VLT® FlexMotion™ Multiaxis Servo Drive MSD 520

VLT® Multiaxis Servo Drive MSD 520 is a modular multi-axis servo system designed for high-performance motion applications requiring scalability and flexibility. The system consists of the VLT® Power Supply Module PSM 520, VLT® Servo Drive Modules SDM 521 for single axis and SDM 522 for double axis, enabling compact and efficient machine architectures based on a shared DC-link concept. The platform supports a wide range of rotary and linear motor technologies as well as extensive feedback options.

The modular architecture allows seamless integration with VLT® Integrated Servo Drive ISD® 520 and VLT® Decentral Servo Drive DSD 520 solutions, supporting centralized, decentralized and hybrid machine concepts within a common motion platform.

Integrated motion control enables the drive to execute motion sequences autonomously, reducing the workload of the central PLC and simplifying machine architecture. In addition, optional VLT® FlexSafety™ provides advanced functional safety functions, including Safe Brake Control (SBC) and Safe Brake Test (SBT), enabling safety-certified control and monitoring of motor holding brakes in accordance with IEC 61800-5-2.

MSD 520 is well suited for demanding applications such as packaging, labeling, filling, robotics, material handling and other multi-axis automation systems requiring precise synchronization, high dynamic performance and scalable machine architectures.

Main characteristics

• DC-link voltage: 565 to 680 V DC (±10%)
• Supply power range: up to 60 kW nominal system output
• Servo module ratings: SDM 521 single-axis 2.5..40 A, SDM 522 dual-axis 2 x 2.5..10 A
• Protection class: IP20
• Ambient temperature: 5-40 °C, max 55 °C with derating
• EMC according to 61800-3: C3, C2 with external filter
• Motor feedback types: BiSS, BiSS-C, SSI, EnDat 2.x, EnDat 3, HIPERFACE, HIPERFACE DSL, Resolver, SinCos, TTL and Open Loop
• Safety functions: STO, SS1, SS2, SOS, SLA, SAR, SLS, DLS, SSR, SLP, SLI, SDI, SCA, SSM, SBC, SBT