Buffer capacitor terminal, 80 V, 270 µF EL9571
Power contact
Power contact
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Contact assembly 

EL9571 | Buffer capacitor terminal, 80 V, 270 µF

The EL9571 EtherCAT Terminal contains high-performance capacitors for stabilising supply voltages. Low internal resistance and high-pulsed current capability enable good buffering in parallel with a power supply unit. Return currents are stored, particularly in the context of drive applications, thereby preventing overvoltages. If the regenerative energy exceeds the capacity of the capacitors, energy can be dissipated via an external braking resistor.

For new projects we recommend the EL9576 with its expanded scope of functions.

Technical data EL9571 | ES9571
Technology buffer capacitor
Nominal voltage 80 V
Capacity 270 µF
Internal resistance < 10 mΩ @ 100 kHz
Surge voltage protection > 85 V
Overvoltage control range ±3 V
Braking resistor clock rate load-dependent, 2-point control
Electrical isolation 1500 V (E-bus/field potential)
Weight approx. 75 g
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
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/markings CE
Related products with expanded scope of functions  
EL9576 brake chopper terminal, 72 V, 155 µF
Product announcement
estimated market release on request