Siemens 3TK2810-1 System Manual page 72

Safety relays, safety-related speed monitor, industrial controls

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Circuit diagrams

10.1 Circuit diagram

Application examples

Speed and standstill monitoring using a suitable encoder, automatic mode; in the case of

manual start, on pushbutton at T4/ST; in the case of autostart, jumper at T4/ST; suitable up

to SIL 3, Performance Level e, SK 4 (a requirement for SK 4 is that in the case of longer

standstill times, a forced dormant error detection procedure t < 24 hrs is carried out).

Two-channel speed and standstill monitoring using two NPN or PNP proximity switches,

automatic mode; protective door monitoring active; in the case of manual start, on

pushbutton at T4/ST; in the case of autostart, jumper at T4/ST; suitable up to SIL 3,

Performance Level e, SK 4 (a requirement for SK 4 is that in the case of longer standstill

times, a forced dormant error detection procedure t < 24 hrs is carried out).

Please read the note "Connecting the initiators" in chapter "Product-specific safety

information (Page 9)".

3TK2810-1 safety-related speed monitor

System Manual, 01/2011, 926246402000 DS 02

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