Danfoss iC2 Application Manual page 272

Application Guide | iC2-Micro Frequency Converters
Troubleshooting
Check for a defective power card.
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WARNING/FAULT 47, 24 V Supply Low
Cause
The 24 V DC is measured on the control card. This alarm appears when the detected voltage of terminal 12 is lower than 18 V.
Troubleshooting
Check for a defective control card.
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FAULT 50, AMA Calibration Failed
Troubleshooting
Contact the Danfoss supplier or service department.
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FAULT 51, AMA Check Unom and Inom
Cause
The settings for motor voltage, motor current, and motor power are wrong.
Troubleshooting
Check settings in P 4.2.2.1 Nominal Power to P 4.2.2.5 Nominal Speed.
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FAULT 52, AMA Low Inom
Cause
The motor current is too low.
Troubleshooting
Check the settings in parameter 1-24 Motor Current.
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FAULT 53, AMA Big Motor
Cause
The motor is too big for the AMA to operate.
FAULT 54, AMA Small Motor
Cause
The motor is too small for the AMA to operate.
FAULT 55, AMA Parameter Range
Cause
The AMA cannot run because the paramenter values of the motor are out of the acceptable range.
FAULT 56, AMA Interrupt
Cause
The AMA is manually interrupted.
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