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EATON CORPORATION Cutler-Hammer
Pow-R-Command 750 LCD Display Instruction Leaflet IL01412018E Effective: February 2009
LCD Programming Procedure
1. Press the SEL key to begin. The Eaton logo will be displayed.
After a few seconds, the
INITIAL STATUS
screen will be displayed.
If the screen’s contrast is not adjusted properly, you can press and
hold the
UP
button to lighten the screen and press and hold the
DOWN
button to darken the screen.
2. Login
If user passwords have been created on your system by your distrib-
utor/installer, you will see the following screen. Use
UP/DOWN
to
enter the letters of your password/access code and the
SEL
key to
advance to the next letter. Advance the cursor past the end of the
blanks to submit the password/access code.
If this LCD tool has just been powered up, it will have to download a
database from the PRC750 controller. You may see the following
screen with the progress indicator:
The database may take about 10 to 20 seconds to download during
initial startup. Afterward, the
MAIN MENU
will be displayed. To bypass
the
REFRESHING DATABASE
screen, press the
BACK
key. The
refresh continues in the background.
Note:
In doing this, the load status table and group data will not be
refreshed until the refresh is complete.
Jan 10, 2008 11:28A
Group Status:
ON: ABC N
OFF: DEFGHIJKLM OP
Press SEL for menu
Jan 10, 2008 11:28A
Please Enter
Access Code
Jan 10, 2008 11:28A
Refreshing Database
Please wait... 57%
MAIN MENU
Command Groups ON/OFF
Panel Status Screen
Configure Groups
Configure Date/Time _
Group Status:
ON: ABC N
OFF: DEFGHIJKLM OP
3. Verification of Hardware
Verify that the Breaker Control Buses (BCBs) are properly addressed
and all necessary communication wiring has been terminated. Please
reference the PRC750 Installation Guide (IL01412008E.pdf) for fur-
ther directions on how to address the BCBs and properly connect
them to the PRC750 controller.
4. Discover Breakers
Discover breakers is located in the main menu. The first time the
Pow-R-Command Control Unit is powered up, it automatically
“discovers” the breakers that are connected to it through the Breaker
Control Buses (BCBs). This assumes that the addresses on the BCBs
have been set correctly (please see Step 3 above). Upon startup, a
good practice is to bypass all of the breakers ON and then OFF to
ensure proper communication and discovery. If the breakers have not
been discovered or the BCBs have not been addressed correctly,
then some or none of the intended breakers will operate. These sim-
ple steps can be performed in two ways: manually and through the
LCD display via the
ADVANCED MENU
.
MANUAL
When the LCD face is removed from the PRC control unit, the inner
circuitry and contacts are exposed to plain sight. Referencing the
drawing below shows the location of 5 pushbuttons that, when
depressed and held for 5 seconds each, perform various control
functions.
From left to right, the buttons are
RESET, BYPASS ON, BYPASS
OFF, BYPASS CLEAR
and
FIND LOADS
respectively. Before testing
the breakers and communication, press and hold the
FIND LOADS
(furthermost right) button for 5 seconds. After which, the
BYPASS
ON
and
OFF
buttons can be pressed and held for testing purposes.
Should there be any problems, to check for proper operation of all
breakers, each breaker has a red indicator for ON, check the wiring
and communication cables, as well as the BCB addressing. Upon a
successful test, make sure the
BYPASS CLEAR
button (2nd from
right) is pressed and held for 5 seconds to relinquish the overridden
state to the direction of the control unit once again.
Note:
When any load in the panelboard has been
BYPASSED ON
or
BYPASSED OFF
, a green bypass LED on the front of the controller will
be lit. When loads are bypassed, they will not follow schedule and/or
switch commands.
