PNOZsigma Safety Relays: Big Functionality and Flexibility in a Small Package


PNOZsigma, t he latest addition to Pilz Automation Safety's PNOZ product line, combines especially narrow housing widths with a wide range of safety functions such as emergency stop, safety gate monitoring, and two-hand control. PNOZsigma safety relays also feature selectable operating modes and standardized configuration and setup that save engineering time. "PNOZsigma represents the sum of our experiences in safety technology," says Renate Pilz, Managing Partner of Pilz GmbH & Co. KG. Externally, reduced housing width is the new product's most striking feature. H ousings are as narrow as 12.5 mm—a 50 percent reduction compared with previous units—but lower space requirements in the control cabinet are just the beginning of the system savings possible using PNOZsigma. T he relays are designed for maximum speed and flexibility of application across all phases of a project. System engineering and setup is simplified with a single procedure for all products in the PNOZsigma range. Standardized operator elements, terminal designations and positions further speed setup, while plug-in terminals and new spring-loaded terminal technology cut installation time and expanded contacts reduce wiring by up to 20 percent. One PNOZsigma unit is used for each safety function, but application flexibility is assured by switch-settable reset mode, operating mode and time functions This allows a single unit type to monitor a variety of safety functions, minimizing unit inventory requirements. High switching capability of up to 10A plus rapid diagnostics provide high plant availability, and each unit features six LED indicators that provide a uniform display of switch and fault conditions PNOZsigma conforms to the latest standards and can be used in conjunction with compatible safety components to form an approved, complete solution. Available units include PIT emergency stop pushbuttons, safety switches, and PSEN light curtains/barriers.
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