Use and Care Manual

If there is any doubt about sizing the battery, it is
safe to overestimate the Amp hour requirements of
the battery.
Note: The type of batteries you use to power your
high-power inverter is important. Operating a high-power
inverter will routinely discharge batteries and they will
require frequent recharging. Batteries used to start engines
are not designed to repeatedly charge and discharge. We
recommend using “deep-cycle” or “marine” rated batteries.
CABLE GAUGES
When connecting the inverter to a battery use the thickest
stranded insulated copper wire available in the shortest
length practical.
MOUNTING THE INVERTER
Your inverter should not be mounted under the hood of a
vehicle. If installing in a vehicle, choose a dry, cool,
ventilated area as close to the battery as practical. Before
drilling any mounting holes, make sure that there are no
wires, fuel lines, or tanks directly behind the surface
to be drilled.
To mount the Inverter:
1. Inverter ON/OFF switch must be in the OFF position.
2. The inverter should be mounted horizontally.
LENGTH
RECOMMENDED SIZE
1ft
2ft
3ft
4ft
5ft
6ft
7ft
8ft
9ft
10ft
AMPERAGE 200A 300A 400A 500A
CMN2000W
6AWG
4AWG
4AWG
2AWG
2AWG
1/0AWG
2/0AWG
3/0AWG
3/0AWG
3/0AWG
4AWG
4AWG
2AWG
2AWG
1AWG
1/0AWG
2/0AWG
3/0AWG
3/0AWG
3/0AWG
4AWG
3AWG
2AWG
1AWG
1/0AWG
2/0AWG
3/0AWG
4/0AWG
4/0AWG
4/0AWG
4AWG
2AWG
1AWG
1AWG
2/0AWG
2/0AWG
3/0AWG
4/0AWG
4/0AWG
4/0AWG
CMN3000W CMN4000W CMN5000W
CMN2000W / CMN3000W / CMN4000W / CMN5000W
Please read this manual thoroughly before installing and
operating your Inverter. This manual contains information
you need to obtain the performance required for your
application. Keep this manual for future reference. The
Cummins
™
Bluetooth
®
inverter is the first of its kind in the
market! This inverter has high starting capability and max
efficiency up to 90%.
The Cummins
™
inverter can connect with all Android
™
and
iOS smartphones. Our phone APP can help you check and
monitor the battery voltage, output power, and product
temperature. Set up the protections such as under voltage,
over voltage, overload, and over-temperature at a distance!
Also included are personal settings and battery testing,
with a user friendly experience.
WELCOME TO THE FUTURE OF POWER INVERTERS!
WARNINGS, CAUTIONS, AND NOTES
It's very important that any operator and installer of this
inverter read and follow all WARNINGS, CAUTIONS, AND NOTES
and all installation and operation instructions, in particular,
comply with WARNINGS (possibility of serious injury or death),
CAUTIONS (possibility of damage to the inverter and/or other
equipment), and NOTES (included to assist you in achieving
the maximum performance and longest working life from
this advanced-design inverter).
WARNINGS: INVERTER OUTPUT
This heavy-duty device produces voltages similar to
commercial AC power.
• Danger of shock or electrocution; treat inverter output the
same as commercial AC power.
• Do not use the inverter near flammable materials or in any
locations that may accumulate flammable fumes or gases.
This is an electrical device that can briefly spark when
electrical connections are made or broken.
• Do not allow water or other liquids to contact the inverter.
• Do not use appliances with damaged or wet cords.
• Do not connect to transfer switch.
• Do not connect to household outlets.
CAUTIONS: INVERTER OPERATING ENVIRONMENT
• Surrounding air temperature should be between
32℉-104℉.
• Keep the inverter away from direct sunlight, if possible.
• Keep the area surrounding the inverter clear to ensure
free air circulation around the unit. Do not place items on
or over the inverter during operation. The unit will shut
down if the internal temperature gets too hot. Restart
the inverter after it cools.
• Your inverter will only operate from a 12V power source.
Do not attempt to connect the inverter to any other power
source, including any AC power source. Do not reverse the
DC input polarity-this will void the warranty.
APPLIANCE CAUTIONS
• DO NOT plug in battery chargers for cordless power tools
if the charger carries a warning that dangerous voltages
are present at the battery terminals.
• Certain chargers for small nickel-cadmium or nickel-
metal-hydride batteries can be damaged if powered by this
inverter. Two types of appliances are susceptible to
damage: Small, battery-operated appliances such as
flashlights, cordless razors, and toothbrushes that plug
directly into an AC receptacle.
• Some fans with synchronous motors may slightly increase
in speed (RPM) when powered by the inverter. This is not
harmful to the fan or to the inverter.
• Use safety approved extension cords rated at 15A
or higher.
• GFCI devices may not work with modified sine wave
(MSW) power.
• This inverter is not tested for use with medical equipment.
• Do not use power strips with surge protection.
FEATURES
1. Positive Power Input Terminal.
2. Negative Power Input Terminal.
3. High-Speed Cooling Fans. When the temperature inside
the inverter exceeds a preset limit, the cooling fan
automatically turns on to cool the inverter. When the
temperature reduces, the fan turns off.
