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产品名称：	西门子6ES7 321-1CH20-0AA0
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规格：	全新原装
更新日期：	2017年03月01日，有效期：360天
关键字：	西门子CPU模块西门子PLC CPU321
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详情信息

6ES7321-1CH20-0AA0

SIMATIC S7-300，数字量输入M 321，光电隔离，16 DI，DC 48 - 125V，20针

(SIEMENS)上海赞国自动化科技有限公司（西门子分销商）

上海赞国自动化科技有限公司
联系人： 颜工
电话（Tel）：-021-31660601
传真（Fax）：-021-67633621
联系QQ ：983991865

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地址（Add）：上海市松江区思贤路1855弄91号

我公司只销售西门子原装，享受西门子免费一年保修

Overview

数字量输入

用于连接开关和两线制接近开关 (BERO)

注：

SIP extreme 产品基于 SIMATIC 标准产品。此处的内容摘自相关的标准产品。增加了与 SIP extreme 相关的信息

Area of application

数字量输入模板用来实现PLC与数字量过程信号的连接。使用于连接标准开关和两线制接近开关 (BERO)。

Design

数字量输入模块具有下列机械特性：

紧凑型设计：
坚固的塑料机壳里包括：

绿色 LED，用于指示输入的信号状态。

前连接器插座，通过前门保护。

前门上的标签区。

连接器针脚分配，用于在前门内部进行配线。

安装方便：
没有插槽规则；输入地址由插槽决定。
当在 ET 200M 中与有源总线模块一起使用时，可以进行热插拔，而不会有任何反应。

方便用户接线。

具有8、16、32或64通道的模块。

Functions

数字量输入模块将来自过程的外部数字信号电平转换成控制器的内部信号电平（逻辑“0”或“1”）。

多种输入电压，可支持连接不同的控制信号：

24 V DC

48 - 125 V DC

120/230 V AC

除了经济性以及易于处理的特点外，该模块还具有其他特殊功能：

可在等时模式下使用

过程和诊断报警

使用源电流或漏电流

特殊模块还可处理过程工程，例如支持 NAMUR 标准。

Technical Specifications

Order number

6AG1321-1BH02-2AA0

6AG1321-1BL00-2AA0

6AG1321-1CH20-2AA0

6AG1321-1FF01-2AA0

6AG1321-1FF10-7AA0

SIP SM321 16DE/24VDC

SIP SM321 32DE/24VDC

SIP SM 321 16DE/ DC 48-125 V

SIP S7-300 SM321 8DE/120/230VAC

SIP S7-300 SM321 8DI/120/230VAC

Supply voltage

Load voltage L+

● Rated value (DC)

24 V

24 V

48 V

Load voltage L1

● Rated value (AC)

230 V; 120/230V AC

230 V; 120/230 V AC; all load voltages t have the same phase.

Input current

from backplane 5 V DC, max.

10 mA

15 mA

40 mA

29 mA

100 mA

Power loss

Power loss, typ.

3.5 W

6.5 W

4.3 W

4.9 W

4.9 W

Digital inputs

Number of digital inputs

16

32

16

8

8

Input characteristic curve in ordance with IEC 61131, type 1

Yes

Yes

Yes

Yes

Yes

Number of simultanely controllable inputs

horizontal installation

— up to 40 °C, max.

16

32

— up to 50 °C, max.

8

— up to 60 °C, max.

16; 16 @ > 60 °C

16; 12 @ > 60 °C

8; 6 to Ue 146 V

8; up to 70 °C

8; 8 @ > 60 °C

vertical installation

— up to 40 °C, max.

16

8

Input voltage

● Type of input voltage

DC

DC

DC

AC

AC

● Rated value (DC)

24 V

24 V

48 V; 48 V DC to 125 V DC

● Rated value (AC)

230 V; 120/230V AC

120 V; 120/230V AC

● for signal "0"

-30 to +5V

-30 to +5V

-146 V DC to +15 V DC

0 to 40V

0 to 40V

● for signal "1"

13 to 30V

13 to 30V

30 V DC to 146 V DC

79 to 264V

79 to 264V

● Frequency range

47 ... 63 Hz

47 ... 63 Hz

Input current

● for signal "1", typ.

7 mA

7 mA

3.5 mA

6.5 mA; (120 V); 11 mA (230 V)

7.5 mA; (120 V); 17.3 mA (230 V)

Input delay (for rated value of input voltage)

for standard inputs

— parameterizable

No

No

No

No

No

— at "0" to "1", min.

1.2 ms

1.2 ms

0.1 ms

— at "0" to "1", max.

