Lenze 8400 Manuel d'utilisateur télécharger pdf (Page 273)

Safety engineering

Important notes

Mission time

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273

EDS84ASC552 EN 9.1

10.2.3 Mission time

The mission time) of the used component has to be observed and complied with. After the

mission time of a component has expired, the component has to be taken out of service

and replaced. Continued operation is not permitted!

The specified mission time starts at the date of manufacture. The date manufacture is

permanently stored in the component and can be read out via t he parameter C00206/6

(see also chapter Diagnostics, identification data).

For the STO safety function of the 8400 device series, no special examination is specified

. Therefore, the mission time cannot be reset via an examination.

The proof test interval is the period after which a proof test) to reveal undetected faults

must be performed.

The proof test is a periodic examination to reveal hidden hazardous failures in a

safety-related system so that - if necessary - a repair can bring the system back to an ”as

new” state or restore it as close as under practical considerations possible to this state

(see DIN EN 61508-4).

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Lenze 8400 Manuel d'utilisateur Page 273