Wiring
Operating Manual PSSu E F BSW(-T)
21372-EN-06
28
Connection example
}
Block switching with dual-channel operation and redundant actuator.
}
The ST output module PSSu E S 4DO 0.5 belongs to the output block of the PSSu E F
BSW module.
}
The FS input module for forming the feedback loop (PSSu E F 4DI with test pulses) be-
longs to another supply group, which is not shut down.
}
A maximum of SIL2 of EN IEC 61508 can be achieved.
Connection example for block switching:
11
12
13
14
21
22
23
24
O0
O1
0 V
0 V
0 V
0 V
K2
K1
11
12
13
14
21
22
23
24
I0
I1
I4
T1
T1
T0
L1
K1
K2
M
K1
K2
PSSu E F 4DI
PSSu E S 4DO 05
K4
K3
L1
K3
K4
M
K3
K4
RFK
K(n)
T0
I3
L1
...
K(n)
M
O2
O3
