Device Versions; Fig. 1-1: Device Versions; Fig. 1-3: 3Tk2845-.Bb40 Safety Logistics Stop Category 0 - Siemens Sirius 3TK2845 Manual

1.4

Device Versions

3TK2845 multifunction devices are available in two versions:
1. Stop Category 0: All outputs switch off without delay.
2. Stop Category 0+1: Output I and II switch off without delay,
output III and IV switch off with a time delay.
1.4.1 3TK2845-.BB40 Multifunction Device (Stop Category 0)
Standard operation
Sensor block D is inactive during standard opera-
tion (key-operated switch OFF).
When using a sensor at sensor blocks A to C,
output blocks I to IV switch off safely without
delay.
Service operation
When sensor block D is active during service
operation (key-operated switch ON), sensor block
C is switched simultaneously to the inactive
state. Output blocks III and IV are switched off.
When using a sensor at sensor blocks A and B,
output blocks I and II switch off safely.
A
Cascading
Feedback
B
Sensor
C
Sensor
D
Key-operated
switch

Fig. 1-3: 3TK2845-.BB40 safety logistics Stop Category 0

*
The sensor connected at block D must fulfill the same safety requirements as the
sensors at block C.
3TK2845 Multifunction Device Manual
GWA 4NEB 926 2087-02
&
R
S
ON
1
Product Description
A
B
C
D
A
B
C
D
I
Relay output
w/o delay
II
Electronic output
w/o delay
III
Relay output
&
w/o delay
IV
Electronic output
w/o delay
I
II
III
IV
I
II
III
IV
1-5