ñòð.64 Warnings and Alarms VLT® HVAC Drive Operating Instructions

Warnings and Alarms VLT® HVAC Drive Operating Instructions

/library/Danfoss/Ïðåîáðàçîâàòåëè ÷àñòîòû/VLT HVAC Drive/doc_MG11AG02. Operating instruction.pdf\nWarnings and Alarms VLT® HVAC Drive Operating Instructions
ALARM , AMA check Unom and Inom Increase the ambient temperature of the unit. Also, a
The settings for motor voltage, motor current, and motor trickle amount of current can be supplied to the frequency
power are wrong. Check the settings in parameters 1- to converter whenever the motor is stopped by setting
1-25. - DC Hold/Preheat Current at 5% and 1- Function at
Stop
ALARM , AMA low Inom
The motor current is too low. Check the setting in ALARM , Option module configuration has changed
4- Current Limit. One or more options have either been added or removed
since the last power-down. Check that the configuration
ALARM , AMA motor too big
change is intentional and reset the unit.
The motor is too big for the AMA to operate.
ALARM , Safe stop activated
ALARM , AMA motor too small
Loss of the V DC signal on terminal has caused the
The motor is too small for the AMA to operate.
filter to trip. To resume normal operation, apply V DC to
ALARM , AMA Parameter out of range terminal and reset the filter.
The parameter values of the motor are outside of the
ALARM , Power card temperaturePower card
acceptable range. AMA will not run.
temperature
ALARM , AMA interrupted by user The temperature sensor on the power card is either too
The AMA has been interrupted by the user. hot or too cold.
ALARM , AMA timeout Troubleshooting
Try to restart AMA again. Repeated restarts may over heat Check that the ambient operating temperature is
the motor. within limits.
ALARM , AMA internal fault Check for clogged filters.
Contact your Danfoss supplier.
Check fan operation.
WARNING , Current limit
The current is higher than the value in 4- Current Limit.
Check the power card.
Ensure that Motor data in parameters 1- through 1- ALARM , Illegal FC configuration
are set correctly. Possibly increase the current limit. Be sure The control card and power card are incompatible. Contact
the system can operate safely at a higher limit. your supplier with the type code of the unit from the
nameplate and the part numbers of the cards to check
WARNING , External interlock
compatibility.
A digital input signal is indicating a fault condition external
to the frequency converter. An external interlock has ALARM , Unit initialised to default value
commanded the frequency converter to trip. Clear the Parameter settings are initialised to default settings after a
external fault condition. To resume normal operation, manual reset. Reset the unit to clear the alarm.
apply V DC to the terminal programmed for external ALARM , No flow
interlock. Reset the frequency converter. A no-flow condition has been detected in the system.
WARNING , Output frequency at maximum limit - No-Flow Function is set for alarm. Troubleshoot the
The output frequency has reached the value set in system and reset the frequency converter after the fault
4- Max Output Frequency. Check the application to has been cleared.
determine the cause. Possibly increase the output ALARM , Dry pump
frequency limit. Be sure the system can operate safely at a A no-flow condition in the system with the frequency
higher output frequency. The warning will clear when the converter operating at high speed may indicate a dry
output drops below the maximum limit. pump. - Dry Pump Function is set for alarm.
WARNING/ALARM , Control card over temperature Troubleshoot the system and reset the frequency converter
The cutout temperature of the control card is ° C. after the fault has been cleared.
Troubleshooting ALARM , End of curve
• Check that the ambient operating temperature is Feedback is lower than the set point. This may indicate
within limits. leakage in the system. - End of Curve Function is set for
alarm. Troubleshoot the system and reset the frequency
• Check for clogged filters.
converter after the fault has been cleared.
• Check fan operation.
ALARM , Broken belt
• Check the control card. Torque is below the torque level set for no load, indicating
WARNING , Heatsink temperature low a broken belt. - Broken Belt Function is set for alarm.
The frequency converter is too cold to operate. This Troubleshoot the system and reset the frequency converter
warning is based on the temperature sensor in the IGBT after the fault has been cleared.
module.
MG.11.AG. - VLT® is a registered Danfoss trademark