Data sheet
6ES7221-1BH32-0XB0
SIMATIC S7-1200, DIGITAL INPUT SM 1221, 16 DI, 24VDC,
SINK/SOURCE INPUT
Supply voltage
Rated value (DC)
● 24 V DC
Yes
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.
130 mA
Digital inputs
● from load voltage L+ (without load), max.
4 mA; per channel
Output voltage
Power supply to the transmitters
● present
Yes
Power loss
Power loss, typ.
2.5 W
Digital inputs
Number of digital inputs
● in groups of
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4
25.01.2016
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© Copyright Siemens AG
Input characteristic curve in accordance with IEC
61131, type 1
Yes
Number of simultaneously controllable inputs
all mounting positions
— up to 40 °C, max.
16
horizontal installation
— up to 40 °C, max.
16
— up to 50 °C, max.
16
vertical installation
— up to 40 °C, max.
16
Input voltage
● Type of input voltage
DC
● Rated value (DC)
24 V
● for signal "0"
5 V DC at 1 mA
● for signal "1"
15 VDC 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
Yes
Alarms
● Diagnostic alarm
Yes
Diagnostics indication LED
● for status of the inputs
Yes
● for maintenance
Yes
● Status indicator digital input (green)
Yes
Potential separation
Potential separation digital inputs
● between the channels, in groups of
4
Degree and class of protection
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Changes preserved
© Copyright Siemens AG
Degree of protection acc. to EN 60529
● IP20
Yes
Standards, approvals, certificates
CE mark
Yes
CSA approval
Yes
UL approval
Yes
cULus
Yes
FM approval
Yes
RCM (formerly C-TICK)
Yes
Marine approval
● Marine approval
Yes
Ambient conditions
Free fall
● Fall height, max.
0.3 m; five times, in dispatch package
Ambient temperature during operation
● min.
-20 °C
● max.
60 °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
● permissible range (without condensation) at 25
°C
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.
210 g
last modified:
22.01.2016
6ES7221-1BH32-0XB0
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25.01.2016
Changes preserved
© Copyright Siemens AG
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