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CK3W Encoder Input Unit


Supports encoder protocols used for high-precision stage control

General 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

Encoder Input Unit Specifications

power supply
Rated output voltage 5 VDC
Output voltage range 4.9 to 5.25 VDC (5 VDC +5%/-2%)
However, the total output current of each Unit is 1 A or less.
Maximum output current 500 mA/channel or less
Supported protocol BiSS-C, Endat2.2, and R88M-1L[]/-1M[] Motor built-in encoder
Clock output *1 EIA standard RS-422A line driver level
Data I/O EIA standard RS-485 line driver/receiver level
Maximum baud rate *2 BiSS-C: 2 MHz
Endat2.2: 2 MHz
Maximum transmission
distance *3
BiSS-C (Baud rate: Transmission distance)
250 kHz: 95 m
1 MHz: 20 m
2 MHz: 8 m
Endat2.2 (Baud rate: Transmission distance)
500 kHz: 100 m
1 MHz: 45 m
2 MHz: 10 m
R88M-1L[]/-1M[] Motor built-in encoder: 50 m
Isolation method Not isolated (between internal circuit and encoder circuit)
Circuit configuration 3834_sp_2_1
Terminal connection
R88M-1L[]/-1M[] Motor built-in encoder
Power consumption 5 VDC 0.6 W max.
24 VDC 6.8 W max.
Dimensions (height × depth × width) 90(H)/80(D)/63.2(W)
Weight 200 g max.

*1. When you use a reset command ($$$) to reset the Unit, the clock output will stop.
*2. For the R88M-1L[]/-1M[] Motor built-in encoder, you cannot set a baud rate.
*3. The function of propagation delay compensation for Endat and BiSS-C is not available with the CK3W-ECS Units.