BECKHOFF EP2xxx - Manual (Page 87)

Mounting and cabling
Fig. 81: EtherCAT Box, Connectors for power supply
Table 6: PIN assignment
Pin Voltage
1 Control voltage Us, +24 V
DC
2 Auxiliary voltage Up, +24 V
DC
3 GNDs* *) may be connected internally to each other depending on the module: see specific
module descriptions
4 GNDp*
The pins M8 connectors carry a maximum current of 4 A.
Two LEDs display the status of the supply voltages.
Attention
Don't confuse the power connectors with the EtherCAT connectors!
Never connect the power cables (M8, 24 V
DC
) with the green marked EtherCAT sockets of
the EtherCAT Box Modules! This can damage the modules!
Control voltage Us: 24 V
DC
Power is supplied to the fieldbus, the processor logic, the inputs and the sensors from the 24 V
DC
control
voltage Us. The control voltage is electrically isolated from the fieldbus circuitry.
Auxiliary voltage Up 24 V
DC
The Auxiliary voltage Up supplies the digital outputs; it can be brought in separately. If the load voltage is
switched off, the fieldbus functions and the power supply and functionality of the inputs are retained.
Redirection of the supply voltages
The IN and OUT power connections are bridged in the module (not IP204x­Bxxx and IE204x). The supply
voltages Us and Up can thus easily be transferred from EtherCAT Box to EtherCAT Box.
Attention
Pay attention to the maximum permissible current!
Pay attention also for the redirection of the supply voltages Us and Up, the maximum per­
missible current for M8 connectors of 4 A must not be exceeded!
Supply via EP92x4­0023 PowerBox modules
If the machine requires higher current or if the EtherCAT Box Modules are installed far away from the control
cabinet with included power supply, the usage of four cannel power distribution modules EP9214 or EP9224
(with integrated data logging, see www.beckhoff.com/EP9224) is recommended.
EP2xxx 87 Version 2.1.0