296 | Section 8 Electrical System ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- ----------------- Monarch SE 2004
The Energy Management System is easily identified by the remote display
panel located inside motorhome.
The 50 Amp Smart EMS consists of two elements: the display panel and the
bedroom distribution panel. The distribution panel, located in the bedroom, is a
completely self-contained 120/240 Volt power distribution and energy management
system intended to be used in recreational vehicles. It is housed in a sheet metal
enclosure with removable front panel. It provides circuit protection for all the 120
Volt AC loads in the motorhome and a system of energy management to minimize
the over-loading and tripping of circuit breakers.
Circuit Breakers: The distribution panel offers slots for eight single or dual,
standard 120 Volt circuit breakers. Two of these breakers, located in the two center
positions, must be a 50 Amp unit that act as a main input protection for each of the
lines supplying the remainder of the branch breakers (up to 12).
Energy Management: The 50 Amp Smart EMS automatically senses the available
power to the motorhome, determining whether it is connected to a 120 Volt
AC-30 Amp shore power source, 50 Amp shore power source or generator source.
Depending upon available power, the EMS controls the operation of 6 possible loads
as indicated on the distribution panel. These may be any type load, but are typically
heavier loads; those whose use can be “postponed until a time when current is available
for use. If the available power source is 120 Volt AC - 30 Amp shore power, the
EMS attempts to keep the total 120 Volt current draw to less than 30 Amps.
Operation: If 120 Volt AC is not available at the distribution panel, L1 or L2
outputs, the system shuts itself off. This feature is intended to prevent the system
from drawing current from the +12 Volt DC battery supply when not in operation.
When 120 Volt AC power is applied, the system automatically powers up and
determines the nature of the power source.
If the generator is running, 120 Volt AC will be present at the distribution panel
L1 and L2 inputs. In this mode the energy management feature is disabled and all
control relay contacts are closed, energizing all of the controlled loads. The control
module sends a signal to the display panel causing the load meter to display actual
load current, the GEN SET service indicator to light and all power status indicators
to light.
Energy
Management
System
(Optional)
060082
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