LTi DRiVES LST-074-2-30-560/T1 Servo Motor

The LTi DRiVES LST-074-2-30-560/T1 is a permanent magnet synchronous servo motor engineered for precise and dynamic motion control. With a rated torque of 1.3 Nm, a rated speed of 3000 rpm, and compatibility with a 560 VDC intermediate circuit, this motor is suitable for a wide range of industrial drive tasks. Its compact construction and high power density make it a practical solution for machine axes where space and performance are important.

Motor Design and Construction

The LST series is characterized by a robust mechanical design that supports high acceleration and continuous operation. The motor uses rare-earth permanent magnets in the rotor, which eliminates the need for rotor excitation and contributes to high efficiency. The stator winding is designed for low losses and good thermal behavior. The housing provides effective heat dissipation and mechanical protection, while the mounting flange allows direct coupling to gearboxes, pulleys, and other machine elements.

Electrical Characteristics

The model designation LST-074-2-30-560/T1 indicates key electrical and mechanical properties. The rated torque of 1.3 Nm provides sufficient force for many positioning and feed applications. The rated speed of 3000 rpm supports rapid traverse movements and short cycle times. The 560 VDC bus voltage is compatible with modern servo drives that operate from a rectified three-phase supply. The motor is designed to deliver high peak torque for short periods, enabling fast acceleration and deceleration.

Feedback and Control Compatibility

Servo motors in the LST family are typically equipped with feedback devices such as resolvers or encoders. The feedback system provides rotor position and speed information to the servo drive, which is essential for field-oriented control. The T1 designation may refer to a specific feedback or connection variant. The motor can be paired with LTi DRiVES servo controllers that support the corresponding feedback interface and voltage class.

Thermal Management

Thermal performance is a critical factor in servo motor selection. The LST-074-2-30-560/T1 is designed to manage heat generated during continuous and intermittent operation. The winding insulation system is suitable for standard industrial ambient conditions. When the motor is mounted on a metal machine frame, additional heat can be transferred through the flange. In applications with high duty cycles, forced air cooling or liquid cooling may be considered, depending on the specific motor variant and operating conditions.

Mechanical Integration

The motor shaft and flange dimensions are designed for standard mechanical interfaces. The shaft may include a keyway or a smooth surface, depending on the version. Coupling to the load should be aligned carefully to avoid radial and axial forces that could damage bearings. The motor can be mounted in horizontal or vertical orientation, provided that lubrication and sealing requirements are observed. The power and feedback connectors are positioned for convenient cable routing in the control cabinet or machine frame.

Dynamic Performance

High dynamic response is achieved through a low rotor inertia and a magnetic circuit that supports rapid current changes. This allows the motor to follow complex motion profiles with minimal lag. The drive can implement position, velocity, and torque control modes. In multi-axis systems, the motor can be synchronized with other axes for coordinated motion, such as in gantry systems, rotary tables, and interpolating machine tools.

Applications

The LST-074-2-30-560/T1 is suitable for applications such as packaging machines, labeling systems, printing presses, textile machinery, and automated assembly lines. It can be used for feed axes, positioning tables, winding drives, and tool changers. Its 1.3 Nm rating makes it appropriate for medium-load axes, while the 3000 rpm speed supports fast positioning. The motor is also suitable for applications requiring frequent starts and stops, where peak torque and thermal capacity are important.

Installation and Commissioning

Correct installation begins with mechanical alignment and secure mounting. The motor cables should be shielded and connected according to the drive manufacturer instructions. The feedback cable should be routed separately from power cables to reduce interference. During commissioning, motor parameters such as pole count, rated current, torque constant, and feedback resolution must be entered into the servo drive. Autotuning functions can help optimize control loop gains, but manual adjustment may be required for demanding applications.

Maintenance and Reliability

The motor requires minimal maintenance under normal operating conditions. Bearings are the primary wear component, and their condition can be monitored through vibration and temperature measurements. The motor should be kept clean and free from excessive dust or moisture. If the motor is used in harsh environments, proper sealing and protection should be verified. Regular inspection of cables and connectors helps prevent intermittent faults.

Selection Considerations

When selecting the LST-074-2-30-560/T1, users should verify the required torque and speed, the available bus voltage, the feedback type, and the mechanical interface. The motor should be matched to the load inertia for stable control. The drive must be capable of supplying the required continuous and peak current. In applications with high radial or axial loads, an appropriate bearing or gearbox arrangement should be used.

Conclusion

The LTi DRiVES LST-074-2-30-560/T1 is a compact and efficient servo motor that provides 1.3 Nm of rated torque at 3000 rpm with 560 VDC bus compatibility. Its design supports precise motion control, high dynamic response, and reliable operation in industrial environments. With correct selection and commissioning, it contributes to productive and accurate machine performance.