SIEMENS上海楚控自动化设备有限公司(西门子**授权代理商)
询价热线: 15000687827,021-60512610
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。 -
Technical Specifications
Order number
6ES7221-1BF32-0xB0
6ES7221-1BH32-0xB0
DIGITAL INPUT SM 1221, 8DI, 24V DC
DIGITAL INPUT SM 1221, 16DI, 24V DC
General information
Product type designation
SM 1221 DI 8x24 VDC
SM 1221 DI 16x24 VDC
Supply voltage
Rated value (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; per channel
4 mA; per channel
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 value (DC)
24 V
24 V
-
● for signal "0"
5 V DC at 1 mA
5 V DC at 1 mA
-
● for signal "1"
15 V DC at 2.5 mA
15 V DC 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 value 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
Interrupts/diagnostics/status information
Alarms
-
● Diagnostic alarm
Yes
Yes
Diagnostics indication LED
-
● for status of the inputs
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 product package
0.3 m; five times, in product 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
Enclosure material (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
-