B&R 8LSA45.R0030D000-0 1.935 kW Servo Motor

Description

Key Technical Specifications

Parameter	Value
Manufacturer	B&R Industrial Automation
Model	8LSA45.R0030D000-0
Product Family	8LS
Motor Type	Three-phase synchronous motor
Frame / Size	45 / Size 4
Length Code	5
Rated Speed	3,000 rpm
Rated Torque	6.16 Nm
Stall Torque	8.0 Nm
Rated Power	1,935 W
Rated Current	3.78 A
Feedback	R0 resolver, 2-pole
Cooling	Self-cooling, design A
Shaft	Smooth shaft
Centering Diameter	95 mm, j6
Connector	Angled/swivel connector
Holding Brake	None
Oil Seal	None
DC Bus / Motor System	560 VDC class
Motor Weight	Approximately 6.5 kg without brake

The exact model is identified in current catalog listings as a B&R 8LS three-phase synchronous motor with 3,000 rpm rated speed and a resolver feedback system. A catalog entry also specifies a 95 mm j6 centering diameter, smooth shaft, angled swivel connector, self-cooling, no holding brake, and no oil seal.

Important specification warning: Several reseller databases incorrectly associate this exact part number with approximately 0.75 kW, 2.39 Nm, and EnDat feedback. Those figures appear to belong to a different 8LSA45 configuration. The exact 8LSA45.R0030D000-0 catalog identification is the safer reference for procurement: 1,935 W, 6.16 Nm, 3,000 rpm, and resolver feedback. Verify the nameplate against the OEM documentation before installation.

 

Product Introduction

The B&R 8LSA45.R0030D000-0 is a self-cooled, three-phase synchronous servo motor in the 8LS family. The exact configuration is rated at 3,000 rpm, 6.16 Nm, and 1,935 W, with a two-pole R0 resolver for closed-loop motion feedback. It uses a smooth shaft, angled swivel connector, 95 mm j6 centering diameter, and no holding brake.

This configuration is suited to B&R motion-control installations where the existing machine architecture already specifies the 8LS motor family and resolver feedback. The mechanical details matter: do not substitute an EnDat-equipped or brake-equipped 8LSA45 simply because the frame designation appears similar.

Installation & Configuration Guide

Stage 1: Pre-Installation Preparation — Approximately 10 Minutes

⚠️ Safety First: Notify operations, place the machine in a verified safe state, isolate the servo drive, and apply lockout/tagout. Do not rely on a fixed five-minute delay as proof that the DC bus is discharged. Follow the applicable B&R drive procedure and verify the electrical state with an appropriate meter.

Tools Required:

• ESD wrist strap
• PH1 screwdriver where applicable
• Suitable hex/socket tools
• Multimeter
• Torque wrench
• Wire labels
• Smartphone for reference photographs

Data Backup:

1. Save the current B&R Automation Studio project.
2. Record the existing motor material number.
3. Photograph the motor nameplate.
4. Record the installed servo drive model.
5. Photograph the motor connector and cable routing.
6. Record current axis and motor parameters.
7. Save any drive commissioning data.
8. Photograph the mechanical coupling before removal.

⚠️ Resolver identification is critical. Do not replace this motor with an apparently similar 8LSA45 using a different feedback technology without checking the drive configuration.

Stage 2: Removing the Old Motor — Approximately 10 Minutes

1. Verify zero hazardous energy before disconnecting the motor.
2. Remove machine guarding necessary to access the motor.
3. Label the motor cable and connector.
4. Photograph the connector orientation.
5. Disconnect the motor cable carefully.
6. Release the coupling, gearbox, pulley, or other mechanical interface.
7. Support the motor before removing mounting fasteners.
8. Remove the mounting bolts.
9. Pull the motor straight away from the mounting surface.
10. Inspect the mounting face, centering bore, shaft, coupling, and connector for damage.

⚠️ Do not force the motor out of a misaligned coupling. Excessive mechanical force can damage bearings or the shaft.

Keep the old motor beside the machine until the replacement has completed commissioning.

Stage 3: Installing the New Motor — Approximately 10 Minutes

1. Confirm the complete model: 8LSA45.R0030D000-0.
2. Verify the replacement nameplate before mounting.
3. Confirm the motor has a smooth shaft.
4. Confirm the mounting centering diameter is compatible with the machine.
5. Check the coupling for wear or contamination.
6. Clean the mounting surfaces.
7. Align the motor with the machine mounting face.
8. Never use mounting bolts to force an incorrectly aligned motor into position.
9. Install and torque the mounting hardware according to the machine/OEM specification.
10. Reconnect the resolver/motor connector.
11. Route the cable without excessive bending, twisting, or connector loading.

