10
EATON CORPORATION Cutler-Hammer
Pow-R-Command 750 LCD Display Instruction Leaflet IL01412018E Effective: February 2009
Troubleshooting Guide / FAQ
General Troubleshooting
Symptom 1:
The text on the LCD display is not visible/legible. There
is a blue backlight, but the text is washed out.
Cause:
The contrast on the LCD needs to be adjusted.
Solution:
Press the
BACK
key multiple times to ensure that you are
on the very first screen of the LCD. Press the
SEL
key one time.
Press and hold the
UP
arrow. The contrast should begin to lighten.
You can make the contrast darker by pressing and holding the
DOWN
arrow. The contrast can also be adjusted from within the
ADVANCED MENU
.
Symptom 2:
One or more Smart Breakers are not showing up in
CONFIGURE GROUPS.
Causes:
1. Subnetwork wiring from controller to each BCB in master and
expansion panelboards is not properly pulled/terminated.
2. BCBs are not properly addressed via DIP switches on each BCB.
3. Smart Breaker has not properly been connected to BCB
breaker port.
4. Breakers have not properly been discovered.
Solution:
Step 1: Make sure all subnetwork wiring from controller to each BCB
(including expansion panelboards) is properly terminated. (See
Figure 2
.)
Step 2: Ensure that each BCB is properly addressed via the DIP
switches on each BCB. (See
Figure 3
.)
Step 3: Make sure that each Smart Breaker is properly terminated
onto each BCB Breaker Port. Each Smart Breaker has a 4-pin connec-
tor that slides onto each 4-pin breaker port on the BCB. It is very easy
to misalign this connection.
Step 4: Discover breakers. Please reference the LCD Quick Start
Guide for complete details on how to properly discover all Smart
Breakers.
Note:
If Smart Breaker(s) still do not show up in configure groups
after completing these steps, please call the PRC Technical Support
Line at 1-888-252-6286, Option 3.
Documents to Reference:
1. Instruction Leaflet (IL01412012E).
Symptom 3:
After completing the above steps, one or more Smart
Breakers are not responding to issued commands.
Note:
Make sure all the above steps have been completed before
proceeding.
Causes:
1. The Smart Breaker(s) has/have been Overridden.
2. The black primary handle to the breaker is in the OFF position.
Definition of Overridden: Breaker is taken “out of service” or taken
out of normal operation. This means that the Smart Breaker will not
follow any issued commands. The breaker must be restored and put
back into service/normal operation to follow issued commands.
Solution:
1. Take a look at the status LEDs on front of the controller. They are
located next to the power switch to the controller. There will be
three LEDS. The top LED represents the power to the controller.
This LED is red and should be constantly ON. The middle LED is
the “override” LED. If any one of the Smart Breakers are overrid-
den, this LED will be lit. This LED is green. The bottom LED is
the network LED. It will blink RED during normal operation.
If the middle LED is lit/green, this means that the Smart
Breaker(s) is/are overridden and need to be restored back into
service. From the MAIN MENU of the LCD, scroll down and
select BYPASS LOADS ON/OFF (this should be the last option on
the MAIN MENU). Next, scroll down and select CLEAR BYPASS.
2. If it is safe to energize the load connected to each Smart Breaker,
ensure that the black primary handle to the breaker is in the ON
position. The Smart Breaker will not properly respond to issued
commands when the black primary handle is in the OFF position.
FIGURE 2.
FIGURE 3.
Subnetwork LAN
Address DIP Switches
BCB Breaker Port/
Termination
Subnetwork LAN/
Power Terminations
RUN, LAN and POWER
Status LEDs
