Mounting and wiring
EK9300
21
Version: 3.2.6
Fig. 16: Bus Coupler EK9xxx power supply
Requirements for the 24 V power supply
In order to guarantee the operation of the Bus Coupler and the terminal segment in all cases, the power
supply unit must supply 2.0 A at 24 V.
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 LED (Us) indicates the CPU supply. The right LED (Up) indicates the
terminal supply. The other LEDs indicate the Terminal Bus status. A detailed description of the LEDs can be
found in section "LED troubleshooting".
PE power contacts
NOTE
Power contact “PE”
The "PE" power contact must not be used for other potentials.