Beckhoff EP7402-0057, Manual

Page: 18 / 63

Mounting and cabling
EP7402-0057 18 Version: 1.3
3.2.2 Supply voltages and EtherCAT
3.2.2.1 Input and forwarding
NOTE
Brake chopper required
Overvoltage peaks can occur on the supply voltage U
P
which can destroy the device.
The overvoltage peaks occur during braking operations of the motor or by manually moving objects on the
roller conveyor.
• Use a brake chopper to dissipate overvoltages.
E.g. EP9576-1032 or EL9576 .
The EtherCAT Box is supplied with two supply voltages. The supply voltages are electrically isolated in the
EtherCAT Box.
• Control voltage U
S
• Peripheral voltage U
P
You can connect several EP7402-0057 in series by forwarding the supply voltages and EtherCAT via X71 to
the respective subsequent device.
NOTE
U
P
is not protected against inverse polarity
Defect possible through polarity reversal.
• Make sure that the supply voltage U
P
is connected correctly.
Input X70 Forwarding X71
female
male
male
female
Pin Core color
1)
Function
1 yellow EtherCAT Tx +
2 white EtherCAT Rx +
3 blue EtherCAT Rx -
4 orange EtherCAT Tx -
5 green/yellow FE
6 grey GND
P
7 black U
P
: 24 V
DC
8 blue GND
S
9 brown U
S
: 24 V
DC
1)
The wire colors apply to cables of the type ZK7314-3xxx-Axxx. See chapter Accessories [
}
54] .