Siemens Sirius 3TK2826 - Typical Application Circuits

External circuitry
10.2 Typical circuits
3TK2826 safety relay
Manual, 08/2007, GWA NEB 926 1579-02 DS 02
41
10.2 Typical circuits
Typical circuits
Table 10-3 Circuit example 1: 2-channel, with cross-circuit detection, with monitored start
• With cross-circuit detection
• 2 NC contacts
• 2-channel
• Monitored start
• 3TK2826-.BB4. and
• 3TK2826-.CW3.
DIP switch
1 2 3 4 5 6 7 8
1 1 1 — 1 — — —
Category in accordance with
DIN EN ISO 13849-1
4
Y12 T1 Y33 T3 1
Y22 T2 Y34
START
K
1
K
n
.
.
.
Safety Integrity Level (SIL), in
accordance with IEC 61508
3
Table 10-4 Circuit example 2: 2-channel, with cross-circuit detection, with autostart
• With cross-circuit detection
• 2 NC contacts
• 2-channel
• Autostart
• 3TK2826-.BB4. and
• 3TK2826-.CW3.
DIP switch
1 2 3 4 5 6 7 8
1 1 1 — 0 0 — —
Category in accordance with DIN
EN ISO 13849-1
4
Y12 T1 Y33 T3 1
Y22 T2 Y34
K
1
K
n
.
.
.
Safety Integrity Level (SIL),
in accordance with IEC 61508
3