Danfoss VLT HVAC Basic Drive FC 101 Programming Manual page 88

Troubleshooting
ALARM 32, Motor phase W missing
Motor phase W between the frequency converter and the
motor is missing.
Turn off the frequency converter and check motor phase
W.
ALARM 38, Internal fault
It may be necessary to contact your Danfoss supplier.
4 4
ALARM 44, Earth fault II
There is a discharge from the output phases to earth,
either in the cable between the frequency converter and
the motor or in the motor itself.
Troubleshooting:
Turn off the frequency converter and remove the
earth fault.
Measure the resistance to ground of the motor
leads and the motor with a megohmmeter to
check for earth fault in the motor.
WARNING 47, Control Voltage Fault
The 24 V DC is measured on the control card. The external
24 V DC backup power supply may be overloaded,
otherwise contact your Danfoss supplier.
WARNING 48, VDD1 Supply Low
The VDD1 supply on the control card is outside of
allowable limits.
ALARM 51, AMA check Unom and Inom
The setting of motor voltage, motor current, and motor
power is presumably wrong. Check the settings.
ALARM 52, AMA low Inom
The motor current is too low. Check the settings.
ALARM 53, AMA motor too big
The motor is too big for the AMA to be carried out.
ALARM 54, AMA motor too small
The motor is too small for the AMA to be carried out.
ALARM 55, AMA Parameter out of range
The parameter values found from the motor are outside
acceptable range.
ALARM 56, AMA interrupted by user
The AMA has been interrupted by the user.
ALARM 57, AMA timeout
Try to start the AMA again a number of times, until the
AMA is carried out. 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.
ALARM 58, AMA internal fault
Contact your Danfoss supplier.
WARNING 59, Current limit
The current is higher than the value in 4-18 Current Limit.
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VLT HVAC Basic Drive FC 101 Programming Guide
ALARM 60, External interlock
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]).
WARNING 66, Heatsink temperature low
This warning is based on the temperature sensor in the
IGBT module.
ALARM 70, Illegal power section configuration
The control card and power card are incompatible. Contact
your supplier with the type code of the unit from the
nameplate and the part numbers of the cards to check
compatibility.
ALARM 84, LCP error
ALARM 84 is generated by the LCP and indicates an error
with the LCP.
ALARM 80, Drive initialised to default value
Parameter settings are initialised to default settings after a
manual reset.
ALARM 95, Broken belt
Torque is below the torque level set for no load, indicating
a broken belt. See parameter group 22-6* Broken Belt
Detection.
ALARM 126, Motor Rotating
High back-emf voltage. Stop the rotor of the PM motor.
WARNING 200, Fire Mode
Fire Mode has been activated.
WARNING 202, Fire Mode Limits Exceeded
Fire Mode has suppressed one or more warranty voiding
alarms.
ALARM 250, New Spare Part
The power or switch mode power supply has been
exchanged.
ALARM 251, New Type Code
The frequency converter has a new type code.
MG18B302 - Rev. 2013-09-02