8.6.4 Warning/Alarm List
WARNING 1, 10 Volts low:
The 10 V voltage from terminal 50 on the control card is
below 10 V.
Remove some of the load from terminal 50, as the 10 V
supply is overloaded. Max. 15 mA or minimum 590 ohm.
WARNING/ALARM 2, Live zero error:
The signal on terminal 53 or 54 is less than 50% of the
value set in 6-10 Terminal 53 Low Voltage, 6-12 Terminal 53
Low Current, 6-20 Terminal 54 Low Voltage or 6-22 Terminal
54 Low Current respectively.
WARNING/ALARM 3, No motor:
No motor has been connected to the output of the
frequency converter.
WARNING/ALARM 4, Mains phase loss:
A phase is missing on the supply side, or the mains
voltage imbalance is too high.
This message also appears in case of a fault in the input
rectifier on the frequency converter.
Check the supply voltage and supply currents to the
frequency converter.
WARNING 5, DC link voltage high:
The intermediate circuit voltage (DC) is higher than the
overvoltage limit of the control system. The frequency
converter is still active.
WARNING 6, DC link voltage low
The intermediate circuit voltage (DC) is below the
undervoltage limit of the control system. The frequency
converter is still active.
WARNING/ALARM 7, DC over voltage:
If the intermediate circuit voltage exceeds the limit, the
frequency converter trips after a time.
Connect a brake resistor. Extend the ramp time
Possible corrections:
Connect a brake resistor
Extend the ramp time
Activate functions in 2-10 Brake Function
Increase 14-26 Trip Delay at Inverter Fault
Voltage ranges 3x200-240 V 3x380-480 V
[V DC] [V DC]
Undervoltage 185 373
Voltage warning low 205 410
Voltage warning high
(w/o brake - w/brake)
390/405 810/840
Overvoltage 410 855
The voltages stated are the intermediate circuit voltage of the
frequency converter with a tolerance of
±
5 %. The
corresponding mains voltage is the intermediate circuit voltage
(DC-link) divided by 1.35
Table 8.43 Alarm/Warning Limits
WARNING/ALARM 8, DC under voltage:
If the intermediate circuit voltage (DC) drops below the
“voltage warning low” limit (see Table 8.43), the frequency
converter checks if 24 V backup supply is connected.
If no 24 V backup supply is connected, the frequency
converter trips after a given time depending on the unit.
To check whether the supply voltage matches the
frequency converter, see 8.1 General Specifications.
WARNING/ALARM 9, Inverter overloaded:
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 warning at
98% and trips at 100%, while giving an alarm. Reset
cannot be performed before counter is below 90%.
The fault is that the frequency converter is overloaded by
more than 100% for too long.
WARNING/ALARM 10, Motor ETR over temperature:
According to the electronic thermal protection (ETR), the
motor is too hot. It can be chosen if the frequency
converter is to give a warning or an alarm when the
counter reaches 100% in 1-90 Motor Thermal Protection.
The fault is that the motor is overloaded by more than
100% for too long. Check that 1-24 Motor Current is set
correctly.
WARNING/ALARM 11, Motor thermistor over temp:
The thermistor or the thermistor connection is discon-
nected. Choose if the frequency converter is to give a
warning or an alarm when the counter reaches 100% in
1-90 Motor Thermal Protection. Check that the thermistor is
connected correctly between terminal 53 or 54 (analog
voltage input) and terminal 50 (+10 V supply), or between
terminal 18 or 19 (digital input PNP only) and terminal 50.
If a KTY sensor is used, check for correct connection
between terminal 54 and 55.
WARNING/ALARM 12, Torque limit:
The torque is higher than the value in 4-16 Torque Limit
Motor Mode (in motor operation) or the torque is higher
than the value in 4-17 Torque Limit Generator Mode (in
regenerative operation).
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 s,
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.
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 in the motor itself.
Turn off the frequency converter and remove the earth
fault.
ALARM 15, In-complete hardware:
A fitted option is not handled by the present control board
(hardware or software).
General Specifications and ...
VLT
®
Refrigeration Drive Design Guide
130 MG16G102 - VLT
®
is a registered Danfoss trademark
8
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