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.