December 1, 2011—
With its decentralized IndraDrive Mi servo drive, Rexroth paves the way for speedy engineering, the simple realization of modular machine concepts, and effective safety concepts. Using a Multi-Ethernet interface, the IndraDrive Mi simplifies the realization of the most varied automation structures with one single type of hardware. In addition, it also allows for Ethernet components to be connected directly to the drives, thereby further reducing the amount of wiring needed. The certified safety function STO (Safe Torque Off), which is integrated into the drive, increases the degree of freedom for modularization in machine engineering.
The Multi-Ethernet interface of the IndraDrive Mi reduces the configuration of the communication protocols SERCOS III, PROFINET IO (RT), EtherNet/IP and EtherCAT to a mere adjusting of software settings. As a result, OEMs are able to implement the different automation structures requested by end users with one single type of hardware. This makes logistics and spare parts management significantly easier.
The decentralized servo drives reduce the amount of wiring needed by up to 85 percent compared to conventional solutions. By enabling additional Ethernet and peripheral devices to be connected directly to the drive, these components no longer need to be wired all the way into the control cabinet, which brings installation costs down. Users can now connect Rexroth's pneumatic and hydraulic actuators to the IndraDrive Mi via SERCOS III and access these actuators via the control system.
The integrated "Safety On Board" function Safe Torque Off (STO) eliminates hardware and reduces the need for wiring. Axes equipped with STO ensure operational safety without requiring an additional control system. When the STO function is activated, the drive will interrupt the current to the connected motor within mere milliseconds. This safely prevents a stopped engine from being restarted accidentally by the drive. The STO function in the IndraDrive Mi is certified Cat 4 PL e according to EN ISO 13849-1 and SIL 3 according to EN 62061.
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