Mounting and wiring
EK3100
17
Version: 1.5
LED
If the power supply unit is connected correctly and the power supply is switched on, the two upper LEDs in
the terminal prism are green. The left-hand LED (Us) indicates the supply for the Bus Coupler electronics.
The right-hand LED (Up) indicates the supply for the power contacts. The other LEDs indicate the state of
the E-bus. The detailed meanings of the LED displays are described in the chapter
LED displays
.
PE power contacts
NOTE
Power contact PE
The PE power contact must not be used for other potentials.
3.3.2
PROFIBUS interface (X001)
PROFIBUS, 9-pin D-sub
Pin 6 transfers 5 V
DC,
pin 5 transfers GND for the active termination resistor. These must never be used for
other functions, as this can lead to destruction of the device.
Pins 3 and 8 transfer the PROFIBUS signals. These must never be swapped over, as this will prevent
communication.
Fig. 9:
PROFIBUS, Pin assignment D-Sub
The Profibus bus line is connected via a 9-pin D sub with the following pin assignment:
Pin
Assignment
1
Shielding
2
not used
3
RxD/TxD-P
4
not used
5
GND
6
+5 V
DC
7
not used
8
RxD/TxD-N
9
not used
cable colors
PROFIBUS line
D sub
B red
Pin 3
A green
Pin 8
