1760-L12AWA-NC | Allen-Bradley Pico Controller

The 1760-L12AWA-NC is a compact logic controller from Allen-Bradley’s Pico series, designed for small automation tasks. It features 8 digital inputs and 4 relay outputs, allowing basic logic operations such as timing, counting, and on/off control. Users program it via ladder diagrams using a PC and the 1760-CBL-PM02 communication cable. Though compact, it supports simulation and real-time monitoring, making it ideal for training, prototyping, and light industrial use. A power/run LED indicator, optional memory module, and advanced diagnostic functions enhance usability. It's widely used for lighting control, HVAC, pumps, and compact machine automation tasks.

The controller operates on a wide input voltage range of 100 to 240 VAC at 50/60 Hz, suitable for direct connection to industrial and commercial power systems. This eliminates the need for external power adapters or DC converters in many applications. The input voltage also powers the logic circuitry and relays, simplifying system wiring. Proper overcurrent protection (at least 1 A) is required to safeguard the device. The internal power regulation ensures stable operation across the full voltage range. It is recommended to use surge-protected circuits, especially in industrial environments.

The 1760-L12AWA-NC provides a total of 12 I/O points, consisting of 8 digital inputs and 4 relay outputs. The inputs can accept 120–240V AC signals, making them compatible with standard industrial pushbuttons, switches, or sensors. The relay outputs are dry contacts rated for switching loads like solenoids, contactors, or signal lamps. Output contact ratings must not be exceeded to ensure longevity. The controller supports I/O expansion via Pico Expansion I/O modules, allowing greater flexibility. I/O states can be monitored in real-time via the PC interface or on-screen diagnostic functions.

Programming is done through ladder diagram logic using Allen-Bradley's PicoSoft software, which connects to the controller via the 1760-CBL-PM02 cable. The software provides a graphical interface where users can create timers, counters, and logical conditions. Programs can be simulated on-screen or directly downloaded to the device for real-time execution. The interface allows monitoring of inputs, outputs, and internal variables. PicoSoft also includes diagnostic tools for troubleshooting program flow or hardware errors. While programming is relatively simple, it offers sufficient depth for basic automation projects.

No, the 1760-L12AWA-NC has been officially discontinued and marked as obsolete by Rockwell Automation. Although no longer in production, the controller is still available through surplus distributors and secondary markets. Rockwell recommends transitioning to newer Micro800 or CompactLogix platforms for long-term support and modern functionality. Despite this, many systems continue to rely on the 1760-L12AWA-NC due to its simplicity and reliability. Spare parts, such as memory modules and programming cables, can still be sourced. If using this device in ongoing operations, maintaining backups and spare units is highly advised.