8LSA55.EB030D200-1 B&R 8LS Series AC Synchronous Motor

Description

Product Model: 8LSA55.EB030D200-1
Product Brand: B&R  / B&R Automation
Product Series: 8LS Synchronous Motor Series

Product Features:

• 3 kW class synchronous servo motor, up to 3000 rpm nominal speed
• 4 pole pairs, high torque density; stall torque ~12.5 Nm
• Encoder feedback (multi-turn EnDat / 32-line / safety options) for precise position control
• Multiple mechanical options: variants with/without brakes, different shaft styles, cooling / sealing options

Product Role & System Fit

In many high-performance motion systems, the 8LSA55.EB030D200-1 motor serves as the heart of precise axes—robotic joints, indexing conveyors, gantry systems, or CNC axes. It’s part of B&R’s 8LS synchronous motor series, designed to deliver smooth, low-cogging torque with feedback for tight position control.

When paired with a B&R servo drive (e.g., an ACOPOS or ACOPOSmulti unit), this motor enables fully closed-loop motion control. The feedback encoder option (often a multi-turn or absolute encoder) helps maintain repeatability, safety positioning, and robust diagnostics.

Because the motor supports multiple variants (brake vs no brake, sealing options, shaft types), it integrates cleanly into mechanical designs. Motion engineers often appreciate that the angular or swivel connector options ease cable routing in tight spaces.

In a system architecture, the motor lies at the bottom: drive commands (position, speed, torque) flow from the motion controller → servo drive → motor. The encoder or safety encoder provides feedback upward. Because this motor supports safety-positioning sensors directly, some functional safety logic may live within the motor/encoder, reducing external safety device count.

Applications & Industry Context

The 8LSA55.EB030D200-1 motor is commonly used in industries where dynamics, accuracy, and repeatability are key:

• Robotics & Automation: Rapid acceleration, deceleration, and responsive movement demand low-inertia, high-torque motors.
• Packaging Machinery: Indexing, fill/cap, labeling machines require precise staging motion.
• Printing & Converting: Web drives, networking rolls, or turret systems benefit from smooth torque.
• Assembly & Pick & Place: Precise positional control is vital to avoid collisions or rejects.
• Machine Tools: For spindle support in lower-speed axes or tooling axes.
• General Motion Systems: Conveyor segments with accurate positioning, multi-axis coordination tasks.

Because it supports safety-measurement (via safety encoders), the motor can also be used in safety-critical axes (e.g. where safe stops or safe position feedback are mandated by safety standards).

The modular nature of the 8LS series (shared hardware platform across sizes) aids standardization: engineers can move between power levels while retaining common control strategies and software configuration.

One vendor listing cites: “model: 8LSA55.EB030D200-1, rated power 3 kW, rated voltage 480 VAC, speed 3000 rpm, torque 19 Nm, max torque 54 Nm.”
Another gives: “nominal torque ~12.5 Nm” for the same frame size with 4 pole pairs.

Thus, its performance envelope fits mid-power servo roles — high enough for many axes, yet compact enough to maintain responsiveness.

Technical Features & Benefits

This motor packs several features that deliver real value in real automation projects:

High Torque Density and Smooth Dynamics
With its synchronous construction, the 8LS motor offers low cogging torque and excellent low-speed behavior. That means smoother motion transitions and lower mechanical resonance in precision systems.

Strong Feedback Options
The motor supports advanced encoder options (multi-turn, absolute, EnDat, safety-encoder) enabling high precision, repeatability, and safety position feedback. These capabilities simplify integration of functional safety.

Mechanical Flexibility
The design supports variants: with or without holding brake, oil seals or open shafts, reinforced bearings, different shaft types, and cable exit options (angled/swivel connectors). This flexibility lets designers adapt to mechanical constraints.

Cooling & Environmental Design
Within its frame, options may include self-cooling or forced cooling, depending on mounting and ambient constraints. The robust design typically tolerates industrial conditions like vibration, temperature variation, and dust.

Compatibility & Integration
The motor fits neatly with B&R’s motion control ecosystem. Commissioning tools (e.g. Automation Studio) allow auto-detection and tuning, reducing setup time. Δ
Because the 8LS family is a standard series, parts and replacement motors often share common mechanical features or mounting dimensions.

Reliability & Safety Capability
Given that the motor is offered with safety-capable encoders, it supports safety functions (SIL2, PL d) within integrated systems. Also, the motor is built with quality assurance (100% inspection, robust mechanical coupling checks) to minimize alignment or shaft coupling errors.

From a system perspective, these features provide:

• Easier commissioning and parameter tuning
• Lower maintenance, thanks to sturdy bearings and design
• Faster replacement or modular swap-in of motors if needed
• Cleaner, safer layouts because safety feedback can live within the motor

Technical Specifications

Below is a table summarizing the known and plausibly inferred spec set:

Because some specs like weight, inertia, or full torque curves are not publicly listed, you should request full datasheets from B&R or your distributor before detailed mechanical/thermal design.

Installation & Maintenance Insights

To make sure the motor delivers its full performance over time, practitioners use several best practices:

Mounting & Alignment
Ensure precise shaft alignment with minimal radial or angular misalignment. Use coupling quality checks (run-out, tolerances). A smooth, rigid mounting base helps avoid resonance.

Cooling and Ventilation
Allow adequate airflow around the motor body, especially if the motor is in an enclosure. For high duty or high ambient conditions, forced ventilation or cooling ducts may help.

Cable Routing & Shielding
Encoder and motor power cables should be separated and shielded. In operations with noise (switching, drives), proper grounding and shielding reduce interference on feedback lines.

Encoder Connection & Calibration
When using absolute or safety encoders, follow careful calibration steps—program correct encoder counts, check zero settings, and validate encoder signal integrity during commissioning.

Brake Installation (if applicable)
If using a holding brake variant, observe correct voltage, wiring, and safe mechanical mounting. Periodic testing of brake engagement under load is a good practice.

Periodic Maintenance
Check bearings periodically (vibration, noise), inspect connectors, and ensure no mechanical looseness. While synchronous motors tend to be robust, misalignment or shaft overload over time can degrade performance.

Spare Motor & Replacement Strategy
Because the 8LS series is standardized, having a spare motor of equivalent size (same frame, shaft, mounting) helps fast swap-outs. Keep matching encoder, coupling, and mechanical data available.

Safety & Diagnostics
If using the safety encoder variant, test safety feedback paths (redundant or safety functions) periodically. Use motor diagnostics—temperature, torque, current, feedback errors—to preempt problems.

In well-maintained systems, these motors often run for years with little adjustment — making them dependable foundations in motion systems.

Related Models

These are some sibling or alternative motors in the same or adjacent classes:

• 8LSA55.EB030D000-1 — lower variant without “200” suffix
• 8LSA55.EB030D200-3 — a version with variant suffix “-3”
• 8LSA55.EA030D000-3 — another variant in the 8LSA series
• Other 8LS series — same family frame but different power, pole, encoder, or shaft options