1769-OF8C 紧凑型 I/O 模块 具有八 （8） 个单端电流输出通道

1769-OF8C 紧凑型 I/O 模块 具有八 （8） 个单端电流输出通道

Allen-Bradley 1769-OF8C 是紧凑型 I/O 模块。该模块与 1769 和一些 1768 CompactLogix 控制器以及 MicroLogix 1500 控制器兼容。该模块是一个模拟输出模块，通常用于驱动控制回路的zui终控制元件（FCE），以及向接收和测量元件传递信号。

1769-OF8C 主要具有八 （8） 个单端电流输出通道，可配置为 0-20 mA 和 4-20 mA。它具有 16 位数模转换器 （DAC），特定分辨率为 15.59 位，0-323 mA 为 4.20 μA/位，15-91 mA 为 0.323 位，0.20 μA/位。它在所有通道上的转换速率为5ms，对63%输出的阶跃响应小于2.9 ms。模拟输出范围为 0-21 mA 和 3.2-21 mA。

可由 1769-OF8C 驱动的典型zui终控制元件 （FCE） 是调制控制阀、变频驱动器 （VFD）、定位器和其他设备。为了用于自动控制回路，该模块可以集成到嵌入在处理器中的比例+积分+微分（PID）控制器中。可以从该设备接收信号的兼容接收和测量元件是面板仪表、数据记录器、信号分配器和其他类似类型的设备。

1769-OF8C 是一个单宽度模块，可以沿着 1769 和 1768 CompactLogix 组件安装，作为本地 I/O 和扩展 I/O 机架的一部分。它也可以与MicroLogix 1500控制器一起使用。

Allen-Bradley 1769-OF8C 可支持多达 8 个通道的同步模拟电流输出。在模块的正面，有一个 LED 指示灯，当模块没有遇到问题时，它会为绿色通电。此状态 LED 灯在检测到开环情况时可以警告用户。该模块还具有过流和过压保护功能。1769-OF8C 紧凑型 Logix 系列电流输出模块需要一个 24 伏直流额定外部电源，并包括通道对地隔离。所有输出均具有 16 位分辨率。1769-OF8C 输出模块包括一个集成的可拆卸接线端子，用于执行器的接线具有手指安全保护。该接线端子位于输出模块前部的门后面。连接该模块的zui常见方法是将其从模块下方路由到输出端子。1769-OF8C 还具有替换门套件，它使用尺寸为 22 x 14 AWG 的实心铜线。1769-OF8C 的输出阻抗大于 1 欧姆，并且具有短路保护。该模块可在 0 至 60 摄氏度的温度范围内运行。它在25摄氏度时的精度是满量程的0±.35%。1769-OF8C 出厂时重量约为 0.28 公斤，尺寸为 4.65 英寸 x 1.38 英寸 x 3.43 英寸。

1769-OF8C 紧凑型 I/O 模块 具有八 （8） 个单端电流输出通道
The Allen-Bradley 1769-OF8C is a compact I/O module. The module is compatible with 1769 and some 1768 CompactLogix controllers as well as MicroLogix 1500 controllers. This module is an analog output module that is typically used to drive the final control element (FCE) of the control loop, as well as to transmit signals to the receiving and measuring elements.

The 1769-OF8C primarily has eight (8) single-ended current output channels that can be configured for 0-20 mA and 4-20 mA. It has a 16-bit digital-to-analog converter (DAC) with a specific resolution of 15.59 bits, 4.20 μA/ bit from 0-323 mA, and 0.323 bits from 15-91 mA, 0.20 μA/ bit. It has a conversion rate of 5ms across all channels and a step response of less than 2.9ms for 63% of the output. Analog output ranges are 0-21 mA and 3.2-21 mA.

Typical final control elements (FCE) that can be driven by the 1769-OF8C are modulation control valves, variable frequency drivers (VFDS), positioners, and other devices. For use in automatic control loops, the module can be integrated into a proportional + integral + differential (PID) controller embedded in the processor. Compatible receiving and measuring components that can receive signals from this device are panel meters, data loggers, signal splitters, and other similar types of devices.

The 1769-OF8C is a single width module that can be installed along the 1769 and 1768 CompactLogix components as part of the local I/O and extended I/O racks. It can also be used with the MicroLogix 1500 controller.

Allen-Bradley 1769-OF8C can support synchronous analog current output up to 8 channels. On the front side of the module, there is an LED indicator that energizes the green when the module is not experiencing problems. This status LED light can warn the user when an open loop is detected. The module also has overcurrent and overvoltage protection functions. The 1769-OF8C compact Logix Series current output module requires a 24 volt DC rated external power supply and includes channel to ground isolation. All outputs have 16-bit resolution. The 1769-OF8C output module includes an integrated detachable terminal for actuator wiring with finger safety protection. The terminal is located behind the door at the front of the output module. The most common way to connect this module is to route it from below the module to the output terminal. The 1769-OF8C also has a replacement door kit, which uses solid copper wire with dimensions of 22 x 14 AWG. The 1769-OF8C has an output impedance greater than 1 ohms and short-circuit protection. The module can operate in a temperature range of 0 to 60 degrees Celsius. Its accuracy at 25 degrees Celsius is 0±.35% of full scale. The 1769-OF8C leaves the factory weighing about 0.28 kg and measuring 4.65 inches x 1.38 inches x 3.43 inches.

1769-OF8C 紧凑型 I/O 模块 具有八 （8） 个单端电流输出通道