WARNING/ALARM 8, DC under voltage
If the intermediate circuit voltage (DC) drops below
the under voltage limit, the frequency converter
checks if a 24 V backup supply is connected. If no 24
V backup supply is connected, the frequency convert-
er trips after a fixed time delay. The time delay varies
with unit size.
WARNING/ALARM 9, Inverter overloaded
The frequency converter is about to cut out because
of an overload (too high current for too long). The
counter for electronic, thermal inverter protection
gives a warning at 98% and trips at 100%, while giv-
ing an alarm. The frequency converter
cannot
be re-
set until the counter is below 90%.
The fault is that the frequency converter is overloa-
ded by more than 100% for too long. NOTE: See the
derating section in the Design Guide for more details
if a high switching frequency is required.
WARNING/ALARM 10, Motor overload temperature
According to the electronic thermal protection (ETR),
the motor is too hot. Select whether the frequency
converter gives a warning or an alarm when the coun-
ter reaches 100% in par. 1-90
Motor Thermal Protec-
tion. The fault is that the motor is overloaded by more
than 100% for too long.
WARNING
Live Electrical Components!
Troubleshooting:
Check if motor is over heating.
If the motor is mechanically overloaded
That the motor par. 1-24
Motor Current is set cor-
rectly.
Motor data in parameters 1-20 through 1-25 are
set correctly.
The setting in par. 1-91
Motor External Fan.
Run AMA in par. 1-29
Automatic Motor Adapta-
tion (AMA).
WARNING
Disconnect power before proceeding.
WARNING/ALARM 12, Torque limit
The torque is higher than the value in par. 4-16
Tor-
que Limit Motor Mode or the torque is higher than the
value in par. 4-17
Torque Limit Generator Mode.
Par. 14-25
Trip Delay at Torque Limit can be used to
change this from a warning only condition to a warn-
ing followed by an alarm.
WARNING/ALARM 13, Over current
The inverter peak current limit (approx. 200% of the
rated current) is exceeded. The warning lasts about
1.5 sec., then the frequency converter trips and issues
an alarm. If extended mechanical brake control is se-
lected, trip can be reset externally.
Troubleshooting:
This fault may be caused by shock loading or fast
acceleration with high inertia loads.
Turn off the frequency converter. Check if the
motor shaft can be turned.
Check that the motor size matches the frequency
converter.
Incorrect motor data in parameters 1-20 through
1-25.
ALARM 14, Earth (ground) fault
There is a discharge from the output phases to earth,
either in the cable between the frequency converter
and the motor or in the motor itself.
WARNING
Disconnect power before proceeding.
Troubleshooting:
Turn off the frequency converter and remove the
earth fault.
Measure the resistance to ground of the motor
leads and the motor with a megohmmeter to
check for earth faults in the motor.
Perform current sensor test.
ALARM 15, Hardware mismatch
A fitted option is not operational with the present
control board hardware or software.
Record the value of the following parameters and
contact your Trane supplier:
Par. 15-40
FC Type
Par. 15-41
Power Section
Par. 15-42
Voltage
Par. 15-43
Software Version
Par. 15-45
Actual Typecode String
Troubleshooting
BAS-SVX19C-EN 7-7
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