Fault tracing 353
A6E5 AI parametrization The current/voltage hardware
setting of an analog input does
not correspond to parameter
settings.
Check the auxiliary code. The code
identifies the analog input whose settings
are in conflict.
Adjust either the hardware setting (on the
drive control unit) or parameter
12.15/12.25.
Note: Control board reboot (either by
cycling the power or through parameter
96.08 Control board boot) is required to
validate any changes in the hardware
settings.
A780 Motor stall
Programmable warning:
31.24 Stall function
Motor is operating in stall
region because of e.g.
excessive load or insufficient
motor power.
Check motor load and drive ratings.
Check fault function parameters.
A781 Motor fan
Programmable warning:
35.106 DOL starter event
type
No feedback received from
external fan.
Check external fan (or other equipment
controlled) by the logic.
Check settings of parameters
35.100…35.106.
A782 FEN temperature Error in temperature
measurement when
temperature sensor (KTY or
PTC) connected to encoder
interface FEN-xx is used.
Check that parameter 35.11 Temperature
1 source / 35.21 Temperature 2 source
setting corresponds to actual encoder
interface installation.
Check the settings of parameters 91.21
and 91.24. Check that the corresponding
module is activated in parameters
91.11…91.14. Use parameter 91.10
Encoder parameter refresh to validate
any changes in the settings.
Error in temperature
measurement when KTY
sensor connected to encoder
interface FEN-01 is used.
FEN-01 does not support temperature
measurement with KTY sensor. Use PTC
sensor or other encoder interface
module.
A791 Brake resistor Brake resistor broken or not
connected.
Check that a brake resistor has been
connected.
Check the condition of the brake resistor.
A797 Speed feedback
configuration
Speed feedback configuration
has changed.
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). “ZZZZ” indicates the
problem (see actions for each code
below).
0001 Adapter not found in specified
slot.
Check module location (91.12 or 91.14).
0002 Detected type of interface
module does not match
parameter setting.
Check the module type (91.11 or 91.13)
against status (91.02 or 91.03).
0003 Logic version too old. Contact your local ABB representative.
0004 Software version too old. Contact your local ABB representative.
0006 Encoder type incompatible with
interface module type.
Check module type (91.11 or 91.13
)
against encoder type (92.01 or 93.01).
0007 Adapter not configured. Check module location (91.12 or 91.14).
Code
(hex)
Warning Cause What to do
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