Siemens Sirius 3TK2826 - Page 45

External circuitry
10.2 Typical circuits
3TK2826 safety relay
Manual, 08/2007, GWA NEB 926 1579-02 DS 02
45
Table 10-9 Circuit example 7: Sensors with electronic outputs without cross-circuit detection, with
monitored start
• Without cross-circuit detection
• 2 NC contacts
• 2-channel
• Monitored start
• 3TK2826-.BB4.
DIP switch
1 2 3 4 5 6 7 8
0 1 1 — 1 — — —
Category in accordance with DIN
EN ISO 13849-1
3
START
9'&
Y12 T1 Y33 T3 1
Y22 T2 Y34
A1
A2
M
K
1
K
n
.
.
.
Safety Integrity Level (SIL),
in accordance with IEC 61508
2
Table 10-10 Circuit example 8: Sensors with electronic outputs, without cross-circuit detection, with
autostart
• 2 NC contacts
• Without cross-circuit detection
• 2-channel
• Autostart
• 3TK2826-.BB4.
DIP switch
1 2 3 4 5 6 7 8
0 1 1 — 0 0 — —
Category in accordance with DIN
EN ISO 13849-1
3
9'&
Y12 T1 Y33 T3 1
Y22 T2 Y34
A2
M
A1
K
1
K
n
.
.
.
Safety Integrity Level (SIL),
in accordance with IEC 61508
2