VLT® Multiaxis Servo Drive MSD 520

Fast and fail-safe installation

Enjoy easy mounting and failsafe installation thanks to a unique Click and Lock concept where DC-link and control voltage supply are integrated in the backplate of each module. Depending on the machine architecture, you can use the MSD 520 as a standalone central concept or in a mixed system together with the VLT® Integrated Servo Drive ISD® 520 and VLT® Decentral Servo Drive DSD 520. Extensions or adjustments to the machine are easy to implement - just add or swap modules accordingly.

Choose your preferred protocol

Open connectivity to common real-time Ethernet systems, such as EtherCAT, POWERLINK and PROFINET, and IEC 61131-3-based programming and PLCopen certified Motion libraries makes the system even more flexible and easy to integrate into various engineering environments.

Modules of the MSD 520

VLT® Power Supply Module PSM 520

The PSM 520   generates a 565-680 DC-link voltage and is available in 3 ratings: 10, 20 or 30 kW and 200% overload capability. Furthermore, two Power Supply Modules can be used in parallel to achieve a nominal output up to 60 kW.

The Decentral Access Module (DAM) factory option inside the PSM 520 easily supplies and communicates with the VLT® Integrated Servo Drive ISD® 520 and VLT® Decentral Servo Drive DSD 520 through a hybrid feed-in cable. This enables great flexibility and the freedom to design the servo system according to application needs, whilst supporting modular machine architectures.

VLT® Servo Drive Module SDM 521 or SDM 522

The SDM 521 is a single axis servo drive available in 2 enclosure sizes and 5 power ratings. The SDM 522 is a double axis servo drive available in the smallest enclosure size and 3 power ratings. A wide range of feedback options and sensorless control allows the selection of the preferred PM or ASM motor. Furthermore, the drive modules are equipped with digital I/Os, relay outputs and a Safe Torque Off (STO).

The motion control is integrated in the drives to run the motion sequence independently to release the central PLC. The master can be programmed via IEC 61131-3.

VLT® Expansion Module EXM 520

To support a modular machine architecture the EXM 520 can be used to split the MSD 510 system into 2 cabinets. The maximum permitted distance between the cabinets (cable length) is 5 meters.

Supply and DC-link voltage

Nominal input voltage

3 x 400 - 480 V AC ±10%

DC link voltage

565 - 680 V DC ±10%

Refer to the Selection Guide to find additional technical data, like power and current ratings for SDM 521 and SDM 522