4. Ground terminal.
5. Two screws to attach removable control panel.
6. Circuit breaker.
7. Four (4) standard North American AC outlets, each
rated at 15 Amps.
8. Detachable LCD display which can display battery
voltage, power watts and fault display.
9. ON/OFF Switch. Turn the inverter ON and OFF.
10. Standard USB output 2.4A and USB-C
®
output 18W.
11. Voice alarm speaker.
12. Ventilation hole.
13. AC socket.
14. Backlight. The red backlight could be controlled
ON/OFF through settings in Cummins
™
APP.
DETERMINING THE DC POWER REQUIREMENTS
Your inverter requires the input of a 12-volt battery. To
calculate the approximate power in Amps for a 12-volt
battery you need to know the current, or Amps required for
powering the continuous AC load. A shortcut method is to
divide the continuous AC load wattage by 10. For example,
the continuous AC load is 3000W. The current Amperage is:
3000/10 or 300A at 12V DC. Add to the load any DC
appliances that may be powered by the battery bank.
SIZING THE BATTERY
To determine the minimum battery Amp-Hour (AH) rating
that you will need to operate appliances from the inverter,
and any DC appliances powered by the battery, follow
these steps:
1. List the maximum wattage that the inverter has to
provide (as above).
2. Estimate the number of hours the appliances will be in
use between battery recharges. This will vary depending
on appliances. As an example, a typical home-use
coffeemaker draws 500W during its brew time of
5 minutes, it maintains the temperature of the pot at
about 100W. Typical use of a microwave oven is only for
a few minutes. Some longer operating time appliances
are lamps, TVs, computers and refrigerator/freezers.
3. Determine the total watt-hours of energy needed. Then
multiply the average power consumption in watts by the
number of hours of run time. For example: 2000W for
10 hours = 20,000W hours. Using the 2000W (or
200A) for 10 hours example as above, then 200A
is needed for 10 hours. This provides us with the basic
AH of battery that is required. Ten hours at 200A equals
2000AH. However, there are other conditions that
determine actual run time.
These include:
• AC appliance load and time in use (Basic Amp Hour)
• Cable gauge and length
• Charge level of the batteries (between use, chargers have
to be able to fully charge the batteries)
• Temperature of the batteries (colder batteries provide
fewer Amps)
• Age and condition of the batteries (older batteries lose
capacity AH)
• Compliance with turning off unnecessary AC and
DC loads.
• This inverter is not tested for use in marine applications.
• In the event of a continuous audible alarm or automatic
shutdown, turn the inverter OFF immediately. Do not
restart the inverter until the source of the problem has been
identified and corrected.
• When using your Cummins
™
inverter to power lead acid
battery chargers (like those used for a car, boat or
motorcycle) with modified sine wave, check the
temperature of the battery charger after 10 minutes. If the
battery charger becomes hot, immediately disconnect it
from the inverter and allow it to cool before resuming the
charging operation.
WARNING: DANGER OF BATTERY EXPLOSION –
INSTALL A FUSE
Batteries can deliver very high levels of current that can
vaporize metal, start fires and cause explosions. Cummins
™
recommends installing ANL type fuse/holder or circuit
breaker close to the positive battery bank terminal. This fuse
protects the batteries from accidental DC cable shorts,
which can cause batteries to explode. ANL fuses and fuse
holders are available at most hardware supply stores.
CAUTIONS
• Loose connections can result in a severe decrease in
voltage that can cause damage to cables & insulation.
• Failure to make correct polarity (Pos/Neg) connection
between the inverter and the battery bank can result in
blowing fuses in the inverter & can permanently damage
the inverter. Damage caused by reversed polarity is not
covered under the warranty.
• Making the connection to the Positive terminal may cause
a spark as a result of current flowing to charge capacitors
within the inverter. This is a normal occurrence.
• Because of the possibility of sparking, it is extremely
important that both the inverter and the 12-volt battery be
positioned far from any possible source of flammable
fumes or gases. Failure to heed this warning could result in
fire or explosion.
• Operating the inverter without correctly grounding the unit
may result in an electrical shock.
GETTING STARTED
When some tools turn on, there is an initial surge of power
to start. This surge of power is referred to as the “starting
load" or "peak load." Once started, the tool or appliance
requires less power to operate. This is referred to as the
"continuous load" in terms of power requirements. You will
need to determine how much power your tool or appliance
requires to start up (starting load) and its continued running
power requirements (continuous load).
Power consumption is rated in watts or it can be calculated
from Amperes (Amps). This information is usually stamped
or printed on most appliances and equipment. If this
information is not indicated on the appliance or equipment,
check the owner's manual. For electrically sensitive
equipment, contact the manufacturer to determine if the
device you are using is compatible with modified sine
wave AC.
Multiply: AC AMPS x 110 (AC voltage) = WATTS
This formula yields a close approximation of the continuous
load of your appliance.
Multiply: WATTS x 2 = Starting Load for most appliances
This formula yields a close approximation of the starting
load of most appliances. Exceptions are motorized
appliances such as pumps, freezers and air conditioners.
These appliances can have startup loads of up to eight
times the rated watts.
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