1756-IF16H ControlLogix可编程逻辑控制器自动化

Allen-Bradley 1756-IF16H是1756 ControlLogix可编程逻辑控制器自动化(PAC)的模拟输入模块。它支持通过硬连线和高速可寻址远程传感器(HART)通信协议集成0-20 mA或4-20 mA输入信号。

该模块每通道提供十六(16)个差分电流信号和一(1)个HART调制解调器。  1756-IF16H集成了采用逐次逼近法的模数转换器(ADC)。模拟转换分辨率范围为16-21位，允许显示更多的测量点。转换后的信号以整数模式保存(左对齐，2 s补码)IEEE 32位浮点数。  

Allen-Bradley建议在端接1756-IF16H信号时使用单线连接。线径为0.33…2.1 mm2 (22…14 AWG)的实心或绞合屏蔽铜线，绝缘等级为105°C(221°F)或更高，最大绝缘厚度为1.2 mm (3/64英寸。).与1756-IF16H一起使用的兼容可拆卸接线板(RTB)是1756-TBCH和1756-TBS6H。  1756-IF16H的校准精度优于所有过滤器量程的0.13%，而模块误差为量程的0.3%。模块的输入扫描时间为11…328 ms，取决于滤波器，而如果所有通道都启用了HART，则模块HART扫描时间估计为1 s。

1756-IF16H ControlLogix可编程逻辑控制器自动化

Allen-Bradley 1756-IF16H is an analog input module for the 1756 ControlLogix Programmable Logic Controller Automation (PAC). It supports the integration of 0-20 mA or 4-20 mA input signals via hardwired and high-speed addressable Remote Sensor (HART) communication protocols.

The module provides sixteen (16) differential current signals and one (1) HART modem per channel. The 1756-IF16H incorporates an analog-to-digital converter (ADC) using the successive approximation method. The analog conversion resolution ranges from 16-21 bits, allowing more measurement points to be displayed. The converted signal is saved in integer mode (left-justified, 2 s complement) as an IEEE 32-bit floating point number.

Allen-Bradley recommended using a single wire connection when terminating the 1756-IF16H signal. The wire diameter is 0.33... 2.1 mm2 (22... 14 AWG) solid or stranded shielded copper wire with an insulation class of 105°C(221°F) or higher and a maximum insulation thickness of 1.2 mm (3/64 inch). Compatible detachable patch boards (RTB) used with the 1756-IF16H are the 1756-TBCH and 1756-TBS6H. The calibration accuracy of the 1756-IF16H is better than 0.13% of all filter ranges, while the module error is 0.3% of the range. The input scan time of the module is 11... 328 ms, depending on the filter, while the module HART scan time is estimated to be 1 s if all channels are HART-enabled.