VLT® 5000 Crane
All About VLT 5000
Crane
■ Warnings and Alarms, 29-49
Warn-
ings/Alarm
numbers
Display Description How to Handle
29 (w) Heat Sink Over Temp For IP20/IP 00, the cut-out temperature if the heat
sink is 90°C. The tolerance is +/- 5°C.
Decrease ambient temperature and
check fans
30 (a) Missing Mot.Phase U Motor phase U between frequency converter and
motor is missing
Turn off the frequency converter and
check motor phase U
31 (a) Missing Mot.Phase V Motor phase V between frequency converter and
motor is missing
Turn off the frequency converter and
check motor phase V
32 (a) Missing Mot.Phase
W
Motor phase W between frequency converter and
motor is missing
Turn off the frequency converter and
check motor phase W
35 (w) Motor Not Ready The drive was unable to finish the starting sequence
(pre-magnetisation and start torque) within 5 sec.
Check the motor connection
37 (a) Inverter Fault IGBT or the power card is defective Contact your Danfoss supplier
43 (a) Brake Fault A fault has arisen on the brake chopper. The text
shown in the display indicates a fault message.
The figure in square brackets is the fault code that
canbeseeninthefaultlog,parameter615
[0] The brake resistor check carried out
during power-up indicates that the brake
has been disconnected. Check whether
the brake has been connected correctly
and that it has not been dispconnected
[1] The brake output has short-circuited.
Replace the brake resistor
[2] The brake IGBT has short-circuited.
This fault means that the unit is not able
to stop the brake and that, consequently,
the resistor is constantly being energized
44 (a) Encoder fault The encoder signal is interrupted from terminal 73,
74, 75, 76, 77 or 78
Check the connections
45 (a) Load fault An overload has occurred on one or both of the
load contacts and the speed is too high to hold the
load. The overload causes a trip
Startupagainwithreducedspeed
46 (a) Watchdog fault An internal error has occurred Contact your Danfoss supplier
47 (a) Flash fault An internal error has occurred Contact your Danfoss supplier
48 (a) Tracking fault Load is dropping faster than expected Check mechanical brake
49 (w) Brake release fault Fault when releasing the brake (open).
50 (w) Brake activate fault Fault when activating the brake (close) Remove the start signal
MG.50.N4.02 - VLT is a registered Danfoss trademark
91
To Next Page
Loading...
