Danfoss VLT HVAC Drive FC 131 - Page 42

Fault
num-
ber
Alarm/
warning
bit num-
ber
Fault text
Warn-
ing
Alarm
Trip
locked
Cause of problem
47
23
24 V supply
low
X
X
X
24 V DC supply may be overloaded.
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 mo-
tor
–
X
–
The motor is too big to perform AMA.
54
–
AMA small
motor
–
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 by the user.
57
–
AMA timeout
–
X
–
Try to restart the AMA several times, until the AMA is car-
ried out.
N O T I C E
Repeated runs may heat the motor to a level where the
resistance R
s
and R
r
are increased. In most cases, how-
ever, 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] button 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, 30–90 kW (40–125 hp) 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.
80
29
Drive initial-
ised
–
X
–
All parameter settings are initialized to default settings.
AQ367426199594en-000101 / 130R098842 | Danfoss A/S © 2021.06
Warnings and Alarms
VLT® HVAC Drive FC 131
Operating Guide