OMRON PLC NC Unit CJ1W-NC413 CJ1W-NC413 CJ1WNC413

Omron CJ1W-NC413 | CJ I/O Bus 4-Axis Position Control Unit — 500 kHz Pulse Output / S-Curve / Interpolation

Four Independent Pulse-Train Axes on One CJ Slot

The CJ1W-NC413 adds four simultaneous pulse-train positioning axes to a CJ-series PLC from a single special I/O slot. Each of the four channels generates pulse output at up to 500 kHz — the frequency ceiling that determines how finely and how quickly each axis can be driven in a pulse-train system. Higher pulse frequency allows faster positioning or finer resolution depending on the connected drive's step count. The NPN open-collector outputs connect directly to stepper drivers or servo drives that accept pulse/direction or CW/CCW command inputs.

The four RS-422 line driver inputs accept quadrature encoder feedback for each axis — RS-422 for noise immunity over longer cable runs, with NPN, PNP, and no-voltage input modes also supported for different encoder types. This input flexibility means the module works with the range of encoders typically found across different drive manufacturers.

Motion functions supported include trapezoidal and S-curve acceleration/deceleration profiles, direct ladder positioning commands, point-to-point position and speed control, linear interpolation between axes, and memory-based positioning data storage. For machines running repeat indexing cycles or multi-step positioning sequences, the memory-based approach stores position tables in the module rather than computing them in the PLC scan.

Key Specifications

CJ1W-NC413 in the NC_3 Family Context

Within Omron's CJ NC unit family, the NC413 designation identifies the 4-axis pulse-train configuration. The axis count drives the width — the 31mm single-slot format accommodates 4 channels within one CJ rack position. For applications needing fewer axes, the NC213 (2-axis) or NC113 (1-axis) variants share the same architecture. For the CJ1W-NC413, the FCN connector format and the NPN open-collector output type determine direct field wiring and drive compatibility — confirm both against the installed drive specifications before ordering a replacement.

FAQ

Q1: What motion applications suit the CJ1W-NC413?

Point-to-point positioning on stepper or servo axes: indexing machines, transfer units, compact packaging equipment, pick-and-place systems, and multi-axis positioning where the CJ-series PLC is already present and pulse-train motion is the preferred method. Four axes from one slot suits machines needing several independent positioning channels tightly integrated with PLC logic.

Q2: Why is the 500 kHz pulse output important?

Pulse frequency determines the maximum commanded velocity for a given drive step resolution. At 500 kHz, the module covers both high-speed positioning and fine-resolution applications within the same hardware. Lower-spec pulse units cap velocity earlier or require coarser step settings to compensate.

Q3: The module uses NPN open-collector output. What drives are compatible?

Stepper drivers and servo drives that accept 5V or 24V pulse/direction or CW/CCW NPN pulse-train command inputs. For drives using source-type (PNP) or differential RS-422 pulse inputs, the CJ1W-NC431 variant or an external signal conversion interface is required.

Q4: Does the FCN connector plug come with the module?

No. The FCN-format field connector plug is not included. The two FCN connectors on the module accept the mating FCN plug wired to the drive and encoder cables. Order the correct FCN plug size for the wiring gauge in the installation.

Q5: What should be verified when replacing a CJ1W-NC413?

Confirm the installed module is the 4-axis NC413 specifically — the axis count and motion program allocation in the CJ PLC are built around this variant. Verify the NPN open-collector output type against the connected drive's command input specification. Confirm FCN connector configuration matches the existing field wiring.