NJ501-1420 – Machine Automation CPU for Multi-Axis Control
The Omron NJ501-1420 is a CPU unit from the NJ501 series, built for machine automation systems that require multi-protocol networking and real-time control. It supports up to 2560 I/O points and communicates via EtherCAT, EtherNet/IP, and USB at 100 Mbps. Program capacity reaches 32K Words, with 20 MB program memory, 4 MB data memory, and 6 MB variable memory — enough for complex motion and logic sequences. Expandability goes to 40 modules across 3 racks, making it suitable for medium to large automation cells. Operates on a 5 V DC supply via DIN rail mount, in ambient temperatures 0 to 55 °C. Supports ladder diagram and structured text programming through SYSMAC Studio.
How This Differs from the CP1L Compact PLCs
Software environment differs: NJ501 uses SYSMAC Studio; CP1L uses CX-One. NJ501 supports up to 40 expansion modules versus 3 for CP1L-M30DT-D, so a panel designed around CP1L must be rewired and reprogrammed if moving to NJ501. Power supply requirements also differ — NJ501 operates at 5 V DC (from backplane), while CP1L-M30DT-D runs on 24 V DC directly. Check the existing system voltage before considering a cross-grade.
Lifecycle and Sourcing Reality
The battery backup feature preserves volatile memory during power loss, important for production uptime and maintenance planning. To confirm fit for your BOM line and lead time, submit an RFQ. The unit is specified to order; typical supply posture is quoted per request.
Integration and Compliance Notes
DIN rail mounting, no integral display — all interaction via SYSMAC Studio over Ethernet or USB. Support for EtherCAT drives and EtherNet/IP remote I/O means it integrates into a network-based control architecture. Approved by CE, cULus, KC, Lloyd, and NK — sufficient for machinery export to EU, UL-recognized markets, Korea, and maritime applications. No RoHS or REACH statement is part of this listing. Operating temperature range 0 to 55 °C covers most indoor panel environments; derate if using closely packed modules near the upper limit.