What to do
Cause
Event name /
Aux. code
Code
(hex)
Check the auxiliary code (format XYY).
An analog signal is outside the limits
specified for the analog input.
AI Supervised
Warning
A8A0
“X” specifies the location of the input
(0: AI on control unit; 1: I/O extension
module 1, etc.), “YY” specifies the input
and limit (01: AI1 under minimum, 02:
AI1 over maximum, 03: AI2 under
minimum, 04: AI2 over maximum).
Check signal level at the analog input.
Check the wiring connected to the
input.
Check the minimum and maximum
limits of the input in parameter group
,
,
or
.
Check the source of the warning
(parameter
).
Warning generated by the signal
supervision 1 function.
Signal
supervision
A8B0
Check the source of the warning
(parameter
).
Warning generated by the signal
supervision 2 function.
Signal
supervision 2
A8B1
Check the source of the warning
(parameter
).
Warning generated by the signal
supervision 3 function.
Signal
supervision 3
A8B2
Check the auxiliary code. The code
indicates which fan is to be replaced.
A cooling fan has reached the end of
its estimated lifetime.
Fan service
counter
A8C0
0: Main cooling fan
See parameters
and
1: Auxiliary cooling fan
2: Auxiliary cooling fan 2
3: Cabinet cooling fan
4: PCB compartment fan
Refer to the hardware manual of the
drive for fan replacement instructions.
Check the external device.
Fault in external device 1.
External
warning 1
A981
Check setting of parameter
.
Check the external device.
Fault in external device 2.
External
warning 2
A982
Check setting of parameter
.
Check the external device.
Fault in external device 3.
External
warning 3
A983
Check setting of parameter
.
Check the external device.
Fault in external device 4.
External
warning 4
A984
Check setting of parameter
Check the external device.
Fault in external device 5.
External
warning 5
A985
Check setting of parameter
.
Check I/O bus wiring, powering of the
nodes and node number settings on
the CIO-01 module.
Communication break noticed on I/O
bus.
I/O bus
communication
AE90
Parameters of parameter group 208
I/O bus diagnostics can be used to
identify the nodes that are timing out.
Fault tracing 587
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