1760-L18AWA-EX | Allen-Bradley Pico 18-Point AC Programmable Controller Description

The 1760-L18AWA-EX is a compact logic controller used primarily for simple automation tasks in small machines or subsystems. It manages discrete devices like relays, contactors, lights, sirens, and valves based on programmed logic. It supports basic functions such as timing, counting, and scheduling using its real-time clock. This controller is ideal for micro-automation because of its all-in-one design, including a built-in display and keypad. With 12 inputs and 6 relay outputs, it suits standalone applications without needing a full PLC. It’s often found in HVAC systems, lighting controls, pump automation, and small assembly systems.

This controller features 12 discrete AC inputs and 6 relay outputs built directly into the base unit. The inputs support 100–240V AC signals, which allows them to be used in standard industrial electrical systems. The outputs are relay-type, capable of switching up to 250V AC, with a maximum thermal current of 8A per contact. Each input is optically isolated from the outputs, reducing the risk of electrical interference. The input delay times are fixed at 80 ms (ON) and 20 ms (OFF) to ensure stable detection. The outputs support a switching frequency of 2 Hz for resistive loads and 0.5 Hz for inductive loads.

Yes, the 1760-L18AWA-EX includes a built-in LCD display and keypad for local interaction. The display allows real-time monitoring of inputs, outputs, timer values, and program status. It can be used for quick diagnostics and visual confirmation during troubleshooting. The keypad lets users navigate menus, adjust parameters, and force I/O directly. Although it’s not a full HMI, this local interface is very helpful in small systems. It supports intuitive operation without needing a computer or external device.

The controller does not support Ethernet or serial communication protocols natively but can be connected to a PC using the 1760-CBL-PM02 programming cable. Through this cable, the user can upload, download, or monitor ladder logic programs. Communication is mainly used for configuration, monitoring, and maintenance rather than real-time data exchange with other PLCs. No networking functions like Modbus or DeviceNet are included. For remote diagnostics or centralized control, a more advanced PLC system would be required. However, for standalone use, this basic cable communication is sufficient.

The controller is programmed using Ladder Diagram (LD), a graphical programming language that mimics electrical relay logic. It is intuitive for electricians and maintenance personnel familiar with relay circuits. Users can create logic sequences involving timers, counters, and real-time clock events. The programming software is simple and designed for quick learning and deployment. Programs can be transferred via the 1760 programming cable. Even basic users can efficiently implement useful automation routines without advanced training.