1746-NIO4V 500模拟组合I/O模块

1746-NIO4V 500模拟组合I/O模块

Allen-Bradley的1746- nio4v SLC 500模拟组合I/O模块是安装在1746机箱上的I/O模块，具有2个用户可选择的(每个通道)电流或电压输入和2个电压输出。它具有2个电流环路输入，在250欧姆阻抗下正常额定值为-20至20mA，在79 ppm/5摄氏度的漂移率下输入精度为+/- 0.642%。它的两个输入点也具有-10至10伏直流额定电压，阻抗为1M欧姆，10伏直流满量程分辨率为305.176 ?V / LSB。

电压输入精度为+/-0.504%，总体漂移精度为+/- 63 ppm/摄氏度，zui大增益误差为+/- 0.461%。输入在0至60摄氏度时的偏移误差为+/- 14 LSB，输入端子上的1746-NIO4Vzui大过压保护在220伏交流或220伏直流下输入。它使用R-2R梯形数模转换器(DAC)，其电压输出的转换器分辨率为14位，响应时间为2毫秒。输出负载范围大于1kohm，负载电抗为1?F和-10至10伏的总输出范围。该电压的总体精度为10伏直流满量程电压的+/- 0.384%，zui大漂移精度为每摄氏度+/- 54 ppm。1746-NIO4V的zui大增益误差为+/- 0.374%，漂移误差为±47 ppm/摄氏度，输出偏置误差为+/-11 LSB。1746-NIO4V在500伏直流下提供现场布线到背板隔离，并使用屏蔽Belden #8761推荐电缆，额定尺寸为14 AWG。

Allen-Bradley 1746-NIO4V是一个模拟I/O组合模块。该模块具有2个输入通道和2个输出通道。输入通道具有可单独配置的差分电压和电流输入的兼容性。对于电流输入配置，可接受的信号范围为-20至+20 mA，分辨率为16位，重复性为±1 LSB，非线性为0.01%。它采用delta信号调制转换方法。当配置为电压输入时，可接受的电压信号范围为-10至+10V dc - 1lsb，分辨率为305.176µV / LSB。

1746-NIO4V的输出通道不带隔离。它可以提供0-20 mA的输出电流范围，分辨率为14位，采用R-2R梯形转换方法。它的阶跃响应为2.5 ms(在95%时)。

这种组合I/O模块的背板电流在5.1 VDC时为55 mA，在24VDC时为145 mA。它占用机箱的单个槽位，并附带一个可移动的端子块，用于终止与模块之间的信号线。

此外，1746-NIO4V可能成为CompactLogix和ControlLogix可编程自动化控制器(PAC)的一部分，作为分布式I/O模块。

1746-NIO4V 500模拟组合I/O模块

Allen-Bradley's 1746-NIO4V SLC 500 Analog Combined I/O module is an I/O module mounted on a 1746 chassis with 2 user-selectable (per channel) current or voltage inputs and 2 voltage outputs. It has 2 current loop inputs with a normal rating of -20 to 20mA at 250 ohm impedance and an input accuracy of +/ -0.642% at a drift rate of 79 ppm/5 degrees Celsius. Its two input points also have a -10 to 10-volt DC voltage rating, an impedance of 1M ohms, and a 10-volt DC full scale resolution of 305.176? V/LSB.

The voltage input accuracy is +/-0.504%, the overall drift accuracy is +/- 63 ppm/ C, and the maximum gain error is +/- 0.461%. The input has an offset error of +/ -14 LSB at 0 to 60 degrees Celsius, and the 1746-NIO4V maximum overvoltage protection on the input terminal is input at 220 volts AC or 220 volts DC. It uses an R-2R ladder digital-to-analog converter (DAC) with a converter resolution of 14 bits for its voltage output and a response time of 2 milliseconds. The output load range is greater than 1kohm and the load reactance is 1? Total output range of F and -10 to 10 volts. The overall accuracy of this voltage is +/- 0.384% of the 10 V DC full scale voltage, with a maximum drift accuracy of +/- 54 ppm per degree Celsius. The 1746-NIO4V has a maximum gain error of +/ -0.374%, a drift error of ±47 ppm/ C, and an output bias error of +/-11 LSB. The 1746-NIO4V provides field cabling to backplane isolation at 500 volts DC and uses a shielded Belden #8761 recommended cable rated at 14 AWG.

Allen-Bradley 1746-NIO4V is an analog I/O combination module. The module has 2 input channels and 2 output channels. The input channels are compatible with individually configurable differential voltage and current inputs. For current input configurations, the acceptable signal range is -20 to +20 mA, with 16-bit resolution, repeatability of ±1 LSB, and nonlinearity of 0.01%. It adopts the modulation conversion method of delta signal. When configured as a voltage input, acceptable voltage signals range from -10 to +10V dc-1lsb with a resolution of 305.176µV/LSB.

The output channel of the 1746-NIO4V has no isolation. It can provide an output current range of 0-20 mA, a resolution of 14 bits, and uses the R-2R ladder conversion method. It has a step response of 2.5 ms(at 95%).

The backplane current of this combined I/O module is 55 mA at 5.1 VDC and 145 mA at 24VDC. It occupies a single slot in the chassis and comes with a removable terminal block for terminating the signal line to and from the module.

In addition, the 1746-NIO4V May become part of CompactLogix and ControlLogix Programmable Automation Controllers (PACs) as distributed I/O modules.