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Difference between Safety Relay and Safety Relay Unit

FAQ No. FAQ02279

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Question

What is the difference between the Safety Relay and the Safety Relay Unit?

Answer

Of course, safety circuits can be designed by using the Safety Relay. However, a reciprocal check of redundant circuits is required.

Meanwhile, the Safety Relay Unit is a block of circuits which combines the Safety Relay with other components in order for the safety circuit to be easily designed.