The 1761-L20BWA-5A is a MicroLogix 1000 Programmable Controller manufactured by Allen Bradley/Rockwell Automation as part of the MicroLogix 1000 product line. It has a power supply of 120 – 240 volts A.C., 1 analog output, and 4 analog inputs with a wide range of benefits. Allen Bradley 1761-L20BWA-5A controller requires less panel space than other MicroLogix controllers. Besides, it supports a variety of communication networks. The unit has an RS-232 port that connects it to the peer-to-peer network. It features point-to-point and SCADA communications that are available through the DF1 Half- as well as Full-Duplex protocols. Allen Bradley 1761-L20BWA-5A controller supports simple programming. The 1761-L20BWA-5A MicroLogix controller comes with an execution time of 1.56 milliseconds with a typical 500 instructions program output of 1.85 milliseconds. It has input and output choices, including D.C., A.C., or analog for current or voltage inputs, as well as output options including relay, MOSFET, TRIAC, and analog for the current or voltage outputs. This unit also has a large set of instructions with 43 applied control instructions, 12 basic logic instructions, and 14 advanced application-specific instructions. Generally, the MicroLogix 1000 controllers, including the 1761-L20BWA-5A, can be installed in different applications such as custom machinery, building controls, furnaces, cutting tools, dryers, burners, civil engineering, food processing, and specialized industrial machinery among others.

The 1761-L20BWA-5A from Allen-Bradley is a Programmable Logic Controller (PLC) from the MicroLogix 1000 Bulletin 1761 product line. This controller has discrete digital signals and analog inputs built-in, allowing it to handle discrete and analog loops automatically and manually. Analog control loop functionality is included. The 1761-L20BWA-5A is ideal for controlling micro and tiny equipment and processes as an automation controller.

The purpose of the 1761-L20BWA-5A controller is for working in material handling machine controlling valve sequencing, and other low-complexity applications. This 1761-L20BWA-5A is driven by an outside AC supply operational voltage of 85 to 264 volts AC, and it has a 30-volt-ampere rated power usage when provided 120 volts AC supply, as well as 36 volt-amperes by supplying 240 volts AC is rated to sustain 30 amperes inflow current for 8 milliseconds. The 1761-L20BWA-5A has twelve (12) digital input ports and operates at a nominal voltage of 24 volts DC. The 1761-L20BWA-5A also includes 8 relay signals, with voltages of 120 to 240 volts AC and 24 to 125 volts DC.

This 1761-L20BWA-5A relay’s output channels provide individual isolation and are capable of actuating and energizing the electrical loads such as motorized or solenoid-actuated devices, signaling devices like experimental lamps, sounding gadgets, and motor control devices like motor starters. The analog signal varieties of +/- 10 volts DC and +/- 20 milliamperes are supported by the in-built analog inputs, while the analog channel outputs can supply voltage levels of 0 to 10 volts DC or 4 to 20 milliamperes current. The 1761-L20BWA-5A connects to a peer-to-peer network through an RS-232 interface. For quick reaction, cheap price, and dependability, it employs the DNI (Device Net Interface).