Eaton 9170+ ASY-0652, User Manual

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Eaton 9170
+
Battery Charger Module User's Guide
S
164201399 Rev E
www.eaton.com/powerquality
9
Chapter 3
Operation
The Battery Charger Module operates in two automatic modes:
S
As a charger module within the UPS cabinet under control of the UPS
power modules
S
As an independent charger module located in an external battery
cabinet containing battery modules for the UPS system
UPS Cabinet Operation
When the Battery Charger Module is installed in the UPS cabinet, it
communicates through a controller area network (CAN) bus with the
power modules. The power modules monitor and control the battery
charger. Alarm conditions detected by the Battery Charger Module are
logged and announced by the UPS system (refer to the UPS user's
guide). Normal output voltage is 133 Vdc.
External Battery Cabinet Operation
When the Battery Charger Module is installed in an external battery
cabinet, it has no communication path with the UPS power modules.
Therefore, it controls its own operation, independent of any system
information within the power modules.
The module output current limit is set by the rear panel DIP switches.
An audible alarm signals module status and alarm conditions (see
“Troubleshooting” on page 21). Normal output voltage is 133 Vdc.
Output Foldback
If the Battery Charger Module senses a charged-battery condition, it
folds back its output voltage to prevent overcharging system batteries.
Output current is controlled by power modules on the UPS CAN bus or
by the rear panel DIP switches.