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SIMATIC S7-400, digital input SM 421, isolated 32 DI; 24 V DC
SKU: 6ES7421-1BL01-0AA0
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Short Description
Description:
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.
Input characteristic according to IEC 61131: Type 1.
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):
for standard inputs:
at "0" to "1", min.: 1.2 ms.
at "0" to "1", max.: 4.8 ms.
at "1" to "0", min.: 1.2 ms.
at "1" to "0", max.: 4.8 ms.
Cable length:
shielded, max.: 1 000 m.
unshielded, max.: 600 m.
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Encoder:
Connectable encoders:
2-wire sensor: Yes.
Permissible quiescent current (2-wire sensor), max.: 1.5 mA.
Interrupts/diagnostics/status information:
Diagnostics function: No.
Diagnostics indication LED:
Status indicator digital input (green): Yes.
Potential separation:
Potential separation digital inputs:
Between the channels: No.
Between the channels, in groups of: 32.
Between the channels and backplane bus: Yes.
Isolation:
Isolation tested with: 500 V AC/707 V DC, type test.
Dimensions:
Width: 25 mm.
Height: 290 mm.
Depth: 210 mm.
Weights:
Weight, approx.: 500 g.