Magnum Energy MMS S User Manual
MMS Series
Inverters/Chargers
Owner’s Manual
Disclaimer of Liability
The use of this manual and the conditions or methods of installation,
operation, use, and maintenance of the MMS Series inverter/
charger are beyond the control of Magnum Energy, Inc. Therefore,
this company assumes no responsibility and expressly disclaims
any liability for loss, damage, or expense whether direct, indirect,
consequential, or incidental that may arise out of or be in any way
connected with such installation, operation, use, or maintenance.
Due to continuous improvements and product updates, the images
shown in this manual may not exactly match the unit purchased.
Restrictions on Use
The MMS Series inverter/charger may only be used in life support
devices or systems with the express written approval of Magnum
Energy. Failure of this inverter can reasonably be expected to cause
the failure of that life support device or system, or to affect the safety
or effectiveness of that device or system. If the MMS Series inverter
fails, it is reasonable to assume that the health of the user or other
persons may be endangered.
Copyright Notice
Copyright © 2014 by Magnum Energy, Inc. All rights reserved.
Permission to copy, distribute, and/or modify this document is
prohibited without express written permission from Magnum Energy.
Document Information
Description – MMS Series Owner’s Manual
Part Number and Revision – 64-0036 Rev B
Date Published – March 2014
This entire manual is available for download—with many of the
diagrams available in color—under the Document Library tab on our
website at:
www.magnumenergy.com
Contact Information
Magnum Energy, Inc.
2211 West Casino Rd.
Everett, WA 98204
Phone: (425) 353-8833
Fax: (425) 353-8390
Record the unit’s model and serial number in case you need to
provide this information in the future.
Model: Serial Number:
MMS1012 U1
MMS1012-G U1
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© 2014 Magnum Energy, Inc.
Conventions Used in this Manual (terminology)
Shorepower or External AC power – refers to alternating current
(AC) provided by the utility electric power grid or from a generator.
Mobile application – refers to inverters used in a recreational vehicle
(RV), boat, or a truck installation.
Safety Symbols
To reduce the risk of electrical shock, fi re, or other safety hazard, the
following safety symbols have been placed throughout this manual
to indicate dangerous and important safety instructions.
WARNING: This symbol indicates that failure to take a
specifi ed action could result in physical harm to the user.
CAUTION: This symbol indicates that failure to take a
specifi ed action could result in damage to the equipment.
Info: This symbol indicates information that emphasizes
or supplements important points of the main text.
IMPORTANT PRODUCT SAFETY INSTRUCTIONS
This manual contains important safety instructions that must be followed during the installation and operation of this product. Read all
instructions and safety information contained in this manual before
installing or using this product.
• All electrical work must be performed in accordance with local,
state, and federal electrical codes.
• This product is designed for indoor/compartment installation.
DO NOT expose to rain, snow, moisture, or liquids of any type.
• Use insulated tools to reduce the chance of electrical shock or
accidental short circuits.
• Remove all jewelry (such as rings, watches, bracelets, etc.,) when
installing or performing maintenance on the inverter.
• Always disconnect the batteries or energy source prior to installing or performing maintenance on the inverter. Live power may
be present at more than one point since an inverter utilizes both
batteries and AC. Turning off the inverter may not reduce this
risk. As long as AC power is connected, it will pass through the
inverter regardless of the ON/OFF power switch setting.
• Always verify proper wiring prior to starting the inverter.
• Do not operate the inverter if it has been damaged.
• Do not dismantle the inverter; there are no user-serviceable parts
contained in this product. Attempting to service the unit yourself
could cause electrical shock. Internal capacitors remain charged
after all power is disconnected.
© 2014 Magnum Energy, Inc.
ii
• No AC or DC disconnects are provided as an integral part of this
inverter. Both AC and DC disconnects must be provided as part
of the system installation.
• No overcurrent protection for the battery supply is provided as
an integral part of this inverter. Overcurrent protection of the
battery cables must be provided as part of the installation.
• No overcurrent protection for the AC output wiring is provided
as an integral part of this inverter. Overcurrent protection of the
AC output wiring must be provided as part of the installation.
IMPORTANT BATTERY SAFETY INSTRUCTIONS
• Wear eye protection (safety glasses) when working with batteries.
• Remove all jewelry such as rings, watches, bracelets, etc., when
installing or performing maintenance on the batteries.
• Never work alone. Always have someone near you when working
around batteries.
• Use proper lifting techniques when working with batteries.
• Never use old or untested batteries. Check each battery’s label
for age, type, and date code to ensure all batteries are identical.
• Batteries are sensitive to changes in temperature. Always install
batteries in a stable environment.
• Install batteries in a well ventilated area. Batteries can produce
explosive gasses. For compartment or enclosure installations,
always vent batteries to the outside.
• Provide at least one inch (2.5 cm) of air space between batteries
to provide optimum cooling.
• Never smoke when in the vicinity of batteries.
• To prevent a spark at the battery and to reduce the chance of
explosion, always connect the cables to the batteries fi rst. Then
connect the cables to the inverter.
• Use insulated tools at all times.
• Always verify proper polarity and voltage before connecting the
batteries to the inverter.
• To reduce the chance of fi re or explosion, do not short-circuit
the batteries.
