Earth Fault 2; Ama Calibration Failed; Tracking Error; Output Frequency At Maximum Limit - Danfoss VLT AutomationDrive Programming Manual

Troubleshooting
ALARM 43, Ext. supply
MCB 113 Ext. Relay Option is mounted without ext. 24 V
DC. Either connect an ext. 24 V DC supply or specify that
no external supply is used via 14-80 Option Supplied by
External 24VDC [0]. A change in 14-80 Option Supplied by
External 24VDC requires a power cycle.
ALARM 45, Earth Fault 2
Ground fault on start-up.
Troubleshooting
5 5
Check for proper 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: 24V, 5V,
+/- 18V. When powered with 24V DC with the MCB 107
option, only the 24V and 5V supplies are monitored. When
powered with three-phase AC line voltage, all three
supplied are monitored.
Troubleshooting
Check for a defective power card.
Check for a defective control card.
Check for a defective option card.
If a 24V DC power supply is used, verify proper
supply power.
WARNING 47, 24V supply low
The 24 V DC is measured on the control card. The external
24V DC backup power supply may be overloaded;
otherwise, contact your Danfoss supplier.
WARNING 48, 1.8V supply low
The 1.8V 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 Adjustable frequency drive will show
a warning. When the speed is below the specified limit in
1-86 Trip Speed Low [RPM] (except when starting or
stopping) the Adjustable frequency drive will trip.
ALARM 50, AMA calibration failed
Contact your Danfoss supplier or Danfoss Service
Department.
5-10
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FC 300 Programming Guide
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 setting in

4-18 Current Limit.

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 AMA has been interrupted by the user.
ALARM 57, AMA timeout
Try to restart AMA again. Repeated restarts may overheat
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 through 1-25
are set correctly. Possibly increase the current limit. Be sure
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 Adjustable frequency drive. An external interlock has
commanded the Adjustable frequency drive to trip. Clear
the external fault condition. To resume normal operation,
apply 24V DC to the terminal programmed for external
interlock. Reset the Adjustable frequency drive.
WARNING/ALARM 61, Tracking error
An error between calculated speed and speed
measurement from feedback device. The function Warning/
Alarm/Disabling setting is in 4-30 Motor Feedback Loss
Function. Accepted error setting in 4-31 Motor Feedback
Speed Error and the allowed time the error occur setting in
4-32 Motor Feedback Loss Timeout. During a commissioning
procedure the function may be effective.
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
frequency limit. Be sure the system can operate safely at a
higher output frequency. The warning will clear when the
output drops below the maximum limit.
®
MG33MD22 - VLT is a registered Danfoss trademark
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