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Safe way to switch heavy loads

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article image The new modular safety relay PNOZpower.

PILZ has introduced PNOZpower, a new modular product family of safety relays with high breaking capacity. It consists of the basic PNOZ p1p unit for monitoring emergency stops, safety gates and light curtains in line with IEC204-1 and category 4 of AS4024-1.

Up to five modules can be connected to this basic unit. The PNOZ po3.3p expansion module is available for switching three phase loads such as motors, transformers or power supplies.

An additional expansion device, the PNOZ po3.2p, is designed for switching DC1 and AC1 loads. With the optional mains unit power supply PNOZ pps1p to upgrade machines and systems, it is possible to use ac voltages of 100 or 115 V ac as control voltages.

Safety relays are used as safety control elements in control boxes The current breaking capacity of six to eight amps dc or ac is sufficient for switching off normal driving power.

Up to now it has not been possible to switch off higher capacities directly and without additional contactors. PNOZpower offers new options in this area: the modular construction and scalability of the breaking capacity on the output contacts allows large loads - maximum 40 ac/dc per module - to be switched.

PNOZpower saves on contactors. This means less cabling, saves cabinet space and costs. In addition, PNOZpower includes an integrated diagnostic function to identify the causes of errors, avoiding unnecessary downtime. Pilz Australia 03 9544 6300.

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