4.8 ms

4.8 ms

3.5 ms

25 ms

25 ms

Cable length

● shielded, max.

1 000 m

1 000 m

1 000 m

1 000 m

1 000 m

● unshielded, max.

600 m

600 m

600 m

600 m

600 m

Encoder

Connectable encoders

● 2-wire sensor

Yes

Yes

Yes

Yes

Yes

— permissible quiescent current (2-wire sensor), max.

1.5 mA

1.5 mA

1 mA

2 mA

2 mA

Isochron mode

Isochron operation (application synchronized up to terminal)

No

No

No

No

No

Interrupts/diagnostics/sta information

Diagnostic functions

No

No

No

No

No

Alarms

● Diagnostic alarm

No

No

No

No

No

● Hardware interrupt

No

No

No

No

No

Potential separation

Potential separation digital inputs

● been the channels

No

No

No

No

Yes

● been the channels, in groups of

16

16

8

2

1

● been the channels and backplane

Yes; Optocoupler

Yes; Optocoupler

Yes; Optocoupler

Yes; Optocoupler

Yes; Optocoupler

Isolation

Isolation tested with

500 V DC

500 V DC

1500 V DC

4 000 V DC

1500 V AC

Standards, approvals, certificates

CE mark

Yes

Yes

Yes

Yes

Yes

UL approval

Yes; File E239877

Yes; File E239877

Yes; File E239877

Yes; File E239877

Yes; File E239877

FM approval

Yes; CofC 3028431

Yes; CofC 3028431

No

No

Yes; CofC 3028431

RCM (formerly C-TICK)

Yes

Yes

Yes

Yes

Yes

KC approval

Yes

Yes

Yes

Yes

Yes

EAC (formerly Gost-R)

Yes

Yes

Yes

Yes

Yes

Railway application

● EN 50155

Yes; T1 Category 1 Class A/B horizontal mounting position

Yes; T1 Category 1 Class A/B horizontal mounting position

Yes; T1 Category 1 Class A/B horizontal mounting position

● ATEX

Yes

Yes

No

No

No

Ambient conditions

Ambient temperature during operation

● min.

-40 °C; = Tmin

-40 °C; = Tmin

-25 °C

-40 °C; = Tmin

-25 °C

● max.

70 °C; = Tmax; 60 °C @ UL/cUL, ATEX and FMe

70 °C; = Tmax; fore on railway vehicles ording to EN50155, the rated temperature range -25 ... +55 °C (T1) or 60 °C @ UL/ULhaz/ATEX/FMe applies

70 °C; = Tmax; fore on railway vehicles ording to EN50155, the rated temperature range -25 ... +55 °C (T1) or 60 °C @ UL/ULhaz/ATEX/FMe applies

70 °C; = Tmax; fore on railway vehicles ording to EN50155, the rated temperature range -25 ... +55 °C (T1) or 60 °C @ UL/ULhaz/ATEX/FMe applies

70 °C; = Tmax; 60 °C @ UL/cUL, ATEX and FMe

Ambient temperature during storage/transportation

● min.

-40 °C

-40 °C

-40 °C

-40 °C

-40 °C

● max.

70 °C

70 °C

70 °C

70 °C

70 °C

Extended ambient conditions

● relative to ambient temperature-atmospheric pressure-installation altitude

Tmin ... Tmax at 1080 hPa ... 795 hPa (-1000 m ... +2000 m) // Tmin ... (Tmax - 10K) at 795 hPa ... 658 hPa (+2000 m ... +3500 m) // Tmin ... (Tmax - 20K) at 658 hPa ... 540 hPa (+3500 m ... +5000 m)

Tmin ... Tmax at 1080 hPa ... 795 hPa (-1000 m ... +2000 m) // Tmin ... (Tmax - 10K) at 795 hPa ... 658 hPa (+2000 m ... +3500 m) // Tmin ... (Tmax - 20K) at 658 hPa ... 540 hPa (+3500 m ... +5000 m)

Tmin ... Tmax at 1080 hPa ... 795 hPa (-1000 m ... +2000 m) // Tmin ... (Tmax - 10K) at 795 hPa ... 658 hPa (+2000 m ... +3500 m) // Tmin ... (Tmax - 20K) at 658 hPa ... 540 hPa (+3500 m ... +5000 m)

Tmin ... Tmax at 1080 hPa ... 795 hPa (-1000 m ... +2000 m)

Tmin ... Tmax at 1080 hPa ... 795 hPa (-1000 m ... +2000 m)

Relative humidity

— With condensation, tested in ordance with IEC 60068-2-38, max.

