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Installation, Operation and Technical Manual
6.1 MCSU-4 Components
The MCSU-4 is a supervisory and control unit for a DC plant comprising up to 225
rectifiers connected in parallel with up to four parallel battery banks. Number of battery
banks depends on type of MUIB used.
The unit is 1U in height and a magazine is available which fits across a 19" rack and
accommodates the MCSU-4, the MUIB as well as a space for a modem or other
equipment with a maximum dimensions 40x150x220 (HxWxD in mm). An RS232 port is
available on the front panel for connection to a portable PC.
6.1.1 Alpha-numeric Display
A two-line by 16 character alphanumeric display of either a back-lit LCD type or a vacuum
fluorescent type is supported. The 5mm high characters normally display output voltage
and current as well as the system status - Float (FL) or Equalise (EQ). This is the default
or "home" screen.
If an activity such as battery discharge testing is being performed, the current and voltage
are always displayed, while the second line alternates between the system status (FL/EQ)
and the activity status, for example "BDT in progress".
Whenever there is no push-button activity for more than one minute, the display
always reverts to this home screen. Note: the examples shown are for 48V systems.
6.1.2 Front Panel Pushbuttons
There are pushbuttons associated with the LCD screen for the purpose of entering
different Menus and for scrolling through the menus. The layout of the pushbuttons is
shown below:
Apart from the MCSU-4 or "Home" menu, which includes mostly system oriented
parameters, there are three other menus which can be accessed by momentarily pressing
the relevant pushbuttons:
a) SMR menu, which includes the rectifier related programmed parameters as well as
the output current and heat-sink temperature for each rectifier;
b) Battery menu in which all the parameters appertaining to the batteries are found;
c) Log which stores all the individual alarm information together with date and time
starting with the most recent alarm. A total of 1000 alarms are stored in memory.
158-1872-01
234A 54.5V
FL
46
Rectifier Technologies
19-Feb-14
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