Siemens 3TK2845, Manual

Page: 24 / 68

Functional Information
3TK2845 Multifunction Device Manual
2-12
GWA 4NEB 926 2087-22 DS 01
Terminals: Monitored and automatic start-up, time-delayed
1) Electronic signaling output
Enabling circuit active: Signaling output OFF
Enabling circuit inactive: Signaling output ON
Key-operated switch
operation: Signaling output clocked
(approx. 1.2 Hz)
Cascading
Sensor connection
1
Y64
Y11
Y12
Y21
Y22
Y35
Y34 START button
Y41
Y42
Y51
Y52
Sensor connection
Y65
Key-operated switch
Safety logic
Inp
u
t block
Senso
r
Te
rm
in
al
s
Des
cription
Te
rm
in
al
13
14
24
37
38
52
48
Y72
Y82
Des
cription
Safe
relay output
instantaneous
Safe electronic
output
instantaneous
Safe
relay output
time delayed
Safe
electronic output
time delayed
Electronic
signaling output
1)
(should not be used for
safety-related
applications)
or
or
or
or
or
Feedback circuit
with cross-circuit detection
(not connected)
without cross-circuit detection
(with 24 V DC = terminal A1
connected)
with cross-circuit detection
(not connected)
without cross-circuit detection
(with 24 V DC = terminal A1
connected)
Automatic
start-up
CAS / OS
Monitored
start-up
S
1
Automatic
start-up
S
2
Key-
operated
switch
EC
rel
(S)
EC
el
(S)
EC
rel
(S
td
)
EC
el
(S
td
)
SC
el
(S)