100 %; RH incl. condensation / frost (nomissioning in bedewed state), horizontal installation

100 %; RH incl. condensation / frost (nomissioning in bedewed state), horizontal installation

100 %; RH incl. condensation / frost (nomissioning in bedewed state), horizontal installation

100 %; RH incl. condensation / frost (nomissioning in bedewed state), horizontal installation

100 %; RH incl. condensation / frost (nomissioning in bedewed state), horizontal installation

Resistance

— against biologically active substances / conformity with EN 60721-3-3

Yes; Class 3B2 mold, fun and dry rot spores (with the exception of fauna). The supplied connector covers t remain on the ued interfaces during operation!

Yes; Class 3B2 mold, fun and dry rot spores (with the exception of fauna). The supplied connector covers t remain on the ued interfaces during operation!

Yes; Class 3B2 mold, fun and dry rot spores (with the exception of fauna). The supplied connector covers t remain on the ued interfaces during operation!

Yes; Class 3B2 mold, fun and dry rot spores (with the exception of fauna). The supplied connector covers t remain on the ued interfaces during operation!

Yes; Class 3B2 mold, fun and dry rot spores (with the exception of fauna). The supplied connector covers t remain on the ued interfaces during operation!

— against chemically active substances / conformity with EN 60721-3-3

Yes; Class 3C4 (RH < 75%) incl. salt spray ording to EN 60068-2-52 (degree of severity 3). The supplied connector covers t remain on the ued interfaces during operation!

Yes; Class 3C4 (RH < 75%) incl. salt spray ording to EN 60068-2-52 (degree of severity 3). The supplied connector covers t remain on the ued interfaces during operation!

Yes; Class 3C4 (RH < 75%) incl. salt spray ording to EN 60068-2-52 (degree of severity 3). The supplied connector covers t remain on the ued interfaces during operation!

Yes; Class 3C4 (RH < 75%) incl. salt spray ording to EN 60068-2-52 (degree of severity 3). The supplied connector covers t remain on the ued interfaces during operation!

Yes; Class 3C4 (RH < 75%) incl. salt spray ording to EN 60068-2-52 (degree of severity 3). The supplied connector covers t remain on the ued interfaces during operation!

— against mechanically active substances / conformity with EN 60721-3-3

Yes; Class 3S4 incl. sand, t. The supplied connector covers t remain on the ued interfaces during operation!

Yes; Class 3S4 incl. sand, t. The supplied connector covers t remain on the ued interfaces during operation!

Yes; Class 3S4 incl. sand, t. The supplied connector covers t remain on the ued interfaces during operation!

Yes; Class 3S4 incl. sand, t. The supplied connector covers t remain on the ued interfaces during operation!

Yes; Class 3S4 incl. sand, t. The supplied connector covers t remain on the ued interfaces during operation!

Connection method

required front connector

20-pin

40-pin

20-pin

20-pin

40-pin

Dimensions

Width

40 mm

40 mm

40 mm

40 mm

40 mm

Height

125 mm

125 mm

125 mm

125 mm

125 mm

Depth

120 mm

120 mm

120 mm

120 mm

120 mm

Weights

Weight, approx.

200 g

260 g

200 g

240 g

240 g

Order number

6AG1321-1FH00-7AA0

6AG1321-7BH01-2AB0

6AG1321-7TH00-4AB0

SIP S7-300 SM 321 16DI/120/230VAC

SIP SM321 16DE/24VDC

SIP PCS 7 SM321 16DE

Supply voltage

Load voltage L+

● Rated value (DC)

24 V

24 V

Load voltage L1

● Rated value (AC)

230 V; 120/230 V AC; all load voltages t have the same phase.

Input current

from load voltage L+ (without load), max.

90 mA

100 mA

from backplane 5 V DC, max.

29 mA

130 mA

100 mA

Power loss

Power loss, typ.

4.9 W

4 W

11 W

Time stamping

uracy

1 ms

Digital inputs

Number of digital inputs

16

16

16

Input characteristic curve in ordance with IEC 61131, type 1

Yes

No

Input characteristic curve in ordance with IEC 61131, type 2

Yes

Yes

Number of simultanely controllable inputs

horizontal installation

— up to 40 °C, max.

16

— up to 60 °C, max.

16; up to 70 °C

16

16

vertical installation

— up to 40 °C, max.

16

16

16

Input voltage

● Type of input voltage

AC

DC

DC

● Rated value (DC)

24 V

8.2 V; 8.2V/18V

● Rated value (AC)

230 V; 120/230V AC

● for signal "0"

0 to 40V

-30 to +5V

● for signal "1"

79 to 264V

13 to 30V

● Frequency range

47 ... 63 Hz

Input current

● for signal "1", typ.

