Technical Overview

The Omron CK3W-EXM01 is an Expansion Master Unit designed for the CK3M and CK5M Series Programmable Multi-Axis Controllers. It allows system scalability by enabling the connection of up to four CK3W units (or up to two CK3W-AX units) per expansion rack. The unit is installed adjacent to the right side of the CPU Unit and communicates with an Expansion Slave Unit (CK3W-EXS02 or CK5W-EXS01) via a 0.3m expansion cable (CK3W-CAX003A). This modular expansion architecture is essential for realizing complex automation tasks, including high-speed multi-axis motion control and precise path control in advanced manufacturing environments.

Key Features

Enables expansion of the CK3M/CK5M-series Multi-Axis Controllers [1.3].
Supports connection of up to four CK3W units or two CK3W-AX units on the expansion rack.
Connects to an Expansion Slave Unit (CK3W-EXS02 or CK5W-EXS01) using a standard 30 cm expansion cable (CK3W-CAX003A).
Mounts directly to the right side of the CPU Unit.
Provides high reliability with conformity to IEC 60068-2-6 and IEC 60068-2-27 for vibration and shock resistance.
Meets cULus, EU: EN 61326, RCM, KC, and EAC applicable standards.

Technical Specification Matrix

Parameter	Value
Product Type	Expansion Master Unit [1.1]
Power Consumption	5 V, 0.4 W max
Dimensions (H x D x W)	90 mm x 80 mm x 31.6 mm
Weight	100 g max
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)
Shock Resistance	Conforms to IEC 60068-2-27 (147 m/s2)
Insulation Resistance	20 MΩ min. between isolated circuits (at 100 VDC)
Dielectric Strength	510 VAC between isolated circuits for 1 minute (5 mA max leakage)
Grounding Method	Ground to less than 100 Ω
Enclosure	Mounted in a panel

Industrial Applications

1. High-PrecisionCNCMachiningExpansion

InadvancedCNCmachineryrequiringpreciseinterpolation, themainCPUrackmayrunoutofspaceforencoder/axisunits.TheCK3W-EXM01linksanexpansionracktoaccommodateadditionalCK3W-AX(AxisInterface)orCK3W-ECS(EncoderInput)units[1.1].

Problem Solved

Overcomes the limitation of maximum installable units on a single CPU rack, allowing scaling up for multi-axis configurations without compromising synchronization.

Multi-Axis InterpolationMotion Controller ExpansionCNC Path ControlServo Cycle Synchronization

2. Complex Robotics Assembly Cell Extension

For automated cells utilizing multi-arm robots, extensive digital I/O and analog input units are required. The CK3W-EXM01 expansion master facilitates adding CK3W-MD (Digital I/O) and CK3W-AD (Analog Input) units onto a secondary rack.

Problem Solved

Resolves I/O node capacity constraints in complex robotic cells, distributing power and data while withstanding the 147 m/s2 shock resistance typically found in robust industrial panels.

Robotic AssemblyI/O ExpansionShock ResistanceProgrammable Multi-Axis Controller

3. High-Speed Laser Cutting Integration

In laser processing systems with multiple galvo scanners, high-speed command generation is critical. The CK3W-EXM01 bridges the main controller to an expansion rack where additional CK3W-GC (Laser Interface Units) are housed.

Problem Solved

Enables integration of multiple XY2-100/SL2-100 compatible galvo scanners on a single modular system by scaling the backplane bus, ensuring synchronized precise path control across laser heads.

Galvo Scanner InterfaceLaser Etching SystemBackplane ExpansionHigh-Speed Path Control

Omron CK3W-EXM01 Expansion Master Unit

Omron CK3W-EXM01 Expansion Master Unit

Technical Overview

Key Features

Technical Specification Matrix

Industrial Applications

1. High-PrecisionCNCMachiningExpansion

2. Complex Robotics Assembly Cell Extension

3. High-Speed Laser Cutting Integration