VLT
®
5000 FLUX
Miscellaneous
(BRAKE IGBT FAULT) [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 constant being energized.
WARNING/ALARM: 44
Encoder loss (ENCODER FAULT)
The encoder signal is interrupted from terminal
32 or 33. Check the connections.
LEDs on encoder board:
When all LEDs are ON the connection to encoder
and encoder condition are OK.
LED 403 OFF: 5 V supply missing
LED 400 OFF: Channel A or inv. A missing
or shortcircuited
LED 401 OFF: Channel B or inv. B missing
or shortcircuited
LED 402 OFF: Channel Z or inv. Z missing
or shortcircuited.
ALARM 48:
Tracking fault
The following events can generate Alarm 48:
• Parameter 361 set too low: Extend the range
• Wrong encoder direction: Motor goes one way,
the encoder goes the other way
• Running in torque limit: Insufficient torque to follow
the ramp, hitting an obstruction, etc.
• Bad PID settings: Oscillations can produce
large errors. Readjust the PID control
(Parameters 417 and 418)
■ Warningword1,Extendedstatusword
and Alarm word
Warning word 1, extended status word and alarm
word are shown on the display in Hex format. If
there are more than one warning or alarm, a sum
of all warnings or alarms will be shown.
Warning word 1, extended status word and alarm
word can also be displayed using the serial bus
in parameter 540, 541 and 538.
Bit (Hex) Warning word 1 (parameter 540)
000001 Fault during brake test
000002 EE-prom power card fault
000004 EE-prom control card
000008 HPFP bus timeout
000010 Standard bus timeout
000020 Overcurrent
000040 Torque limit
000080 Motor thermistor
000100 Motor overload
000200 Inverter overload
000400 Undervoltage
000800 Overvoltage
001000 Voltage warning low
002000 Voltage warning high
004000 Phase fault
008000 No motor
010000 Live zero fault
(4-20 mA current signal low)
020000 10 Volts low
040000 Brake resistor power 100%
080000 Brake resistor fault
100000 Brake transistor fault
200000 Out of frequency range
400000 Fieldbus communication fault
800000 Encoder loss
1000000 Mains failure
2000000 Motor too small
4000000 Motor too big
8000000 Check P. 103 and P. 105
10000000 Check P. 104 and P. 106
20000000 Application high
40000000 Application low
80000000 Warning word 2
MG.55.A6.02 - VLT is a registered Danfoss trademark
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