Embedded Fieldbus Faults; No Master Device; Same Device Address; Incorrect Wiring - ABB ACS350 User Manual

Embedded fieldbus faults

Embedded fieldbus faults can be traced by monitoring group
parameters. See also fault/alarm

No master device

If there is no master device on line, parameter
EFB CRC ERRORS values remain unchanged.
What to do:
• Check that the network master is connected and properly configured.
• Check the cable connection.

Same device address

If two or more devices have the same address, parameter
value increases with every read/write command.
What to do:
• Check the device addresses. No two devices on line may have the same
address.

Incorrect wiring

If the communication wires are swapped (terminal A on one device is connected to
terminal B on another device), parameter
unchanged and parameter
What to do:
• Check the RS-232/485 interface connection.
SERIAL 1 ERR.
5306
5306 EFB OK MESSAGES value remains
5307 EFB CRC ERRORS increases.
53 EFB PROTOCOL
EFB OK MESSAGES and
5307 EFB CRC ERRORS
283
5307
Fault tracing