Self-Checklist:

• Exact model verified
• Resolver configuration verified
• Smooth shaft verified
• 95 mm centering interface checked
• Coupling aligned
• Mounting bolts torqued
• Connector fully seated
• Cable routing secured

Stage 4: Power-On & Testing — Approximately 10–20 Minutes

1. Check the motor and drive wiring before energizing.
2. Verify there is no short circuit on the relevant power conductors.
3. Power the control system according to the machine’s commissioning procedure.
4. Check the B&R drive diagnostic state.
5. Open the applicable Automation Studio project.
6. Confirm the configured motor corresponds to 8LSA45.R0030D000-0.
7. Verify the feedback configuration uses the correct resolver arrangement.
8. Check motor speed, torque, and current parameters.
9. Clear no faults until the underlying cause has been identified.
10. Perform a low-speed jog with the machine mechanically secured.
11. Verify the direction of rotation.
12. Check actual speed and feedback response.
13. Run the axis through a controlled speed range.
14. Monitor drive current, following error, resolver feedback, and motor temperature.
15. Return the machine to production only after the complete motion sequence passes.

⚠️ Do not use the 0.75 kW / 2.39 Nm specification found on some reseller pages for commissioning this exact motor. Those values conflict with the more specific catalog records identifying this exact part number as 1,935 W / 6.16 Nm.

Technical Pitfall & Survival Guide

1. ❗ Resolver vs. EnDat Mismatch

This model is identified with an R0 resolver, 2-pole feedback system. Some online listings incorrectly describe the same part number as an EnDat motor.

Avoidance: Read the actual nameplate and verify the feedback type in the B&R documentation before commissioning.

2. ❗ Wrong 8LSA45 Variant

The 8LSA45 family contains multiple motor configurations. The suffix is not cosmetic. Shaft type, feedback, brake configuration, speed, and electrical characteristics can change.

Avoidance: Purchase against the complete 8LSA45.R0030D000-0 number, not simply “8LSA45.”

3. ❗ No Holding Brake

This exact configuration has a 0 Nm holding brake specification.

If the axis carries a vertical load, do not assume the servo motor will mechanically hold it when disabled. Use the machine’s designed mechanical holding arrangement.

4. ❗ No Oil Seal

The catalog specification identifies this configuration without an oil seal.

If the motor is exposed to gearbox oil, coolant, or washdown contamination, verify that the actual machine environment is compatible before installation.

5. ❗ Mechanical Centering

The specified centering diameter is 95 mm with j6 tolerance. A visually similar motor with another centering dimension is not a drop-in mechanical replacement.

6. ❗ Connector Orientation

The D000 configuration uses an angled/swivel connector arrangement. Cable clearance should be checked before final motor positioning.

 

Frequently Asked Questions (FAQ)

Can the B&R 8LSA45. be hot-swapped?

No. Treat the motor as a de-energized component. Isolate the servo drive, apply lockout/tagout, and verify the drive’s hazardous voltage has discharged before disconnecting the motor.

What is the rated power of 8LSA45.?

The exact-part-number catalog data identifies 1,935 W rated power, with 3,000 rpm rated speed and 6.16 Nm rated torque.

Some reseller pages incorrectly list 0.75 kW for this part number. Do not use that conflicting value for drive sizing or replacement engineering without resolving the discrepancy against the motor nameplate and OEM documentation.

What feedback device does this motor use?

The exact model is identified as an R0 resolver, 2-pole configuration. This is one of the most important replacement checks.

Do not assume an EnDat-equipped 8LSA45 is equivalent.

Does 8LSA45. have a holding brake?

No. The catalog specification lists 0 Nm holding-brake torque.

For a vertical axis, check the machine’s external braking or mechanical load-holding arrangement before replacing a brake-equipped motor with this version.

Is this model a direct replacement for another 8LSA45 motor?

Not automatically. The complete suffix must match the required speed, resolver configuration, shaft arrangement, connector arrangement, centering diameter, brake status, and electrical parameters.

A common mistake is to match only the 8LSA45 family designation. That is not sufficient for a production replacement.

Will replacing the motor erase the PLC or motion program?

Normally, removing the motor does not erase the PLC application. However, the axis configuration and drive parameters must still be checked after replacement.

Before removing the original motor, save the Automation Studio project and document the existing axis configuration. If the replacement feedback characteristics differ, commissioning may require parameter changes.

Is this motor new, surplus, or refurbished?

The material number alone does not establish physical condition. Procurement documentation should explicitly identify Factory Sealed, New Original / New Surplus, or Refurbished (tested).

For refurbished stock, request the serial number, nameplate photograph, resolver test results, insulation test results, and functional test report. Do not accept a vague “tested” description as equivalent to factory-new condition.

Is 8LSA45. still available?

Current third-party catalogs still list the exact part number and offer new or renewed procurement options. Availability varies by supplier and should be confirmed against the actual serial-numbered stock before placing a production-critical order.