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2.6 Alber Monitoring System—Optional
The Liebert matching battery cabinet allows installing an optional Alber battery monitoring system
in the cabinet. The Alber battery monitoring continuously checks all critical battery parameters, such
as cell voltage, overall string voltage, current and temperature. Automatic periodic tests of internal
resistance of each battery will verify the battery’s operating integrity. Additional capabilities include
automatic internal DC resistance tests and trend analysis providing the ability to analyze
performance and aid in troubleshooting.
The Alber monitoring system is installed inside the battery cabinet (see Figure 21). The monitoring
system requires approximately 0.5A, single-phase power.
This power can come from the output of the UPS the battery cabinet is suppling (see Figure 21).
The Alber monitoring system consists of a Controller Module and Data Collector Module (see
Figure 19). One Controller Module can monitor up to six battery cabinets with a Data Collector
Module installed. The battery cabinet with the Controller Module (Battery Cabinet #1) must be
installed in the position closest to the UPS.
For details about operating the Alber system, see the Alber Monitoring System manual, available at
the Liebert Web Site, www.liebert.com
2.7 External Battery Room Temperature Sensor—Optional
For systems that do not use Liebert NX Battery Cabinets, an optional temperature sensor can be
installed to monitor the ambient room temperature. This sensor is connected to the BIB board (see
Figure 6). This sensor will allow the Liebert NX UPS to perform temperature compensation
charging.
Figure 6 Battery temperature sensor control connection
TB1154
Battery Interface Board
P1153