GE AF-650 GP Programming Manual page 194

Troubleshooting
Troubleshooting
•
Remove power to the frequency converter and
repair the ground fault.
•
Check for ground faults in the motor by
measuring the resistance to ground of the motor
cables and the motor with a megohmmeter.
•
Reset any potential individual offset in the 3
current transducers in AF-650 GP. Perform the
manual initialization or perform a complete AMA.
This method is most relevant after changing the
power card.
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
GE:
•
Parameter ID-40 Drive Type.
•
Parameter ID-41 Power Section.
•
Parameter ID-42 Voltage.
•
Parameter ID-43 Software Version.
•
Parameter ID-45 Actual Typecode String.
•
Parameter ID-49 SW ID Control Card.
•
Parameter ID-50 SW ID Power Card.
•
Parameter ID-60 Option Mounted.
•
Parameter ID-61 Option SW Version (for each
option slot).
ALARM 16, Short circuit
There is short-circuiting in the motor or motor wiring.
Troubleshooting
•
Remove the power to the frequency converter
and repair the short circuit.
WARNING/ALARM 17, Control word timeout
There is no communication to the frequency converter.
The warning is only active when parameter O-04 Control
Word Timeout Function is NOT set to [0] Off.
If parameter O-04 Control Word Timeout Function is set to
[5] Stop and Trip, a warning appears, and the frequency
converter ramps down to a stop and shows an alarm.
Troubleshooting
•
Check the connections on the serial communi-
cation cable.
•
Increase parameter O-03 Control Word Timeout
Time.
•
Check the operation of the communication
equipment.
•
Verify that proper EMC installation was
performed.
WARNING/ALARM 20, Temp. input error
The temperature sensor is not connected.
DET-618D
AF-650 GP™ Programming Guide
WARNING/ALARM 21, Parameter error
The parameter is out of range. The parameter number is
reported in the keypad.
Troubleshooting
•
WARNING/ALARM 22, Hoist mechanical brake
The value of this warning/alarm shows the type of
warning/alarm.
0 = The torque reference was not reached before timeout
(parameter B-27 Torque Ramp Time).
1 = Expected brake feedback not received before timeout
(parameter B-23 Activate Brake Delay, parameter B-25 Brake
Release Time).
WARNING 23, Internal fan fault
The fan warning function is a protective function that
checks if the fan is running/mounted. The fan warning can
be disabled in parameter SP-53 Fan Monitor ([0] Disabled).
For frequency converters with DC fans, there is a feedback
sensor mounted in the fan. If the fan is commanded to run
and there is no feedback from the sensor, this alarm
appears. For frequency converters with AC fans, the
voltage to the fan is monitored.
Troubleshooting
•
•
•
WARNING 24, External fan fault
The fan warning function is a protective function that
checks if the fan is running/mounted. The fan warning can
be disabled in parameter SP-53 Fan Monitor ([0] Disabled).
For frequency converters with DC fans, there is a feedback
sensor mounted in the fan. If the fan is commanded to run
and there is no feedback from the sensor, this alarm
appears. For frequency converters with AC fans, the
voltage to the fan is monitored.
Troubleshooting
•
•
•
WARNING 25, Brake resistor short circuit
The brake resistor is monitored during operation. If a short
circuit occurs, the brake function is disabled and the
warning appears. The frequency converter is still
operational, but without the brake function.
Troubleshooting
•
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Set the affected parameter to a valid value.
Check for proper fan operation.
Cycle power to the frequency converter and
check that the fan operates briefly at start-up.
Check the sensors on the control card.
Check for proper fan operation.
Cycle power to the frequency converter and
check that the fan operates briefly at start-up.
Check the sensors on the heat sink.
Remove the power to the frequency converter
and replace the brake resistor (refer to
parameter B-15 Brake Check).
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