62 ACH580 Installation, Operation and Maintenance Manual
ACH580-01 Installation
A6E5 AI parametrization The current/voltage
hardware setting of an
analog input does not
correspond to
parameter settings.
Check the event log for an 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.
A6E6 ULC configuration User load curve
configuration error.
Check the auxiliary code (format
XXXX ZZZZ). “ZZZZ” indicates the
problem (see actions for each code
below).
0000 Speed points
inconsistent.
Check that each speed point
(parameters 37.11…37.15) has a
higher value than the previous point.
0001 Frequency points
inconsistent.
Check that each frequency point
(37.20…37.16) has a higher value
than the previous point.
0002 Underload point above
overload point.
Check that each overload point
(37.31…37.35) has a higher value
than the corresponding underload
point (37.21…37.25).
0003 Overload point below
underload point.
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.
A792 Brake resistor wiring Brake resistor short
circuit or brake chopper
control fault. For drive
frames R6 or larger.
Check brake chopper and brake
resistor connection.
Ensure brake resistor is not damaged.
A793 BR excess temperature Brake resistor
temperature has
exceeded warning limit
defined by parameter
43.12 Brake resistor
warning limit.
Stop drive. Let resistor cool down.
Check resistor overload protection
function settings (parameter group
43 Brake chopper).
Check warning limit setting,
parameter 43.12 Brake resistor
warning limit.
Check that the resistor has been
dimensioned correctly.
Check that braking cycle meets
allowed limits.
A794 BR data Brake resistor data has
not been given.
One or more of the resistor data
settings (parameters 43.08…43.10) is
incorrect. The parameter is specified
by the auxiliary code.
0000 0001 Resistance value too
low.
Check value of 43.10.
0000 0002 Thermal time constant
not given.
Check value of 43.08.
Code
(hex)
Warning / Aux. code Cause What to do
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