Brochures and Data Sheets
UM1R483500E User Instructions
Issue AG, November 20, 2012 Spec. No. 1R483200 (Model R48-3200)
Spec. No. 1R483200E (Model R48-3200E)
Spec. No. 1R483500E (Model R48-3500E)
Page 14
This document is property of Emerson Network Power, Energy Systems, North America, Inc. and contains confidential and proprietary information owned by Emerson Network Power, Energy
Systems, North America, Inc. Any copying, use, or disclosure of it without the written permission of Emerson Network Power, Energy Systems, North America, Inc. is strictly prohibited.
Communication Failure: The Rectifier’s protection indicator (yellow) will flash
should it experience a communication failure. The failure information will be reported
to the Controller and the Controller will process the failure accordingly. During a
communication failure, in order to protect the battery, the Rectifier output voltage will
automatically be adjusted as follows. When used with the SCU+ Controller, Rectifier
output voltage goes to a default value (53.5 V, which can be modified using the
SCU+ Controller). When used with the ACU+ Controller, Rectifier output voltage
goes to the ACU+ float voltage setting (this setting is stored in the Rectifier). The
Rectifier will revert to normal operation once normal communication is restored.
Rectifier Output Current Imbalance:
a) When the average current of all Rectifier Modules is greater than 20% of full
rated current, and the difference between local Rectifier Module current and
average current is greater than 16% of full rated current, the yellow protection
indicator will illuminate.
b) When the average current of all Rectifier Modules is greater than 10% of full
rated current, and local Rectifier Module current is less than 1.5% of full rated
current, then the red fault indicator will illuminate.