1794-IT8 是 Flex I/O 模拟输入模块 有八 (8) 个模拟输入通道
1794-IT8 是 Flex I/O 模拟输入模块。具体来说,这是一个热电偶和毫伏输入模块。它带有八 (8) 个模拟输入通道,兼容与热电偶传感器(如 J、K、E、R、N、S、B、C、T 和 L)直接接口,毫伏范围为 +/-76.5m。
1794-IT8 与任何可用的 Flex I/O 通信适配器兼容。
该模块兼容在温度应用范围内工作,例如使用 B 型热电偶在 300 至 1800oC(572 至 3272oF)的温度范围内;0 至 2315oC(32 至 4199oF)C 型;–230 至 1000oC(–382 至 1832oF)E 型;–195 至 1200oC(–319 至 2192oF) J 型;–230 至 1372oC(–382 至 2502oF)K 型;–270 至 1300oC(–450 至 2372oF)N 型;–50 至 1768oC(–58 至 3214oF)R 型;–50 至 1768oC(–58 至 3214oF)S 型;–195 至 400oC(–319 至 752oF)T 型;–175 至 800oC(–283 至 1472oF)L 型 Milivolt 输入信号实际上与传感器和其他产生非标准信号的仪器一起使用。与1794-IT8热电偶输入模块的数据交换使用块传输操作进行配置。
在将1794-IT8模块插入端子基座之前,用户应将底座上的钥匙开关旋转到位置3,因为该位置是热电偶/mV模块安全安装和操作所必需的。Allen-Bradley 1794-IT8 FLEX I/O 热电偶模块通过块传输选项与 PLC 通信。块传输编程依赖于在热电偶模块的存储器和PLC数据表中的指定区域之间移动的输入信号数据字。块传输编程还支持将配置字从PLC数据表移动到热电偶模块。Allen-Bradley 1794-IT8模块配有2个冷端补偿器,设计用于安装在端子基座单元的指定位置。该模块可以接受接地和非接地热电偶。输入信号的标称输入范围为-7.65至7.65 mV。该模块提供 24 伏直流电压,具有 16 位输入信号分辨率。在模块的正面,有 1 个插入的标签,其中 8 个字段保留用于单个输入指定。1794-IT8 在 60 赫兹时具有 -60 dB 的正常模式抑制比,共模输入范围为 +/-10 伏,115 赫兹时共模抑制比为 -60 dB,100 赫兹时为 50 dB。
1794-IT8 是 Flex I/O 模拟输入模块 有八 (8) 个模拟输入通道
The 1794-IT8 is a Flex I/O analog input module. Specifically, this is a thermocouple and millivolt input module. It comes with eight (8) analog input channels, compatible with thermocouple sensors such as J, K, E, R, N, S, B, C, T, and L, direct interfaces, and has a millivolt range of +/-76.5m.
The 1794-IT8 is compatible with any available Flex I/O communication adapter.
The module is compatible to operate in a range of temperature applications, such as using a Type B thermocouple in the temperature range of 300 to 1800oC (572 to 3272oF); 0 to 2315oC (32 to 4199oF) Type C; - 230 to 1000oC (-382 to 1832oF) Type E; -195 to 1200oC (-319 to 2192oF) Type J; -230 to 1372oC (-382 to 2502oF) Type K; -270 to 1300oC (-450 to 2372oF) N type; -50 to 1768oC (-58 to 3214oF) Type R; -50 to 1768oC (-58 to 3214oF) type S; -195 to 400oC (-319 to 752oF) type T; - 175 to 800oC (-283 to 1472oF) L-Milivolt input signals are actually used with sensors and other instruments that produce non-standard signals. The data exchange with the 1794-IT8 thermocouple input module is configured using a block transfer operation.
Before inserting the 1794-IT8 module into the terminal base, the user should turn the key switch on the base to position 3, as this position is necessary for the safe installation and operation of the thermocouple /mV module. Allen-Bradley 1794-IT8 FLEX I/O thermocouple module communicates with PLC via block transfer option. Block transfer programming relies on input signal data words that move between the memory of the thermocouple module and a specified region in the PLC data sheet. Block transfer programming also supports moving configuration words from the PLC data sheet to the thermocouple module. The Allen-Bradley 1794-IT8 module is equipped with 2 cold end compensators designed to be installed at specified locations in the terminal base unit. The module can accept both grounded and ungrounded thermocouples. The nominal input range of the input signal is -7.65 to 7.65 mV. The module provides 24 volts DC with a 16-bit input signal resolution. On the front of the module, there is an inserted label, of which 8 fields are reserved for a single input designation. The 1794-IT8 has a normal mode rejection ratio of -60 dB at 60 Hz with a common-mode input range of +/-10 volts, a common-mode rejection ratio of -60 dB at 115 Hz and 50 dB at 100 Hz.
1794-IT8 是 Flex I/O 模拟输入模块 有八 (8) 个模拟输入通道
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