6.5 mA; (120V, 60Hz), 16mA (230V, 50Hz)

7 mA

10 mA; for NAMUR: 2.1 to 7 mA, for 10k ohm/47k ohm contact: typical 10mA, for 4 wire BEROs: typical 10 mA

Input delay (for rated value of input voltage)

for standard inputs

— parameterizable

No

Yes; 0.1 / 0.5 / 3 / 15 / 20 ms

— at "0" to "1", min.

25 ms

2.5 ms

— at "0" to "1", max.

25 ms

3.5 ms

Cable length

● shielded, max.

1 000 m

1 000 m

400 m; max. 200m with 8.2 V sensor, max. 400m with 18 V sensor

● unshielded, max.

600 m

600 m

Not permitted

Encoder

Connectable encoders

● 2-wire sensor

Yes

Yes

— permissible quiescent current (2-wire sensor), max.

2 mA

2 mA

Isochron mode

Isochron operation (application synchronized up to terminal)

No

Yes

Interrupts/diagnostics/sta information

Diagnostic functions

No

Yes; Parameterizable

Yes

Alarms

● Diagnostic alarm

No

Yes; Parameterizable

Yes

● Hardware interrupt

No

Yes; Parameterizable

Yes

Potential separation

Potential separation digital inputs

● been the channels

No

No

Yes

● been the channels, in groups of

4

16

8

● been the channels and backplane

Yes; Optocoupler

Yes; Optocoupler

Yes

Isolation

Isolation tested with

4 000 V DC

500 V DC

600 V DC

Standards, approvals, certificates

CE mark

Yes

Yes

Yes

UL approval

Yes; File E239877

Yes; File E239877

Yes; File E239877

FM approval

Yes; CofC 3028431

Yes; CofC 3028431

Yes; CofC 3028431

RCM (formerly C-TICK)

Yes

Yes

Yes

KC approval

Yes

Yes

Yes

EAC (formerly Gost-R)

Yes

Yes

Yes

Railway application

● EN 50155

Yes; T1 Category 1 Class A/B horizontal mounting position

● ATEX

No

Yes

Yes

Ambient conditions

Ambient temperature during operation

● min.

-40 °C; = Tmin

-25 °C

0 °C

● max.

70 °C; = Tmax; 60 °C @ UL/cUL, ATEX and FMe

70 °C; = Tmax; 60 °C @ UL/cUL, ATEX and FMe

60 °C

Ambient temperature during storage/transportation

● min.

-40 °C

-40 °C

-40 °C

● max.

70 °C

70 °C

70 °C

Extended ambient conditions

● relative to ambient temperature-atmospheric pressure-installation altitude

Tmin ... Tmax at 1080 hPa ... 795 hPa (-1000 m ... +2000 m)

Tmin ... Tmax at 1080 hPa ... 795 hPa (-1000 m ... +2000 m) // Tmin ... (Tmax - 10K) at 795 hPa ... 658 hPa (+2000 m ... +3500 m) // Tmin ... (Tmax - 20K) at 658 hPa ... 540 hPa (+3500 m ... +5000 m)

Tmin ... Tmax at 1080 hPa ... 795 hPa (-1000 m ... +2000 m) // Tmin ... (Tmax - 10K) at 795 hPa ... 658 hPa (+2000 m ... +3500 m) // Tmin ... (Tmax - 20K) at 658 hPa ... 540 hPa (+3500 m ... +5000 m)

● At cold restart, min.

0 °C

Relative humidity

— With condensation, tested in ordance with IEC 60068-2-38, max.

100 %; RH incl. condensation / frost (nomissioning in bedewed state), horizontal installation

100 %; RH incl. condensation / frost (nomissioning in bedewed state), horizontal installation

100 %; RH incl. condensation / frost (nomissioning in bedewed state), horizontal installation

Resistance

— against biologically active substances / conformity with EN 60721-3-3

Yes; Class 3B2 mold, fun and dry rot spores (with the exception of fauna). The supplied connector covers t remain on the ued interfaces during operation!

Yes; Class 3B2 mold, fun and dry rot spores (with the exception of fauna). The supplied connector covers t remain on the ued interfaces during operation!

Yes; Class 3B2 mold, fun and dry rot spores (with the exception of fauna). The supplied connector covers t remain on the ued interfaces during operation!

— against chemically active substances / conformity with EN 60721-3-3

Yes; Class 3C4 (RH < 75%) incl. salt spray ording to EN 60068-2-52 (degree of severity 3). The supplied connector covers t remain on the ued interfaces during operation!

