VLT
®
4000 VT
All about VLT 4000
VT
■
Warnings
A warning will flash in line 2, while an explanation
is given in line 1.
175ZA905.10
DC LINK VOLTAGE LOW
WARN. 6
SETUP
1
■
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.
175ZA703.10
SETUP
1
ALARM:12
TRIP (RESET)
CURRENT LIMIT
SETUP
1
■
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 VLT AFD.
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 VLT AFD 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 VLT AFD 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 VLT AFD will trip after a fixed period. The length
of this period depends on the unit.
Alarm/warning limits:
VLT 4000 VT
3 x 200 - 240 V
[VDC]
3 x 380 - 460 V
[VDC]
3 x 525 - 600 V
[VDC]
3 x 525 - 600 V
1)
[VDC]
Undervoltage
211
402
557
553
Voltage warning low
222
423
585
585
Voltage warning high
384
769
943
1084
Overvoltage
425
855
975
1020
1) VLT 4102-4402.
The voltages stated are the intermediate circuit
voltage of the VLT AFD with a tolerance of ± 5 %.
The corresponding line voltage is the intermediate
circuit voltage divided by
√
2.
MG.40.A7.22 - VLT is a registered Danfoss trademark
117