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Safety Measures
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Identification of Risk Sources
Three Key Points for Protection Against Mechanical Hazards
Grounding Instructions by Output Form (NPN/PNP)
Basic Safety Circuit Concepts
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Calculation Example of Safe Distance
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Basic Safety Circuit Concepts
When designing a safety circuit, the following points need to be taken into consideration.
What happens if the circuit is disconnected?
What happens if the circuit is disconnected and grounded?
What happens if it short-circuits?
* Depending on the circuit, there are some failure modes which need to be taken into consideration.
For example, below is a basic circuit which satisfies all three points above.

Correct Circuit
Circuit diagram of a correct safety circuit


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