Leuze development avoids ‘safety PLCs’

Leuze electronic's new MSI100 and 200 safety controllers offer quick, easy and affordable control for light curtains, safety interlocks, E-STOP buttons, etc. without the complexity of using a safety PLC, without the need for expensive licenses or the need to commit to one manufacturer's complex safety system for everything.

The MSI100 and MSI200 offer high performance and clever features in products which are simple to design with and commission. The MSI 100 programmable safety controller has 20 safe inputs (SIL 3, PLe) and can monitor up to four Category 4 outputs, independent of one another. Its larger brother the modular MSI 200 is expandable to up to 140 safety modules or 44 outputs again to performance level PLe, SIL3, with Cat4 outputs. Design is easy and intuitive using the 'drag and drop' MSIsafesoft software, which uses PLCopen certified function blocks and is available free-of-charge. This software also has an automatic logic test and a built in emulator which allows the program to be simulated on a PC, indeed it enables the MSI100 & 200's to be tested before spending any money. The MSI100 and 200 also offer two clock outputs and in common with the expansion modules they also have LED indicators on all inputs and outputs to help in commissioning. Supporting the safety controllers are the MSI-FB interface modules which enable the MSI100 or MSI200 to transfer diagnostic data across to a PLC over a variety of fieldbus protocols.