Article number |
6ES7221-1BF32-0XB0 |
6ES7221-1BH32-0XB0 |
|
Digital Input SM 1221, 8DI, 24V DC |
Digital Input SM 1221, 16DI, 24V DC |
General information |
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|
Product type designation |
SM 1221, DI 8x24 V DC |
SM 1221, DI 16x24 V DC |
Supply voltage |
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|
Rated value (DC) |
24 V |
24 V |
permissible range, lower limit (DC) |
20.4 V |
20.4 V |
permissible range, upper limit (DC) |
28.8 V |
28.8 V |
Input current |
|
|
from backplane bus 5 V DC, max. |
105 mA |
130 mA |
Digital inputs |
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|
● from load voltage L+ (without load), max. |
4 mA; per channel |
4 mA; per channel |
output voltage / header |
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|
supply voltage of the transmitters / header |
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|
● product function / supply voltage for transmitters |
Yes |
Yes |
Power loss |
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|
Power loss, typ. |
1.5 W |
2.5 W |
Digital inputs |
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|
Number of digital inputs |
8 |
16 |
● in groups of |
2 |
4 |
Input characteristic curve in accordance with IEC 61131, type 1 |
Yes |
Yes |
Number of simultaneously controllable inputs |
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|
all mounting positions |
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|
— up to 40 °C, max. |
8 |
16 |
horizontal installation |
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— up to 40 °C, max. |
8 |
16 |
— up to 50 °C, max. |
8 |
16 |
vertical installation |
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|
— up to 40 °C, max. |
8 |
16 |
Input voltage |
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|
● Rated value (DC) |
24 V |
24 V |
● for signal "0" |
5 V DC at 1 mA |
5 V DC at 1 mA |
● for signal "1" |
15 V DC at 2.5 mA |
15 V DC at 2.5 mA |
Input current |
|
|
● for signal "0", max. (permissible quiescent current) |
1 mA |
1 mA |
● for signal "1", min. |
2.5 mA |
2.5 mA |
● for signal "1", typ. |
4 mA |
4 mA |
Input delay (for rated value of input voltage) |
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|
for standard inputs |
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|
— 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 |
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 |
Yes |
Cable length |
|
|
● shielded, max. |
500 m |
500 m |
● unshielded, max. |
300 m |
300 m |
Interrupts/diagnostics/status information |
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|
Alarms |
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● Diagnostic alarm |
Yes |
Yes |
Diagnostics indication LED |
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|
● for status of the inputs |
Yes |
Yes |
Potential separation |
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|
Potential separation digital inputs |
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|
● between the channels, in groups of |
2 |
4 |
Degree and class of protection |
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|
IP degree of protection |
IP20 |
IP20 |