ABB ACS880-104

580 Fault tracing
A7AB Extension I/O
configuration failure
The I/O extension module
types and locations specified
by parameters do not match
the detected configuration.
Check the auxiliary code. The code
indicates which I/O extension module is
affected.
Check the type and location settings of
the modules (parameters 14.01, 14.02,
15.01, 15.02, 16.01 and 16.02).
Check that the modules are properly
installed.
A7B0 Motor speed feedback
Programmable warning:
90.45 Motor feedback fault
No motor speed feedback is
received.
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: 92 Encoder 1
configuration, 02: 93 Encoder 2
configuration). “ZZZZ” indicates the
problem (see actions for each code
below).
0001 Motor gear definition invalid or
outside limits.
Check motor gear settings (90.43 and
90.44).
0002 Encoder not configured. Check encoder settings (92 Encoder 1
configuration or 93 Encoder 2
configuration).
Use parameter 91.10 Encoder parameter
refresh) to validate any changes in the
settings.
0003 Encoder stopped working. Check encoder status.
0004 Encoder drift detected. Check for slippage between encoder and
motor.
A7B1 Load speed feedback
Programmable warning:
90.55 Load feedback fault
No load speed feedback is
received.
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: 92 Encoder 1
configuration, 02: 93 Encoder 2
configuration). “ZZZZ” indicates the
problem (see actions for each code
below).
0001 Load gear definition invalid or
outside limits.
Check load gear settings (90.53 and
90.54).
0002 Feed constant definition invalid
or outside limits.
Check feed constant settings (90.63 and
90.64).
0003 Encoder stopped working. Check encoder status.
A7C1 FBA A communication
Programmable warning:
50.02 FBA A comm loss
func
Cyclical communication
between drive and fieldbus
adapter module A or between
PLC and fieldbus adapter
module A is lost.
Check status of fieldbus communication.
See user documentation of fieldbus
interface.
Check settings of parameter groups 50
Fieldbus adapter (FBA), 51 FBA A
settings, 52 FBA A data in and 53 FBA A
data out.
Check cable connections.
Check if communication master is able to
communicate.
Code
(hex)
Warning Cause What to do