Omron CK3W-EXS02 Expansion Slave Unit

Technical Overview

The Omron CK3W-EXS02 is a highly reliable Expansion Slave Unit designed specifically for the CK3M and CK5M Programmable Multi-Axis Controllers. Installed on an expansion rack adjacent to the power supply unit, it enables robust system scalability by communicating with the CK3W-EXM01 Expansion Master Unit via a dedicated expansion cable. By deploying this slave unit, engineers can seamlessly expand their control network, adding up to four additional CK3W units (or two CK3W-AX axis units) per rack to accommodate extensive I/O and motion requirements without compromising the controller's ultra-fast 50 μs multi-axis synchronization speeds.

Key Features

Supports expansion of CK3M and CK5M Series programmable multi-axis controller systems.
Accommodates up to four CK3W Units or two CK3W-AX Units on a single expansion rack.
Rugged industrial design conforming to IEC 60068-2-6 (vibration) and IEC 60068-2-27 (shock) standards.
Ships with one CK3W-TER11 End Cover included for immediate integration.
Efficient low-power operation, consuming a maximum of only 0.2 W at 5 VDC.
Enables flexible PMAC architecture development by extending high-precision positioning interfaces.

Technical Specification Matrix

Parameter	Value
Power Consumption	5 VDC, 0.2 W max.
Dimensions (H x D x W)	90 mm x 80 mm x 31.6 mm
Weight	130 g max. (including End Cover)
Ambient Operating Temperature	0 to 55°C
Ambient Operating Humidity	10% to 95% (with no condensation or icing)
Vibration Resistance	Conforms to IEC 60068-2-6 (5 to 8.4 Hz with 3.5-mm amplitude, 8.4 to 150 Hz, 9.8 m/s²)
Shock Resistance	Conforms to IEC 60068-2-27 (147 m/s², 3 times each in X, Y, and Z directions)
Insulation Resistance	20 MΩ min. between isolated circuits (at 100 VDC)
Dielectric Strength	510 VAC between isolated circuits for 1 minute (leakage current 5 mA max.)
Certifications	cULus, EU: EN 61326, RCM, KC

Industrial Applications

1. Precision Semiconductor Manufacturing Equipment

Expanding the multi-axis motion control footprint for semiconductor wafer handling and nanoscale precision alignment platforms.

Problem Solved

Physical space constraints and hard limits on the main CPU rack prevent the addition of necessary analog/encoder modules. The CK3W-EXS02 safely distributes the multi-axis I/O load across a separate chassis while maintaining ultra-fast synchronized data acquisition.

Nanoscale positioningMulti-Axis ControlExpansion RackPMAC Architecture

2. Advanced Automated Optical Inspection (AOI) Systems

Enhancing the core control architecture of high-speed AOI machines that require multiple camera positioning axes and synchronized Galvo laser interfaces.

Problem Solved

Overcomes processing and modular bottleneck issues in the main controller by allowing additional axis interfaces to be networked seamlessly without degrading the 50 μs/5-axis feedback speed.

Galvo Scanner controlAOI SystemHigh-speed feedbackEtherCAT expansion

3. High-Speed Packaging & CNC Machining

Networking auxiliary CNC axes, digital I/O units, and synchronized servo drives in harsh, vibration-prone industrial environments.

Problem Solved

Industrial CNC and packaging environments frequently experience heavy mechanical shocks and broad temperature fluctuations. Built to withstand 147 m/s² shock impacts and ambient temperatures up to 55°C, this unit provides a highly resilient extension for critical automated tooling.

Vibration Resistance IEC 60068CNC machiningServo synchronizationShock resistant 147 m/s²