Brake chopper terminal EL9576
Error LED
Temp R Warning
Temp Warning
Out Voltage OK
Chopper ON 
Under Voltage 
Over Voltage 
Run LED 
Power contact
Power contact
Top view 
Contact assembly 
extended shock and vibration range 25g

EL9576 | Brake chopper terminal

The EL9576 EtherCAT Terminal contains high-performance capacitors for stabilising supply voltages. The EL9576 can be used in conjunction with the EL70x1 stepper motor terminals, the EL73x2 DC motor terminals and the EL72x1 servomotor terminals. 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, thus preventing overvoltages. If the regenerative energy exceeds the capacity of the capacitors, energy can be dissipated via an external braking resistor. The corresponding threshold can be directly parameterised in the TwinCAT System Manager.

Technical data EL9576 | ES9576
Technology brake chopper
Nominal voltage arbitrary up to 72 V
Capacity 155 µF
Ripple current (max.) 10 A
Internal resistance < 5 mΩ
Chopper voltage adjustable
Recommended ballast resistor 10 Ω, typ. 100 W (dependent on application)
Overvoltage control range typ. 1 V, parameterisable by CoE data
Ballast resistor clock rate load-dependent, max. 100 µs, 2-point control
Electrical isolation 1500 V (E-bus/field potential)
Diagnostics temperature on board, over-/undervoltage
Special features adjustabel threshold
Weight approx. 90 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 CE, UL
ZB8110 external braking resistor, 10 Ω, 100 W, for EL9576 brake chopper terminal and for KL9570 Bus Terminal