Yes; Class 3C4 (RH < 75%) incl. salt spray ording to EN 60068-2-52 (degree of severity 3). The supplied connector covers t remain on the ued interfaces during operation!

Yes; Class 3C4 (RH < 75%) incl. salt spray ording to EN 60068-2-52 (degree of severity 3). The supplied connector covers t remain on the ued interfaces during operation!

— against mechanically active substances / conformity with EN 60721-3-3

Yes; Class 3S4 incl. sand, t. The supplied connector covers t remain on the ued interfaces during operation!

Yes; Class 3S4 incl. sand, t. The supplied connector covers t remain on the ued interfaces during operation!

Yes; Class 3S4 incl. sand, t. The supplied connector covers t remain on the ued interfaces during operation!

Connection method

required front connector

20-pin

20-pin

40-pin

Dimensions

Width

40 mm

40 mm

40 mm

Height

125 mm

125 mm

125 mm

Depth

120 mm

120 mm

120 mm

Weights

Weight, approx.

240 g

200 g

Order number	6AG1321-1BH02-2AA0	6AG1321-1BL00-2AA0	6AG1321-1CH20-2AA0	6AG1321-1FF01-2AA0	6AG1321-1FF10-7AA0
	SIP SM321 16DE/24VDC	SIP SM321 32DE/24VDC	SIP SM 321 16DE/ DC 48-125 V	SIP S7-300 SM321 8DE/120/230VAC	SIP S7-300 SM321 8DI/120/230VAC
Supply voltage
Load voltage L+
● Rated value (DC)	24 V	24 V	48 V
Load voltage L1
● Rated value (AC)				230 V; 120/230V AC	230 V; 120/230 V AC; all load voltages t have the same phase.
Input current
from backplane 5 V DC, max.	10 mA	15 mA	40 mA	29 mA	100 mA
Power loss
Power loss, typ.	3.5 W	6.5 W	4.3 W	4.9 W	4.9 W
Digital inputs
Number of digital inputs	16	32	16	8	8
Input characteristic curve in ordance with IEC 61131, type 1	Yes	Yes	Yes	Yes	Yes
Number of simultanely controllable inputs
horizontal installation
— up to 40 °C, max.	16	32
— up to 50 °C, max.			8
— up to 60 °C, max.	16; 16 @ > 60 °C	16; 12 @ > 60 °C	8; 6 to Ue 146 V	8; up to 70 °C	8; 8 @ > 60 °C
vertical installation
— up to 40 °C, max.	16			8
Input voltage
● Type of input voltage	DC	DC	DC	AC	AC
● Rated value (DC)	24 V	24 V	48 V; 48 V DC to 125 V DC
● Rated value (AC)				230 V; 120/230V AC	120 V; 120/230V AC
● for signal "0"	-30 to +5V	-30 to +5V	-146 V DC to +15 V DC	0 to 40V	0 to 40V
● for signal "1"	13 to 30V	13 to 30V	30 V DC to 146 V DC	79 to 264V	79 to 264V
● Frequency range				47 ... 63 Hz	47 ... 63 Hz
Input current
● for signal "1", typ.	7 mA	7 mA	3.5 mA	6.5 mA; (120 V); 11 mA (230 V)	7.5 mA; (120 V); 17.3 mA (230 V)
Input delay (for rated value of input voltage)
for standard inputs
— parameterizable	No	No	No	No	No
— at "0" to "1", min.	1.2 ms	1.2 ms	0.1 ms
— at "0" to "1", max.	4.8 ms	4.8 ms	3.5 ms	25 ms	25 ms
Cable length
● shielded, max.	1 000 m	1 000 m	1 000 m	1 000 m	1 000 m
● unshielded, max.	600 m	600 m	600 m	600 m	600 m
Encoder
Connectable encoders
● 2-wire sensor	Yes	Yes	Yes	Yes	Yes
— permissible quiescent current (2-wire sensor), max.	1.5 mA	1.5 mA	1 mA	2 mA	2 mA
Isochron mode
Isochron operation (application synchronized up to terminal)	No	No	No	No	No
Interrupts/diagnostics/sta information
Diagnostic functions	No	No	No	No	No
Alarms
● Diagnostic alarm	No	No	No	No	No
● Hardware interrupt	No	No	No	No	No
Potential separation
Potential separation digital inputs
● been the channels	No	No	No	No	Yes
● been the channels, in groups of	16	16	8	2	1
● been the channels and backplane	Yes; Optocoupler	Yes; Optocoupler	Yes; Optocoupler	Yes; Optocoupler	Yes; Optocoupler
Isolation
Isolation tested with	500 V DC	500 V DC	1500 V DC	4 000 V DC	1500 V AC
Standards, approvals, certificates
CE mark	Yes	Yes	Yes	Yes	Yes
UL approval	Yes; File E239877	Yes; File E239877	Yes; File E239877	Yes; File E239877	Yes; File E239877
FM approval	Yes; CofC 3028431	Yes; CofC 3028431	No	No	Yes; CofC 3028431
RCM (formerly C-TICK)	Yes	Yes	Yes	Yes	Yes
KC approval	Yes	Yes	Yes	Yes	Yes
EAC (formerly Gost-R)	Yes	Yes	Yes	Yes	Yes
Railway application
● EN 50155		Yes; T1 Category 1 Class A/B horizontal mounting position	Yes; T1 Category 1 Class A/B horizontal mounting position	Yes; T1 Category 1 Class A/B horizontal mounting position

