VLT
®
8000 AQUA
All about VLT 8000
AQUA
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 frequency converter.
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 RS
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 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
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.
ALARM 29
Heat sink temperature too high (HEAT
SINK OVER TEMP.):
If the enclosure is Chassis or NEMA 1, the cut-out
temperature of the heat-sink is 90°C. If NEMA 12 is
used, the cut-out temperature is 80°C.
The tolerance is ± 5°C. The temperature fault
cannot be reset, until the temperature of the
heat-sink is below 60°C.
The fault could be the following:
-
Ambient temperature too high
-
Too long motor cable
-
Too high switching frequency.
ALARM 30
Motor phase U missing (MISSING MOT.PHASE U):
Motor phase U between frequency converter
and motor is missing.
Turn off the frequency converter and check
motor phase U.
ALARM 31
Motor phase V missing (MISSING MOT.PHASE V):
Motor phase V between frequency converter
and motor is missing.
Turn off the frequency converter and check
motor phase V.
ALARM 32
Motor phase W missing (MISSING MOT.PHASE U):
Motor phase W between frequency converter
and motor is missing.
Turn off the frequency converter and check
motor phase W.
WARNING/ALARM 34
HPFB communication fault (HPFB COMM. FAULT)
The serial communication on the communication
option card is not working.
ALARM 37
Inverter fault (GATE DRIVE FAULT):
IGBT or the power card is defective. Contact
your Danfoss supplier.
Auto-optimization warnings 39-42
Automatic motor adaptation has stopped, since some
parameters have probably been set wrongly, or the
motor used in too big/small for AMA to be carried out.
MG.83.A2.02 - VLT is a registered Danfoss trademark
179