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Safety-related equipment

If a safety gate has dual-channel locking incl. on-site evaluation, is it necessary to conduct another on-site evaluation in the control cabinet?

Two-channel lines that are not routed within a protected electrical mounting area must be monitored in accordance with the desired performance level (PL). This can be achieved through higher level test pulses or +/- switching circuits, depending on which safety relay is used.

Dual-channel routes can also be monitored for feasibility.


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