Decentralised two-axis servo drive is sealed to IP67

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Decentralised two-axis servo drive is sealed to IP67Parker Hannifin is launching the Servonet DC double-axis servo drive that features a robust IP67-rated housing for use in challenging environments outside of the cabinet. Target applications include packaging machines and rotary tables where numerous drives and motors are present.

The wiring of the two-axis (5A/10A or 10A/10A) Servonet DC system is fast and easy using the hybrid cable, which transfers the required power, control and communications signalling. Furthermore, all wiring changes are made on the machine via plug-and-socket Faston connectors rather than in the electrical cabinet, while the reduced number of connections also means fewer potential failure points. The system is complemented by an extensive series of rotary and linear servo motors, a power supply and interface module.

Servonet DC has been developed in response to growing demand for high-quality yet cost-effective multi-axis servo applications, where a number of drives are mounted in close proximity on the machine. Servonet DC enables machine builders to take a decentralised approach to motion control, which is executed by means of EtherCAT communication or, optionally, CANopen DS402. In turn, this provides the potential for considerable savings in time and materials, while offering design engineers with the opportunity to reduce machine footprint. Indeed, as the power supply and interface module are the only additional components required in the cabinet, the electronics footprint is up to 70 per cent smaller than for traditional centralised servo systems.

With Servonet DC, machine design becomes very easy thanks to the drive's modularity. Additional axes can be added as required, simply by duplicating schematic drawings from other axes. This not only reduces engineering time and costs, but simplifies the assembly process and accelerates time to market.

A further benefit is that the energy-efficient Servonet DC works on a common DC bus power supply, which means the system can absorb and resupply much of the braking energy to other Servonet DC units rather than dissipating it in the form of heat via external resistors. As a result, resistors can be removed completely in certain applications while, in others, small resistors are sufficient.

Servonet DC systems can be deployed together with motor-integrated drives from Parker's Motornet DC family, as the cabling concept and communication protocol are identical.

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