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SM 1221 數字量輸入模塊
Overview
·為CPU的本機I/O提供更多的數字量輸入
·用于使控制器靈活地適應相關任務的要求
·用于使用附加輸入對系統進行后續擴展
Area of application
數字量輸入模塊允許將控制器與過程中的數字信號連接。
這為用戶提供了下列優勢：
·最佳適應性：
使用可以根據需要混合的信號模塊，用戶可以使其控制器準確地滿足相關任務的要求。這可以避免產生不必要的投資?？梢允褂脦в?8 個、16 個和 32 個輸入/輸出通道的模塊。
·靈活性：
如果任務后續有所擴展，可以升級控制器。更新用戶程序非常簡單。
Functions
SM 1221 數字量輸入信號模塊將過程中的外部數字信號電平轉換為 S7-1200 的內部信號電平。
Technical Specifications
| Order number | 6ES7221-1BF32-0XB0 | 6ES7221-1BH32-0XB0 |
|---|---|---|
| DIGITAL INPUT SM 1221, 8DI, 24V DC | DIGITAL INPUT SM 1221, 16DI, 24V DC | |
| Product type designation | ||
| Supply voltage | ||
| Rated ＆#118alue (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 | 4 mA |
| 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 VDC at 2.5 mA | 15 VDC at 2.5 mA |
| Input current | ||
| 1 mA | 1 mA |
| 2.5 mA | 2.5 mA |
| 4 mA | 4 mA |
| Input delay (for rated ＆#118alue 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 |
| Digital outputs | ||
| Number of digital outputs | 0 | 0 |
| short-circuit protection | No | No |
| Interrupts/diagnostics/status information | ||
| Alarms | ||
| Yes | Yes |
| Yes | Yes |
| Diagnostic messages | ||
| Yes | Yes |
| Yes | Yes |
| Diagnostics indication LED | ||
| Yes | Yes |
| Yes | Yes |
| 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 |
| 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 dispatch package | 0.3 m; five times, in dispatch package |
| Ambient temperature during operation | ||
| -20 °C to +60 °C horizontal mounting, -20 °C to 50 °C vertical mounting, 95% humidity, non-condensing | |
| -20 °C | -20 °C |
| 60 °C | 60 °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 | ||
| Type of housing (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 |
More information
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