● ATEX	Yes	Yes	No	No	No
Ambient conditions
Ambient temperature during operation
● min.	-40 °C; = Tmin	-40 °C; = Tmin	-25 °C	-40 °C; = Tmin	-25 °C
● max.	70 °C; = Tmax; 60 °C @ UL/cUL, ATEX and FMe	70 °C; = Tmax; fore on railway vehicles ording to EN50155, the rated temperature range -25 ... +55 °C (T1) or 60 °C @ UL/ULhaz/ATEX/FMe applies	70 °C; = Tmax; fore on railway vehicles ording to EN50155, the rated temperature range -25 ... +55 °C (T1) or 60 °C @ UL/ULhaz/ATEX/FMe applies	70 °C; = Tmax; fore on railway vehicles ording to EN50155, the rated temperature range -25 ... +55 °C (T1) or 60 °C @ UL/ULhaz/ATEX/FMe applies	70 °C; = Tmax; 60 °C @ UL/cUL, ATEX and FMe
Ambient temperature during storage/transportation
● min.	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C
● max.	70 °C	70 °C	70 °C	70 °C	70 °C
Extended ambient conditions
● relative to ambient temperature-atmospheric pressure-installation altitude	Tmin ... Tmax at 1080 hPa ... 795 hPa (-1000 m ... +2000 m) // Tmin ... (Tmax - 10K) at 795 hPa ... 658 hPa (+2000 m ... +3500 m) // Tmin ... (Tmax - 20K) at 658 hPa ... 540 hPa (+3500 m ... +5000 m)	Tmin ... Tmax at 1080 hPa ... 795 hPa (-1000 m ... +2000 m) // Tmin ... (Tmax - 10K) at 795 hPa ... 658 hPa (+2000 m ... +3500 m) // Tmin ... (Tmax - 20K) at 658 hPa ... 540 hPa (+3500 m ... +5000 m)	Tmin ... Tmax at 1080 hPa ... 795 hPa (-1000 m ... +2000 m) // Tmin ... (Tmax - 10K) at 795 hPa ... 658 hPa (+2000 m ... +3500 m) // Tmin ... (Tmax - 20K) at 658 hPa ... 540 hPa (+3500 m ... +5000 m)	Tmin ... Tmax at 1080 hPa ... 795 hPa (-1000 m ... +2000 m)	Tmin ... Tmax at 1080 hPa ... 795 hPa (-1000 m ... +2000 m)
Relative humidity
— With condensation, tested in ordance with IEC 60068-2-38, max.	100 %; RH incl. condensation / frost (nomissioning in bedewed state), horizontal installation	100 %; RH incl. condensation / frost (nomissioning in bedewed state), horizontal installation	100 %; RH incl. condensation / frost (nomissioning in bedewed state), horizontal installation	100 %; RH incl. condensation / frost (nomissioning in bedewed state), horizontal installation	100 %; RH incl. condensation / frost (nomissioning in bedewed state), horizontal installation
Resistance
— against biologically active substances / conformity with EN 60721-3-3	Yes; Class 3B2 mold, fun and dry rot spores (with the exception of fauna). The supplied connector covers t remain on the ued interfaces during operation!	Yes; Class 3B2 mold, fun and dry rot spores (with the exception of fauna). The supplied connector covers t remain on the ued interfaces during operation!	Yes; Class 3B2 mold, fun and dry rot spores (with the exception of fauna). The supplied connector covers t remain on the ued interfaces during operation!	Yes; Class 3B2 mold, fun and dry rot spores (with the exception of fauna). The supplied connector covers t remain on the ued interfaces during operation!	Yes; Class 3B2 mold, fun and dry rot spores (with the exception of fauna). The supplied connector covers t remain on the ued interfaces during operation!
— against chemically active substances / conformity with EN 60721-3-3	Yes; Class 3C4 (RH < 75%) incl. salt spray ording to EN 60068-2-52 (degree of severity 3). The supplied connector covers t remain on the ued interfaces during operation!	Yes; Class 3C4 (RH < 75%) incl. salt spray ording to EN 60068-2-52 (degree of severity 3). The supplied connector covers t remain on the ued interfaces during operation!	Yes; Class 3C4 (RH < 75%) incl. salt spray ording to EN 60068-2-52 (degree of severity 3). The supplied connector covers t remain on the ued interfaces during operation!	Yes; Class 3C4 (RH < 75%) incl. salt spray ording to EN 60068-2-52 (degree of severity 3). The supplied connector covers t remain on the ued interfaces during operation!	Yes; Class 3C4 (RH < 75%) incl. salt spray ording to EN 60068-2-52 (degree of severity 3). The supplied connector covers t remain on the ued interfaces during operation!
— against mechanically active substances / conformity with EN 60721-3-3	Yes; Class 3S4 incl. sand, t. The supplied connector covers t remain on the ued interfaces during operation!	Yes; Class 3S4 incl. sand, t. The supplied connector covers t remain on the ued interfaces during operation!	Yes; Class 3S4 incl. sand, t. The supplied connector covers t remain on the ued interfaces during operation!	Yes; Class 3S4 incl. sand, t. The supplied connector covers t remain on the ued interfaces during operation!	Yes; Class 3S4 incl. sand, t. The supplied connector covers t remain on the ued interfaces during operation!
Connection method
required front connector	20-pin	40-pin	20-pin	20-pin	40-pin
Dimensions
Width	40 mm	40 mm	40 mm	40 mm	40 mm
Height	125 mm	125 mm	125 mm	125 mm	125 mm
Depth	120 mm	120 mm	120 mm	120 mm	120 mm
Weights
Weight, approx.	200 g	260 g	200 g	240 g	240 g

