GE AF-600 FP Operating Instructions Manual page 55

Warnings and Alarms
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.
Troubleshooting
Check connections on all the analog input
terminals. Control card terminals 53 and 54 for
signals, terminal 55 common. OPCGPIO terminals
11 and 12 for signals, terminal 10 common.
OPCAIO terminals 1, 3, 5 for signals, terminals 2,
4, 6 common).
Check that the drive programming and switch
settings match the analog signal type.
Perform Input Terminal Signal Test.
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 drive. Options are
programmed at SP-12 Function at Line Imbalance.
8 8 Troubleshooting: Check the supply voltage and supply
currents to the drive.
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 unit 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 unit is still active.
WARNING/ALARM 7, DC overvoltage
If the intermediate circuit voltage exceeds the limit, the
drive trips after a time.
Troubleshooting
Connect a brake resistor
Extend the ramp time
Change the ramp type
Activate the 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 link) drops below
the under voltage limit, the drive checks if a 24V DC
backup supply is connected. If no 24V DC backup supply is
connected, the drive trips after a fixed time delay. The
time delay varies with unit size.
52
AF-600 FP Operating Instructions
Troubleshooting:
WARNING/ALARM 9, Inverter overload
The drive 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 drive cannot be
reset until the counter is below 90%.
The fault is that the drive is overloaded by more than
100% for too long.
Troubleshooting
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 drive gives a warning or an
alarm when the counter reaches 100% in F-10 Electronic
Overload . The fault occurs when the motor is overloaded
by more than 100% for too long.
Troubleshooting
WARNING/ALARM 11, Motor thermistor over temp
The thermistor might be disconnected. Select whether the
drive gives a warning or an alarm in F-10 Electronic
Overload .
Check that the supply voltage matches the drive
voltage.
Perform input voltage test
Perform soft charge circuit test
Compare the output current shown on the
keypad with the drive rated current.
Compare the output current shown on the
keypad with measured motor current.
Display the Thermal Drive Load on the keypad
and monitor the value. When running above the
drive continuous current rating, the counter
should increase. When running below the drive
continuous current rating, the counter should
decrease.
Check for motor overheating.
Check if the motor is mechanically overloaded
Check that the motor current set in P-03 Motor
Current is correct.
Ensure that Motor data in parameters P-02, P-03,
P-06, P-07, F-04 and F-05 are set correctly.
If an external fan is in use, check in F-11 Motor
External Fan that it is selected.
Running Auto tune in P-04 Auto Tune may tune
the drive to the motor more accurately and
reduce thermal loading.