Danfoss FC 300 Programming Manual page 194

Troubleshooting
WARNING/ALARM 13, Over Current:
The inverter peak current limit (approx. 200% of the rated
current) is exceeded. The warning will last approx. 8-12 sec.,
then the frequency converter trips and issues an alarm. Turn
off the frequency converter and check if the motor shaft can
be turned and if the motor size matches the frequency
converter.
If extended mechanical brake control is selected, trip can be
reset externally.
ALARM 14, Earth fault:
There is a discharge from the output phases to earth, either in
the cable between the frequency converter and the motor or
5 5
in the motor itself.
Turn off the frequency converter and remove the earth fault.
ALARM 15, Incomplete hardware:
A fitted option is not handled by the present control board
(hardware or software).
ALARM 16, Short-circuit
There is short-circuiting in the motor or on the motor
terminals.
Turn off the frequency converter and remove the short-circuit.
WARNING/ALARM 17, Control word timeout:
There is no communication to the frequency converter.
The warning will only be active when par. 8-04 Control Word
Timeout Function is NOT set to OFF.
If par. 8-04 Control Word Timeout Function is set to Stop and
Trip, a warning appears and the frequency converter ramps
down until it trips, while giving an alarm.
Par. 8-03 Control Word Timeout Time could possibly be
increased.
WARNING/ALARM 22, Hoist Mechanical Brake:
Report value will show what kind it is. 0 = The torque ref. was
not reached before timeout. 1 = There was no brake feedback
before timeout.
WARNING 23, Internal fan fault:
The fan warning function is an extra protection function that
checks if the fan is running / mounted. The fan warning can be
disabled in par. 14-53 Fan Monitor (set to [0] Disabled).
WARNING 24, External fan fault:
The fan warning function is an extra protection function that
checks if the fan is running / mounted. The fan warning can be
disabled in par. 14-53 Fan Monitor (set to [0] Disabled).
WARNING 25, Brake resistor short-circuited:
The brake resistor is monitored during operation. If it short-
circuits, the brake function is disconnected and the warning
appears. The frequency converter still works, but without the
brake function. Turn off the frequency converter and replace
the brake resistor (see par. 2-15 Brake Check).
WARNING/ALARM 26, Brake resistor power limit:
The power transmitted to the brake resistor is calculated as a
percentage, as a mean value over the last 120 s, on the basis of
the resistance value of the brake resistor (par. 2-11 Brake
Resistor (ohm)) and the intermediate circuit voltage. The
warning is active when the dissipated braking power is higher
194
FC 300 Programming Guide
than 90%. If Trip [2] has been selected in par. 2-13 Brake Power
Monitoring, the frequency converter cuts out and issues this
alarm, when the dissipated braking power is higher than
100%.
WARNING/ALARM 27, Brake chopper fault:
The brake transistor is monitored during operation and if it
short-circuits, the brake function disconnects and the warning
comes up. The frequency converter is still able to run, but
since the brake transistor has short-circuited, substantial
power is transmitted to the brake resistor, even if it is inactive.
Turn off the frequency converter and remove the brake
resistor.
This alarm/ warning could also occur should the brake resistor
overheat. Terminal 104 to 106 are available as brake resistor.
Klixon inputs, see section Brake Resistor Temperature Switch.
CAUTION
Warning: There is a risk of substantial power being
transmitted to the brake resistor if the brake transistor is
short-circuited.
WARNING/ALARM 28, Brake check failed:
Brake resistor fault: the brake resistor is not connected/
working.
ALARM 29, Drive over temperature:
If the enclosure is IP 20 or IP 21/Type 1, the cut-out tempera-
ture of the heat-sink is 95
cannot be reset, until the temperature of the heatsink is below
º
70 C +5
The fault could be:
-
-
ALARM 30, Motor phase U missing:
Motor phase U between the frequency converter and the the
motor is missing.
Turn off the frequency converter and check motor phase U.
ALARM 31, Motor phase V missing:
Motor phase V between the frequency converter and the
motor is missing.
Turn off the frequency converter and check motor phase V.
ALARM 32, Motor phase W missing:
Motor phase W between the frequency converter and the
motor is missing.
Turn off the frequency converter and check motor phase W.
ALARM 33, Inrush fault:
Too many power ups have occured within a short time period.
See the chapter General Specifications for the allowed number
of power ups within one minute.
WARNING/ALARM 34, Fieldbus communication fault:
The fieldbus on the communication option card is not working
correctly. Please check parameters associated with the module
and make sure module is properly inserted in Slot A of the
drive. Check the wiring for fieldbus.
®
MG.33.M9.02 - VLT is a registered Danfoss trademark
º º
C +5 C. The temperature fault
º
C.
Ambient temperature too high
Too long motor cable