8536IB1904EN-04

Architectural Requirements for Wiring Category 3

Designated architecture for Category 3 is defined in EN ISO 13849–1, 6.2.6.

Designated architecture for Category 3 (EN ISO 13849–1)

im: interconnecting means

L1, L2: logic

c: cross monitoring

m: monitoring

I1, I2: input device, e.g. sensor

O1, O2 : output device, e.g. main contactor

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