Danfoss VLT FC 103 Operating Instructions Manual page 67

Warnings and Alarms
A A LARM 39, Heatsink sensor
No feedback from the heatsink temperature sensor.
The signal from the IGBT thermal sensor is not available on
the power card. The problem could be on the power card,
on the gate drive card, or the ribbon cable between the
power card and gate drive card.
WARNING 40, Overload of digital output terminal 27
Check the load connected to terminal 27 or remove short-
circuit connection. Check 5-00 Digital I/O Mode and
5-01 Terminal 27 Mode.
WARNING 41, Overload of digital output terminal 29
Check the load connected to terminal 29 or remove short-
circuit connection. Check 5-00 Digital I/O Mode and
5-02 Terminal 29 Mode.
WARNING 42, Overload of digital output on X30/6 or
overload of digital output on X30/7
For X30/6, check the load connected to X30/6 or remove
the short-circuit connection. Check 5-32 Term X30/6 Digi
Out (MCB 101).
For X30/7, check the load connected to X30/7 or remove
the short-circuit connection. Check 5-33 Term X30/7 Digi
Out (MCB 101).
ALARM 45, Earth fault 2
Earth (ground) fault on start-up.
Troubleshooting
Check for proper earthing (grounding) and loose
connections.
Check for proper wire size.
Check motor cables for short-circuits or leakage
currents.
ALARM 46, Power card supply
The supply on the power card is out of range.
There are three power supplies generated by the switch
mode power supply (SMPS) on the power card: 24 V, 5 V,
18 V. When powered with 24 V DC with the MCB 107
option, only the 24 V and 5 V supplies are monitored.
When powered with three phase mains voltage, all three
supplies are monitored.
Troubleshooting
Check for a defective power card.
Check for a defective control card.
Check for a defective option card.
If a 24 V DC power supply is used, verify proper
supply power.
WARNING 47, 24 V supply low
The 24 V DC is measured on the control card. The external
24 V DC backup power supply may be overloaded,
otherwise contact the Danfoss supplier.
inverter.ru (812) 702-47-50
VLT Refrigeration Drive FC 103 1.1-90 kW Operating Instructions
WARNING 48, 1.8 V supply low
The 1.8 V DC supply used on the control card is outside of
allowable limits. The power supply is measured on the
control card. Check for a defective control card. If an
option card is present, check for an overvoltage condition.
WARNING 49, Speed limit
When the speed is not within the specified range in
4-11 Motor Speed Low Limit [RPM] and 4-13 Motor Speed
High Limit [RPM], the frequency converter shows a warning.
When the speed is below the specified limit in 1-86 Trip
Speed Low [RPM] (except when starting or stopping) the
frequency converter will trip.
ALARM 50, AMA calibration failed
Contact your Danfoss supplier or Danfoss Service
Department.
ALARM 51, AMA check U
The settings for motor voltage, motor current and motor
power are wrong. Check the settings in parameters 1-20 to
1-25.
ALARM 52, AMA low I
The motor current is too low. Check the settings.
ALARM 53, AMA motor too big
The motor is too big for the AMA to operate.
ALARM 54, AMA motor too small
The motor is too small for the AMA to operate.
ALARM 55, AMA parameter out of range
The parameter values of the motor are outside of the
acceptable range. AMA will not run.
ALARM 56, AMA interrupted by user
The user has interrupted the AMA.
ALARM 57, AMA internal fault
Try to restart AMA again. Repeated restarts can over heat
the motor.
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.
Ensure that Motor data in parameters 1-20 to 1-25 are set
correctly. Possibly increase the current limit. Be sure that
the system can operate safely at a higher limit.
WARNING 60, External interlock
A digital input signal is indicating a fault condition external
to the frequency converter. An external interlock has
commanded the frequency converter to trip. Clear the
external fault condition. To resume normal operation,
apply 24 V DC to the terminal programmed for external
interlock. Reset the frequency converter.
WARNING 62, Output frequency at maximum limit
The output frequency has reached the value set in
4-19 Max Output Frequency. Check the application to
determine the cause. Possibly increase the output
MG16E202 - VLT® is a registered Danfoss trademark
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