Warnings and alarms, cont.
WARNING/ALARM 8
Undervoltage (DC LINK UNDERVOLT)
If the intermediate circuit voltage (DC) drops below the
undervoltage limit of the inverter, the frequency con-
verter will trip after a fixed period, the length of the
period depending on the unit.
Furthermore, the voltage will be stated in the display.
Check whether the supply voltage matches the fre-
quency converter, see Technical data.
WARNING/ALARM 9
Inverter overload (INVERTER TIME)
The electronic, thermal inverter protection reports that
the frequency converter is about to cut out because of
an overload (too high current for too long). The counter
for electronic, thermal inverter protection gives a warn-
ing at 98% and trips at 100%, while giving an alarm.
The frequency converter
cannot be reset until the
counter is below 90%.
The fault is that the frequency converter is overloaded
by more than 100% for too long.
WARNING/ALARM 10
Motor overtemperature (MOTOR TIME)
According to the electronic thermal protection (ETR),
the motor is too hot. Parameter 117 Motor thermal pro-
tection allows a choice of whether the frequency con-
verter is to give a warning or an alarm when the Motor
thermal projection reaches 100%. The fault is that the
motor is overloaded by more than 100% of the preset,
rated motor current for too long.
Check that the motor parameters 102-106 have been
set correctly.
WARNING/ALARM 11
Motor thermistor (MOTOR THERMISTOR)
The thermistor or the thermistor connection has been
disconnected. Parameter 117 Motor thermal protection
allows a choice of whether the frequency converter is
to give a warning or an alarm. Check that the thermis-
tor has been correctly connected between terminal 53
or 54 (analogue voltage input) and terminal 50 (+ 10 V
supply).
WARNING/ALARM 12
Current limit (CURRENT LIMIT)
The current is higher than the value in parameter
215 Current limit I
LIM
and the frequency converter trips
after the time set in parameter 412 Trip delay overcur-
rent , I
LIM
has passed.
WARNING/ALARM 13
Overcurrent (OVER CURRENT)
The inverter peak current limit (approx. 200% of the
rated current) has been exceeded. The warning will
last approx. 1-2 seconds, following which the frequen-
cy converter will trip and give off an alarm. Turn off the
frequency converter and check whether the motor
shaft can be turned and whether the motor size match-
es the frequency converter.
ALARM: 14
Earth fault (EARTH FAULT)
There is a discharge from the output phases to earth,
either in the cable between the frequency converter
and the motor or in the motor itself. Turn off the fre-
quency converter and remove the earth fault.
ALARM: 15
Switch mode fault (SWITCH MODE FAULT)
Fault in the switch mode power supply (internal ± 15 V
supply).
Contact your Danfoss supplier.
ALARM: 16
Short-circuiting (CURR. SHORT CIRCUIT)
There is short-circuiting on the motor terminals or in
the motor itself. Cut off the mains supply to the fre-
quency converter and remove the short-circuit.
WARNING/ALARM 17
Serial communication timeout (STD BUSTIME-
OUT)
There is no serial communication with the frequency
converter.
This warning will only be enabled if parameter 556 Bus
time interval function has been set to a value different
from OFF.
If parameter 556 Bus time interval function has been
set to Stop and trip [5], the frequency converter will
first give off an alarm, then ramp down and finally trip
while giving off an alarm. It is possible to increase pa-
rameter 555 Bus time interval .
Warnings and alarms, cont.
WARNING/ALARM 18
HPFB bus timeout (HPFB TIMEOUT)
There is no serial communication with the communi-
cation option card of the frequency converter. The
warning will only be enabled if parameter 804 Bus time
interval function has been set to anything but OFF. If
parameter 804 Bus time interval function has been set
to Stop and trip, the frequency converter will first give
off an alarm, then ramp down and finally trip while giv-
ing off an alarm.
Parameter 803 Bus time interval could possibly be in-
creased.
VLT
®
6000 HVAC Series
190 MG.61.B5.02 - VLT
®
is a registered Danfoss trademark
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