Fault
num‐
ber
Alarm/
warning
bit num‐
ber
Fault text
Warn‐
ing
Alarm
Trip
lock
Cause of problem
44
28
Earth Fault
–
X
X
Discharge from output phases to ground, using the value
of
parameter 15-31 Alarm Log Value
if possible.
46
33
Control Volt-
age Fault
–
X
X
Control voltage is low. Contact the local Danfoss supplier.
47
23
24 V supply
low
X
X
X
24 V DC supply may be overloaded.
50
–
AMA calibra-
tion failed
–
X
–
Contact the local Danfoss supplier.
51
15
AMA U
nom
, I
nom
–
X
–
The setting of motor voltage, motor current, and motor
power is wrong. Check the settings.
52
–
AMA low I
nom
–
X
–
The motor current is too low. Check the settings.
53
–
AMA big motor
–
X
–
The motor is too big to perform AMA.
54
–
AMA small mot
–
X
–
The motor is too small to perform AMA.
55
–
AMA par. range
–
X
–
The parameter values found from the motor are outside
the acceptable range.
56
–
AMA user in-
terrupt
–
X
–
The AMA has been interrupted.
57
–
AMA timeout
–
X
–
Try to start the AMA again some times, until the AMA is
carried out.
NOTICE
Repeated runs may heat the motor to a level
where the resistance R
s
and R
r
are increased. Usu-
ally, however, this is not critical.
58
–
AMA internal
X
X
–
Contact the local Danfoss supplier.
59
25
Current limit
X
–
–
The current is higher than the value in
parameter 4-18 Cur-
rent Limit
.
60
44
External Inter-
lock
–
X
–
External interlock has been activated. To resume normal
operation, apply 24 V DC to the terminal programmed for
external interlock and reset the drive (via serial communi-
cation, digital I/O, or by pressing [Reset] on the LCP).
66
26
Heat sink Tem-
perature Low
X
–
–
This warning is based on the temperature sensor in the
IGBT module (on 400 V, 30 kW (40 hp) and 600 V units).
69
1
Pwr. Card
Temp
X
X
X
The temperature sensor on the power card exceeds the
upper or lower limits.
70
36
Illegal FC con-
figuration
–
X
X
The control card and power card are not matched.
79
–
Illegal power
section config-
uration
X
X
–
Internal fault. Contact the local Danfoss supplier.
Troubleshooting
Operating Guide | VLT® Compressor Drive CDS 803
AQ321748767627en-000101 / 130R0570| 41
Danfoss A/S © 2019.12
Summary of Contents for VLT CDS 803
Page 1: ...Operating Guide VLT Compressor Drive CDS 803...
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