder disk. Use a proper draw-bolt tool or thermal expansion coupler.

⚠️ Match the Connector Angle and Cable Clearance: The connector housing on the .R0 variant is top-mounted/upward facing. Ensure you have adequate bend radius clearance in your machine enclosure. Forcing heavy B&R motor power cables into tight 90-degree bends will crack the internal pin solder joints over time.

Frequently Asked Questions (FAQ for Conversion)

Q: Can I replace an 8MSA5X motor with an 8LSA series motor without changing code?

A: No. While 8LSA and 8MSA series share similar mounting footprints in some frame sizes, their winding inductances, rotor inertia profiles, and feedback parameters differ. You must update your hardware configuration tree in B&R Automation Studio and re-tune the velocity loops to avoid drive instability.

Q: Is the holding brake intended for dynamic stopping?

A: No. The integrated 15 Nm holding brake is a power-off safety holding brake. It is designed to hold static loads when the motor is stopped. Using it routinely as a dynamic brake to stop high-speed motion will destroy the friction surfaces.

Q: Does this motor ship with the mating power and feedback plugs?

A: Motors ship standard with the integrated Speed-Tec circular connector receptacles mounted on the body. The mating cable plugs are typically part of the B&R pre-assembled cable harness assemblies (8MSC series), though we can supply loose mating plugs upon request.

Q: Is this unit new surplus, and does it carry a warranty?

A: Yes. This is authentic B&R New Surplus stock derived from canceled integration projects or system overstock. Every unit undergoes complete bench testing SOP and comes backed by our full 12-month operational warranty.

Q: Why buy surplus instead of ordering directly from the OEM distributor network?

A: Direct OEM factory lead times for 8MSA series motors can stretch anywhere from 8 to 16 weeks depending on manufacturing runs. Purchasing verified, bench-tested surplus gets your machine running within 24 to 48 hours at a lower capital cost.