Data Sheet

Data sheet 6ES7421-1BL01-0AA0
SIMATIC S7-400, digital input SM 421, isolated 32 DI; 24 V DC
Input current
from backplane bus 5 V DC, max. 20mA
Power loss
Power loss, typ. 6W
Digital inputs
Number of digital inputs 32
Number of simultaneously controllable inputs
● Number of simultaneously controllable inputs
32
Input voltage
● Type of input voltage
DC
● Rated value (DC)
24V
● for signal "0"
-30 V DC to +5 V DC
● for signal "1"
13 V DC to 30 V DC
Input current
● for signal "0", max. (permissible quiescent
current)
1.3mA
● for signal "1", typ.
7mA
Input delay (for rated value of input voltage)
6ES7421-1BL01-0AA0 Subject to change without notice
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09/13/2019 © Copyright Siemens