ABB-DI04 独立通道隔离  DI 模块

【产品详情】

产品编号：

DI04

ABB 型号名称：

DI04

目录说明：

DI 模块，16 通道，48 VDC

详细描述：

48VDC，独立通道隔离。对于 SOE 支持，请使用 DI01 模块。使用基础 xBS01-FPH、xBS01-FPN 或 xBS01-EPD

主要说明ABB-DI04的使用

·数码管的动态显示作为辅助功能，方便观察

·利用滑变和5V电源来获得一个输入电压值，输入到ABB-DI04的输入端

ABB-DI04芯片的介绍

A/D转换概念

即模数转换，输入模拟量（(比如电压信号)，输出一个与模拟量对应的数字量(常为二进制形式)。例如参考电压VREF为5V，采用8位的模数转换器时，当输入电压为OV时，输出的数字量为0000 0000,当输入的电压为5V时，输出的数字量为111111.当输入的电压从OV到5V变化时，输出量从O000 0000到11111111变化。这样每一个输入电压值对应一个输出数字量，即实现模数转换。

分辨率概念

分辨率是指使输出数字量变化1时的输入模拟量，也就是使输出数字量变化一个相邻数码所需输入模拟量的变化值。

分辨率与AD转换器的位数有确定的关系，可以表示成FS/2^n。FS表示满量程输入值，n为AD转换器的位数。例如对于5V的满量程，采用4位的ADC9时，5V16=0.3125V(也就是说当输入的电压值每增加0.3125V，输出的数字量增加1);采用8位的ADC时，分辨率为5V/256=19.5mV(也就是说当输入的电压每增加19.5mV，则输出的数字量增加1);当采用12位的ADC时，分辨率则为5VI4096=1.22mv(也就是说当输入的电压每增加1.22mV，则输出的数字量增加1)。显然位数越多，分辨率越高。

ABB-DI04 独立通道隔离  DI 模块

【英文介绍】

Product Number:

DI04

ABB Model Name:

DI04

Directory description:

DI module, 16 channels, 48 VDC

Detailed description:

48VDC, independent channel isolation. For SOE support, use the DI01 module. Use basic xBS01-FPH, xBS01-FPN, or xBS01-EPD

This paper mainly describes the use of ABB-DI04

· Dynamic display of digital tube as an auxiliary function for easy observation

· Use slip and 5V power supply to obtain an input voltage value and input it to the input of ABB-DI04

Introduction of ABB-DI04 chip

A/D conversion concept

That is, analog-to-digital conversion, which inputs an analog quantity (such as a voltage signal) and outputs a digital quantity corresponding to the analog quantity (usually in binary form). For example, the reference voltage VREF is 5V, when the 8-bit analog-to-digital converter is used, when the input voltage is OV, the output digital quantity is 0000 0000, when the input voltage is 5V, the output digital quantity is 111111. When the input voltage varies from OV to 5V, the output varies from O000 0000 to 11111111. In this way, each input voltage value corresponds to an output digital quantity, that is, to achieve analog-to-digital conversion.

Resolution concept

Resolution is the input analog when the output digit changes by 1, that is, the change in the input analog required to make the output digit change by an adjacent digit.

The resolution has a definite relationship with the number of bits of the AD converter and can be expressed as FS/2^n. FS represents the full scale input value, and n is the number of bits in the AD converter. For example, for the full scale of 5V, when the 4-bit ADC9 is used, 5V16=0.3125V(that is, when the input voltage value increases by 0.3125V, the output digital quantity increases by 1); When using an 8-bit ADC, the resolution is 5V/256=19.5mV(that is, when the input voltage increases by 19.5mV, the output digital amount increases by 1); When a 12-bit ADC is used, the resolution is 5VI4096=1.22mv(that is, when the input voltage increases by 1.22mV, the output digital amount increases by 1). Obviously, the more bits, the higher the resolution.

ABB-DI04 独立通道隔离  DI 模块

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