SM 1221 数字量输入模块

发布日期：2017-12-27 10:16:06　　浏览量：

Overview

·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

Area of application

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：

·最佳适应性：

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。

Functions

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。

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)
● 24 V 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
● from load voltage L+ (without load), max.	4 mA	4 mA
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
● Type of input voltage	DC	DC
● Rated ＆#118alue (DC)	24 V	24 V
● for signal "0"	5 V DC at 1 mA	5 V DC at 1 mA
● for signal "1"	15 VDC at 2.5 mA	15 VDC 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 ＆#118alue 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
Digital outputs
Number of digital outputs	0	0
short-circuit protection	No	No
Interrupts/diagnostics/status information
Alarms
● Alarms	Yes	Yes
● Diagnostic alarm	Yes	Yes
Diagnostic messages
● Diagnostic functions	Yes	Yes
● Monitoring the supply voltage	Yes	Yes
Diagnostics indication LED
● for status of the inputs	Yes	Yes
● for maintenance	Yes	Yes
● Status indicator digital input (green)	Yes	Yes
Potential separation
Potential separation digital inputs
● between the channels, in groups of	2	4
Degree and class of protection
Degree of protection acc. to EN 60529
● IP20	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
● Marine approval		Yes
Ambient conditions
Free fall
● Fall height, max.	0.3 m; five times, in dispatch package	0.3 m; five times, in dispatch package
Ambient temperature during operation
● permissible temperature range	-20 °C to +60 °C horizontal mounting, -20 °C to 50 °C vertical mounting, 95% humidity, non-condensing
● min.	-20 °C	-20 °C
● max.	60 °C	60 °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
● permissible range (without condensation) at 25 °C	95 %	95 %
Connection method
required front connector	Yes	Yes
Mechanics/material
Type of housing (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

More information
手册

要下载相关的信息资料，请访问网站：

http://www.siemens.com/simatic/printmaterial

详细产品信息请访问：

https://mall.industry.siemens.com/mall/zh/cn/Catalog/Products/10045685?tree=CatalogTree

SM 1221 数字量输入模块

上一篇：SB 1221 数字量输入模块

下一篇：中央处理单元

产品和服务

公司信息

联系我们