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西門子SM 1221 數(shù)字量輸入模塊
發(fā)布者:zhengyy999  發(fā)布時(shí)間:2018-05-28 15:35:45



SM 1221 數(shù)字量輸入模塊


Overview

  • 為CPU的本機(jī)I/O提供更多的數(shù)字量輸入
  • 用于使控制器靈活地適應(yīng)相關(guān)任務(wù)的要求
  • 用于使用附加輸入對系統(tǒng)進(jìn)行后續(xù)擴(kuò)展

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Area of application

數(shù)字量輸入模塊允許將控制器與過程中的數(shù)字信號連接。

這為用戶提供了下列優(yōu)勢:

  • 最佳適應(yīng)性:
    使用可以根據(jù)需要混合的信號模塊,用戶可以使其控制器準(zhǔn)確地滿足相關(guān)任務(wù)的要求。這可以避免產(chǎn)生不必要的投資??梢允褂脦в?8 個(gè)、16 個(gè)和 32 個(gè)輸入/輸出通道的模塊。
  • 靈活性:
    如果任務(wù)后續(xù)有所擴(kuò)展,可以升級控制器。更新用戶程序非常簡單。

Functions

SM 1221 數(shù)字量輸入信號模塊將過程中的外部數(shù)字信號電平轉(zhuǎn)換為 S7-1200 的內(nèi)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)

  • ● 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

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