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SIMATIC S7-400 SM 421, DI 16x120/230 V UC
SKU: 6ES7421-1FH20-0AA0
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Short Description
Description:
SIMATIC S7-400, digital input SM 421, isolated 16 DI, UC 120/230V.
Inputs comply with IEC1131-2 Type 2.
Input current:
from backplane bus 5 V DC, max.: 80 mA.
Power loss:
Power loss, typ.: 12 W.
Digital inputs:
Number of digital inputs: 16.
Input characteristic according to IEC 61131: Type 2.
Number of simultaneously controllable inputs:
Number of simultaneously controllable inputs: 16.
Input voltage:
Type of input voltage: AC/DC.
Rated value (UC): 230 V; 120/230 V UC (47 ... 63 Hz).
for signal "0": 0 to 40 V AC/ -40 to +40 V DC.
for signal "1": 74 to 264 V AC; 80 to 264 V DC, -80 to -264 V.
Input current:
for signal "0", min.: 0 mA; AC: 0 mA; DC: 0 mA.
for signal "0", max. (permissible quiescent current): 6 mA; AC: 6 mA; DC: 2 mA.
for signal "1", typ.: 10 mA; at 120 V: 10 mA AC, 1.8 mA DC; at 230 V: 14 mA AC, 2 mA DC.
Input delay (for rated value of input voltage):
for standard inputs:
at "0" to "1", max.: 20 ms; AC: 20 ms; DC: 15 ms.
at "1" to "0", max.: 30 ms; AC: 30 ms; DC: 25 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.: 5 mA; AC: 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: Yes.
between the channels, in groups of: 4.
between the channels and backplane bus: Yes.
Isolation:
Isolation tested with: 1 500 V AC.
Dimensions:
Width: 25 mm.
Height: 290 mm.
Depth: 210 mm.
Weights:
Weight, approx.: 650 g.