Order number	6AG1321-1FH00-7AA0	6AG1321-7BH01-2AB0	6AG1321-7TH00-4AB0
	SIP S7-300 SM 321 16DI/120/230VAC	SIP SM321 16DE/24VDC	SIP PCS 7 SM321 16DE
Supply voltage
Load voltage L+
● Rated value (DC)		24 V	24 V
Load voltage L1
● Rated value (AC)	230 V; 120/230 V AC; all load voltages t have the same phase.
Input current
from load voltage L+ (without load), max.		90 mA	100 mA
from backplane 5 V DC, max.	29 mA	130 mA	100 mA
Power loss
Power loss, typ.	4.9 W	4 W	11 W
Time stamping
uracy			1 ms
Digital inputs
Number of digital inputs	16	16	16
Input characteristic curve in ordance with IEC 61131, type 1	Yes		No
Input characteristic curve in ordance with IEC 61131, type 2		Yes	Yes
Number of simultanely controllable inputs
horizontal installation
— up to 40 °C, max.	16
— up to 60 °C, max.	16; up to 70 °C	16	16
vertical installation
— up to 40 °C, max.	16	16	16
Input voltage
● Type of input voltage	AC	DC	DC
● Rated value (DC)		24 V	8.2 V; 8.2V/18V
● Rated value (AC)	230 V; 120/230V AC
● for signal "0"	0 to 40V	-30 to +5V
● for signal "1"	79 to 264V	13 to 30V
● Frequency range	47 ... 63 Hz
Input current
● for signal "1", typ.	6.5 mA; (120V, 60Hz), 16mA (230V, 50Hz)	7 mA	10 mA; for NAMUR: 2.1 to 7 mA, for 10k ohm/47k ohm contact: typical 10mA, for 4 wire BEROs: typical 10 mA
Input delay (for rated value of input voltage)
for standard inputs
— parameterizable	No	Yes; 0.1 / 0.5 / 3 / 15 / 20 ms
— at "0" to "1", min.	25 ms		2.5 ms
— at "0" to "1", max.	25 ms		3.5 ms
Cable length
● shielded, max.	1 000 m	1 000 m	400 m; max. 200m with 8.2 V sensor, max. 400m with 18 V sensor
● unshielded, max.	600 m	600 m	Not permitted
Encoder
Connectable encoders
● 2-wire sensor	Yes	Yes
— permissible quiescent current (2-wire sensor), max.	2 mA	2 mA
Isochron mode
Isochron operation (application synchronized up to terminal)	No	Yes
Interrupts/diagnostics/sta information
Diagnostic functions	No	Yes; Parameterizable	Yes
Alarms
● Diagnostic alarm	No	Yes; Parameterizable	Yes
● Hardware interrupt	No	Yes; Parameterizable	Yes
Potential separation
Potential separation digital inputs
● been the channels	No	No	Yes
● been the channels, in groups of	4	16	8
● been the channels and backplane	Yes; Optocoupler	Yes; Optocoupler	Yes
Isolation
Isolation tested with	4 000 V DC	500 V DC	600 V DC
Standards, approvals, certificates
CE mark	Yes	Yes	Yes
UL approval	Yes; File E239877	Yes; File E239877	Yes; File E239877
FM approval	Yes; CofC 3028431	Yes; CofC 3028431	Yes; CofC 3028431
RCM (formerly C-TICK)	Yes	Yes	Yes
KC approval	Yes	Yes	Yes
EAC (formerly Gost-R)	Yes	Yes	Yes
Railway application
● EN 50155		Yes; T1 Category 1 Class A/B horizontal mounting position

