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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 US
    The following sub-functions are supplied from the control voltage US:
    • the fieldbus
    • the processor logic
    • typically the inputs and the sensors if the EtherCAT P Box has inputs.
  • Peripheral voltage UP
    The digital outputs are typically supplied from the peripheral voltage UP for EtherCAT P Box modules with digital outputs. UP can be supplied separately. If UP is switched off, the fieldbus function, the function of the inputs and the supply of the sensors are maintained.

The exact assignment of US and UP 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 US and 3 A from UP.

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