National Engineering Company (NENCO)offers Brake Control, ROBA-SBCPLUS. Mayr Power Ttransmission presents a new, reliable Brake Control for their proven "ROBA-stop" safety brake construction series. The "ROBA-SBCplus" brake control, developed together with the safety experts Pilz, is technically superior in every respect in terms of safety contactor circuits. The prototype module inspected by the TÜV (Technical Inspectorate) can be deployed up to the highest Performance Level PLe and SIL 3. In order to enable safety brakes to contribute towards risk reduction in machines and systems, they require a reliable control. Vertical axes, for example, rank among the particularly hazardous machine parts through which people can be severely injured. A similar hazard potential arises from stage equipment, if actors are performing beneath suspended loads. In order to protect people from all hazards in such situations, the remaining functional risks in accordance with safety standard DIN EN ISO 13849-1 must first be assessed, and subsequently suitable measures for the reduction of risks must be taken. As a mechanical component, the brake falls under the category of functional safety in accordance with this standard. The safety brakes from Mayr power transmission function according to the "fail-safe" principle and are closed in a de-energised state. The brake control has the task of reliably interrupting the current in the magnetic coil when switching the brake off. The brake control module works using wear-free electronic semi-conductors, and therefore achieves practically unlimited switching frequency and switching reliability. The prototype module inspected by the TÜV Süd has a reliable internal construction and can be deployed up to Performance Level PLe and Safety Integrity Level (SIL) 3. The ROBA-SCBplus can be used in the most diverse safety-critical applications thanks to the simple parameterability, if an input voltage of 24 to 48 VI is available on the power circuit.
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