Application Guide

Section 5877 User Instructions
Issue AQ, January 15, 2013 Spec. No. 582140000 (Models 802NLDB, 802NLEB and 802NL-B)
Page 5-8 Chapter 5. System Maintenance
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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.
ADDING A RECTIFIER
To increase system current capacity, an additional Rectifier can easily be installed in an
existing bay that contains an empty Rectifier mounting position. Follow the procedure
detailed below. A Rectifier may be installed in a live system.
The Rectifier weighs approximately 40 lbs.
Rectifiers can be inserted or removed with power applied (hot swappable).
Procedure
1) Remove the blank panel from the Rectifier mounting position. Save this panel.
The panel must be re-installed if a Rectifier is removed.
2) Ensure that the Standby/Operate switch on the Rectifier to be installed is in the
"standby" position.
Note: In the next step, a safety latch is present on the left-hand (as viewed from the
front) side panel of each Rectifier. The latch is designed to prevent the
Rectifier from inadvertently being removed completely from the Bay once it
has been installed. It should not be necessary to depress the safety latch
release when installing the Rectifier.
3) Install the Rectifier into the bay by sliding it evenly into its mounting position.
Secure the Rectifier to the bay by tightening the captive fasteners on the
Rectifier.
4) Place the Standby/Operate switch on the Rectifier installed to the I "operate"
position.
5) The MCA automatically adds the capacity of the new Rectifier to the current limit
and displays the new current limit setting.
6) If the current limit setting is correct, go to step 10). If the current limit setting is
not correct, press and release the ALARM CUTOFF and FUNCTION SET
ENTER pushbuttons simultaneously.
7) Observe the value displayed. This is the system current limit setting. Reset this
value to the new current limit setting. Each Rectifier’s current limit circuit will be
automatically adjusted to ensure that system current does not exceed this value.
To change this value, press and hold the FUNCTION SET YES (+) or NO (-)
pushbutton. Release the pushbutton when the desired value is displayed.
8) With the desired current limiting value being displayed, press and release the
FUNCTION SET ENTER pushbutton.
9) “ARE YOU SURE?” is displayed. Press and release the FUNCTION SET YES
(+) pushbutton.
Note: The system current limit value will not be changed and the adjustment
mode will be exited if the FUNCTION SET YES (+) pushbutton is not
pressed within 10 seconds of the “ARE YOU SURE?” prompt.
10) Press and release the FUNCTION SET YES (+) and NO (-) pushbuttons
simultaneously, to return to the beginning of the MCA menu tree.
11) Ensure that there are no local or remote alarms activated on the system.