Version: 2020-09-04
152
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BACS – Installation with 2 or more BACS Webmanagers
The number of batteries a single BACS installation supports is limited to 500 batteries. If more than 500 batteries are in use, BACS
supports the installation and coordination of several BACS webmanagers. In this installation example, two BACS systems were
coordinated with each other to jointly manage a large battery field.
Following this installation method, there are two basic things you need to consider:
1- Each BACS Bus has to be run with it’s own BACS Webmanager
Two BACS web managers are not allowed to to address and gover the same BACS modules - they would interfere with each
other. If you have more than one BACS Web Manager in use, make sure that each BACS network forms a closed system for
itself. The BACS bus itself will not work with an uplink to two different BACS Webmanager.
2- All Batteries inside a BACS installation hast o be charged / used by the same UPS
As soon as the batteries of different UPS systems are charged and discharged, they are completely independent UPS
systems. It would be an invalid battery condition if e.g. A UPS indicates a discharge state, but the monitored battery is actually
charging because it belongs to a completely different UPS with it's own circuit.
In this example one UPS loads all batteries. To unleash the full regulation power of BACS, BACS 1 is connected to the UPS via RS232
cable while BACS 2 receives UPS data from BACS 1 by LAN via the RFC 1628 smart UPS interface. By doing so, a numerous
redundant reactions and very complex configuration options are possible to think about.
Note
Each BACS Web Manager is also a complete system for UPS and building monitoring. Since an emergency can be more than just a
power outage, you can control all installations like lifts, access control, lights, lifts, etc... A CS141 based system can perform emergency
management of an entire IT network, co-ordinate communication with parent and child systems, and much more.
With each additional web manager that joins your network, connectivity, control, and monitoring will be increased.
BACS – Installation bei einer USV mit Mittelabgriff
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