VLT® 5000 Crane
Alarm/warning limits:
VLT 5000 Crane 3 x 400-500 VAC
Undervoltage 402 VDC
Voltage warning low 423 VDC
Voltage warning high 801/840 VDC (w/o brake - w/brake)
Overvoltage 855 VDC
■ Warnings and Alarms, 1-6
Warn-
ing/Alarm
number
Display Description How to Handle
1(w) 10 Volt Low The 10 Volts voltage from terminal 50 on the control
card is below 10 Volts
Remove some of the load from terminal 50,
as the 10 Volts supply is overloaded. Max.
17 mA/min. 590
2 Live Zero Error The current signal on terminal 58 or the voltage
signal on te
rminal 53 is less than 50% of the value
set in parameter 353/309
Check the wires to terminals 53 and 58
3(a) No Motor The motor c
heck function (see parameter 122)
indicates that no motor has been connected to the
output of the frequency converter
Check the m
otor connection
4 Mains Phase
Loss
Phasemissingonthesupplysideormains
imbalance is too high
Check the supply voltage to the frequency
converter
5(w) DC Link Voltage
High
The intermediate circuit voltage (DC) is higher than
the overvoltage limit of the control system. The
fre
quency converter is still active
Check brake resistor connection
6(w) DC Link Voltage
Lo
w
The intermediate circuit voltage is below the
un
dervoltage limit of the control system. The
frequency converter is still active
Check the supply voltage to the frequency
co
nverter
MG.50.N4.02 - VLT is a registered Danfoss trademark
88
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