Connection examples for redundant I/Os
E.24 SM 422; DO 32 x DC 24 V/0.5 A, 6ES7 422–7BL00–0AB0
S7-400H
484 System Manual, 03/2012, A5E00267695-11
E.24 SM 422; DO 32 x DC 24 V/0.5 A, 6ES7 422–7BL00–0AB0
The diagram below shows the connection of an actuator to two SM 422; DO 32 x 24 V/0.5 A.
The actuator is connected to channel 0. Suitable diodes are, for example, those of the series
1N4003 ... 1N4007, or any other diode with U
_r
>=200 V and I_
F
>= 1 A
R
R
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9
HJ1
HJ1
Figure E-24 Example of an interconnection with SM 422; DO 32 x DC 24 V/0.5 A
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