8-channel digital output terminal 30 V AC/DC, 2 A, solid state EL2788
Signal LEDs
Power contact
+24 V
Power contact 0 V
Output 1 
Output 2 
Output 3 
Output 4 
Output 5 
Output 6 
Output 7 
Output 8 
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
Top view 
Contact assembly 
extended temperature range
extended shock and vibration range 25g

EL2788 | 8-channel digital output terminal 30 V AC/DC, 2 A, solid state

The digital EL2788 EtherCAT Terminal provides eight switches that can be used like a relay contact for AC/DC voltages. The electronic switch is realised through high-performance MOSFET transistors with low switch-on resistance. The switch itself is not short-circuit proof, but due to its high pulse current capability it can cope with current until an external fuse triggers a switch-off. Wear resistance increases the availability of the application. Resistive and light inductive loads can be switched up to a rated voltage of 30 V AC/DC, completely resistive loads also up to a rated voltage of 48 V DC. High peak voltages and electromagnetic interference pulses are prevented. The power contacts are connected. The outputs of the EL2788 are supplied via the power contacts.

Technical data EL2788
Connection technology 2-wire
Number of outputs 8 x make contacts
Nominal voltage 0…30 V AC/DC (ohmic load only: 0…48 V DC)
Distributed clocks
Max. output current 2 A per channel (∑ 10 A)
Short-circuit current not short-circuit proof, see peak current
Reverse voltage protection
Switching times TON: typ. 1.8 ms, TOFF: typ. 30 ms
Breakdown voltage 80 V
Peak current 5 A (100 ms), < 50 A (10 ms)
Isolation voltage (channel/channel)
Current consumption E-bus typ. 140 mA
Electrical isolation 500 V (E-bus/field potential)
Switching on speed typ. 1.8 ms, max. 5 ms
Switching off speed typ. 30 ms, max. 50 ms
On-resistance typ. 0.03 Ω
Special features substitute for relay contacts, connected with power contacts
Operating/storage temperature -25…+60 °C/-40…+85 °C
Relative humidity 95 %, no condensation
Vibration/shock resistance conforms to EN 60068-2-6/EN 60068-2-27
EMC immunity/emission conforms to EN 61000-6-2/EN 61000-6-4
Protect. class/installation pos. IP 20/variable
Approvals/markings CE, UL
Related products  
EL2798 8-channel digital output terminal, 2-wire, 48 V AC/DC, 2 A