ABB ACS880 Firmware Manual page 685

Code Event name /
(hex) Aux. code
A7C1 FBA A
communication
A7C2 FBA B
communication
A7CA DDCS
controller
comm loss
A7CB M/F comm
loss
A7CE EFB comm
loss
A7E1 Encoder
0001
Cause
Cyclical communication between drive
and fieldbus adapter module A or
between PLC and fieldbus adapter
module A is lost.
Cyclical communication between drive
and fieldbus adapter module B or
between PLC and fieldbus adapter
module B is lost.
DDCS (fiber optic) communication
between drive and external controller
is lost.
Master/follower communication is
lost.
Communication break in embedded
fieldbus (EFB) communication.
Encoder error.
Cable fault.
Fault tracing 685
What to do
Check status of fieldbus
communication.
See user documentation of fieldbus
interface.
Check settings of parameter groups
50 Fieldbus adapter (FBA),
settings, 52 FBA A data in
A data out.
Check cable connections.
Check if communication master is able
to communicate.
Check status of fieldbus
communication.
See user documentation of fieldbus
interface.
Check settings of parameter group
Fieldbus adapter (FBA).
Check cable connections.
Check if communication master is able
to communicate.
Check status of controller. See user
documentation of controller.
Check settings of parameter group
DDCS communication.
Check cable connections. If necessary,
replace cables.
Check the auxiliary code. The code
indicates which node address (defined
by parameter 60.2 in each drive) on
the master/follower link is affected.
Check settings of parameter group
DDCS communication.
On the FDCO module (if present),
check that the DDCS link switch is not
set to 0 (OFF).
Check cable connections. If necessary,
replace cables.
Check the status of the fieldbus
master (online/offline/error etc.).
Check cable connections to the XD2D
connector on the control unit.
Check the auxiliary code (format XXYY
ZZZZ). "XX" specifies the number of
the encoder interface module (01:
91.11/91.12, 02: 91.13/91.14), "YY"
specifies the encoder (01:
1 configuration, 02: 93 Encoder 2
configuration). "ZZZZ" indicates the
problem (see actions for each code
below).
Check the conductor order at both
ends of the encoder cable.
Check the groundings of the
encoder cable.
51 FBA A
and 53 FBA
50
60
60
92 Encoder