1794-TB3 用作现场设备和电源设备的端点

1794-TB3 用作现场设备和电源设备的端点

1794-TB3 是由 Allen-Bradley 制造的 Flex I/O 组件。该组件专门用作终端基座单元，主要用作现场设备和电源设备的端点。该模块还专门用于托管 Flex I/O 模块，包括 1794-IA8、1794-IA8I、1794-IA16、1794-OA8、1794-OA8I、1794-OA16、1794-IB8、1794-IB16XT、1794-IB10XOB6、1794-IB10XOB6XT、1794-IC16、1794-IG16、1794-IH16、1794-IV16、1794-OB8、1794-OB8EP、1794-OB8EPXT、1794-OB16、1794-OB16D、1794-OB16P、1794-OB16PXT、1794-OC16、 1794-OG16、1794-OV16、1794-OV16P、1794-OW8 和 1794-OW8XT。1794-TB3 有三 （3） 个端子排。顶部端子排由十六 （16） 个端子组成，专门用于输入和输出信号的接线。中间和底部端子由十八 （18） 个端子组成，分别用于公共端子和电压端子。-V Common 位于 B-16 和 B-33 航站楼;+V（电压输入）端子位于 C-34 和 C-5 端子。为了以菊花链方式连接到附近的 Flex I/O 模块和端子底座，菊花链端子位于 C-34 （+） 和 B-16 （-） 处，用于供电输入，C-51 （+） 和 B-33 （-） 用于供电。1794-TB3 具有螺丝夹端子。要安装端子底座，请将端子底座放置在略微倾斜的方向。将端子底座挂在 DIN 导轨顶部，将端子底座的背面连接到 DIN 导轨上。端子底座挂钩必须滑到适配器模块边缘下方，并且 FlexBus 连接器已接合。滑动端子底座并紧紧推到相邻的适配器上。要将端子底座锁定到 DIN 导轨上，请推动端子基座，直到 1794-TB3 对齐并啮合到 DIN 导轨上。

Allen-Bradley 的 1794-TB3 Flex I/O 端子基座单元是一种为 I/O 接线提供端子连接点并有助于形成背板的设备。它zui多有 16 个 I/O 连接，具有 18 个公共端子和 18 个电压端子。1794-TB3 用于具有 125V AC/DC 电气额定值的应用，其zui大电流容量为 10A，采用 0.21 x 1.3 mm2 （24-16 AWG） 绞合铜线，用于输入和输出模块。1794-TB3 的 Flexbus 额定值为 5V DC/640mA，可为 I/O 端子提供 2A 电流。它还具有 125V DC/AC 和 10A （50-60Hz） 的 V/COM 端子额定值。

1794-TB3 在 FLEXBUS 的现场接线端子之间使用基本绝缘类型提供 125V（连续）的电压隔离，其端子螺钉扭矩为 0.56 x 0.79 Nm （5 x 7lb-in）。它具有 T4A（北美）指定的温度代码和 IEC T4 温度代码。1794-TB3 在 20-70% 非冷凝相对湿度下的 IEC 额定工作温度为 -4-158 摄氏度（-5-95 华氏度），经测试和额定可承受 30G 的操作冲击和 5-10Hz 下的 500G 振动。1794-TB3 通过了 c-UL-us、UL、CSA 和 CE 认证，尺寸为 94 毫米 x 94 毫米 x 69 毫米（3.7 英寸 x 3.7 英寸 x 2.7 英寸）。

1794-TB3 用作现场设备和电源设备的端点

The Allen-Bradley 1794-OE12 is a high-density analog output module that is part of the Flex IO product family. The module has twelve (12) output channels that can be configured for 0-20mA, 4-20 mA current signals, and +/- 10VDC voltage signals. The module's channels are non-isolated and support a single-ended cabling configuration.

The 1794-OE12 is used with terminal bases such as 1794-TB3G and 1794-TB3GS with key switch position 4. It has an open housing, which means that the module and the entire Flex I/O assembly must be installed inside the housing to provide adequate protection for industrial elements.

The 1794-OE12 is equipped with a built-in analog-to-digital circuit (ADC) converter. It converts digital data into analog signals with a resolution of 16 bits and a 2-complement data format. For both voltage and current signals, the absolute accuracy of each output channel is 0.1% full scale @ 25 °C, with an accuracy drift of 0.004% full scale /°C for both signal configurations.

The current consumption of the 1794-OE12 is 80 mA, and the supply voltage is required to be 10.5-31.2VDC. Its power consumption is 7.68W@24V DC, heat dissipation is 26.2 BTU/ hr@24V DC, isolation voltage is 50V (continuous), basic insulation type. There is no isolation between channels. It has a physical dimension of 94.0 x 94.0 x 53.3 mm or 3.7 x 3.7 x 2.1 inches and has a built-in group diagnostic LED.

The 1794-OE12 has an operating temperature of -20 to 60 °C (-4 to 140 °F), a storage temperature requirement of -40 to 85 °C (-40 to 185 °F), and a relative humidity of 5-95%. Its operating shock and vibration ratings are 30 g and 5 g @ 10... 500 Hz.

1794-OE12 does not require calibration. It has a physical size of 3.7 x 3.7 x 2.1 inches and an open housing. It can be mounted using DIN rails. The output of the 1794-OE12 module is 0 mA until the configuration is complete. After configuration, the output signal range is 4-20 mA and 0-20 mA, both of which can be configured by the user, while the configurable output voltage range is +/-10V. The module's mA output resistance load is 0-750? At 24V DC and maximum voltage output current load 3 mA. The current resolution is 0.641 μA/cnt and the voltage resolution is 320 μV/cnt. The module has a nominal external DC power supply of 24V DC and an external DC power supply voltage range of 10-31.2V DC, including 5% AC ripple. The module's external DC power supply current is 720 mA (10V DC) and 320 mA (24V DC). The 1794-OE12 module also features a FlexBus current of 80 mA and a continuous isolation voltage of 50V, which has been tested at 850V DC for 60 seconds, especially between the user and the system power supply. The absolute accuracy of the voltage and current terminals is 0.1% full scale (25% each), and the accuracy of the voltage and current terminals varies with temperature by 0.004% full scale/Celsius. The module has a maximum power consumption of 2W at both 4V DC and 10.31V DC, a maximum heat dissipation of 3.24W at 4V DC, and a maximum heat dissipation of 7.24 BTU/hr at 4V DC. The module has an operating temperature of -20 to 60 degrees Celsius and a storage temperature of -40 to 85 degrees Celsius. It also has a relative humidity of 5-95% and is non-condensing. The module also has a working shock of 5 g, a non-working shock of 10 g and a working vibration of 500 g at 30-50 Hz.