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Siemens 3TK2845 Manual page 23

Safety relays, multifunction device
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Connections: Monitored and automatic start-up instantaneous
CAS/OS
Automatic
start-up
or
or
or
S
1
Monitored
start-up
or
S
2
or
Automatic
start-up
Key-
operated
switch
1) Electronic signaling output
Enabling circuit active:
Enabling circuit inactive:
Key-operated switch
operation:
3TK2845 Multifunction Device Manual
GWA 4NEB 926 2087-22 DS 01
1
Cascading
Y11
Y12
Sensor connection
Y21
Y22
Y34
START button
with cross-circuit detection
(not connected)
Y35
without cross-circuit detection
(with 24 V DC = terminal A1
connected)
Y41
Y42
Sensor connection
Y51
Y52
with cross-circuit detection
(not connected)
Y65
without cross-circuit detection
(with 24 V DC = terminal A1
connected)
Y72
Key-operated switch
Y82
Y64
Feedback circuit
Signaling output OFF
Signaling output ON
Signaling output clocked
(approx. 1.2 Hz)
Functional Information
Safe
13
EC
relay output
14
instantaneous
EC
Safe electronic
output
24
instantaneous
Safe
EC
33
relay output
34
instantaneous
Safe electronic
EC
output
44
instantaneous
Electronic signaling
1)
output
SC
52
(should not be used for
safety-related
applications)
rel
el
(S)
rel
(S)
el
(S)
el
(S)
2-11

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