35
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.
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).
ALARM/WARNING 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 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%.
ALARM/ WARNING 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 shortcircuited,
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.
ALARM/WARNING 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
temperature of the heat-sink is 95 oC +5 oC. The
temperature fault cannot be reset, until the temperature
of the heatsink is below 70 oC +5 oC.
The fault could be:
- Ambient temperature too high
- Too long motor cable
ALARM 30, Motor phase U missing:
Motor phase U between the frequency converter and 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 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 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.
WARNING/ALARM 36, Mains failure:
This warning/alarm is only active if the supply voltage to
the frequency converter is lost and par. 14-10 Mains
Failure is NOT set to OFF. Possible correction: check the
fuses to the frequency converter
ALARM 37, Phase imbalance:
There is a current imbalance between the power units
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