Fault
number
Alarm/
Warning
Bit
Number Fault text
Warning Alarm
Trip
locked Cause of problem
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
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 Cascade Controller Quick Guide
MG18F202 - VLT
®
is a registered Danfoss trademark
29
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