Weidmüller 1334950000, Manual

Page: 75 / 84

12 LED indicators and troubleshooting
75 Manual u-control 2604080000/03/08.2020
Controller/indicator LED Status Recommended action
UC20-SL2000-EC , UC20-SL2000-EC-CAN
Power LED
PWR green : supply voltage present, bootloader/firmware
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 : field bus failure Check whether modules are mounted correctly
Check if the configured 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 flashing : application stopped Start the application using the engineering tool
yellow : operating system running Wait until the application is running
yellow flashing: system update running Wait until update is finished
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 field device established
–
green/yellow flashing : 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 field device established
–
green flashing /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