Siemens Simatic M7-400 Manual de usuario Pagina 175

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Digital Modules
4-53
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
4.14 Digital Input Module SM 421; DI 16 120/230 VUC;
(6ES7421-1FH20-0AA0)
Characteristics
The SM 421; DI 16 120/230 VUC is characterized by the following features:
16 inputs, isolated in groups of 4
Rated input voltage 120/230 VUC
Input characteristic curve to IEC 61131; type 2
Suitable for switches and two-wire proximity switches (BEROs)
The status LEDs indicate the process status.
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