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Configuration/Service Software (CSS) and Unified Network Configurator (UNC), or through alarms to
Unified Event Manager (UEM).
The maximum charging current available from the integrated charger is 3 A (48 VDC nominal system).
A battery with capacity no larger than 60 Ah should be connected to a single charger to ensure that the
charger maintains an adequate state-of-charge on the backup battery, and the backup battery is
restored to full capacity within a reasonable amount of time following operation on battery backup
power.
In addition to standard sealed lead-acid batteries (valve-regulated lead acid or gel cells), the power
supply supports charging of vented lead-acid and NiCd batteries.
2.1.4.3
Battery Temperature Sensor Cable
The integrated charger in the power supply performs temperature compensated battery charging when
a temperature sensor is connected. If the sensor is disconnected, the charger continues to operate as
an uncompensated charger with the charging profile following the minimum charger voltage specified
by the battery manufacturer.
Included is a 40 ft battery temperature sensor cable, which attaches to a battery pack, supplied by your
organization, and to the backplane of the device. This three-wire cable carries a voltage signal to the
power supply from the sensor element, which must be mounted close to the storage battery. Voltage is
proportional to the battery temperature, and the diagnostic circuitry in the power supply module. This
cable is extended to a total length of 190 ft using 50 ft extensions. See
Mounting on page
103.
IMPORTANT: Continuous operation with a disconnected sensor is not recommended.
2.1.4.4
ON/OFF Switch for Power Supply and Battery Charger
This table identifies the switch states for the power supply and battery charger.
Table 30: ON/OFF Switch - States for Power Supply and Battery Charger
Switch Position
ON (1)
OFF (0)
Chapter 2: GTR 8000 Base Radio Theory of Operation
Power Supply State
•
Power Factor Correction
(PFC) section is active (AC
input only)
•
Main DC converter runs to
create the MAIN and AUX
DC outputs
•
Main DC converter is turned
OFF and the MAIN and AUX
DC outputs become 0.0
VDC
MN003286A01-E
Battery Temperature Sensor
Battery Charger State
DLN6781A can be started if
desired (AC input only)
DLN6805A Disabled
Disabled (AC input only)
69
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Troubleshooting
