Danfoss VLT AQUA FC 202 Operating Instructions Manual page 141

Troubleshooting
WARNING 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 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
4-30 Motor Feedback Loss Function, error setting in 4-31
Motor Feedback Speed Error, and the allowed error time 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 is higher than the value set in
4-19 Max Output Frequency.
ALARM 64, Voltage Limit
The load and speed combination demands a motor
voltage higher than the actual DC-link voltage.
WARNING/ALARM 65, Control card over temperature
The control card has reached its trip temperature of 80 °C.
WARNING 66, Heat sink temperature low
The frequency converter is too cold to operate. This
warning is based on the temperature sensor in the IGBT
module.
Increase the ambient temperature of the unit. Also, a
trickle amount of current can be supplied to the frequency
converter whenever the motor is stopped by setting
2-00 DC Hold/Preheat Current at 5% and 1-80 Function at
Stop
Troubleshooting
The heatsink temperature measured as 0 °C could indicate
that the temperature sensor is defective, causing the fan
speed to increase to the maximum. If the sensor wire
between the IGBT and the gate drive card is disconnected,
this warning would result. Also, check the IGBT thermal
sensor.
ALARM 67, Option module configuration has changed
One or more options have either been added or removed
since the last power-down. Check that the configuration
change is intentional and reset the unit.
ALARM 68, Safe stop activated
Safe stop has been activated. To resume normal operation,
apply 24 V DC to terminal 37, then send a reset signal (via
Bus, Digital I/O, or by pressing [Reset]).
ALARM 69, Power card temperaturePower card
temperature
The temperature sensor on the power card is either too
hot or too cold.
Troubleshooting
•
Check the operation of the door fans
•
Check that the filters for the door fans are not
blocked
VLT AQUA Drive FC 202 Operation Instructions
•
ALARM 70, Illegal FC configuration
The control card and power card are incompatible. Contact
the supplier with the type code of the unit from the
nameplate and the part numbers of the cards to check
compatibility.
ALARM 71, PTC 1 safe stop
Safe Stop has been activated from the PTC Thermistor
Card (motor too warm). Normal operation can be resumed
when the applies 24 V DC to T37 again (when the motor
temperature reaches an acceptable level) and when the
Digital Input from the is deactivated. When that happens, a
reset signal must be is be sent (via Bus, Digital I/O, or by
pressing [Reset]).
NOTICE
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 PTC thermistor card.
WARNING 73, Safe stop auto restart
Safe stopped. With automatic restart enabled, the motor
may start when the fault is cleared.
WARNING 76, Power unit setup
The required number of power units does not match the
detected number of active power units. When replacing an
F-frame module, this occurs if the power specific data in
the module power card does not match the rest of the
frequency converter.
Troubleshooting
•
WARNING 77, Reduced power mode
This warning indicates that the frequency converter is
operating in reduced power mode (i.e. less than the
allowed number of inverter sections). This warning is
generated on power cycle when the frequency converter is
set to run with fewer inverters and remains on.
ALARM 79, Illegal power section configuration
The scaling card is the incorrect part number or not
installed. Also MK102 connector on the power card could
not be installed.
ALARM 80, Drive initialised to default value
Parameter settings are initialised to default settings after a
manual reset. Reset the unit to clear the alarm.
ALARM 91, Analog input 54 wrong settings
Switch S202 has to be set in position OFF (voltage input)
when a KTY sensor is connected to analog input terminal
54.
MG20P402 - Rev. 2013-12-16
Check that the gland plate is properly installed
on IP21/IP54 (NEMA 1/12) frequency converters
Confirm the spare part and its power card are the
correct part number
7 7
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