EtherCAT Coupler with integrated digital inputs/outputs EK1828
Signal LEDs
1…8
Signal LEDs
9…16
Power contact +24 V
Power contact 0 V
+24 V Us 
Input 1 
Input 3 
Output 1 
Output 3 
+24 V UP 
Output 5 
Output 7 
0 V Us
Input 2
Input 4
Output 2
Output 4
0 V UP
Output 6
Output 8
Link/Act In
Signal input
EtherCAT
Link/Act Out
Signal output
EtherCAT

EK1828 | EtherCAT Coupler with integrated digital inputs/outputs

The EtherCAT Couplers from the EK18xx series combine the functionalities of the EK1100 EtherCAT Coupler with standard digital I/Os in one housing. This results in a compact design that is especially suitable for applications with a low number of I/Os. Like the EK1100, the EK18xx coupler can be extended by all EL/ES terminals. The digital I/Os are implemented with a 1-wire technique. The wiring can be implemented without tools using a direct plug-in technique with solid wire conductors or ferrules.

The EK1828 has four digital inputs and eight digital outputs.

Technical data EK1828
Task within EtherCAT system coupling of EtherCAT Terminals (ELxxxx) to 100BASE-TX EtherCAT networks
Data transfer medium Ethernet/EtherCAT cable (min. CAT 5), shielded
Distance between stations max. 100 m (100BASE-TX)
Number of EtherCAT Terminals up to 65,534
Protocol EtherCAT
Delay approx. 1 µs
Data transfer rates 100 Mbaud
Bus interface 2 x RJ 45
Nominal voltage 24 V DC (-15 %/+20 %)
Current supply E-bus 1000 mA
Current consumption from UP 40 mA + load
Current consumption from US 100 mA + (total E-bus current/4)
Number of inputs 4
Specification EN 61131-2, type 1/3
“0“ signal voltage -3…+5 V (EN 61131-2, type 1/3)
“1“ signal voltage 15…30 V (EN 61131-2, type 3)
Input filter 3.0 ms
Input current typ. 3 mA (EN 61131-2, type 3)
Number of outputs 8
Load type ohmic, inductive, lamp load
Max. output current 0.5 A (short-circuit-proof) per channel
Short circuit current typ. < 2 A
Reverse voltage protection yes
Breaking energy < 150 mJ/channel
Switching times typ. TON: 60 µs, TOFF: 300 µs
Electrical isolation 500 V (power contact/supply voltage/Ethernet),
500 V (E-bus/field potential)
Conductor types solid wire, stranded wire and ferrule
Conductor connection solid wire conductors: direct plug-in technique; stranded wire conductors and ferrules: spring actuation by screwdriver
Rated cross-section solid wire: 0.08…1.5 mm²; stranded wire: 0.25…1.5 mm²; ferrule: 0.14…0.75 mm²
Operating/storage temperature 0…+55 °C/-25…+85 °C
Relative humidity 95 %, no condensation
Vibration/shock resistance conforms to EN 60068-2-6/EN 60068-2-27/29
EMC immunity/emission conforms to EN 61000-6-2/EN 61000-6-4
Protect. class/installation pos. IP 20/variable
Approvals CE
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