Danfoss VLT 8000 AQUA series Operating Instructions Manual page 177

Warnings
A warning will flash in line 2, while an explanation
is given in line 1.
DC LINK VOLTAGE LOW
WARN. 6
Warnings and alarms
WARNING 1
Under 10 V (10 VOLT 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
Volts supply is overloaded. Max. 17 mA/min. 590
WARNING/ALARM 2
Live zero fault (LIVE ZERO ERROR)
The current or voltage signal on terminal 53, 54 or
60 is below 50% of the value preset in parameter
309, 312 and 315 Terminal, min. scaling.
WARNING/ALARM 4
Mains imbalance (MAINS IMBALANCE)
High imbalance or phase missing on the supply side.
Check the supply voltage to the frequency converter.
Alarm/warning limits:
VLT 8000 AQUA
Undervoltage
Voltage warning low
Voltage warning high
Overvoltage
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 divided by 1.35.
WARNING/ALARM 8
Undervoltage (DC LINK UNDERVOLT)
If the intermediate circuit voltage (DC) drops below
the undervoltage limit of the inverter, the frequency
converter will trip after a fixed period, the length
of the period depending on the unit.
MG.83.A2.02 - VLT is a registered Danfoss trademark
SETUP
1
.
3 x 200 - 240 V 3 x 380 - 480 V
[VDC] [VDC]
211 402
222 423
384 769
425 855
®
VLT 8000 AQUA
Alarms
If an alarm is given, the present alarm number
will be shown in line 2. Lines 3 and 4 of the
display will offer an explanation.
TRIP (RESET)
ALARM:12
CURRENT LIMIT
WARNING 5
Voltage warning high
(DC LINK VOLTAGE HIGH)
The intermediate circuit voltage (DC) is higher than
Voltage warning high, see table below. The controls
of the frequency converter are still enabled.
WARNING 6
Voltage warning low (DC LINK VOLTAGE LOW)
The intermediate circuit voltage (DC) is lower than
Voltage warning low, see table below. The controls
of the frequency converter are still enabled.
WARNING/ALARM 7
Overvoltage (DC LINK OVERVOLT)
If the intermediate circuit voltage (DC) is higher than
the Overvoltage limit of the inverter (see table below),
the frequency converter will trip after a fixed period.
The length of this period depends on the unit.
3 x 525 - 600 V
[VDC]
557
585
943
975
Furthermore, the voltage will be stated in the display.
Check whether the supply voltage matches the
frequency 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 over-load (too high current for too long). The
counter for electronic, thermal inverter protection
gives a warning at 98% and trips at 100%, while
SETUP
SETUP
1
1
3 x 525 - 690 V
[VDC]
553
585
1084
1130
177