1761-L20BWA-5A 是一款可编程逻辑控制器

Allen-Bradley 1761- l20bwa - 5a是一款可编程逻辑控制器(PLC)，属于Bulletin 1761 MicroLogix 1000产品系列。该MicroLogix控制器设计有内置的离散和模拟输入通道，使该控制器能够实现自动和手动控制的离散和模拟回路控制。具有模拟控制回路功能。1761-L20BWA-5A特别适合用作微型和小型机器和过程的自动化控制器。它是一种通用控制器，理想地用于机器控制，物料处理，阀门排序和简单复杂的类似应用。

该1761-L20BWA-5A由外部交流电源供电，电压范围为85-264V, 120VAC时额定功耗为30VA, 240VAC标称输入电源工作时额定功耗为36VA，额定承受30A浪涌电流，持续8ms。

1761-L20BWA-5A具有12个数字输入通道，标称工作电压为24VDC。这些输入通道通常用于连接ON/OFF设备，如开关、辅助触点、接近传感器和其他类似的操作设备。此外，1761-L20BWA-5A具有8个继电器输出通道，可在直流和交流电压下工作，如24-125 VDC或120/240VAC。这些继电器输出通道具有单独的隔离功能。这些继电器输出通道可用于驱动和激励电气负载，包括螺线管或电动驱动设备，指示设备，如指示灯，测深设备和电机控制设备，如电机启动器。内置模拟输入兼容+/- 10VDC和+/- 20ma的模拟信号范围，而提供的模拟输出通道能够提供0-10VDC或4- 20ma。

1761-L20BWA-5A通过RS-232接口连接到对等网络。它采用DNI (Device Net Interface)接口，响应速度快，成本低，可靠性高。点对点通信可以通过DF1半双工和全双工协议实现。

1761-L20BWA-5A支持梯形逻辑编程语言。1761-L20BWA-5A控制器对于一个典型的500条指令程序的执行时间为1.56毫秒，吞吐量为1.85毫秒。

1761-L20BWA-5A 是一款可编程逻辑控制器

The Allen-Bradley 1761-L20BWA-5A is a Programmable Logic Controller (PLC) that belongs to the Bulletin 1761 MicroLogix 1000 product family.  This MicroLogix controller is designed with built-in discrete and analog input channels, enabling this controller to implement automatic and manual control of discrete and analog loop control.  provided with analog control loop capability.  The 1761-L20BWA-5A is especially compatible for use as automation controller of micro and small machines and processes.  It is a general-purpose controller that is ideally used in machine control, material handling, valve sequencing and similar applications of simple complexity.

This 1761-L20BWA-5A is powered by an external AC supply voltage range of 85-264V AC with rated power consumption of 30VA when supplied with 120VAC and 36VA when operated by 240VAC nominal input supply and rated to withstand an inrush current of 30A for 8 ms.

The 1761-L20BWA-5A is provided with Twelve (12) Digital input channels, with nominal operating voltage of 24VDC.  These input channels are generally used for interfacing ON/OFF devices such as switches, auxiliary contacts, proximity sensors and other similarly operating devices.  Additionally, the 1761-L20BWA-5A has Eight (8) Relay output channels that may be operated in both DC and AC voltages such as 24-125 VDC or 120/240VAC.  These relay output channels come with individual for individual isolation.  These relay output channels can be used to actuate and energize electrical loads including solenoid or motorized actuated devices, indicating devices such as pilot lamps, sounding devices, and motor control devices such as motor starters.  The built-in analog inputs are compatible with analog signal ranges of +/- 10VDC and +/-20mA while the provided analog output channels are able to deliver 0-10VDC or 4-20 mA.

An RS-232 port connects the 1761-L20BWA-5A to a peer-to-peer network.  It uses the Device Net Interface (DNI) for fast response, low cost, and reliability.  Point-to-point communications can be implemented via the DF1 Half- and Full-Duplex protocols.

The 1761-L20BWA-5A supports ladder logic programming language.  The 1761-L20BWA-5A controller has an execution time of 1.56 milliseconds and a throughput of 1.85 milliseconds for a typical 500 instructions program.