EtherCAT P

WARNING

Power supply from SELV/PELV power supply unit!

SELV/PELV circuits (Safety Extra Low Voltage, Protective Extra Low Voltage) according to IEC 61010-2-201 must be used to supply the EtherCAT P Power Sourcing Device (PSD).

Notes:

SELV/PELV circuits may give rise to further requirements from standards such as IEC 60204-1 et al, for example with regard to cable spacing and insulation.
A SELV (Safety Extra Low Voltage) supply provides safe electrical isolation and limitation of the voltage without a connection to the protective conductor,
a PELV (Protective Extra Low Voltage) supply also requires a safe connection to the protective conductor.

CAUTION

Observe the UL requirements

When operating under UL conditions, observe the warnings in the chapter UL Requirements.

EtherCAT P transmits two supply voltages:

Control voltage U_S
The following sub-functions are supplied from the control voltage U_S:

the fieldbus
the processor logic
typically the inputs and the sensors if the EtherCAT P Box has inputs.

Peripheral voltage U_P
The digital outputs are typically supplied from the peripheral voltage U_P for EtherCAT P Box modules with digital outputs. U_P can be supplied separately. If U_P is switched off, the fieldbus function, the function of the inputs and the supply of the sensors are maintained.

The exact assignment of U_S and U_P can be found in the pin assignment of the I/O connections.

Forwarding the supply voltages

Notice

Limited sum current

The sum of the output currents of the EtherCAT P outputs must not exceed 3 A from U_S and 3 A from U_P.

With the EPP1342-0001, the supply voltages are forwarded internally from the EtherCAT P input X50 to the EtherCAT P outputs X51, X52 and X53.

Further Information