User manual

13 LEDindicatorsandtroubleshooting | Fieldbus coupler
477Manual u-remote1432790000/08/12.2015
Coupler/indicator LED Status Recommended action
UR20-FBC-CAN
Power LED
PWR Green: Supply voltage
Red: Boot loader failure Have coupler repaired or replaced
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 ESI conguration 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
Redashing: 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 ESI conguration le is up-to-date
Check if the congured station setup matches the actual
setup
Maintenance
MT Yellow: Error on the system bus or eldbus Check that the modules have been snapped into place
properly
Internal error
ERROR Red: No eldbus communication (BusOFF) Check the eldbus wiring (terminating resistor)
*Redfastashing: Auto baud rate detection running Check the eldbus wiring, restart the eldbus
Redashing: Conguration error Check the conguration, check the bus address
Redoneshortash: CAN error counter reached warning
level
Bad bus physics or collision, check eldbus
Redtwoshortashes: Node guarding (node guard or
heartbeat)
PLC or NMT master failed
Coupler state
RUN Green: Fieldbus running (OPERATIONAL)
Greenashing: Fieldbus in state PRE-OPERATIONAL
*Greenfastashing: Auto baud rate detection running see above
Input supply voltage
3.1 Green: Supply voltage for input current path >18VDC
3.2 Red: Supply voltage for input current path <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 current path >18VDC
4.2 Red: Supply voltage for output current path <18VDC Check the supply voltage
4.4 Red: Internal fuse defective Replace the coupler
*Alternating