From the Bcm4.0 Installation and Maintenance Guide;
Uninterruptable power supply
An uninterruptable power supply (UPS) is an optional device that maintains continuous operation
during power interruption or failure conditions. The UPS provides power source monitoring and
battery backup activation so that critical BCM functionality is maintained.
In a power failure situation, the UPS provides sufficient time to either correct the problem or
activate a contingency plan to sustain services. The UPS is configured to perform a graceful
shutdown of the BCM 2 minutes before the UPS battery power is drained.
The BCM system supports American Power Conversion (APC) UPS devices that use a USB
control interface. These include the APC UPS-Smart family (for example, UPS-Smart 750,
UPS-Smart 1000) and UPS-Back family (for example, UPS-Back 500 ES, UPS-Back 350 ES).
The UPS control software enables the configuration of various operational settings.
On BCM systems with more than one unit, the power supplies for all of the units must be
connected to a single UPS.
The UPS feature is supported in all markets (110~120V and 220~240V power standards).
Supported on previous Bcm versions as well.