Mounting and cabling
EP9224-0037
19
Version: 1.0
3.3
Power supply
EtherCAT Box modules are supplied with two electrically isolated supply voltages:
Control voltage U
S
: 24 V
DC
Power is supplied to the fieldbus, the processor logic, the inputs and the sensors from the 24 V
DC
control
voltage U
S
. The control voltage is electrically isolated from the fieldbus circuitry.
Peripheral voltage U
P
: 24 V
DC
The peripheral voltage U
P
supplies the digital outputs; it can be brought in separately. Hence, if the load
voltage is switched off, the fieldbus function as well as the supply and function of the inputs are retained.
3.3.1
Connection
The supply and forwarding of the supply voltages takes place via two 5-pin ENP B17 hybrid connectors at
the lower end of the modules:
• X70 "IN": left B17 connector for feeding the supply voltages
• X71 "OUT": right B17 connector for routing the supply voltages
3
4
2
1
1
2
4
3
6
7
9
8
5
9
8
6
7
5
IN
OUT
Fig. 7: B17 pin assignment
Pin
Voltage/signal
Core colors
1)
1
Tx+
yellow
2
Rx+
white
3
Rx-
blue
4
Tx-
orange
5
GND
P
: ground for U
P
grey
6
FE: functional earth
green-yellow
7
U
P
: peripheral voltage, +24 V
DC
black
8
GND
S
: ground for U
S
blue
9
U
S
: control v24 V
DC
brown
1)
The core colors apply to cables, connectors and flanges of the type
• Beckhoff ZB7203-xxxx
• Beckhoff ZK7208-xxxx