OMRON NJ301‑1100 with NJ‑PA3001 – Integrated PLC and Power Supply for Machine Control

The OMRON NJ301-1100 is a high‑performance programmable logic controller from the NJ series, combined with the NJ‑PA3001 power supply unit to form a complete automation platform. This system is designed for advanced machine control, featuring native support for EtherCAT and EtherNet/IP communication, enabling real‑time motion control and seamless integration with enterprise networks.

NJ301-1100 Controller Core

The NJ301-1100 CPU is built on a 1.3 GHz Intel Atom processor, delivering exceptional processing speed for complex algorithms and multi‑axis motion. It provides 2 MB of program memory and 8 MB of data memory, sufficient for large‑scale applications. The controller supports up to 64 axes of motion control via EtherCAT, with synchronization jitter less than 1 µs, ensuring precise coordination for demanding robotics and packaging machinery.

Built‑in Communication

Dual Ethernet ports are integrated, one for EtherCAT (dedicated) and one for EtherNet/IP or standard TCP/IP networking. The EtherCAT port supports cycle times down to 500 µs, while the EtherNet/IP port allows connection to HMIs, SCADA systems, and other PLCs. The controller also features a USB port for programming and data logging, and a serial RS‑232C port for legacy device interfacing.

NJ‑PA3001 Power Supply Unit

The NJ‑PA3001 is a dedicated power supply module that provides stabilized 24 V DC output to the controller and connected I/O modules. With a rated output of 6 A, it can power a substantial number of local and remote devices. The unit includes overvoltage, overcurrent, and short‑circuit protection, with LED indicators for power good and fault status. Its compact design matches the NJ series footprint, allowing efficient use of panel space.

Programming and Software Environment

Programming is performed using OMRON’s Sysmac Studio software, which supports IEC 61131‑3 languages (ladder, structured text, function block, and sequential function chart). The platform integrates motion, logic, and safety programming in a single environment, reducing development time. The NJ301-1100 also supports OPC UA for secure data exchange with IT systems, facilitating Industry 4.0 initiatives.

Real‑Time Motion Control

The controller executes position, velocity, and torque control with high accuracy, using the built‑in motion control blocks. It supports electronic gearing, camming, and interpolation for linear and circular paths. The system can manage multiple axes independently or coordinated, making it ideal for high‑speed pick‑and‑place, CNC, and printing applications.

Diagnostics and Maintenance

On‑board diagnostics include system event logging, error detection, and status LEDs for power, run, and error states. The controller supports automatic backup to an SD card and firmware updates via the Ethernet port. Remote access through the network enables troubleshooting and monitoring without physical presence.

Environmental and Compliance

Both units operate in ambient temperatures of 0 °C to 55 °C and are rated for pollution degree 2. They carry CE, UL, and cUL certifications, and are compliant with RoHS and REACH regulations. The system is designed for mounting in control cabinets with forced ventilation.

Applications

Typical deployments include advanced packaging lines, semiconductor manufacturing equipment, automotive assembly, and material handling systems. The combination of fast EtherCAT motion and robust EtherNet/IP connectivity makes this PLC system a preferred choice for machine builders requiring high flexibility and performance.

Overall, the OMRON NJ301-1100 with NJ‑PA3001 offers a powerful, integrated solution that streamlines machine automation while ensuring scalability and future‑proof communication.