User manual

LED indicators and troubleshooting | Field-bus coupler
284 1432790000/03/02.2014Manual u-remote
Coupler/indicator LED Status Recommended action
PROFINET IRT field-bus coupler UR20-FBC-PN-IRT
Power LED
PWR Green: Supply voltage
Off and the status LED on the module is green: Defective
coupler
Have coupler repaired or replaced
The internal fuse was triggered due to an overload
Off and the status LED on the module is off: Improper supply
voltage
Check the supply voltage
Collective error
SF Red: Conguration error, or error in the coupler, or error in a
module, or there is a new diagnostic message
Red ashing: Station in Force mode
Check that the GSDML le is up-to-date.
Check if the congured station setup matches the actual
setup
Read the diagnostic message with the web server or an
engineering tool and determine which further actions to take
Bus failure
BF Red: No connection to the eldbus Check the eldbus cable and the PLC conguration
Flashing red: Conguration error, no connection to the
control unit, or error in the parameter set
Check the eldbus parameters and the PLC conguration
Check that the GSD le is up-to-date
Check if the congured station setup matches the actual
setup
Maintenance
MT Yellow: Error on the system bus Check that the modules have been snapped into place
properly
Connection
LINK1 Green: Connection established between port 1 of the coupler
and another eld device
Off: No connection Check the connection to the next participant and the eldbus
cable
Active
ACT1 Flashing yellow: Data being exchanged on port 1
Connection
LINK2 Green: Connection established between port 2 of the coupler
and another eld device
Off: No connection Check the connection to the next participant and the eldbus
cable
Active
ACT2 Flashing yellow: Data being exchanged on port 2
Input supply voltage
3.1 Green: Supply voltage for input circuit >18VDC
3.2 Red: Supply voltage for input circuit <18VDC Check the supply voltage
3.4 Red: Internal fuse defective Replace the coupler
Output supply voltage
4.1 Green: Supply voltage for output circuit >18VDC
4.2 Red: Supply voltage for output circuit <18VDC Check the supply voltage
4.4 Red: Internal fuse defective Replace the coupler