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 adjustable frequency drive and remove the short
circuit.
WARNING/ALARM 17, Control word timeout:
There is no communication to the adjustable frequency
drive.
The warning will only be active when
is NOT set to OFF.
If
8-04 Control Word Timeout Function
is set to
Stop
and
Trip
, a
warning appears and the adjustable frequency drive ramps
down until it trips, while giving an alarm.
8-03 Control Word Timeout Time
could possibly be increased.
WARNING/ALARM 22, Hst. mech 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
(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
(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 adjustable frequency drive still works, but
without the brake function. Turn off the adjustable
frequency drive and replace the brake resistor (see
).
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 (
) and the intermediate circuit voltage. The
warning is active when the dissipated braking energy is
higher than 90%. If
Trip
[2] has been selected in
, the adjustable frequency drive cuts out
and issues this alarm, when the dissipated braking energy 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 adjustable frequency drive 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 adjustable frequency drive 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 overtemperature:
If the enclosure is IP 20 or IP 21/Type 1,, the cut-out
temperature of the heatsink is 203°F +9°F [95°C +5°C]. The
temperature fault cannot be reset until the temperature of
the heatsink is below 158°F +9°F [70°C +5°C].
The fault could be:
-
Ambient temperature too high
-
Too long motor cable
ALARM 30, Motor phase U missing:
Motor phase U between the adjustable frequency drive and
the motor is missing.
Turn off the adjustable frequency drive and check motor
phase U.
ALARM 31, Motor phase V missing:
Motor phase V between the adjustable frequency drive and
the motor is missing.
Turn off the adjustable frequency drive and check motor
phase V.
ALARM 32, Motor phase W missing:
Motor phase W between the adjustable frequency drive and
the motor is missing.
Turn off the adjustable frequency drive and check motor
phase W.
ALARM 33, Inrush fault:
Too many power-ups have occurred 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 serial communication bus on the communication option
card is not working correctly. Please check the parameters
associated with the module and make sure the module is
properly inserted in slot A of the drive. Check the wiring for
serial communication bus.
Troubleshooting
FC 300 Programming Guide
5-6
MG.33.MA.22 - VLT
®
is a registered Danfoss trademark
5
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