LTi DRiVES DSM4-05.4-20R82-400 Servo Motor

The LTi DRiVES DSM4-05.4-20R82-400 is a permanent magnet synchronous servo motor designed for precise and dynamic motion control. It is part of the DSM4 series and is suitable for industrial applications that require accurate speed, position, and torque regulation. The motor is constructed for continuous operation and can be matched with compatible LTi DRiVES servo controllers.

Series and Model Identification

The DSM4 series is a family of servo motors used in industrial automation. The model designation DSM4-05.4-20R82-400 includes information about the frame size, winding, feedback, and voltage class. The 400 indicates compatibility with a 400 V class drive system. The motor is designed for flange mounting and can be coupled to gearboxes, pulleys, and other machine elements.

Motor Design and Construction

The motor uses rare earth permanent magnets in the rotor. This design eliminates the need for rotor excitation and contributes to high efficiency and high torque density. The stator winding is designed for low losses and good thermal behavior. The housing provides mechanical protection and effective heat dissipation. The shaft and flange are manufactured for stable mechanical integration.

Electrical Characteristics

The DSM4-05.4-20R82-400 is designed for operation with a servo drive that provides field oriented control. The motor can deliver high peak torque for short periods, enabling fast acceleration and deceleration. The rated speed and torque depend on the winding and the drive settings. The 400 V class allows the motor to be used in systems with a rectified three phase supply.

Feedback and Control Compatibility

The motor is typically equipped with a feedback device such as a resolver or an encoder. The feedback system provides rotor position and speed information to the servo drive. This information is essential for accurate commutation and precise motion control. The feedback interface must match the drive configuration. Motor temperature sensors can be connected to protect against overheating.

Thermal Management

Thermal performance is important for servo motor selection. The DSM4 motor 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 cooling may be considered.

Mechanical Integration

The motor shaft and flange dimensions are designed for standard mechanical interfaces. 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. Power and feedback connectors are positioned for convenient cable routing.

Dynamic Performance

High dynamic response is achieved through 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.

Applications

The DSM4-05.4-20R82-400 is suitable for packaging machines, printing equipment, textile machinery, handling systems, and automated assembly lines. It can be used for feed axes, positioning tables, winding drives, and tool changers. Its compact size makes it suitable for machines with limited installation space.

Installation and Commissioning

Correct installation begins with mechanical alignment and secure mounting. 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.

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. Regular inspection of cables and connectors helps prevent intermittent faults.

Selection Considerations

When selecting the DSM4-05.4-20R82-400, 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.

Conclusion

The LTi DRiVES DSM4-05.4-20R82-400 is a compact and efficient servo motor for industrial motion control. Its design supports precise positioning, high dynamic response, and reliable operation. With correct selection and commissioning, it contributes to productive and accurate machine performance.