Fault
number
Alarm/
Warning
Bit
Number Fault text Warning Alarm
Trip
locked Cause of problem
50
AMA
Calibration
failed X Contact your local Danfoss supplier.
51 15
AMA
Unom,Inom X
The setting of motor voltage, motor current and motor power is
presumably wrong. Check the settings.
52 AMA low Inom X The motor current is too low. Check the settings.
53
AMA big
motor X The motor is too big for the AMA to be carried out
54
AMA small
mot X The motor is too small for the AMA to be carried out
55
AMA par.
range X
The parameter values found from the motor are outside acceptable
range
56
AMA user
interrupt X The AMA has been interrupted by the user
57 AMA timeout X
Try to start the AMA again a number of times, until the AMA is
carried out. Please note that repeated runs may heat the motor to
a level where the resistance Rs and Rr are increased. In most cases,
however, this is not critical
58 AMA internal X X Contact your local Danfoss supplier.
59 25 Current limit X The current is higher than the value in par. 4-18 Current Limit
60 44
External
Interlock X
External interlock has been activated. To resume normal operation,
apply 24 V DC to the terminal programmed for external interlock
and reset the frequency converter (via serial communication, digital
I/O, or by pressing reset button on keypad).
66 26
Heat sink
Temperature
Low X
This warning is based on the temperature sensor in the IGBT
module (Only on 400 V 30-90 kW units).
69 1
Pwr. Card
Temp X X X
The temperature sensor on the power card is either too hot or too
cold.
79
Illegal power
section config-
uration X X Internal fault. Contact your local Danfoss supplier.
80 29
Drive
initialised X All parameter settings are initialized to default settings.
87 47
Auto DC
Braking X The drive is auto DC braking
95 40 Broken Belt X X
Torque is below the torque level set for no load, indicating a
broken belt. See parameter group 22-6.
200 Fire Mode X Fire mode has been activated
202
Fire Mode
Limits
Exceeded X Fire Mode has suppressed one or more warranty voiding alarms
250 New sparepart X X
The power or switch mode power supply has been exchanged.
(Only on 400 V 30-90 kW units). Contact your local Danfoss supplier
251 New Typecode X X
The frequency converter has a new type code (Only on 400 V 30-90
kW units). Contact your local Danfoss supplier.
Quick Guide VLT HVAC Basic Drive Quick Guide
34 MG18A302 - VLT
®
is a registered Danfoss trademark
11
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