Compact safety relays

PNOZsigma feature housings with the smallest width of 12.5 millimetres. The reset mode, operating mode and time functions can be set via switches, enabling the respective unit to be flexible in its application. This means that different safety functions can be monitored using a single unit type. So there are fewer unit types to keep in stock. The functional setup on safety relays in the PNOZsigma product range is homogenous. The operator elements are standardised on each unit, as too are the terminal designation and position, allowing for a quick allocation. Plug-in terminals and new spring-loaded terminal technology ensure rapid installation. The use of jumpers to expand contacts is said to reduce the amount of wiring involved by up to 20 per cent. A high switching capability of up to 10A plus rapid diagnostics provide high plant availability. Each PNOZsigma has six descriptive LED indicators, providing a uniform display of switch and fault conditions on each unit.

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