Danfoss Vacon NXP Series Operating Manual page 166

Operating guide | VACON® NXS/NXP Air-cooled
Fault Fault
code
41 IGBT tempera-
ture
42 Brake resistor
overtempera-
ture
43 Encoder fault
Device
44 (2)
changed (dif-
ferent type)
Device added
45 (2)
(different type)
49 Division by
zero in appli-
cation
Analogue in-
(1)
50
put Iin < 4mA
(sel. signal
range 4 to 20
mA)
51 External fault
166 | Danfoss A/S © 2018.06
Subcode Possible cause
in T.14
IGBT Inverter Bridge overtemperature
protection has detected too high a
short-term overload current.
Brake resistor overtemperature protec-
tion has detected too heavy braking.
1 = Encod- Problem detected in encoder signals.
er 1 chan-
nel A is
missing
2 = Encod-
er 1 chan-
nel B is
missing
3 = Both
encoder 1
channels
are miss-
ing
4 = Encod-
er reversed
5 = Encod-
er board
missing
Option board or power unit changed.
New device of different type or differ-
ent power rating.
Option board of different type added.
Division by zero has occurred in appli-
cation program.
Current at the analog input is < 4 mA
control cable is broken or loose signal
source has failed.
Digital input fault.
How to correct the fault
Do a check of the loading.
Do a check of the motor frame size.
Make an identification run.
Set the deceleration time longer.
Use external brake resistor.
Do a check of the encoder connections.
Do a check of the encoder board.
Do a check of the encoder frequency in the
open loop.
Reset.
Set the option board parameters again if op-
tion board was changed.
If power unit was changed, set AC drive pa-
rameters again.
Reset.
Set the power unit parameters again.
If the fault shows again while the AC drive is
in run state, ask instructions from the local
distributor.
For an application programmer: do a check
of the application program.
Do a check of the current loop circuitry.
Remove fault situation on external device.
Specifications
DPD00910G