Schneider LXM62DD27D21000 Lexium 62 Servo Drive

The Schneider LXM62DD27D21000 is a multi-axis servo drive module from the Lexium 62 range of motion control products. This module is designed to drive brushless AC servo motors in applications requiring high dynamic performance and precise positioning. The LXM62DD27D21000 provides a continuous output current of 27 A and peak current of 54 A (for 2 seconds). It operates from a common DC bus (300-600 V DC) supplied by a Lexium 62 power supply module, enabling shared energy between multiple axes and reducing system power consumption. The drive supports both CANopen (CiA 402) and EtherCAT (CoE) communication protocols, allowing integration into various motion networks. It includes safe torque off (STO) as a standard safety function, certified to SIL3/PL e. The LXM62DD27D21000 is suitable for packaging machines, printing presses, material handling equipment, and robotics.

Technical Specifications

Rated output current: 27 A (continuous). Peak output current: 54 A (up to 2 seconds). DC bus voltage: 300-600 V DC (nominal 540 V DC). Output power (nominal): 7 kW (depending on motor). Switching frequency: 8 kHz. Control modes: position, speed, torque. Communication interfaces: CANopen (DS402, up to 1 Mbit/s) and EtherCAT (CoE, 100 Mbit/s). The drive includes a built-in encoder interface for Hiperface, EnDat, resolver, or TTL incremental encoders. Digital inputs: 2 (24 V DC, sink/source). Digital outputs: 1 (24 V DC, 0.1 A). Safe Torque Off (STO): SIL3 / PL e, two redundant channels. Dimensions: 70 mm (W) × 300 mm (H) × 240 mm (D). Weight: approx. 3.5 kg. Protection rating: IP20. Operating temperature: 0°C to 50°C. Storage: -25°C to 70°C. Humidity: 10-95% non-condensing. The drive includes an integrated fan for forced air cooling.

Key Features

• 27 A continuous output current (54 A peak) for high torque applications

• Common DC bus operation with Lexium 62 power supply modules

• Dual communication: CANopen (DS402) and EtherCAT (CoE)

• Safe Torque Off (STO) certified to SIL3/PL e

• Supports absolute and incremental encoder feedback

• Auto-tuning and adaptive filtering for optimal motor control

• Integrated brake control output for motor holding brake

• Removable screw terminals for power and I/O

• Compact 70 mm width for high-density mounting

• Compatible with Lexium 62 power supplies (LXM62P10, LXM62P18, etc.)

Multi-Axis System Architecture

The Lexium 62 system is a modular, multi-axis servo drive solution. A Lexium 62 power supply module (e.g., LXM62P10) converts AC input to a regulated DC bus. Up to 8 LXM62DD27D21000 drive modules can be connected to the same DC bus, sharing power and reducing overall cabinet size. The drives communicate with a controller (e.g., PacDrive or PLC) via CANopen or EtherCAT. The system supports distributed motion control with coordinated axes for applications such as cam profiling, electronic gearing, and interpolation. The DC bus sharing allows regenerative energy from one axis to be used by another axis, lowering total energy consumption. The drives automatically handle DC bus balancing and provide diagnostic information to the controller.

Communication and Configuration

The LXM62DD27D21000 is configured using Schneider Electric's SoMove software (with the Lexium 62 DTM) or directly via the fieldbus using CiA 402 objects. In EtherCAT mode, the drive operates as a slave with cycle times as low as 1 ms. The drive supports multiple EtherCAT operation modes: cyclic synchronous position (CSP), cyclic synchronous velocity (CSV), and cyclic synchronous torque (CST). In CANopen mode, the drive supports all mandatory CiA 402 control modes. The drive includes a web server for commissioning and diagnostics via Ethernet (if connected to a network with IP). All parameters can be saved in the drive's non-volatile memory. The DTM (Device Type Manager) allows easy integration into Schneider's EcoStruxure Machine Expert software (formerly SoMachine).

Safety Function: Safe Torque Off (STO)

The integrated STO function (Safe Torque Off) removes power from the motor's power stage, preventing torque generation. This function is certified to SIL3 (IEC 61508) and PL e (ISO 13849-1). The STO inputs are two redundant channels (24 V DC) that must be closed for the drive to enable torque. Opening either channel will safely de-energize the motor within the specified reaction time (≤ 10 ms). STO complies with category 3/4 safety circuits when used with appropriate external safety relays. The STO function does not provide electrical isolation; for maintenance, a main contactor must be used.

Applications

The LXM62DD27D21000 is used in multi-axis motion control applications such as packaging machinery (flow wrappers, cartoners), printing presses (web tension, registration), material handling (palletizers, conveyor sorters), robotics (pick-and-place, delta robots), and converting (slitter-rewinders, laminators). Its 27 A rating is suitable for motors up to about 7 kW, covering a wide range of industrial automation needs. The compact 70 mm width allows up to 8 drives in a single cabinet section, reducing space requirements.

Installation and Wiring

Mount the drive on a DIN rail (35 mm) or directly on a backplate using the integrated mounting clips. Connect the DC bus via the busbars (from the power supply module). Connect the motor power (U, V, W) and brake (if equipped) to the screw terminals. Connect the motor encoder feedback cable to the D-sub connector. For STO, wire the two safety inputs (STO_A, STO_B) to a safety relay or emergency stop circuit. For communication, use shielded Cat5e cables for EtherCAT or twisted-pair for CANopen. The drive requires a minimum clearance of 50 mm above and below for airflow. The integrated fan is temperature-controlled; ensure that the intake and exhaust are not obstructed.

Conclusion

The Schneider LXM62DD27D21000 Lexium 62 servo drive provides powerful, high-performance multi-axis control in a compact form factor. With 27 A continuous output, DC bus sharing, dual-protocol communication, and integrated STO, it is a versatile solution for demanding motion control applications in industrial automation.