西门子SM1221数字量输入模块
西门子SM1221数字量输入模块
西门子SM1221数字量输入模块
概述
为CPU的本机I/O提供更多的数字量输入
用于使控制器灵活地适应相关任务的要求
用于使用附加输入对系统进行后续扩展
应用
数字量输入模块允许将控制器与过程中的数字信号连接。
这为用户提供了下列优势:
适应性:
使用可以根据需要混合的信号模块,用户可以使其控制器准确地满足相关任务的要求。这可以避免产生不必要的投资。可以使用带有 8 个、16 个和 32 个输入/输出通道的模块。灵活性:
如果任务后续有所扩展,可以升级控制器。更新用户程序非常简单。
功能
SM 1221 数字量输入信号模块将过程中的外部数字信号电平转换为 S7-1200 的内部信号电平。
技术规范
Article number | 6ES7221-1BF32-0XB0 | 6ES7221-1BH32-0XB0 |
---|---|---|
DIGITAL INPUT SM 1221, 8DI, 24V DC | DIGITAL INPUT SM 1221, 16DI, 24V DC | |
Supply voltage | ||
Rated value (DC) | ||
| Yes | Yes |
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 | ||
| 4 mA; per channel | 4 mA; per channel |
Output voltage | ||
Power supply to the transmitters | ||
| Yes | Yes |
Power loss | ||
Power loss, typ. | 1.5 W | 2.5 W |
Digital inputs | ||
Number of digital inputs | 8 | 16 |
| 2 | 4 |
Input characteristic curve in accordance with IEC 61131, type 1 | Yes | Yes |
Number of simultaneously controllable inputs | ||
all mounting positions | ||
| 8 | 16 |
horizontal installation | ||
| 8 | 16 |
| 8 | 16 |
vertical installation | ||
| 8 | 16 |
Input voltage | ||
| DC | DC |
| 24 V | 24 V |
| 5 V DC at 1 mA | 5 V DC at 1 mA |
| 15 V DC at 2.5 mA | 15 V DC at 2.5 mA |
Input current | ||
| 1 mA | 1 mA |
| 2.5 mA | 2.5 mA |
| 4 mA | 4 mA |
Input delay (for rated value of input voltage) | ||
for standard inputs | ||
| 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 | ||
| Yes | Yes |
Cable length | ||
| 500 m | 500 m |
| 300 m | 300 m |
Interrupts/diagnostics/status information | ||
Alarms | ||
| Yes | Yes |
Diagnostics indication LED | ||
| Yes | Yes |
Potential separation | ||
Potential separation digital inputs | ||
| 2 | 4 |
Degree and class of protection | ||
Degree of protection acc. to EN 60529 | ||
| Yes | Yes |
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 |
Marine approval | Yes | |
Ambient conditions | ||
Free fall | ||
| 0.3 m; five times, in product package | 0.3 m; five times, in product package |
Ambient temperature during operation | ||
| -20 °C | -20 °C |
| 60 °C | 60 °C |
| -20 °C | |
| 60 °C | |
| -20 °C | |
| 50 °C | |
| 5°C to 55°C, 3°C / minute | 5°C to 55°C, 3°C / minute |
Ambient temperature during storage/transportation | ||
| -40 °C | -40 °C |
| 70 °C | 70 °C |
Air pressure acc. to IEC 60068-2-13 | ||
| 660 hPa | 660 hPa |
| 1 080 hPa | 1 080 hPa |
Relative humidity | ||
| 95 % | 95 % |
Connection method | ||
required front connector | Yes | Yes |
Mechanics/material | ||
Enclosure material (front) | ||
| 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 |