8.1.1 Fault Messages
WARNING 1, 10 volts low
The control card voltage is below 10 V from terminal 50.
Remove some of the load from terminal 50, as the 10 V
supply is overloaded. Max. 15 mA or minimum 590
Ω
.
This condition can be caused by a short in a connected
potentiometer or improper wiring of the potentiometer.
Troubleshooting: Remove the wiring from terminal 50. If
the warning clears, the problem is with the customer
wiring. If the warning does not clear, replace the control
card.
WARNING/ALARM 2, Live zero error
This warning or alarm will only appear if programmed by
the user in
AN-01 Live Zero Timeout Function
. The signal on
one of the analog inputs is less than 50% of the minimum
value programmed for that input. This condition can be
caused by broken wiring or faulty device sending the
signal.
WARNING/ALARM 4, Mains phase loss A phase is missing
on the supply side, or the mains voltage imbalance is too
high. This message also appears for a fault in the input
rectifier on the frequency converter. Options are
programmed at
SP-12 Function at Line Imbalance
.
Troubleshooting: Check the supply voltage and supply
currents to the frequency converter.
WARNING 5, DC link voltage high
The intermediate circuit voltage (DC) is higher than the
high voltage warning limit. The limit is dependent on the
drive voltage rating. The frequency converter is still active.
WARNING 6, DC link voltage low
The intermediate circuit voltage (DC) is lower than the low
voltage warning limit. The limit is dependent on the drive
voltage rating. The frequency converter is still active.
WARNING/ALARM 7, DC overvoltage
If the intermediate circuit voltage exceeds the limit, the
frequency converter trips after a time.
Troubleshooting:
Extend the ramp time
Change the ramp type
Activate functions in
B-10 Brake Function
Increase
SP-26 Trip Delay at Drive Fault
WARNING/ALARM 8, DC under voltage
If the intermediate circuit voltage (DC) drops below the
under voltage limit, the frequency converter checks if a
24V backup supply is connected. If no 24V backup supply
is connected, the frequency converter 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 giving an alarm. The
frequency converter
cannot
be reset until the counter is
below 90%.
The fault is that the frequency converter is overloaded 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, the motor
is too hot. Select whether the frequency converter gives a
warning or an alarm when the counter reaches 100% in
F-10 Electronic Overload
. The fault is that the motor is
overloaded by more than 100% for too long.
Troubleshooting:
Check if motor is over heating.
If the motor is mechanically overloaded
That the motor
P-03 Motor Current
is set correctly.
Motor data in parameters P-02, P-03, P-06, P-07,
F-04 and F-05 are set correctly.
The setting in
F-11 Motor External Fan
.
Run Auto tune in
P-04 Auto Tune
.
WARNING/ALARM 11, Motor thermistor over temp
The thermistor or the thermistor connection is discon-
nected. Select whether the frequency converter gives a
warning or an alarm when the counter reaches 100% in
F-10 Electronic Overload
.
Troubleshooting:
Check if motor is over heating.
Check if the motor is mechanically overloaded.
Check that the thermistor is connected correctly
between terminal 53 or 54 (analog voltage input)
and terminal 50 (+10 V supply), or between
terminal 18 or 19 (digital input PNP only) and
terminal 50.
If using a thermal switch or thermistor, check the
programming of
F-12 Motor Thermistor Input
matches sensor wiring.
WARNING/ALARM 12, Torque limit
The torque is higher than the value in
F-40 Torque Limiter
(Driving)
or the torque is higher than the value in
F-41 Torque Limiter (Braking)
.
SP-25 Trip Delay at Torque
Limit
can be used to change this from a warning only
condition to a warning followed by an alarm.
Warnings and Alarms
AF-600 FP High Power Operating Instructions
129
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