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+24 VDC Power System User Manual (Section 6013)
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Rev. G
74
Adjusting Float Output Voltage
Local MCA Control Panel Adjustment Procedure
1.
All controls are located on the MCA Interface Pad. Refer to
2.
With "SYSTEM OK" being displayed on the MCA Interface Pad, press and release the FUNCTION SET
ENTER pushbutton.
or
With "## ALARMS ACTIVE" being displayed on the MCA Interface Pad, press and release the
FUNCTION SET ENTER pushbutton. Repeatedly press and release the FUNCTION SELECT DOWN
arrow pushbutton until "FUNCTION MENU" is displayed. Press and release the FUNCTION SET ENTER
pushbutton.
3.
Repeatedly press and release the FUNCTION SELECT DOWN arrow pushbutton until "ADJUSTMENT
MENU" is displayed.
4.
Press and release the FUNCTION SET ENTER pushbutton.
5.
"ADJUST SYSTEM" is displayed.
6.
Press and release the FUNCTION SET ENTER pushbutton.
7.
"FLOAT = ##.##V" is displayed.
8.
Press and release the ALARM CUTOFF and FUNCTION SET ENTER pushbuttons simultaneously. The
"FLOAT =" portion of the display flashes.
9.
Observe the value displayed. This is the float voltage setting for all Rectifier Modules, assuming 50%
load. If the system is used with a battery charge digital temperature compensation probe, this value is
the float voltage setting at 25°C. To change this value, press and hold the FUNCTION SET YES (+) or
NO (-) pushbutton. Release the pushbutton when the desired value is displayed.
NOTE!
The float voltage value is prevented from being adjusted higher than 0.5V below the high
voltage shutdown setting. When used with a Battery Charge Digital Temperature Compensation Probe,
float voltage is prevented from being adjusted higher than 1V below the high voltage shutdown setting.
When used with a Battery Charge Digital Temperature Compensation Probe, float voltage is prevented
from being adjusted higher than the Maximum Voltage with Temperature Compensation setting, or
lower than the Minimum Voltage with Temperature Compensation setting.
The MCA is used in various applications, float voltage cannot be adjusted beyond the limits of the
Rectifier Module.
10.
With the desired float voltage value being displayed, press and release the FUNCTION SET ENTER
pushbutton.
11.
“ARE YOU SURE? + -” is displayed. Press and release the FUNCTION SET YES (+) pushbutton. The
display stops flashing.
NOTE!
The Rectifier Modules will assume the new value at their prevailing load current.