Current consumption via E-bus

All EtherCAT devices that actively participate in data exchange require a certain current from the E-bus (see Technical data: "Current consumption via E-bus").
The information about the current required from the E-bus supply is available online and in the catalog for each terminal and each module.

The precalculated theoretical maximum E-bus current is displayed in the TwinCAT System Manager. A negative total amount in conjunction with an exclamation mark indicates that the value is too low.

The E-bus system voltage is provided by Bus Couplers and power supply units (see chapter Power supply).