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Digital Input SM 1221, 8DI, 24V DC (6ES72211BF320XB0)

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SIMATIC S7-1200, Digital input SM 1221, 8 DI, 24 V DC, Sink/Source

Description

General information
Product type designation SM 1221, DI 8×24 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
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
Ecological footprint
● environmental product declaration Yes
Global warming potential
— global warming potential, (total) [CO2 eq] 123 kg
— global warming potential, (during production) [CO2 eq] 12.1 kg
— global warming potential, (during operation) [CO2 eq] 111 kg
— global warming potential, (after end of life cycle) [CO2 eq] -0.434 kg
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
Classifications
Version Classification
eClass 14 27-24-22-04
eClass 12 27-24-22-04
eClass 9.1 27-24-22-04
eClass 9 27-24-22-04
eClass 8 27-24-22-04
eClass 7.1 27-24-22-04
eClass 6 27-24-22-04
ETIM 9 EC001419
ETIM 8 EC001419
ETIM 7 EC001419
IDEA 4 3566
UNSPSC 15 32-15-17-05
Approvals / Certificates

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Digital Input SM 1221, 8DI, 24V DC (6ES72211BF320XB0)