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Servo drive

Choice of encoders

SEW-Eurodrive (Germany) has presented the ELVCD low-voltage servo drive. It was developed for mobile materials handling technology and stationary applications with decentralized drives.

CMP ELVCD is supplied with 24-VDC electronics supply and with 48-VDC power supply (Photo: SEW-Eurodrives)

THE CMP ELVCD (EXTRA LOW VOLTAGE COMPACT DRIVE) electronic motor is based on the CMP50M servo motor series in the 3000-revolutions-per-minute speed class. Users can choose between two types of encoder, the AK0H multi-turn encoder and the RH1M single-turn encoder. The drive can also be equipped with a brake. A braking resistor is already integrated. Hardware limit switches can also be connected.

Various connection topologies are supported. The standard cable variant encompasses a 24-V electronic supply and 48-V power supply plus a CAN network cable for communication. There is also a variant with a four-core hybrid cable that accommodates the power and electronics supplies and a separate CAN network. Both variants use an M12 distributor box for I/O connection of the limit switches. The drives come in dimensions between 189,5 mm x 85 mm x 150 mm and 256 mm x 85 mm x 150 mm with an IP65 degree of protection.

Users can select various modes for reference travel. Startup and configuration are performed via the Multi Motion / Drive Startup program module. This offers a software platform for programmable Movi-PLC motion and logic controllers that can be used to develop coordinated motion sequences in multi-axis applications. The drive is always combined with the Movi-PLC controller. All control tasks are determined centrally and transferred to the drives synchronously.

Shuttles are just one example of the possible applications in mobile materials handling technology. The drive is also suitable for load handling devices in storage/retrieval systems, which often have only restricted installation space. The CMP ELVCD is also used as a drive for telescopes and conveyor belts for the automation of entire load handling devices. The drives are controlled via a moving control cabinet or via a completely decentralized unit.

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