Description
B&R 8LSA45.R0030D000-0 | Size 4 Frame 3.8 Nm Servo
Dynamic Product Introduction
In dynamic multi-axis machinery, standard off-the-shelf induction or low-end motors frequently falter during aggressive acceleration curves. That is precisely where the 8LSA45.R0030D000-0 steps in. Stepping up to a Size 4 frame gives you nearly double the continuous torque footprint of smaller Size 3 motors while maintaining a low-inertia rotor structure—meaning your drive amplifiers do not waste peak current fighting the motor’s own internal mass during rapid direction reversals.
Honestly, what sets this specific configuration apart in field deployments is its high-density stator construction coupled with integrated EnDat optical feedback. When hooked up to an ACOPOS drive, the system performs an instant digital handshake. The drive reads motor parameters straight from the embedded electronic nameplate, avoiding configuration mistakes and keeping commissioning times down to minutes.
8LSA45.R0030D000-0
Key Technical Specifications
| Parameter | Specification | Field Note / Operational Limit |
| Nominal Speed | 3000 RPM | Maximum rating at nominal bus voltage (400/480 VAC) |
| Stall Torque | ~3.8 Nm | Continuous static torque rating (\Delta T = 100 K) |
| Peak Torque | ~14.5 Nm | Available during short dynamic burst ramps |
| Rotor Inertia | ~1.85 kg·cm² | Low-inertia core optimized for fast acceleration |
| Feedback System | EnDat Optical Encoder | Transmits position and internal motor data |
| Ingress Rating | IP65 | Shaft sealing ring included (standard casing sealing) |
| Connection Standard | Dual Intercontec / SpeedTEC | Right-angle rotatable circular connectors |
| Thermal Protection | Integrated KTY/PT1000 Sensor | Monitored directly via encoder signal cable pins |
Global Sourcing & Live-Test SOP (Transparency Core)
Sourcing replacement servo hardware from non-OEM channels requires rigorous verification—otherwise, you risk installing a motor with damaged encoder bearings or insulation breakdown. Here is how we validate every incoming unit before it enters warehouse storage:
- Inbound Mechanical & Electrical Traceability:
Every unit is inspected for physical casing damage, connector play, and radial shaft runout. We verify serial numbers against B&R production records to guarantee genuine manufacturing origin.
- Backplane & Drive Bench Simulation:
The unit is wired directly into a dedicated ACOPOS 1090 test station connected to an Automation Studio control rack.
- Operational Diagnostic Protocol:
- Parameter Flash Validation: We confirm the ACOPOS drive correctly reads the embedded EnDat memory chip, auto-populating motor inductance, winding resistance, and thermal thresholds.
- Dynamic Load Run: Running a continuous 2-hour velocity cycle at 3000 RPM lets us measure bearing sound signature and monitor live thermal curves.
- Insulation Resistance Testing: A 1000V DC Megger test across windings and ground ensures zero stator coil degradation.
- ESD Sealing & Dispatch Prep:
Shaft ends are coated with rust preventive and fitted with plastic caps before the unit is sealed in moisture-barrier anti-static film and high-impact custom foam.
The Field Engineer’s Pitfall Guide
- ❗ EnDat Offset Shift from Mechanical Shock:
Dropping this motor or striking the shaft with a mallet during installation will shift the optical encoder disk relative to the rotor poles. Even a fraction of a degree misalignment causes the ACOPOS drive to trigger severe current spikes or throw
Commutation Fault 9005immediately upon enabling power. Always use shaft insertion tools rather than mechanical force. - ❗ Ignoring Connector Keyway Alignment:
Swiveling the dual SpeedTEC connectors requires care. Forcing the right-angle connectors past their mechanical stops without backing off the locking ring will shear the internal wiring harness, leading to intermittent thermal sensor readouts or encoder communication drops.
- ❗ Incomplete Cable Shielding Grounding:
In high-noise environments near unshielded VFDs, failing to clamp the motor power cable screen to the cabinet earth bar results in position feedback jitter. Noise coupling onto the EnDat data lines can cause random drive trips that look like internal encoder failures — costing hours in unnecessary component swapping.
Intent-Driven FAQ
Will the drive automatically configure itself when I install this motor?
Yes, provided your system uses standard ACOPOS motion control blocks. The embedded EnDat encoder contains an electronic nameplate holding the motor’s exact electrical properties. Upon power-up, the drive reads this data and configures its control loops automatically.
What is the primary difference between the 8LSA45 series and smaller 8LSA35 motors?
The 8LSA45 belongs to B&R’s Size 4 frame family, offering higher continuous stall torque (~3.8 Nm vs ~1.65 Nm) and a larger shaft diameter. While it occupies a wider mounting footprint, it delivers significantly higher mechanical power without overheating under heavy continuous loads.
Can I hot-swap this motor while the ACOPOS drive has power on its DC bus?
Never. Disconnecting or plugging in power cables while the DC bus is energized will cause electrical arcing across contacts and send destructive voltage transients straight through the EnDat feedback lines, destroying the encoder electronics inside the motor.
What should I check if Automation Studio reports a motor overtemperature error on startup?
Check the encoder cable connection first. B&R routes the internal temperature sensor signal through dedicated pins inside the encoder cable. A loose connector or bent pin breaks the circuit, causing the drive to read an open loop and report an artificial thermal fault above 150^\circC.
How do I confirm if a replacement 8LSA45 motor is factory sealed or previously used?
Examine the mounting flange face and the connector gold pins. Unused, factory-sealed stock exhibits zero bolt clamping marks around the mounting holes, pristine circular connector pins without insertion scratches, and protective plastic caps intact over the shaft and connectors.
