产品详情：1797-IE8 Flex Ex模拟输入模块

Allen-Bradley 1797-IE8是一个Flex Ex模拟输入模块。该模块具有本质安全(is)输入类型，额定值为Ex ia IIB/IIC T4 AEx ia IIC T4 I、II、III级1区A-G组T4，本质安全模块类型为Ex IB IIB/IIC T4 AEx IB IIC T4 I、II、III级1区A-D组T4。

1797-IE8有八(8)个非隔离的模拟输入通道。每个通道都经过单独配置，能够接收分辨率为16位的0-20 mA和4-20 mA信号。模拟数据在内部被转换成具有可配置数据格式的数字数据。该模块在20°C(68°F)时的精度为输出信号范围的0.1%，输出信号范围的温度漂移为0.05%/C。

模块的最快更新速度约为200毫秒，最慢更新时间约为1600秒。这种更新速率很大程度上取决于模块与通信适配器之间的距离。

1797-IE8设计有内部诊断，使模块能够检测报警情况，如导线破损检测、超量程/欠量程报警和远程变送器报警。

1797-IE8要求具有同等额定值的端子底座。兼容的终端基座包括1797-TB3或1797-TB3S。它不能与标准Flex I/O端子底座一起使用。当建立到终端基座的I/O连接时，推荐的电线尺寸为4mm2 (12 AWG)，多股铜线。此外，推荐的绝缘厚度为1.2毫米(3/64英寸。).模块的钥匙开关分配在位置3。

1797-IE8

Allen Bradley 1797-IE8 is a Flex Ex analog input module. This module has an intrinsic safety (is) input type, rated as Ex ia IIB/IIC T4 AEx ia IIC T4 Class I, II, III Zone 1 A-G Group T4, and an intrinsic safety module type of Ex IB IIB/IIC T4 AEx IB IIC T4 I, II, III Zone 1 A-D Group T4.
1797-IE8 has eight (8) non isolated analog input channels. Each channel is individually configured to receive 0-20 mA and 4-20 mA signals with a resolution of 16 bits. Analog data is internally converted into digital data with configurable data formats. The accuracy of this module at 20 ° C (68 ° F) is 0.1% of the output signal range, and the temperature drift of the output signal range is 0.05%/C.
The fastest update speed of the module is about 200 milliseconds, and the slowest update time is about 1600 seconds. This update rate largely depends on the distance between the module and the communication adapter.
The 1797-IE8 is designed with internal diagnostics that enable the module to detect alarm situations such as wire breakage detection, over/under range alarms, and remote transmitter alarms.
1797-IE8 requires terminal bases with equivalent ratings. Compatible terminal bases include 1797-TB3 or 1797-TB3S. It cannot be used with standard Flex I/O terminal bases. When establishing an I/O connection to the terminal base, the recommended wire size is 4mm2 (12 AWG) with multiple copper wires. In addition, the recommended insulation thickness is 1.2 millimeters (3/64 inches). The key switch of the module is assigned to position 3.