● ATEX	No	Yes	Yes
Ambient conditions
Ambient temperature during operation
● min.	-40 °C; = Tmin	-25 °C	0 °C
● max.	70 °C; = Tmax; 60 °C @ UL/cUL, ATEX and FMe	70 °C; = Tmax; 60 °C @ UL/cUL, ATEX and FMe	60 °C
Ambient temperature during storage/transportation
● min.	-40 °C	-40 °C	-40 °C
● max.	70 °C	70 °C	70 °C
Extended ambient conditions
● relative to ambient temperature-atmospheric pressure-installation altitude	Tmin ... Tmax at 1080 hPa ... 795 hPa (-1000 m ... +2000 m)	Tmin ... Tmax at 1080 hPa ... 795 hPa (-1000 m ... +2000 m) // Tmin ... (Tmax - 10K) at 795 hPa ... 658 hPa (+2000 m ... +3500 m) // Tmin ... (Tmax - 20K) at 658 hPa ... 540 hPa (+3500 m ... +5000 m)	Tmin ... Tmax at 1080 hPa ... 795 hPa (-1000 m ... +2000 m) // Tmin ... (Tmax - 10K) at 795 hPa ... 658 hPa (+2000 m ... +3500 m) // Tmin ... (Tmax - 20K) at 658 hPa ... 540 hPa (+3500 m ... +5000 m)
● At cold restart, min.			0 °C
Relative humidity
— With condensation, tested in ordance with IEC 60068-2-38, max.	100 %; RH incl. condensation / frost (nomissioning in bedewed state), horizontal installation	100 %; RH incl. condensation / frost (nomissioning in bedewed state), horizontal installation	100 %; RH incl. condensation / frost (nomissioning in bedewed state), horizontal installation
Resistance
— against biologically active substances / conformity with EN 60721-3-3	Yes; Class 3B2 mold, fun and dry rot spores (with the exception of fauna). The supplied connector covers t remain on the ued interfaces during operation!	Yes; Class 3B2 mold, fun and dry rot spores (with the exception of fauna). The supplied connector covers t remain on the ued interfaces during operation!	Yes; Class 3B2 mold, fun and dry rot spores (with the exception of fauna). The supplied connector covers t remain on the ued interfaces during operation!
— against chemically active substances / conformity with EN 60721-3-3	Yes; Class 3C4 (RH < 75%) incl. salt spray ording to EN 60068-2-52 (degree of severity 3). The supplied connector covers t remain on the ued interfaces during operation!	Yes; Class 3C4 (RH < 75%) incl. salt spray ording to EN 60068-2-52 (degree of severity 3). The supplied connector covers t remain on the ued interfaces during operation!	Yes; Class 3C4 (RH < 75%) incl. salt spray ording to EN 60068-2-52 (degree of severity 3). The supplied connector covers t remain on the ued interfaces during operation!
— against mechanically active substances / conformity with EN 60721-3-3	Yes; Class 3S4 incl. sand, t. The supplied connector covers t remain on the ued interfaces during operation!	Yes; Class 3S4 incl. sand, t. The supplied connector covers t remain on the ued interfaces during operation!	Yes; Class 3S4 incl. sand, t. The supplied connector covers t remain on the ued interfaces during operation!
Connection method
required front connector	20-pin	20-pin	40-pin
Dimensions
Width	40 mm	40 mm	40 mm
Height	125 mm	125 mm	125 mm
Depth	120 mm	120 mm	120 mm
Weights
Weight, approx.	240 g	200 g