Honeywell 3G SmartVFD HVFD3D3A0015 Installation And User Manual page 75

• If a 24 V DC power supply is used, verify proper supply power.
WARNING 47, 24 V supply low
The 24 V DC is measured on the control card. This alarm arises when the detected
voltage of terminal 12 is lower than 18 V.
Troubleshooting
• Check for a defective control card.
WARNING 48, 1.8 V supply low
The 1.8 V DC supply used on the control card is outside of allowable limits. The
power supply is measured on the control card. Check for a defective control card. If
an option card is present, check for an overvoltage condition.
WARNING 49, Speed limit
When the speed is not within the specified range in 4-11 Motor Speed Low Limit
[RPM] and 4-13 Motor Speed High Limit [RPM], the adjustable frequency drive
shows a warning. When the speed is below the specified limit in 1-86 Trip Speed
Low [RPM] (except when starting or stopping), the adjustable frequency drive trips.
ALARM 50, AMA calibration failed
Contact Honeywell supplier or Honeywell service department.
ALARM 51, AMA check Unom and Inom
The settings for motor voltage, motor current and motor power are wrong. Check
the settings in parameters 1-20 to 1-25.
ALARM 52, AMA low Inom
The motor current is too low. Check the settings.
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 can-
not 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.
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