Normal Mode, ECO Mode, And CVCF (Constant Voltage Constant Frequency) Mode Explanations
Battery Backup Power, Inc. digital signal processing UPS / battery backup systems (BBP-AR series) have three operating modes. These systems are listed under "Active Backup Power" systems and have part numbers starting with BBP-AR.
1. Normal Mode (Default) - This mode keeps the inverter in a low power state and synchronized with utility (input) power so there is no delay in transferring to backup power when utility power is lost. The inverter will not take over or correct the voltage or frequency until either or both fall outside the pre-specified usable range. This mode is sufficient for most electronics and even high end computers as power is never lost when bridged between utility power and batteries. Some power, although minimal is consumed continuously to keep the inverter in its low power state.
2. ECO Mode - This mode enables the system function like a normal consumer grade UPS / battery backup. Like normal mode, the inverter will not take over or correct the voltage or frequency until either or both fall outside the pre-specified usable range. The acceptable range is wider and there is up to a 4 millisecond delay before the inverter takes over after utility power is lost. This mode is sufficient for consumer computers (won't be impacted by the short delay) and other electronics that aren't sensitive to millisecond loses of power or minor voltage/frequency fluctuations. Very little power is consumed in this mode and it is 5-7% more efficient than normal mode.
3. CVCF (Constant Voltage Constant Frequency) Mode AKA Generator Mode - This mode enables the full power conditioning and real-time backup power functions of the system. No matter what the input voltage and frequency are from the utility, the output will be regulated to a steady 120 volts 60 Hz (208, 220, 230, and 240 volts are available on some models). This mode is compatible with even the most sensitive electronics like mass spectrometers, home medical equipment, and forensic analyzers. Depending on the quality of the input power, about 10% of the power consumed by the system is lost to ensure the constant output voltage and frequency are maintained.
This mode also decouples the input power source from the output of the unit, so it is typically used with generator power. Unlike consumer grade UPS systems, this mode will allow the UPS to use generator power without depleting the batteries. The wildly variable frequency power from even older generators is usable by the UPS when in CVCF mode.
Input Incoming Voltage Example:
Input Incoming Frequency Example:
Output Outgoing Voltage Example:
120 Volts In CVCF (Constant Voltage Constant Frequency) Mode
Output Outgoing Frequency Example:
60 Hz In CVCF (Constant Voltage Constant Frequency) Mode
Factory Programming CVCF (Constant Voltage Constant Frequency) Mode