Application Guide

Section 5877 User Instructions
Issue AQ, January 15, 2013 Spec. No. 582140000 (Models 802NLDB, 802NLEB and 802NL-B)
Page 3-22 Chapter 3. System Operating Procedures
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Programming the MCA Power Share Feature in the New Power System
After a New Power System has been connected to an Existing Power System and both
systems set for the same float voltage, you will have to configure the Power Share
parameters in the MCA of the New Power System.
Note: The “Power Share” feature is not compatible with the temperature compensation
feature. If temperature compensation is programmed ON, then “Turn Off
Temperature Compensation” is displayed in the Power Share menu. If Power
Share is programmed ON, then “Turn Off Power Share” is displayed in the
temperature compensation menu.
Note: The Rectifier current limit menu item setting is ignored when Power Share is
enabled. When Power Share is enabled, the message “PCU Current Limit Power
Share” is displayed in the PCU Current Limit menu.
Enabling Power Share
1) With SYSTEM OK being displayed on the MCA Interface Pad, press and release
the FUNCTION SET ENTER key. The FUNCTION MENU is displayed.
or
In the MAIN ALARM MENU, repeatedly press and release the FUNCTION
SELECT DOWN arrow key until "GO TO FUNCTION MENU" is displayed. Press
and release the FUNCTION SET ENTER key. The FUNCTION MENU is
displayed.
2) Repeatedly press and release the FUNCTION SELECT DOWN arrow key until
"ADJUST THE SYSTEM VOLTS & AMPS" is displayed.
3) Press and release the FUNCTION SET ENTER key.
4) Repeatedly press and release the FUNCTION SELECT DOWN arrow key until
"POWER SHARE IS OFF, TURN IT ON?" is displayed.
Note: If “TURN OFF TEMPERATURE COMPENSATION” is displayed, the MCA
is set for temperature compensation. Disable temperature compensation
and then return to this procedure.
5) Press and release the ALARM CUTOFF and FUNCTION SET ENTER keys
simultaneously. "ARE YOU SURE?" is displayed. Press and release the
FUNCTION SET YES (+) key.
6) Continue with the next procedure.
Setting the Power Share Initial Capacity Limit
1) From the previous procedure, press and release the FUNCTION SELECT
DOWN arrow key to display "PS INITIAL CAPACITY LIMIT = ##%".
2) Press and release the ALARM CUTOFF and FUNCTION SET ENTER keys
simultaneously.
3) Press and hold the FUNCTION SET YES (+) or NO (-) key to change this setting
as required. Release the key when the desired value is displayed.
Note: Enter the percentage value of the total capacity of the New Power System
that will initially feed the load. This value must be set to ensure that the
current delivered by the New Power System is lower than the total load
current from the existing and New Power Systems.
(Adjustable from 20% to 90%, factory set at 80%.)