参数资料
型号: 151-0153
厂商: Rabbit Semiconductor
文件页数: 61/162页
文件大小: 0K
描述: ASSEMBLY - RABBITFLEX CABLES
标准包装: 1
系列: RabbitFLEX™
附件类型: 缆线组件
适用于相关产品: BL300F
4.3.13.3 Analog Input 4-20 mA
This section presents the circuit schematic and the characteristics for the 4-20 mA analog input.
This analog input provides a simple interface for industry standard 4-20 mA devices. It is a passive input
and the device must either supply the loop current or be wired in series with a supply to operate correctly.
The loop is formed by using the input pin as the SIG+ line and the ground pin as the SIG- or signal return.
A design consideration for choosing the appropriate ADC circuit for your application is the fact that cur-
rent is preferred over voltage in noisy industrial/control environments where the transmission of low-
amplitude, low-frequency signals must travel significant distances. This is because the current stays con-
stant over the length of the cable.
Figure 4-27 Analog Input 4-20 mA Circuit Schematic
I/O
Pin
R5
2.2 k W
R7
100 W
C1
10 nF
Analog Input
Cell
VERSION 6.01
Analog Input, 4?20 mA
Table 4-23. ADC 4-20 mA Characteristics
RabbitFLEX User’s Manual
55
相关PDF资料
PDF描述
1515738-1 INSERT ASSEMBLY 1 CHANNEL
1515739-1 INSERT ASSEMBLY, 2 X 1310
1515740-1 INSERT ASSEMBLY 4 CHANNEL
1515747-1 INSERT ASSEMBLY 4 CHANNEL
1515867-1 PROTECTIVE CAP,PLUG CONN.
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