Code
num-
ber
Text
Troubleshooting
2820 LCP stack overflow
–
2821 Serial port overflow
–
2822 USB port overflow
–
3072–
5122
Parameter value is outside
its limits
–
5376–
6231
Internal fault.
Contact the supplier or
Danfoss Service
Department.
Table 5.6 Internal Fault Codes
WARNING 40, Overload of digital output terminal 27
Check the load connected to terminal 27 or remove the
short-circuit connection. Check
parameter 5-00 Digital I/O
Mode
and
parameter 5-01 Terminal 27 Mode
.
WARNING 41, Overload of digital output terminal 29
Check the load connected to terminal 29 or remove the
short-circuit connection. Also check
parameter 5-00 Digital
I/O Mode
and
parameter 5-02 Terminal 29 Mode
ALARM 46, Gate drive voltage fault
The supply on the power card is out of range.
There are 3 supplies generated by the switch mode power
supply (SMPS) on the power card:
•
24 V.
•
5 V.
•
±
18 V.
Troubleshooting
•
Check for a defective power card.
WARNING 47, 24 V supply low
The supply on the power card is out of range.
Troubleshooting
•
Check for a defective power card.
ALARM 51, AMA check U
nom
and I
nom
The settings for motor voltage, motor current, and motor
power are wrong.
Troubleshooting
•
Check the settings in
parameters
1–20
to
1–25
.
ALARM 52, AMA low I
nom
The motor current is too low.
Troubleshooting
•
Check the settings in
parameter 1-24 Motor
Current
.
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
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.
WARNING/ALARM 57, AMA internal fault
Try to restart 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 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 frequency converter. An external interlock has
commanded the frequency converter 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 frequency converter.
ALARM 63, Mechanical brake low
The actual motor current has not exceeded the release
brake current within the start delay time window.
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 80, Drive initialised to default value
Parameter settings are initialized to default settings after a
manual reset. To clear the alarm, reset the unit.
ALARM 87, Auto DC braking
Auto DC braking is a protective function against
overvoltage at coast.
Troubleshooting
•
Check that AC line input voltage does not exceed
maximum limit.
ALARM 95, Broken belt
Torque is below the torque level set for no load, indicating
a broken belt.
Parameter 22-60 Broken Belt Function
is set
for alarm.
Troubleshooting
•
Troubleshoot the system and reset the frequency
converter after clearing the fault.
ALARM 99, Blocked rotor
The rotor is blocked.
Diagnostics and Troubleshoo...
Programming Guide
MG03N202
Danfoss A/S © 11/2015 All rights reserved.
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