ALARM 52, Auto tune low I
nom
The motor current is too low. Check the settings.
ALARM 53, Auto tune motor too big
The motor is too big for the Auto tune to be carried out.
ALARM 54, Auto tune motor too small
The motor is too big for the Auto tune to be carried out.
ALARM 55, Auto Tune parameter out of range
The parameter values found from the motor are outside
acceptable range.
ALARM 56, Auto Tune interrupted by user
The Auto Tune has been interrupted by the user.
ALARM 57, Auto tune timeout
Try to start the Auto Tune again a number of times, until
the Auto Tune is carried out. Please note that repeated
runs may heat the motor to a level where the resistances
Rs and Rr are increased. In most cases, however, this is not
critical.
ALARM 58, Auto Tune internal fault
Contact your Danfoss supplier.
WARNING 59, Current limit
The current is higher than the value in par. 4-18,
Current
Limit
.
WARNING 60, External interlock
External interlock has been activated. To resume normal
operation, apply 24 VDC to the terminal programmed for
external interlock and reset the adjustable frequency drive
(via serial communication, digital I/O, or by pressing reset
button on keypad).
WARNING 61, Tracking error
An error has been detected between the calculated motor
speed and the speed measurement from the feedback
device. The function for Warning/Alarm/Disable is set in
par 4-30,
Motor Feedback Loss Function
, error setting in par
4-31,
Motor Feedback Speed Error
, and the allowed error
time in par 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 is higher than the value set in
4-19 Max Output Frequency
WARNING 64, Voltage limit
The load and speed combination demands a motor
voltage higher than the actual DC link voltage.
WARNING/ALARM/TRIP 65, Control card over temperature
Control card overtemperature: The cutout temperature of
the control card is 176°F [80°C].
WARNING 66, Heatsink temperature low
This warning is based on the temperature sensor in the
IGBT module.
Troubleshooting:
ALARM 67, Option module configuration has changed
One or more options have either been added or removed
since the last power-down.
ALARM 68, Safe stop activated
Safe stop has been activated. To resume normal operation,
apply 24 VDC to terminal 37, then send a reset signal (via
Bus, Digital I/O, or by pressing the reset key. See
parameter 5-19, Terminal 37 Safe Stop.
ALARM 69, Power card temperature
The temperature sensor on the power card is either too
hot or too cold.
Troubleshooting:
Check the operation of the door fans.
Make sure that the filters for the door fans are
not blocked.
Check that the connector plate is properly
installed on IP 21 and IP 54 (NEMA 1 and NEMA
12) drives.
ALARM 70, Illegal Drive Configuration
The current control board and power board combination is
illegal.
WARNING/ALARM 71, PTC 1 safe stop
Safe Stop has been activated from the MCB 112 PTC
Thermistor Card (motor too warm). Normal operation can
be resumed when the MCB 112 applies 24 V DC to T-37
again (when the motor temperature reaches an acceptable
level) and when the digital input from the MCB 112 is
deactivated. When that happens, a reset signal must be
sent (via serial communication, digital I/O, or by pressing
reset button on keypad). Note that if automatic restart is
enabled, the motor may start when the fault is cleared.
ALARM 72, Dangerous failure
Safe stop with trip lock. Unexpected signal levels on safe
stop and digital input from the MCB 112 PTC thermistor
card.
Warning 73, Safe stop auto restart
Safe stopped. Note that with automatic restart enabled,
the motor may start when the fault is cleared.
WARNING 76, Power Unit Set-up
The required number of power units does not match the
detected number of active power units. When replacing an
F frame module, this will occur if the power specific data
in the module power card does not match the rest of the
drive. Please confirm the spare part and its power card are
the correct part number.
WARNING 77, Reduced power mode:
This warning indicates that the drive is operating in
reduced power mode (i.e., less than the allowed number of
inverter sections). This warning will be generated on power
cycle when the drive is set to run with fewer inverters and
will remain on.
Troubleshooting
VLT AQUA 12-Pulse High Power Instruction Manual
8-8
MG.20.Y1.22 - VLT
®
is a registered Danfoss trademark
8
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