Weidmüller UC20-SL2000-EC-CAN - UC20-SL2000 Series Troubleshooting

12 LEDindicatorsandtroubleshooting
75Manual u-control2604080000/03/08.2020
Controller/indicator LED Status Recommended action
UC20-SL2000-EC , UC20-SL2000-EC-CAN
Power LED PWR green: supply voltage present, bootloader/rmware
is running
–
System failure SF red: system bus failure Read off the diagnostic message from the engineering
tool and determine which further actions to take
Bus failure BF red: eld bus failure Check whether modules are mounted correctly
Check if the congured station setup matches the
actual setup
Read off the diagnostic message from the engineering
tool and determine which further actions to take
Maintenance MT yellow: communication error with module –
Controller status RUN green: application running –
greenashing: application stopped Start the application using the engineering tool
yellow: operating system running Wait until the application is running
yellowashing: system update running Wait until update is nished
red: serious system failure –
Connection/active connection 1 L/A X1 off: no connection Check Ethernet cable
green: connection of controller connection 1 with an
additional eld device established
–
green/yellowashing: data being exchanged on
connection 1
–
Connection/active connection 2 L/AX2 off: no connection Check Ethernet cable
green: connection of controller connection 2 with an
additional eld device established
–
greenashing/yellow: data being exchanged on
connection 2
–
Input supply voltage 3.1 green: input current path supply voltage >18VDC –
3.2 red: input current path supply voltage <18VDC Check supply voltage
3.4 red: internal fuse defective Replace the controller
Output supply voltage 4.1 green: output current path supply voltage >18VDC –
4.2 red: output current path supply voltage <18VDC Check supply voltage
4.4 red: internal fuse defective Replace the controller