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59
ELECTRICAL
Operation Mode
This Screen gives the general information about Load
Status.
The First Line shows the Status of the Magnum Battery
Charger. It will either be: Bat Charge Normal, under
complete Magnum Control, or Bat Charge Reduced, which
means an Owner activated appliance would have caused
a circuit breaker to trip but instead the Bat Charger Rate
has been reduced. Reducing the Battery will be the 1st
thing that PCS will attempt in order to reduce overall RV
Power. Battery Charge may not be reduced if the Battery
is Low, or the Magnum Inverter is on Line 1 Circuit Breaker
and the Overload is on Line 2 only.
•
The Second Line show the Status of the Magnum
Inverter. It will either show Inverter Normal, under
complete Magnum Control.
•
Inverter Assist, PCS is requesting that the Magnum
Inverter assist by temporarily generating 120VAC
power from the batteries.
•
Inverter Assist 12A, the end of this line shows
the amount of 120VAC current that the Inverter is
supplying.
•
Inverter Assist Deny, means the Magnum Inverter
can not Assist at this time, for one of many Magnum
Inverter reasons, i.e. Battery Low, Over-current, etc.
(See Magnum Owner’s Manual).
•
The Last Line shows if any Loads have been Shed
to prevent circuit breaker tripping. Load(s) Shed = 7,
depending on the model RV, there can be up to 7
Loads that PCS can control.
Load Status
Where the last Screen gave general information about
all the controlled Loads, these next two screens gives
detailed information about the status of each Load under
PCS control.
Water Heater OFF 11A, indicates that the Water Heater
power has been temporarily turned OFF, and the current
at the instant the Water Heater was turned off last was 11
amps.
Refrigerator ON 7A, indicates that the Refrigerator has
power. Again the 7amps of current is NOT the present
current draw, but rather the current at the instant the
Refrigerator was turned off last. A/C #2 ON, indicates that
the A/C #2 has power. Since there is no current displayed,
that only indicates that this load has not been turned OFF
even once since the Battery has been reconnected and
12V power applied to PCS. PCS has never had a chance
to “Learn” the current. The Current Displayed, is re-
learned each and every time that the Load is turned OFF.
Looking at the list, it appears that PCS does not turn off
Loads in Order Preference. PCS will always start shedding
loads from the top of the list when PCS in 30A or 20A
Service. However, in 50A Service, or running on the
Generator there are two Main Breaker, Line 1 & Line 2.
PCS will only shed loads if there is an overload detected
on its associated Line. In other words, if shedding the
Load will not help, skip it and move on. If then sometime
in the future an overload is detected on the other Line,
PCS will start at the top of the list again. The same is true
with Magnum Battery Charge Reduction and Inverter
Assist. Magnum can only help on the Line it is wired to, so
if it will not help to Assist, don’t bother.
Power Management
When the current exceeds the limit, because possibly
the owner has turned on the Microwave, the PCS will
independently limit the current on each line by performing
the following in order: Reduce Magnum Battery Charge
Rate, Inverter Assist, Load Shed. (If the Magnum Inverter is
wired to the opposite leg, only Load Shedding will occur.
As each appliance is shed, PCS learns the current for that
specific appliance, to ensure that there will be sufficient
headroom to turn the appliance back on and be under the
current limit. To ensure that Air Conditioner compressor
pressure is bled, and to reduce quick cycling, there is a 2
minute delay from the time a Load has been shed, to the
time power is restored.
Once the total RV current has dropped, for example
because an owner operated appliance has been
turned off, the PCS will reverse the above procedure,
returning power to appliances whose operation was not
immediately critical.
Line Status
PCS not only monitors total RV current but also has two
built in Volt Meters, and monitors the voltage on each of
the Lines.
L1 121Volts 15Amps, indicates that Line 1 has 121 Voltsrms
and is presently drawing 15 amps.
! Brown Out !, if the display indicates Brown Out, the
Display will hold the lowest captured voltage that may
have occurred while the RV owner is away. Pressing any
switch clears the display, and resumes displaying the
present readings.
Wiring Status
Similar to an Outlet Tester that is plugged into outlets in
your home to test for proper wiring, PCS monitors the
wiring status of the Camp Ground Outlets you may plug
into.
WARNING, IF THE DISPLAY EVER INDICATES “Wiring
Status Error,” IMMEDIATELY, unplug the RV from the outlet,
and have the outlet inspected by a qualified technician.
The other lines on the Display to the right indicate proper
wiring for 50A Service. For 30A Service L1=L2.
Source(s): Precision Circuits Power Control System 50A (Rev052207)
Product(s): Precision Circuit Energy Management System Remote
Display (Model: 00-10019-050, Newmar Part Number: 127558 )
Summary of Contents for Kountry Star 2022
Page 1: ...SM 2022...
