Danfoss Turbocor TG230, Service Manual

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96 of 132 M-SV-001-EN Rev.E
Troubleshooting
Table 19 - Motor Fault Types
Table 20- Bearing Fault Types
Compressor Description
Motor Single Phase Overcurrent
Fault
Measured peak current value of any single phase to motor (from Inverter)
exceeds the fault limit.
DC Bus Overvoltage Fault
The measured DC bus voltage has exceeded the Maximum Bus Voltage
limit.
Motor High Current Fault The motor current has exceeded Maximum Motor Current limit.
Inverter Error Inverter reports a generic error or communication to BMCC is lost.
Bearing Fault Active
If a bearing fault type is present, then the Bearing Error fault is triggered.
This is not an actual fault, only an indication that a fault has occurred in the
bearing section.
Rotor Starting Torque Fault
Indicates that rotor angular position is not at correct value for given speed
causing the Locked Motor Current maximum to be exceeded during
compressor start-up.
Low Inverter Current Fault
Measured current to motor (from Inverter) has not reached the Minimum
Power limit.
DC Bus Under/Over Voltage Fault
At 0 RPM: The measured DC Bus voltage is measured lower than the Soft
Start Bus Voltage limit.
24VDC Under/Over Voltage Fault The measured 24VDC supply is outside the range of the low or high limit.
Low Motor Back EMF Fault
The calculated motor back EMF has fallen below the minimum Back EMF
limit.
EEPROM Checksum Fault An error (checksum error) occurs reading the data table from the EEPROM.
Generator Mode Active
At greater than 0 RPM and DC bus voltage low, Generator mode is enabled,
switching the Inverter to rectifier function to maintain the DC bus voltage
until the shaft comes to a stop and delevitates.
SCR Ripple Voltage Fault The DC bus voltage ripple exceeds the SCR Voltage Ripple Fault limit.
System in Startup mode
The compressor initialization has not finished. Please wait. Compressor is
resetting after a power cycle. This is a status message.
Bearing Status Description
Startup Calibration Check Fault
During initialization, the bearing calibration data is checked for valid
values. Automatic calibration during compressor startup failed.
Excessive Axial Orbit
Axial Orbit has exceeded the limit longer than the maximum time
allowable.
Axial Overcurrent Fault
Axial Current has exceeded the limit longer than the maximum time
allowable.
Front Radial Displacement Fault
Front Radial Orbit has exceeded the limit longer than the maximum time
allowable.
Front Radial X Overcurrent Fault
Front Radial X Current has exceeded the limit longer than the maximum
time allowable.
Front Radial Y Overcurrent Fault
Front Radial Y Current has exceeded the limit longer than the maximum
time allowable.
Rear Radial Displacement Fault
Rear Radial Orbit has exceeded the limit longer than the maximum time
allowable.
Rear Radial X Overcurrent Fault
Rear Radial X Current has exceeded the limit longer than the maximum
time allowable.
Rear Radial Y Overcurrent Fault
Rear Radial Y Current has exceeded the limit longer than the maximum
time allowable.