1756-OF4 是 Allen-Bradley(罗克韦尔自动化)生产的 ControlLogix 系列的一个模拟输出模块。这个模块提供 4 路电压或电流输出,具有高分辨率和精确的输出信号控制能力。
以下是该模块的一些关键特点:
输出类型:提供 4 路电压或电流输出。
电流分辨率:15 位,21 mA 输出时为 650 nA/位。
电压分辨率:16 位,10.5V 输出时为 320 μV/位。
兼容的可拆卸端子块:需要一个 20 针的 RTB(可移动接线板),兼容的 RTB 型号为 1756-TBSH 和 1756-TBNH。
功耗:在 5.1V 直流电压下工作时电流消耗为 150 mA,在 24V 直流电压下工作时电流消耗为 120 mA。
热性能:具有良好的散热性能,热耗散额定值为 10.91 BTU/hr。
负载能力:能够驱动高达 2000 欧姆的电阻负载和 0 至 750 欧姆的电流负载。
精度:在 25 摄氏度时的满量程精度裕量为 0.5%,输出纹波在 0 至 50 千赫范围内为 +/-0.05%。
1756-OF4 模块适用于多种工业自动化应用,如驱动变频器、控制阀门、风门、百叶窗等执行器,或用于转发信号给记录器、指示器、数据记录器和外部控制器。它也可用于实现用户程序中配置的控制输出或命令,包括 PID 控制器、数学计算、手动输入界面、移动和类似模拟处理指令。
该模块要求每 12 个月校准一次,校准精度优于 4 至 21 毫安,-10.4 至 10.4 伏范围的 0.05%。它已经在 1350 伏交流电下进行了 2 秒钟的常规测试,并具有 250 伏的持续隔离电压。模块的电压驱动能力大于 2000 欧姆,电流驱动能力为 0 至 750 欧姆。
The 1756-OF4 is an analog output module in the ControlLogix series produced by Allen-Bradley (Rockwell Automation). This module provides 4 voltage or current outputs with high resolution and precise output signal control.
Here are some of the key features of the module:
Output type: Provides four voltage or current outputs.
Current resolution: 15 bits, 650 nA/ bit at 21 mA output.
Voltage resolution: 16 bit, 320 μV/ bit at 10.5V output.
Compatible detachable terminal block: A 20-pin RTB (removable patch board) is required, and compatible RTB models are 1756-TBSH and 1756-TBNH.
Power consumption: The current consumption is 150 mA when operating at 5.1V DC voltage and 120 mA when operating at 24V DC voltage.
Thermal performance: Has good heat dissipation performance, heat dissipation rating of 10.91 BTU/hr.
Load capacity: Capable of driving resistance loads up to 2000 ohms and current loads from 0 to 750 ohms.
Accuracy: Full scale accuracy margin of 0.5% at 25 degrees Celsius and output ripple of +/-0.05% in the 0 to 50 KHZ range.
The 1756-OF4 module is suitable for a variety of industrial automation applications, such as driving actuators such as inverters, controlling valves, valves, shutters, or for forwarding signals to loggers, indicators, data loggers and external controllers. It can also be used to implement control outputs or commands configured in user programs, including PID controllers, mathematical calculations, manual input interfaces, movement, and similar analog processing instructions.
The module is required to be calibrated every 12 months with a calibration accuracy better than 0.05% of the range of 4 to 21 MA, -10.4 to 10.4 volts. It has been routinely tested for 2 seconds at 1350 volts AC and has a sustained isolation voltage of 250 volts. The module has a voltage drive capability greater than 2000 ohms and a current drive capability of 0 to 750 ohms.
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