LUST LSG-096-3-30-560/1RB5JZ AC Servo Motor – LSG Series

LUST LSG-096-3-30-560/1RB5JZ — Compact AC Synchronous Servo Motor for Closed-Loop Motion Control

The LUST LSG-096-3-30-560/1RB5JZ is a 96 mm flange-frame AC synchronous servo motor from LUST Antriebstechnik GmbH, engineered for high-precision closed-loop positioning in industrial automation systems. Operating at a rated bus voltage of 560 V DC link with a nominal mechanical speed of 3000 RPM and a 3-pole-pair rotor topology, this motor is designed to deliver consistent torque output across the full speed range while maintaining thermal stability under continuous duty cycles. The 1RB5JZ suffix encodes a specific resolver-based feedback variant with defined shaft geometry and connector configuration, making it a direct-fit replacement or upgrade component for LUST CDA and CDB series servo drive platforms.

Within a servo axis, the LSG-096-3-30-560/1RB5JZ functions as the electromechanical transducer that converts drive-generated three-phase PWM voltage into controlled rotational torque. The resolver feedback device embedded in the motor housing transmits rotor position data back to the drive’s current controller at sampling intervals typically below 125 µs, enabling the drive to execute torque vector control with sub-millisecond correction latency. This feedback architecture is fundamental to achieving the positioning repeatability and velocity stability demanded by CNC machining centers, robotic joints, and precision assembly equipment.

The motor’s 96 mm square flange (IEC 72-1 / NEMA equivalent) and compact axial length make it suitable for integration into machine envelopes where space is constrained without compromising the torque-to-inertia ratio required for dynamic motion profiles. The winding insulation is rated to Class F (155°C), providing thermal headroom for high-duty-cycle applications where ambient temperatures and self-heating must both be accounted for in the thermal budget of the drive cabinet.

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Technical Parameters

Hardware Logical Analysis

The LSG-096-3-30-560/1RB5JZ employs a surface-mounted permanent magnet (SMPM) rotor topology. In SMPM designs, the magnets are bonded to the outer rotor surface, producing a near-sinusoidal air-gap flux distribution. This geometry yields a low rotor moment of inertia relative to the available peak torque, which directly reduces the mechanical time constant of the axis and allows the drive’s velocity loop to operate at higher bandwidth without exciting structural resonances in the load train.

The resolver feedback device integrated into the motor rear housing operates on the principle of transformer coupling between a rotor winding and two stator windings oriented 90° apart. The resolver excitation signal (typically 7–10 kHz, 7 V RMS) is supplied by the drive’s resolver-to-digital converter (RDC). The resulting sine and cosine output signals encode absolute rotor position within one electrical cycle, with the drive firmware performing interpolation to achieve angular resolution typically in the range of 12–16 bits per revolution. Unlike optical encoders, the resolver has no internal electronics and is inherently immune to contamination, vibration shock, and temperature extremes — a significant reliability advantage in harsh industrial environments.

The stator winding configuration uses distributed windings with a short-pitch coil arrangement to suppress harmonic torque ripple. This reduces the cogging torque component that would otherwise introduce periodic velocity disturbances at low speeds — a critical parameter for applications such as grinding spindles or precision dispensing systems where velocity uniformity below 10 RPM is required.

EMC performance is addressed at the motor level through the use of a shielded motor cable interface and a grounded motor housing. The 560 V DC link rating indicates the motor is designed for use with drives operating from 400 V AC three-phase mains (rectified DC link ≈ 565 V), which is the standard industrial supply voltage in European and Asian markets. The winding insulation system is rated for the high dV/dt stress imposed by modern IGBT-based PWM inverters, with switching frequencies typically in the 4–16 kHz range.

System Integration Benefits

• Direct LUST Drive Compatibility: The 1RB5JZ resolver variant is factory-matched to LUST CDA/CDB drive resolver input circuits, eliminating the need for resolver-to-encoder conversion modules and reducing wiring complexity.
• High Torque Density in 96 mm Frame: The SMPM rotor design achieves a torque-to-volume ratio that allows machine designers to reduce axis footprint without downgrading dynamic performance specifications.
• Deterministic Feedback Latency: Resolver-based position feedback introduces no digital communication latency between the sensor and the RDC, supporting current loop execution at 8 kHz or higher without feedback-induced phase lag.
• Thermal Margin for Continuous Duty: Class F insulation with a 155°C rating provides a thermal buffer of approximately 55°C above the Class B limit, extending motor service life in high-ambient or high-duty-cycle installations.
• IP65 Sealing for Industrial Environments: The shaft seal and connector-side protection prevent ingress of coolant mist, metal swarf, and dust — common contaminants in machining and metalworking environments.
• Fieldbus Agnostic via Drive Layer: Because the motor interfaces exclusively with the drive, the system can be adapted to PROFIBUS-DP, CANopen, EtherCAT, or analog command interfaces by selecting the appropriate drive firmware and communication module, without any modification to the motor.
• STO Safety Function Support: When paired with a LUST drive implementing Safe Torque Off (STO) per IEC 62061 / EN ISO 13849-1, the motor axis achieves SIL 2 / PLd safety integrity without additional external contactors, reducing panel space and wiring cost.
• Diagnostic Transparency: The drive continuously monitors resolver signal amplitude, phase angle, and excitation frequency. Signal degradation, cable break, or resolver failure generates a specific fault code, enabling predictive maintenance before an unplanned axis shutdown occurs.
• Low Cogging for Velocity Uniformity: Distributed short-pitch stator windings minimize torque ripple, supporting smooth velocity control at speeds below 10 RPM — relevant for winding, dispensing, and inspection axis applications.
• Standardized Mechanical Interface: The 96 mm IEC flange and metric shaft dimensions conform to standard coupling and gearbox interfaces, simplifying mechanical integration and enabling direct substitution in existing machine designs.

Quality Assurance & Global Logistics

Every LUST LSG-096-3-30-560/1RB5JZ unit supplied by siemensplc.com is sourced through verified industrial supply channels. Each unit undergoes a structured incoming inspection protocol prior to dispatch: visual examination of housing, flange, and shaft for mechanical damage; connector pin integrity check; resolver winding continuity and insulation resistance measurement (≥100 MΩ at 500 V DC); and stator winding resistance balance verification across all three phases. Original manufacturer labels, date codes, and serial numbers are preserved intact and documented in the shipment record.

Units are packaged in anti-static foam inserts within moisture-barrier poly bags, sealed inside rigid double-wall corrugated cartons rated for international air freight handling. Export documentation — commercial invoice, packing list, certificate of origin, and HS code declaration — is prepared for each shipment to facilitate customs clearance in the destination country.

Logistics are executed from our Xiamen, China operations center. Standard international transit times are 3–5 business days via DHL Express or FedEx International Priority to major industrial hubs in Europe, Southeast Asia, the Middle East, and the Americas. For time-critical procurement, same-day dispatch is available for orders confirmed before 14:00 CST. All shipments include full tracking and are covered by carrier insurance for the declared value.

A 12-month warranty is provided on all units against defects in materials and workmanship under normal operating conditions. Warranty claims are processed with a target response time of 1 business day, and replacement units are dispatched upon fault confirmation.

Contact Information

Email: [email protected]
WhatsApp: +86 18359268345
Web: siemensplc.com
Location: Xiamen, China
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