Phoenix Contact PSR-CT Series, Operating Instructions Manual, Page: 50 / 69

PSR-CT
50 / 69
PHOENIX CONTACT 108366_en_01
Application drawing
Figure 9-2 Series connection with central reset for all safety switches
Key:
S4
M
K4
K3
L 24V DC
F1
0V
K4
K3
K4
N
K3
14 24 34
33 23 13
M1
( )
S34
( )
A2
S22
( )
S12
( )
A1
PSR-MC40 UB
START
FO1A
FO1B DGN 0V
FI1B
FI1A
PSR-CT-...-SEN-1-8
PSR-CT-C-ACT
S3
UB
START
FO1A
FO1B DGN 0V
FI1B
FI1A
PSR-CT-...-SEN-1-8
PSR-CT-C-ACT
S2
UB
START
FO1A
FO1B DGN 0V
FI1B
FI1A
PSR-CT-...-SEN-1-8
PSR-CT-C-ACT
S1
S1, S2, S3 Safety switches
S4 Central reset button on the first safety switch
FO1A, FO1B Safety outputs
START Start/reset input
UB 24 V DC power supply
DGN Signal output
FI1A, FI1B Safety inputs
A1/A2 Power supply of the safety relay
S34 Start input of the safety relay
S12, S22 Sensor circuit inputs of the safety relay
13/14, 23/24 Enabling current paths of the safety relay
K3, K4 Positively driven contactors
F1 Fuse protection for the power supply