| 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 8x24 V DC |
SM 1221, DI 16x24 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 / header |
|
|
| supply voltage of the transmitters / header |
|
|
| ● product function / supply voltage for transmitters |
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 |