1769-IF8 模拟输入模块
【产品详情】
Allen-Bradley的1769-IF8紧凑型I/O模拟输入模块是一种模拟输入模块，具有8个差分输入，电压范围为+/-10伏DC, 0至10伏DC, 0至5伏DC和1至5伏DC，电流范围为0至20 mA和4至0 mA。
1769-IF8的背板在5伏直流电时的输出电流为120毫安，在24伏直流电时的输出电流为70毫安，工作时的输出热量为3.64瓦。它采用Delta -Sigma模拟数字转换器，其分辨率为16位单极或15位加号。它具有过滤器/配置相关的通道响应速度。它的最大母线引出电流在5伏直流时为120毫安，在24伏直流时为70毫安，电压端输入阻抗为220千克，电流端输入阻抗为250欧姆。
1769-IF8具有每个通道+/-10伏直流的公共失调电压范围，以及在50至60赫兹时大于60 dB的共模抑制比。该模拟输入模块对电压信号的总体精度为+/-0.2%，对电流信号的总体精度为0.35%，对电压信号的总体漂移精度为+/-0.003%，对电流信号的总体漂移精度为每摄氏度+/-0.0045%。它还具有+/-0.03%的输入非线性和+/-0.03%的重复性。1769-IF8有一个指示灯显示模块的FAULT状态。1769-IF8通过位报告实现超量程或过量程的自动自诊断，也可以处理告警。它在0.1 mA电压端具有+/-30 v直流连续的最大输入端过载，在+/-7.6 v直流时具有+/-32 mA过载。它的工作温度范围在0到60摄氏度(32到140华氏度)之间，凝结的相对湿度限制为95%。它重约450克(0.99磅)，尺寸约为118 x 87 x 52.5毫米。
1769- if8是由Allen-Bradley制造的紧凑型I/O模块，与1769 CompactLogix控制器和MicroLogix 1500控制器兼容。该控制器具有嵌入式八(8)输入通道，支持差分和单端布线。
可配置的信号是0- 20ma和4-20mA和+/10VDC, 1-5VDC, 0-5VDC, 0-10VDC。
输入通道接收到的模拟信号分别使用Delta-Sigma转换方法进行转换。转换后的信号存储在处理器的内存中，单极性占用16位，双极性占用15位。在寄存器内是一组二进制位，表示输入信号的值。为了正确显示等效的测量值或工程值，使用Scale指令来调节数据。处理的数据可以配置为工程单位，可按PID、百分比范围和原始数据进行缩放。
1769-IF8的供电距离额定为8个模块。这是指物理模块位置，这意味着它不能安装在距离1769 CompactLogix电源8个模块的地方。此电源距离额定值可确保模块接收到适当的背板电源。
1769-IF8 模拟输入模块
【英文介绍】
Allen-Bradley's 1769-IF8 compact I/O analog input module is an analog input module with eight differential inputs in voltage ranges of +/-10 volt DC, 0 to 10 volt DC, 0 to 5 volt DC, and 1 to 5 volt DC with current ranges of 0 to 20 mA and 4 to 0 mA.
The backplane of the 1769-IF8 has an output current of 120 mah at 5 volts DC, 70 mah at 24 volts DC, and a heat output of 3.64 watts in operation. It uses a Delta-Sigma analog-to-digital converter with a resolution of 16-bit monopole or 15-bit plus sign. It has a filter/configuration dependent channel response speed. Its maximum bus-derived current is 120 mA at 5 volts DC and 70 mA at 24 volts DC, with an input impedance of 220 kg at the voltage end and 250 ohms at the current end.
The 1769-IF8 has a common offset voltage range of +/-10 volts DC per channel and a common-mode rejection ratio greater than 60 dB at 50 to 60 Hz. The overall accuracy of the analog input module is +/-0.2% for the voltage signal, 0.35% for the current signal, +/-0.003% for the voltage signal, and +/-0.0045% for the current signal per degree Celsius. It also has a +/-0.03% input nonlinearity and +/-0.03% repeatability. 1769-IF8 has an indicator indicating the FAULT status of the module. The 1769-IF8 enables automatic self-diagnosis of overranges or overranges with bit reports, and can also handle alarms. It has a maximum input overload of +/-30 v DC continuous at the 0.1 mA voltage end and +/-32 mA at +/-7.6 v DC. It operates in a temperature range of 0 to 60 degrees Celsius (32 to 140 degrees Fahrenheit), with a 95% relative humidity limit for condensation. It weighs about 450 grams (0.99 lb) and measures about 118 x 87 x 52.5 mm.
The 1769-IF8 is a compact I/O module manufactured by Allen-Bradley that is compatible with the 1769 CompactLogix controller and the MicroLogix 1500 controller. The controller has an embedded eight (8) input channel that supports differential and single-ended wiring.
The configurable signals are 0-20ma and 4-20mA and +/10VDC, 1-5VDC, 0-5VDC, 0-10VDC.
The analog signals received by the input channel are respectively converted using the Delta-Sigma conversion method. The converted signal is stored in the processor's memory, with unipolar occupying 16 bits and bipolar occupying 15 bits. Inside the register is a set of binary bits representing the value of the input signal. To correctly display equivalent measured or engineered values, use the Scale command to adjust the data. The data processed can be configured as engineering units and scaled by PID, percentage range, and raw data.
The 1769-IF8 power supply distance is rated for 8 modules. This refers to the physical module location, which means that it cannot be installed eight modules away from the 1769 CompactLogix power supply. This power distance rating ensures that the module is receiving the appropriate backplane power.
1769-IF8 模拟输入模块
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