Omron CJ1W-NC482 4-Axis EtherCAT Position Control Unit

Technical Overview

The Omron CJ1W-NC482 is a highly advanced CJ-series position control unit featuring an EtherCAT interface. Capable of controlling up to 4 axes simultaneously, this unit delivers exceptional speed, taking just 0.15 to 0.4 ms to execute a servo start command. It integrates seamlessly into automated systems by combining precision servo control with high-speed I/O communication, allowing direct connectivity with compatible inverters and vision sensors on a single EtherCAT network. The module also includes powerful memory operation functions and supports sophisticated electronic cam synchronization, making it ideal for highly coordinated motion profiles.

Key Features

High-speed positioning operation with 0.15 to 0.4 ms servo start time.
Integrated EtherCAT network supporting a 250 μs minimum communications cycle.
Supports Electronic Cam Synchronization and Memory Operation functions.
Common control interface compatible with standard pulse-train position units.
Allows simultaneous connection of inverters, vision sensors, and I/O devices over EtherCAT.
Built-in support for Servomotor Speed Control and Torque Limit Outputs.

Technical Specification Matrix

Parameter	Value
Number of Axes	4 axes max.
Network Interface	EtherCAT
Communications Cycle	250 μs min.
Internal Current Consumption	460 mA max. at 5 VDC
Start Servo Operation Time	0.15 to 0.4 ms
Ambient Operating Temperature	0 to 55°C
Dimensions (H x D x W)	90 x 65 x 31 mm
Weight	110 g max.
Cable Compatibility	Straight STP (shielded twisted-pair) Category 5 or higher

Industrial Applications

1. High-Speed Electronic Cam Synchronization in Packaging lines

Packaging systems often rely on multi-axis mechanisms to precisely feed materials and actuate sealing heads. This controller seamlessly matches axes without mechanical linkages.

Problem Solved

Eliminates rigid mechanical cams that wear out over time. The integrated electronic cam sync function executes precise multi-axis interpolated movements allowing for instant profile changes between packaging formats.

Electronic Cam Synchronization4 Axes MaxEtherCAT Interface0.15 to 0.4 ms Servo Start

2. Vision-Guided Robotic Assembly

Pick-and-place systems require immediate coordination between vision sensors capturing component orientations and the servos controlling a 4-axis handling gantry.

Problem Solved

Unifies the communication layer by directly connecting vision sensors, I/O, and servos onto a single EtherCAT network. A 250 μs cycle ensures near-instantaneous trajectory correction based on sensor feedback.

250 μs Communications CycleVision Sensor IntegrationI/O Node SupportEtherCAT

3. Torque-Monitored Automated Press Stations

In delicate pressing and insertion tasks, equipment must position components precisely but also halt instantly if resistance exceeds mechanical thresholds to prevent part damage.

Problem Solved

Provides direct support for Servomotor Speed Control and Torque Limit Outputs, enabling the system to hold precise coordinates while actively restricting torque applications, protecting fragile assemblies.

Torque Limit OutputsServomotor Speed ControlServo ControlPosition Control Unit