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SIMATIC S7-400 SM 421, DI 32x120 V UC
SKU: 6ES7421-1EL00-0AA0
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Short Description
Description:
SIMATIC S7-400, digital input SM 421, isolated 32 DI, 120 V DC/AC.
Input current:
From backplane bus 5 V DC, max.: 200 mA.
Power loss:
Power loss, typ.: 6.5 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: AC/DC.
Rated value (UC): 120 V; 47 ... 63 Hz.
for signal "0": 0 to 20 V UC.
for signal "1": 79 to 132 V AC; 80 to 132 V DC.
Input current:
for signal "0", min.: 0 mA.
for signal "0", max. (permissible quiescent current): 1 mA.
for signal "1", typ.: 2 mA; 2 to 5 mA.
Input delay (for rated value of input voltage):
for standard inputs:
At "0" to "1", min.: 5 ms.
At "0" to "1", max.: 25 ms; 10 / 20 ms.
At "1" to "0", min.: 5 ms.
At "1" to "0", max.: 25 µs.
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 mA
Interrupts/diagnostics/status information:
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: 8.
Between the channels and backplane bus: Yes.
Isolation:
Isolation tested with: 1500 V AC.
Dimensions:
Width: 25 mm.
Height: 290 mm.
Depth: 210 mm.
Weights:
Weight, approx.: 600 g.