Danfoss VLT AQUA Drive FC 202 Operating Manual page 70

Maintenance, Diagnostics, a...
ALARM 53, AMA motor too big
The motor is too large 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 AMA cannot run because the parameter values of the
motor are outside of the acceptable range.
ALARM 56, AMA interrupted by user
The AMA is manually interrupted.
ALARM 57, AMA internal fault
Try to restart the AMA. Repeated restarts can overheat the
motor.
ALARM 58, AMA Internal fault
Contact the Danfoss supplier.
WARNING 59, Current limit
The current is higher than the value in
parameter 4-18 Current Limit. Ensure that the motor data in
parameters 1-20 to 1-25 is set correctly. Increase the current
limit if necessary. Ensure that the system can operate safely
8 8
at a higher limit.
WARNING 60, External interlock
A digital input signal indicates a fault condition external to
the drive. An external interlock has commanded the drive
to trip. Clear the external fault condition. To resume
normal operation, apply 24 V DC to the terminal
programmed for external interlock, and reset the drive.
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
parameter 4-30 Motor Feedback Loss Function. Error setting
is found in parameter 4-31 Motor Feedback Speed Error.
Allowed error time is found in parameter 4-32 Motor
Feedback Loss Timeout. During the commissioning process,
this function can be useful.
WARNING 62, Output frequency at maximum limit
The output frequency has reached the value set in
parameter 4-19 Max Output Frequency. Check the
application for possible causes. Possibly increase the
output frequency limit. Be sure that the system can
operate safely at a higher output frequency. The warning
clears when the output drops below the maximum limit.
ALARM 63, Mechanical brake low
The actual motor current has not exceeded the release
brake current within the start delay time window.
WARNING 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 cutout temperature of the control card is 85 °C
(185 °F).
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VLT® AQUA Drive FC 202
Troubleshooting
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WARNING 66, Heat sink temperature low
The drive 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 drive whenever the motor
is stopped by setting parameter 2-00 DC Hold/Preheat
Current to 5% and parameter 1-80 Function at Stop.
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 torque off (STO) 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 temperature
The temperature sensor on the power card is either too
hot or too cold.
Troubleshooting
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ALARM 70, Illegal FC configuration
The control card and power card are incompatible. To
check compatibility, contact the Danfoss supplier with the
type code from the unit nameplate and the part numbers
of the cards.
WARNING/ALARM 71, PTC 1 Safe Stop
Safe torque off (STO) has been activated from the VLT
Thermistor Card MCB 112 because the motor is too warm.
Once the motor cools and the digital input from the MCB
112 is deactivated, normal operation can resume when the
MCB 112 applies 24 V DC to terminal 37 again. When the
motor is ready for normal operation, a reset signal is sent
(via serial communication, digital I/O, or by pressing [Reset]
on the LCP). If automatic restart is enabled, the motor can
start when the fault is cleared.
ALARM 72, Dangerous failure
Safe torque off (STO) with trip lock. Unexpected signal
levels on safe torque off and digital input from the VLT
PTC Thermistor Card MCB 112.
WARNING 73, Safe Stop auto restart
Safe torque off (STO). With automatic restart enabled, the
motor can start when the fault is cleared.
Danfoss A/S © 01/2017 All rights reserved.
Check that the ambient operating temperature is
within the limits.
Check for clogged filters.
Check the fan operation.
Check the control card.
Check that the ambient operating temperature is
within limits.
Check for clogged filters.
Check fan operation.
Check the power card.
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PTC
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MG22A102