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+24 VDC Power System User Manual (Section 6013)
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Rev. G
148
MCA Initialization and Basic Settings
When power is applied to the MCA (by reconnecting the input power plug to connector J15), the MCA
initializes. The MCA may…
•
briefly display the proper value for the MCA Configuration Spec. No. and System Voltage for two
seconds, then continue on.
•
display "MUST SET SPEC NO.".
•
briefly display an MCA Configuration Spec. No. and System Voltage for two seconds other than the
proper value, then continue on.
NOTE!
After power-up, you can also view the MCA Configuration Spec. No. Refer to Line Item "Spec.
No." in the MCA INVENTORY MENU. Another option if you miss the displayed MCA Configuration Spec.
No., is to simply remove and reapply MCA input power to restart the MCA initialization process.
Procedure 1
(The Proper MCA Configuration Spec. No.
and System Voltage was Briefly Displayed)
Perform one of the following steps, as determined by what is being displayed.
"SET ##V DEFAULTS" Displayed
Description: If the MCA detects that it is configured for proper voltage operation consistent with the Rectifier
Modules (e.g. set for 48V operation and 48V Rectifier Modules detected), the MCA then compares the output
capacities (amps) and serial numbers of all Rectifier Modules with what it has stored in memory. If any Rectifier
Module capacity does not match the value stored or if none of the serial numbers match, the MCA displays
"SET ##V DEFAULTS".
1.
Press and release the ALARM CUTOFF and FUNCTION SET ENTER pushbuttons simultaneously.
2.
At the "ARE YOU SURE? +-" prompt, press the FUNCTION SET YES (+) pushbutton.
3.
The MCA displays "INITIALIZING..." along with the maximum remaining initialization time in seconds
while it is resetting the variables, followed by "CHECK SETPOINTS".
4.
As you press the FUNCTION SELECT UP and DOWN arrow pushbuttons, each value listed later in this
procedure under "CHECK SETPOINTS ADJUSTABLE VALUES" is displayed.
a)
Change these settings to the values recorded in
at the beginning of this document.
b)
To change the setting of the currently displayed entry, press and release the ALARM CUTOFF and
FUNCTION SET ENTER pushbuttons simultaneously.
c)
The portion of the display before the equal sign (=) flashes.
d)
Use the FUNCTION SET YES (+) or NO (-) pushbutton to increase or decrease, respectively, the
setting.
e)
Press the FUNCTION SET ENTER pushbutton.
f)
At the "ARE YOU SURE? +-" prompt, press the FUNCTION SET YES (+) pushbutton to store the new
value, or the FUNCTION SET NO (-) pushbutton to cancel this operation without changing the
setting.
