Danfoss VLT AutomationDrive FC 361 Operating Manual page 51

Maintenance, Diagnostics, a...
ALARM 16, Short circuit
There is short-circuiting in the motor or motor wiring.
Troubleshooting
•
Remove the power to the drive and repair the
short circuit.
WARNING
HIGH VOLTAGE
Drives contain high voltage when connected to AC mains
input, DC supply, or load sharing. Failure to use qualified
personnel to install, start up, and maintain the drive can
result in death or serious injury.
•
Disconnect power before proceeding.
WARNING/ALARM 17, Control word timeout
There is no communication to the drive.
The warning is only active when parameter 8-04 Control
Word Timeout Function is NOT set to [0] Off.
If parameter 8-04 Control Word Timeout Function is set to [5]
Stop and trip, a warning appears, and the drive ramps
down to a stop and shows an alarm.
Troubleshooting
•
Check the connections on the serial communi-
cation cable.
•
Increase parameter 8-03 Control Word Timeout
Time.
•
Check the operation of the communication
equipment.
•
Verify that proper EMC installation was
performed.
ALARM 18, Start failed
The speed cannot exceed the value set in
parameter 1-78 Compressor Start Max Speed [Hz] during
start within the allowed time which is set in
parameter 1-79 Compressor Start Max Time to Trip. The
alarm may be caused by a blocked motor.
WARNING/ALARM 21, Parameter error
The parameter is out of range. The parameter number is
shown in the display.
Troubleshooting
•
Set the affected parameter to a valid value.
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 14-53 Fan Monitor ([0] Disabled).
For drives with DC fans, a feedback sensor is mounted in
the fan. If the fan is commanded to run and there is no
feedback from the sensor, this alarm appears. For drives
with AC fans, the voltage to the fan is monitored.
MG06I102
Operating Guide
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 14-53 Fan Monitor ([0] Disabled).
For drives with DC fans, a feedback sensor is mounted in
the fan. If the fan is commanded to run and there is no
feedback from the sensor, this alarm appears. For drives
with AC fans, the voltage to the fan is monitored.
Troubleshooting
•
•
•
ALARM 29, Power module temp
The power module is over temperature. If the enclosure is
IP00 or IP20/NEMA 1, the cutout temperature of the heat-
sink is 90 °C (194 °F). If the enclosure is IP54, the cutout
temperature is 80 °C (176 °F).
ALARM 30, Motor phase U missing
Motor phase U between the drive and the motor is
missing.
WARNING
HIGH VOLTAGE
Drives contain high voltage when connected to AC mains
input, DC supply, or load sharing. Failure to perform
installation, start-up, and maintenance by qualified
personnel can result in death or serious injury.
•
•
Troubleshooting
•
ALARM 31, Motor phase V missing
Motor phase V between the drive and the motor is
missing.
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Check for proper fan operation.
Cycle power to the drive 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 drive and check that the fan
operates briefly at start-up.
Check the sensors on the heat sink.
Only qualified personnel must perform instal-
lation, start-up, and maintenance.
Before performing any service or repair work,
use an appropriate voltage measuring device to
make sure that there is no remaining voltage on
the drive.
Remove the power from the drive and check
motor phase U.
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