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
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/ALARM 61, Feedback error
An error is detected between calculated speed and speed
measurement from feedback device.
Troubleshooting
•
Check the settings for warning/alarm/disabling in
parameter 4-30 Motor Feedback Loss Function
.
•
Set the tolerable error in
parameter 4-31 Motor
Feedback Speed Error
.
•
Set the tolerable feedback loss time in
parameter 4-32 Motor Feedback Loss Timeout
.
WARNING 62, Output frequency at maximum limit
If the output frequency reaches the value set in
parameter 4-19 Max Output Frequency
, the drive issues a
warning. The warning ceases when the output drops
below the maximum limit. If the drive is unable to limit
the frequency, it trips and issues an alarm. The latter may
happen in the flux mode if the drive loses control of the
motor.
Troubleshooting
•
Check the application for possible causes.
•
Increase the output frequency limit. Ensure that
the system can operate safely at a higher output
frequency.
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 combination of load and speed requires 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).
Troubleshooting
•
Check that the ambient operating temperature is
within the limits.
•
Check for clogged filters.
•
Check the fan operation.
•
Check the control card.
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
•
Check that the ambient operating temperature is
within limits.
•
Check for clogged filters.
•
Check fan operation.
•
Check the power card.
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
®
PTC 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) activated. With automatic restart
enabled, the motor can start when the fault is cleared.
ALARM 74, PTC Thermistor
Alarm related to VLT
®
PTC Thermistor Card MCB 112. The
PTC is not working.
ALARM 75, Illegal profile sel.
Do not write the parameter value while the motor is
running. Stop the motor before writing the MCO profile to
parameter 8-10 Control Profile
.
Troubleshooting
Service Guide
MG94A502
Danfoss A/S © 02/2019 All rights reserved.
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Содержание VLT FC Series
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