Configured for high-speed multi-axis motion synchronization and SECS/GEM host communications in EtherCAT deterministic networks, the Omron NJ501-1340 (NJ501 Motion Controller) provides direct physical/electrical execution.

Controller Architecture & Designation

• NJ501: Base Machine Automation Controller Unit
• 13: CPU Performance Class supporting 16 Synchronous Motion Axes
• 4: Integrated SECS/GEM Communication Middleware
• 0: Standard HW Variant Revision Level

Operational Parameters

Network Determinism & Firmware Compatibility

The controller utilizes an integrated EtherCAT Master engine to sustain a primary task cycle time of 0.5 ms across up to 16 controlled axes. Deterministic cycle execution prevents frame jitter during real-time motion interpolation. Firmware flash compatibility checks execute upon initialization to verify image integrity across internal memory blocks and external expansion racks prior to enabling CJ backplane communication.

Standard Package Contents

• 1 x Omron NJ501-1340 Motion Controller Unit
• 1 x End Cover Block (CJ1W-TER01)
• 1 x Terminal Connector Assembly
• 1 x Safety and Technical Manual Sheet

System Mounting & Wiring Instructions

• Mount the controller onto a standard 35 mm DIN rail, securing end brackets on both sides to prevent lateral movement.
• Maintain at least 50 mm clearance above and below the housing for vertical convection air dissipation.
• Use double-shielded Category 5e or higher SF/UTP cables for EtherCAT topology to suppress high-frequency noise.
• Connect the functional ground terminal (100 ohm or less ground resistance) using a wire cross-section of at least 2 mm sq.

Frequently Asked Questions

• What is the primary task cycle time achievable by this motion CPU?

  The hardware engine delivers a fixed primary deterministic task execution cycle down to 0.5 ms for cyclic data exchange and trajectory generation across synchronized servomotor nodes.

• Does the controller require a separate power supply unit on the backplane?

  Yes, the unit must be powered by a dedicated NJ-series power supply module installed on the left side of the backplane stack to feed the internal CJ bus logic circuitry.

• What communication protocols are natively hosted on the primary Ethernet ports?

  The unit features dedicated RJ45 physical layer ports supporting EtherCAT Master motion synchronization and EtherNet/IP for enterprise host networking and CIP messaging.

• Is hot-swapping allowed for CJ series I/O modules connected to the controller bus?

  Hot-swapping CJ I/O modules on the rack is not supported while the main CPU power supply is energized. Removing or adding modules under voltage triggers an I/O bus stop fault.

• How is backplane power bus current consumption managed across connected modules?

  Total 5 VDC bus current drawn by attached CJ I/O units must not exceed the maximum current output rating supplied by the selected NJ power supply module mounted adjacent to the CPU.

• What type of cable grounding is mandatory for the EtherCAT network ports?

  EtherCAT transmission cables require industrial grade STP/SFTP double-shielded cabling with metallic RJ45 connector shells grounded directly to the panel Earth chassis through the port jack.

• How does firmware revision alignment impact system backup restoration?

  Backing up or restoring binary projects requires Sysmac Studio software matching the internal CPU firmware version to ensure proper variable memory mapping and axis allocation tables.

• What is the maximum number of axes supported by this specific CPU variant?

  The unit supports a maximum total of 16 physical axes (including synchronous servo drives) alongside virtual positioning axes without requiring additional expansion hardware cards.