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Smart Power
DC bus over/under voltage protection
Bus voltage>overvoltage shutdown value, the compressor stop, then drive into the bus overvoltage protection.
Bus voltage<overvoltage recovery value, cancel the bus overvoltage protection.
Bus voltage<under voltage shutdown value, the compressor stop, then drive into the bus under voltage protection.
Bus voltage>voltage recovery value, cancel the bus under voltage protection.
AC input over/under voltage protection
Drive come with AC voltage detection, avoid the input voltage is too low, cause the input current is too high,
damage the device.
Input voltage<under voltage shutdown value, the compressor stop, then drive into the input under voltage
protection.
Input voltage>voltage recovery value, cancel the under voltage protection.
Drive come with AC voltage detection, avoid the input voltage is too high, damage the device.
Input voltage>overvoltage shutdown value, the compressor stop, then drive into the input overvoltage protection.
Input voltage<overvoltage recovery value, cancel input overvoltage protection.
Communication error
If model code is our of model range or no right communication data is received within 30s, communication failure is
conrmed, execute stop protection under communication failure, in the meanwhile, relevant error code is sent back.
When communication is conrmed, if right data is received again and within normal range, error is removed.
PFC switch value
When PFC sampling current>PFC open switch current and the DC bus average voltage<PFC open switch voltage,
then opening PFC;
When PFC sampling current<PFC off switch current, off PFC.
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