Description of Alarm Word 2 and Warning Word 2
Bit Hex Dec Alarm Word 2 Warning Word 2
0 00000001 1 Start Delayed
1 00000002 2 Stop Delayed
9 00000200 512 Discharge Temperature High Discharge Temperature High
10 00000400 1024 Start Limit
11 00000800 2048 Speed Limit
Table 8.4: Compressor specific Alarms and Warnings
8.1.2 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 over-
loaded. 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 par.
6-10, par. 6-12, par. 6-20, or par. 6-22 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 con-
verter 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 par. 2-10
Increase par. 14-26
Alarm/warning limits:
Voltage ranges 3 x 200 - 240 V 3 x 380 - 480 V
[VDC] [VDC]
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 fre-
quency converter with a tolerance of ± 5 %. The corresponding
mains voltage is the intermediate circuit voltage (DC-link) divided
by 1.35
WARNING/ALARM 8, DC under voltage:
If the intermediate circuit voltage (DC) drops below the “voltage warning
low” limit (see table above), the frequency converter checks if 24 V back-
up 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
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 par. 1-90. The fault is that the
motor is overloaded by more than 100% for too long. Check that the
motor par. 1-24 is set correctly.
WARNING/ALARM 11, Motor thermistor over temp:
The thermistor or the thermistor connection is disconnected. Choose if
the frequency converter is to give a warning or an alarm when the counter
reaches 100% in par. 1-90. Check that the thermistor is connected cor-
rectly between terminal 53 or 54 (analog voltage input) and terminal 50
(+ 10 Volts 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.
8 Troubleshooting ADAP-KOOL
®
Drive AKD 102 High Power
136
MG.11.O1.02 - ADAP-KOOL
®
is a registered Danfoss trademark
8
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