Page top


Programmable Multi-Axis Controller CK3M-series CPU Unit


Multi-axis control with a fastest servo cycle time of 50 μs/5 axes enables precision machining

General Specifications

This section describes the Motion Controller specifications.

Item Specification
Enclosure Mounted in a panel
Grounding Method Ground to less than 100 Ω
Ambient Operating Temperature 0 to 55°C
Ambient Operating Humidity 10% to 95% (with no condensation or icing)
Atmosphere Must be free of corrosive gases.
Ambient Storage Temperature -25 to 70°C (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, acceleration of 9.8 m/s2
100 min each in X, Y, and Z directions
(10 sweeps of 10 min each = 100 min total)
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 with a
leakage current of 5 mA max.
Applicable Standards cULus, EU: EN 61326, RCM, KC, EAC

Performance Specifications

The performance specifications are shown below.

Item CK3M-CPU101 CK3M-CPU111 CK3M-CPU121
Memory Main memory: 1 GB
Built-In Flash Memory: 1 GB
Number of connectable CK3W Units
(when using Expansion Rack)
8 Units max.
Or 4 CK3W-AX Units max.
External connection terminals No EtherCAT For EtherCAT communications
RJ45 × 1 (Shield supported)
For Ethernet communications
RJ45 × 1 (Shield supported)
USB port
For external memory connection, USB 2.0 host × 1 Type A
Motion control CK3W-AX
number of
controlled axes
16 axes (when using four CK3W-AX Units)
Control method Speed and torque control using analog output
Stepper motor control using pulse output
Commutation control using DirectPWM output
EtherCAT Maximum
number of
controlled axes
None 4 axes 8 axes
Control method Issuing control commands using EtherCAT
Communications protocol None EtherCAT protocol
Baud rate 100 Mbps
Physical layer 100BASE-TX (IEEE 802.3)
Topology Line, daisy chain, and branching
Transmission media Twisted-pair cable of category 5 or higher
(doubleshielded cable with aluminum tape
and braiding)
Transmission distance Distance between nodes: 100 m or less
Maximum number of slaves 32
Range of node addresses
that can be set
1 to 32
Baud rate 100 Mbps
Physical layer 100BASE-TX (IEEE 802.3)
Frame length 1,514 bytes max.
Media access method CSMA/CD
Modulation Baseband
Topology Star
Transmission media Twisted-pair cable of category 5, 5e, or higher (shielded cable)
Maximum transmission
distance between
Ethernet switch and node
100 m
Maximum number of
cascade connections
There are no restrictions if an Ethernet switch is used.
USB port Physical layer USB 2.0 compliant, type A connector.
Output voltage: 5 V, 0.5 A max.
Transmission distance 3 m max.
Current consumption CK3M-CPU101: 5 VDC 7.2 W max.
CK3M-CPU111/CPU121: 5 VDC 7.8 W max.
(including End Cover)
Dimensions (height × depth × width) 90(H)/80(D)/63.2(W)
Weight (including End Cover) 220 g max. 230 g max.