Article number | 6ES7221-1BF32-0XB0 | 6ES7221-1BH32-0XB0 |
| Digital Input SM 1221, 8DI, 24V DC | Digital Input SM 1221, 16DI, 24V DC |
General information |
|
|
Product type designation | SM 1221, DI 8×24 V DC | SM 1221, DI 16×24 V DC |
Supply voltage |
|
|
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 |
|
|
● from load voltage L+ (without load), max. | 4 mA; per channel | 4 mA; per channel |
Output voltage |
|
|
Power supply to the transmitters |
|
|
● present | Yes | Yes |
Power loss |
|
|
Power loss, typ. | 1.5 W | 2.5 W |
Digital inputs |
|
|
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 |
|
|
all mounting positions |
|
|
— up to 40 °C, max. | 8 | 16 |
horizontal installation |
|
|
— up to 40 °C, max. | 8 | 16 |
— up to 50 °C, max. | 8 | 16 |
vertical installation |
|
|
— up to 40 °C, max. | 8 | 16 |
Input voltage |
|
|
● 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) |
|
|
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 | 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 |
|
|
Alarms |
|
|
● Diagnostic alarm | Yes | Yes |
Diagnostics indication LED |
|
|
● for status of the inputs | Yes | Yes |
Potential separation |
|
|
Potential separation digital inputs |
|
|
● between the channels, in groups of | 2 | 4 |
Degree and class of protection |
|
|
IP degree of protection | IP20 | IP20 |
Standards, approvals, certificates |
|
|
CE mark | Yes | Yes |
CSA approval | Yes | Yes |
UL approval | Yes | Yes |
cULus | Yes | Yes |
FM approval | Yes | Yes |
RCM (formerly C-TICK) | Yes | Yes |
KC approval | Yes | Yes |
Marine approval | Yes | Yes |
Ambient conditions |
|
|
Free fall |
|
|
● Fall height, max. | 0.3 m; five times, in product package | 0.3 m; five times, in product package |
Ambient temperature during operation |
|
|
● min. | -20 °C | -20 °C |
● max. | 60 °C | 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 | 5°C to 55°C, 3°C / minute |
Ambient temperature during storage/transportation |
|
|
● min. | -40 °C | -40 °C |
● max. | 70 °C | 70 °C |
Air pressure acc. to IEC 60068-2-13 |
|
|
● Storage/transport, min. | 660 hPa | 660 hPa |
● Storage/transport, max. | 1 080 hPa | 1 080 hPa |
Relative humidity |
|
|
● Operation at 25 ℃ without condensation, max. | 95 % | 95 % |
Connection method |
|
|
required front connector | Yes | Yes |
Mechanics/material |
|
|
Enclosure material (front) |
|
|
● Plastic | Yes | Yes |
Dimensions |
|
|
Width | 45 mm | 45 mm |
Height | 100 mm | 100 mm |
Depth | 75 mm | 75 mm |
Weights |
|
|
Weight, approx. | 170 g | 210 g |
