Embedded Fieldbus Faults; No Master Device; Same Device Address; Incorrect Wiring - ABB ACS355 User Manual

352 Fault tracing

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
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/EIA-485 interface connection.
SERIAL 1 ERR
values remain unchanged.
5307 EFB CRC ERRORS
(0028).
5306 EFB OK MESSAGES
5307 EFB CRC ERRORS
5306 EFB OK MESSAGESS value remains
increases.
53 EFB PROTOCOL
and 5307