Engel Elektroantriebe will be presenting the integrated drive systems of its HFI series in Nuremberg. This latest series in the company's range consists of synchronous drives in four sizes with integrated control electronics, which are available in flange dimensions of 47, 55, 65 and 75 millimetres and in two system lengths per size. The series covers rated outputs of up to 600 watts with a maximum rated torque of 1.8 newton meters. Double the nominal torque is available as peak torque for short periods during acceleration phases.

Flexible servo technology solution
The compact synchronous drives are based on the manufacturer's HBI series. Compared to their predecessors, they offer ten to 15 percent more power or torque, depending on their size. The HFIs are compatible with numerous industrial fieldbus systems and can be integrated into networks such as Ethercat, Canopen, Profinet or EtherNet/IP.

The STO (safe torque off) safety function offers an adequate solution for safety-relevant applications in which hazards and risks for the operator of a machine or system must be safely excluded. This optional electronic safety function, which can be fitted to all HFIs, has two redundant channels and fulfils SIL-3 in accordance with DIN EN 61508 and achieves performance level [e] Cat 3 in accordance with DIN EN 13849. When the safety function is requested, the drive is quickly - i.e. within just 20 milliseconds - de-energized in an uncontrolled manner so that no more torque can be safely generated and therefore no more dangerous movements can be carried out by the drive or the corresponding device.

The inputs of the STO are also tolerant to test pulses from OSSD outputs. This means that safety devices with corresponding diagnostic functions can be connected and operated directly and without the use of conventional electromechanical safety switching devices.

A potential-free status output reports the status of the safety function and also allows cyclical function testing of the two input channels. The optional STO safety module simplifies the implementation of necessary safety requirements. It makes the use of conventional electromechanical switching devices superfluous, reduces costs and also creates more free space in the control cabinet. as

Hall 1, Stand 535