GE AF-600 FP Operating Instructions Manual page 56

Warnings and Alarms
Troubleshooting
Check for motor overheating.
Check if the motor is mechanically overloaded.
When using terminal 53 or 54, check that the
thermistor is connected correctly between either
terminal 53 or 54 (analog voltage input) and
terminal 50 (+10V supply) and that the terminal
switch for 53 or 54 is set for voltage. Check
F-12 Motor Thermistor Input selects terminal 53 or
54.
When using digital inputs 18 or 19, check that
the thermistor is connected correctly between
either terminal 18 or 19 (digital input PNP only)
and terminal 50. Check F-12 Motor Thermistor
Input selects terminal 18 or 19.
WARNING/ALARM 12, Torque limit
The torque has exceeded the value in F-40 Torque Limiter
(Driving) or the value in F-41 Torque Limiter (Braking).
SP-25 Trip Delay at Torque Limit can change this from a
warning only condition to a warning followed by an alarm.
Troubleshooting
If the motor torque limit is exceeded during ramp
up, extend the ramp up time.
If the generator torque limit is exceeded during
ramp down, extend the ramp down time.
If torque limit occurs while running, possibly
increase the torque limit. Be sure the system can
operate safely at a higher torque.
Check the application for excessive current draw
on the motor.
WARNING/ALARM 13, Over current
The inverter peak current limit (approximately 200% of the
rated current) is exceeded. The warning lasts about 1.5
secs., then the drive trips and issues an alarm. This fault
may be caused by shock loading or fast acceleration with
high inertia loads. If extended mechanical brake control is
selected, trip can be reset externally.
Troubleshooting:
Remove power and check if the motor shaft can
be turned.
Check that the motor size matches the drive.
Check parameters P-02, P-03, P-06, P-07, F-04 and
F-05. for correct motor data.
ALARM 14, Earth (ground) fault
There is current from the output phases to earth, either in
the cable between the drive and the motor or in the
motor itself.
AF-600 FP Operating Instructions
Troubleshooting:
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 GE supplier:
ALARM 16, Short circuit
There is short-circuiting in the motor or motor wiring.
Remove power to the drive and repair the short circuit.
WARNING/ALARM 17, Control word timeout
There is no communication to the drive.
The warning will only be active when O-04 Control Word
Timeout Function is NOT set to OFF.
If O-04 Control Word Timeout Function is set to Stop and
Trip, a warning appears and the drive ramps down until it
stops then displays an alarm.
Troubleshooting:
ALARM 18, Start failed
The speed has not been able to exceed AP-70 Compressor
Start Max Speed [RPM] during start within the allowed time.
(set in AP-72 Compressor Start Max Time to Trip). This may
be caused by a blocked motor.
WARNING 23, Internal fan fault
The fan warning function is an extra protective function
that checks if the fan is running/mounted. The fan warning
can be disabled in SP-53 Fan Monitor ([0] Disabled).
For the 4x, 5x and 6x Frame filters, the regulated voltage
to the fans is monitored.
Remove power to the drive and repair the earth
fault.
Check for earth faults in the motor by measuring
the resistance to ground of the motor leads and
the motor with a megohmmeter.
ID-40 Drive Type
ID-41 Power Section
ID-42 Voltage
ID-43 Software Version
ID-45 Actual Typecode String
ID-49 SW ID Control Card
ID-50 SW ID Power Card
ID-60 Option Mounted
ID-61 Option SW Version (for each option slot)
Check connections on the serial communication
cable.
IncreaseO-03 Control Word Timeout Time
Check the operation of the communication
equipment.
Verify a proper installation based on EMC
requirements.
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