Haier Smart Power Series Service Manual page 195

Smart Power
PIM (Heat sink) temperature protection
Temperature more than 95°C, then drive shutdown protection.When the temperature is 90°C, recovery.
Compressor startup failure protection
The drive will attempt to start the compressor 5 times, at intervals of 15 seconds. When the drive is making five
times the driving signal cannot normally drive the compressor, for the protection of the relevant parts, compressor
immediately shut down, and the drive will have the compressor drive failure protection.
Limit frequency/shutdown protection
Compressor current protection:
Error protection
Compressor phase current> compressor phase current shutdown
Shutdown
protection current (RMS) , the compressor immediately stop, drive into the
protection
limitedfrequency overcurrent protection.
Compressor phase current>compressor Phase current Limit frequency
protection current (RMS) , the compressor will decrease the frequency by
the 2Hz/sec rate.
Limit
frequency
After compressor decrease the frequency, compressor phase current
protection
limit frequency protection current (RMS) ≥compressor phase current>
compressor phase current protection recovery current (RMS) , forbid
increase the compressor frequency.
Compressor phase current≤Compressor phase current protection recovery
Protection
current (RMS) , cancel the compressor limit frequency protection and
recovery
normally operation.
Input current protection of driver:
Error protection
Compressor phase current>compressor phase current shutdown
Shutdown
protection current (RMS) , the compressor immediately stop, drive into the
protection
limitedfrequency overcurrent protection.
Compressor phase current>compressor Phase current limit frequency
protection current (RMS) , the compressor will decrease the frequency by
the 2Hz/sec rate.
Limit frequency
After compressor decrease the frequency, compressor phase current
protection
limit frequency protection current (RMS) ≥compressor phase current>
compressor phase current protection recovery current (RMS) , forbid
increase the compressor frequency.
Compressor phase current≤Compressor phase current protection recovery
Protection
current (RMS) , cancel the compressor limit frequency protection and
recovery
normally operation
Protection condition
Protection condition
193
Error symbol
Limit frequency
protection
Forbid increase
the compressor
frequency
Error symbol
Limit frequency
protection
forbid increase
the compressor
frequency