Description
The B&R 8LS46.R0045D000-0 (also designated in the 8LSA product line as 8LSA46.R0045D000-0) is a high-dynamic, three-phase AC synchronous servo motor manufactured by B&R Industrial Automation (a member of the ABB Group). Designed for motion control applications in packaging, CNC processing, printing, and robotics, it pairs with B&R ACOPOS / ACOPOSmicro servo drives to deliver high torque density and precise positioning.
Key Specifications & Nomenclature
| Attribute | Details |
| Manufacturer | B&R Industrial Automation / ABB Group |
| Part Number / Model | 8LS46.R0045D000-0 / 8LSA46.R0045D000-0 |
| Motor Type | 3-Phase AC Permanent Magnet Synchronous Servo Motor |
| Motor Size & Length | Size 4 Flange, Length 6 |
| Rated Speed | 4500 RPM |
| Cooling Method | Self-cooling / Natural convection (no external fan required) |
| Feedback / Encoder System | High-resolution EnDat digital absolute encoder / Resolver option |
| Electrical Interface | Angled swivel connector for flexible cable routing |
| Ingress Protection | IP64 standard (IP65 available with shaft seal option) |
Primary Application & System Features
- Plug-and-Play Drive Integration: Contains an embedded parameter chip in the encoder memory. When connected to B&R ACOPOS drives, the drive automatically reads motor parameters (winding inductance, thermal limits, current limits) for instant initialization.
- EnDat Serial Feedback Interface: Utilizes the EnDat digital protocol to transmit absolute position data, enabling homing-free machine startups and high velocity control loop resolution.
- High Torque Density & Low Inertia: Permanent-magnet rotor construction provides fast dynamic acceleration and deceleration profiles needed for high-speed indexing tables and packaging axes.
- Rotatable Angled Connectors: Features 300^\circ rotatable angled power and feedback cable sockets, easing cable strain relief inside tight machine frames.
Servicing & Installation Guidelines
- Drive Power Interlock Safety: Never connect or disconnect motor power or feedback cables while the ACOPOS servo drive is energized. High residual DC bus voltages can cause electrical arcing and damage encoder electronics.
- Shaft Alignment & Coupling Load: Avoid direct hammer blows to the motor shaft during coupling or pulley installation, as axial impacts can damage internal optical encoder glass discs and bearings.
- Thermal Dissipation Clearance: Maintain adequate clearance around the motor housing for natural air convection. Ensure machine mounting surfaces act as an effective heat sink to prevent overtemperature trips.
- Cable Shielding & Grounding: Always use pre-assembled B&R motor power and encoder cables with continuous 360^\circ shield termination to prevent high-frequency PWM switching noise from interfering with feedback signals.
