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SIMATIC S7-1200 SM 1221, DI 8x24 V DC
SKU: 6ES72211BF320XB0
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Short Description
Description:
SIMATIC S7-1200, digital input SM 1221, 8 DI, 24 VDC, sink/source.
General information:
Product type designation: SM 1221, DI 8x24 V DC.
Supply voltage:
Rated value (DC): 24 V.
permissible range, lower limit (DC): 20.4 V.
permissible range, upper limit (DC): 28.8 V.
Input current:
from backplane bus 5 V DC, max.: 105 mA.
Digital inputs:
from load voltage L+ (without load), max.: 4 mA; per channel.
output voltage / header:
supply voltage of the transmitters / header:
present: Yes.
Power loss:
Power loss, typ.: 1.5 W.
Digital inputs:
Number of digital inputs: 8.
in groups of: 2.
Input characteristic curve in accordance with IEC 61131, type 1: Yes.
Number of simultaneously controllable inputs:
all mounting positions:
up to 40 °C, max.: 8.
horizontal installation:
up to 40 °C, max.: 8.
up to 50 °C, max.: 8.
vertical installation:
up to 40 °C, max.: 8.
Input voltage:
Rated value (DC): 24 V.
for signal "0": 5 V DC at 1 mA.
for signal "1": 15 V DC at 2.5 mA.
Input current:
for signal "0", max. (permissible quiescent current): 1 mA.
for signal "1", min.: 2.5 mA.
for signal "1", typ.: 4 mA.
Input delay (for rated value of input voltage):
for standard inputs:
parameterizable: Yes; 0.2 ms, 0.4 ms, 0.8 ms, 1.6 ms, 3.2 ms, 6.4 ms and 12.8 ms, selectable in groups of four.
for interrupt inputs:
parameterizable: Yes.
Cable length:
shielded, max.: 500 m.
unshielded, max.: 300 m.
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Interrupts/diagnostics/status information:
Alarms:
Diagnostic alarm: Yes.
Diagnostics indication LED:
for status of the inputs: Yes.
Potential separation:
Potential separation digital inputs:
between the channels, in groups of: 2.
Degree and class of protection:
IP degree of protection: IP20.
Standards, approvals, certificates:
CE mark: Yes.
CSA approval: Yes.
UL approval: Yes.
cULus: Yes.
FM approval: Yes.
RCM (formerly C-TICK): Yes.
KC approval: Yes.
Marine approval: Yes.
Ambient conditions:
Free fall:
Fall height, max.: 0.3 m; five times, in product package.
Ambient temperature during operation:
min.: -20 °C.
max.: 60 °C.
horizontal installation, min.: -20 °C.
horizontal installation, max.: 60 °C.
vertical installation, min.: -20 °C.
vertical installation, max.: 50 °C.
permissible temperature change: 5°C to 55°C, 3°C / minute.
Ambient temperature during storage/transportation:
min.: -40 °C.
max.: 70 °C.
Air pressure acc. to IEC 60068-2-13:
Storage/transport, min.: 660 hPa.
Storage/transport, max.: 1 080 hPa.
Relative humidity:
Operation at 25 ℃ without condensation, max.: 95 %.
connection method:
required front connector: Yes.
Mechanics/material:
Enclosure material (front):
Plastic: Yes.
Dimensions:
Width: 45 mm.
Height: 100 mm.
Depth: 75 mm.
Weights:
Weight, approx.: 170 g.