VLT
®
6000 HVAC
153MG.60.B1.02 - VLT is a registered Danfoss trade mark
All about
VLT 6000 HVAC
ASYMMETRICAL IMPEDANCE [2]
AMA has detected an asymmetrical impedance in the
motor connected to the system. The motor could be
defective.
MOTOR TOO BIG [3]
The motor connected to the system is too big for
AMA to be carried out. The setting in parameter 102
does not match the motor used.
MOTOR TOO SMALL [4]
The motor connected to the system is too small for
AMA to be carried out. The setting in parameter 102
does not match the motor used.
TIME OUT [5]
AMA fails because of noisy measuring signals. Try to
start AMA all over a number of times, until AMA is
carried out. Please note that repeated AMA runs may
heat the motor to a level where the stator resistance
R
S
is increased. In most cases, however, this is not
critical.
INTERRUPTED BY USER [6]
AMA has been interrupted by the user.
INTERNAL FAULT [7]
An internal fault has occurred in the VLT frequency
converter. Contact your Danfoss supplier.
LIMIT VALUE FAULT [8]
The parameter values found for the motor are outside
the acceptable range within which the VLT frequency
converter is able to work.
MOTOR ROTATES [9]
The motor shaft rotates. Make sure that the load is
not able to make the motor shaft rotate. Then start
AMA all over.
Warnings and alarms, cont.
WARNING/ALARM 18
HPFB bus timeout (HPFB TIMEOUT)
There is no serial communication with the commu-
nication option card of the VLT frequency converter.
The warning will only be enabled if parameter 804 Bus
time interval function has been set to anything but
OFF. If parameter 804 Bus time interval function has
been set to Stop and trip, the VLT frequency
converter will first give off an alarm, then ramp down
and finally trip while giving off an alarm.
Parameter 803 Bus time interval could possibly be
increased.
WARNING 19
Fault in the EEprom on the power card
(EE ERROR POWER)
There is a fault on the power card EEPROM. The VLT
frequency converter will continue to function, but is
likely to fail at the next power-up. Contact your
Danfoss supplier.
WARNING 20
Fault in the EEprom on the control card
(EE ERROR CONTROL)
There is a fault in the EEPROM on the control card.
The VLT frequency converter will continue to function,
but is likely to fail at the next power-up. Contact your
Danfoss supplier.
ALARM: 22
Auto-optimisation not OK
(AMA FAULT)
A fault has been found during automatic motor
adaptation. The text shown in the display indicates a
fault message.
NB!
AMA can only be carried out if there are
no
alarms during tuning.
CHECK 103, 105 [0]
Parameter 103 or 105 has a wrong setting. Correct
the setting and start AMA all over.
LOW P.105 [1]
The motor is too small for AMA to be carried out. If
AMA is to be enabled, the rated motor current
(parameter 105) must be higher than 35% of the rated
output current of the VLT frequency converter.
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