Alarms, faults and system messages
8.1 Operating states indicated on LED
Converter with the control units CU240D-2
266
Operating Instructions, 04/2018, FW V4.9 SP10, A5E34262100B AF
Table 8- 5
PROFINET fieldbus
ACT
LNK
Explanation
Communication via PROFINET is error-free. Inverter and open-loop control
exchange actual data.
Communication via PROFINET has been set up.
Communication via PROFINET is not active.
Table 8- 6
PROFINET fieldbus
FO
ACT /
LNK
Explanation
Communication via PROFINET is error-free. Inverter and open-loop control
exchange actual data.
Communication via PROFINET has been set up.
Communication via PROFINET is not active.
Inverter does not receive a light wave signal. Possible causes:
•
Fiber optical cable or connector damaged.
•
Excessive attenuation of the fiber optic line.
Table 8- 7
PROFINET and PROFIBUS fieldbuses
BF
Explanation
Data exchange between the inverter and control system is active
Fieldbus interface is not being used
The fieldbus is improperly configured.
RDY
In conjunction with a synchronously flashing LED RDY:
Inverter waits until the power supply is switched off and switched on again after
a firmware update
No communication with higher-level controller
RDY
In conjunction with an asynchronously flashing LED RDY:
Incorrect memory card
Firmware update failed
Firmware update is active