System terminal, surge filter and field supply EL9540
Power LED
Power contact
+24 V
Power contact 0 V
Power contact PE
Power contact
Power contact
Power contact
+24 V
0 V
Top view 
Contact assembly 
extended temperature range
extended shock and vibration range

EL9540 | System terminal, surge filter and field supply

The EL9540 system terminal contains an overvoltage filter for the 24 V field supply. The filter protects the EtherCAT Terminal from line-bound surge voltages that can occur due to high-energy, dynamic disturbances such as switching overvoltages at inductive consumers or indirect lightning strikes at the supply lines.

The EL9540 protects the terminal station from damage in particularly harsh environments. The ship classification organisations require the use in shipbuilding applications and in the onshore/offshore sector.

Technical data EL9540 | ES9540
Technology surge filter field supply
Nominal voltage 24 V (-15 %/+20 %)
Surge filter field supply yes
Surge filter system supply
Rated current field supply ≤ 10 A
Rated current system supply
PE connection yes
Electrical isolation 500 V (E-bus/field potential)
Weight approx. 50 g
Operating/storage temperature -25…+60 °C/-40…+85 °C
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
Pluggable wiring for all ESxxxx terminals
Approvals CE, UL, Ex