Danfoss VLT HVAC Drive FC 102 Instruction Manual page 47

Diagnostics and Troubleshoo...
ALARM 53, AMA motor too big
The motor is too big 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 parameter values of the motor are outside of the
acceptable range. AMA cannot run.
ALARM 56, AMA interrupted by user
The user has interrupted the AMA.
ALARM 57, AMA internal fault
Try to restart AMA again. 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 4-18 Current Limit.
Ensure that motor data in parameters 1–20 to 1–25 are set
correctly. Possibly increase the current limit. Be sure that
the system can operate safely at a higher limit.
WARNING 60, External interlock
A digital input signal is indicating a fault condition external
to the adjustable frequency drive. An external interlock has
commanded the adjustable frequency drive to trip. Clear
the external fault condition. To resume normal operation,
apply 24 V DC to the terminal programmed for external
interlock. Reset the adjustable frequency drive.
WARNING 62, Output frequency at maximum limit
The output frequency has reached the value set in
4-19 Max Output Frequency. Check the application to
determine the cause. Possibly increase the output
frequency limit. Be sure the system can operate safely at a
higher output frequency. The warning clears when the
output drops below the maximum limit.
WARNING/ALARM 65, Control card overtemperature
The cut-out temperature of the control card is 176 °F [80
°C].
Troubleshooting
•
Check that the ambient operating temperature is
within limits.
•
Check for clogged filters.
•
Check fan operation.
•
Check the control card.
MG11AK22
Instruction Manual
WARNING 66, Heatsink temperature low
The adjustable frequency 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 adjustable
frequency drive whenever the motor is stopped by setting
2-00 DC Hold/Preheat Current at 5% and 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 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
•
•
•
•
ALARM 70, Illegal FC configuration
The control card and power card are incompatible. To
check compatibility, contact the Danfoss supplier with the
type code of the unit from the nameplate and the part
numbers of the cards.
ALARM 80, Drive initialized to default value
Parameter settings are initialized to default settings after a
manual reset. To clear the alarm, reset the unit.
ALARM 92, No-Flow
A no-flow condition has been detected in the system.
22-23 No-Flow Function is set for alarm. Troubleshoot the
system and reset the adjustable frequency drive after the
fault has been cleared.
ALARM 93, Dry pump
A no-flow condition in the system with the adjustable
frequency drive operating at high speed may indicate a
dry pump. 22-26 Dry Pump Function is set for alarm.
Troubleshoot the system and reset the adjustable
frequency drive after the fault has been cleared.
Danfoss A/S © 03/2015 All rights reserved.
Check that the ambient operating temperature is
within limits.
Check for clogged filters.
Check fan operation.
Check the power card.
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