• In the event of accidental exposure to battery acid, wash thoroughly with soap and water. In the event of exposure to the eyes,
fl ood them for at least 15 minutes with running water and seek
immediate medical attention.
• Recycle old batteries.
SAVE ALL INSTRUCTIONS
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© 2014 Magnum Energy, Inc.
Table of Contents
1.0 Introduction ................................................................1
1.1 MMS Series Models ................................................... 1
1.2 How an Inverter/Charger Works ................................. 2
1.2.1 Inverter Applications for Mobile Installations ................ 2
1.3 Advantages of a Pure Sine vs Modifi ed Sine Inverter ..... 2
1.4 Appliances and Run Time .......................................... 2
1.5 Standard Features and Benefi ts ................................. 3
1.5.1 Battery Temperature Sensor ...................................... 6
2.0 Installation .................................................................7
2.1 Pre-Installation ........................................................ 7
2.1.1 Unpacking and Inspection ......................................... 7
2.1.2 Locating and Mounting the Inverter ...........................10
2.1.3 Wiring Guidelines ....................................................13
2.2 DC Wiring ..............................................................14
2.2.1 DC Wire Sizing ........................................................14
2.2.2 DC Overcurrent Protection ........................................14
2.2.3 DC Grounding .........................................................16
2.2.4 DC Cable Connections ..............................................16
2.3 Battery Bank Wiring ................................................18
2.3.1 Inverter to Battery Bank Wiring ................................18
2.4 AC Wiring ..............................................................20
2.4.1 Neutral to Safety Ground Bonding .............................20
2.4.2 AC Wiring Connections .............................................20
2.4.3 AC Wire Size and Overcurrent Protection ....................21
2.4.4 AC Input Wiring ......................................................22
2.4.5 AC Output Wiring ....................................................24
2.5 Functional Test .......................................................25
3.0 Operation ..................................................................27
3.1 Operating Modes .....................................................27
3.1.1 Inverter Mode .........................................................27
3.1.2 Standby Mode ........................................................28
3.2 Battery Temperature Sensor Operation.......................31
3.3 Protection Circuitry Operation ...................................32
3.4 Inverter Startup ......................................................33
3.5 Factory Default Settings ...........................................34
4.0 Maintenance and Troubleshooting ............................36
4.1 Recommended Inverter and Battery Care ...................36
4.2 RV/Marine Off-Season Storage ..................................36
4.3 Resetting the Inverter ..............................................37
4.4 Troubleshooting ......................................................38
5.0 Specifi cations ............................................................39
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Table of Contents (cont.)
A-1 Optional Equipment and Accessories .........................40
B-1 Battery Information ..................................................41
C-1 Warranty/Service Information ..................................44
C-1.1 Limited Warranty ....................................................44
C-1.2 How to Receive Repair Service ..................................45
List of Figures
Figure 1, MMS1012 Model Inverter/Charger .............................. 3
Figure 2, MMS1012-G Model Inverter/Charger ........................... 3
Figure 3, Top and Left Side Features ........................................ 4
Figure 4, Front and Back Side Features ..................................... 5
Figure 5, Battery Temperature Sensor (BTS) ............................. 6
Figure 6, MMS1012 Model Basic Installation Diagram ................. 8
Figure 7, MMS1012-G Model Basic Installation Diagram .............. 9
Figure 8, Approved MMS1012 (-G) Mounting Orientations .........12
Figure 9, MMS1012 Model Inverter/Charger Dimensions ............12
Figure 10, MMS1012-G Model Inverter/Charger Dimensions .......13
Figure 11, DC Cable to Battery Terminals .................................17
Figure 12, DC Cable to Inverter’s DC Terminals .........................17
Figure 13, AC Wiring Connections (MMS1012 model) .................23
Figure 14, AC Hardwiring Connections (MMS1012-G model) .......23
Figure 15, Warning Label .......................................................25
Figure 16, Automatic 4-Stage Charging Graph ..........................30
Figure 17, BTS Temperature to Charge Voltage Change ..............31
Figure 18, Resetting the Inverter ............................................37
Figure 19, Series Battery Wiring .............................................41
Figure 20, Parallel Battery Wiring ............................................42
Figure 21, Series-Parallel Battery Wiring ..................................42
Figure 22, Battery Bank Wiring Examples (12 volt) ...................43
List of Tables
Table 1, Recommended DC Wire/Overcurrent Device .................15
Table 2, DC Wire Size For Increased Distance ...........................15
Table 3, Wire Color to AC Wire Connection ...............................21
Table 4, Minimum Wire Size to Circuit-breaker Size ...................22
Table 5, Inverter Battery Turn On/Off Levels .............................33
Table 6, Inverter/Charger Default Settings ...............................35
Table 7, Troubleshooting Guide ...............................................38
Table 8, MMS Series Specifi cations ..........................................39
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© 2014 Magnum Energy, Inc.
Introduction
1.0 Introduction
Congratulations on your purchase of an MMS Series inverter/charger
from Magnum Energy, Inc. This product is designed especially for
your mobile application. Powerful, yet simple to use, this product will
provide you with years of trouble-free use.
1.1 MMS Series Models
MMS1012 – a 1000 watt inverter/charger with 20-amp AC transfer
capability and a 50-amp, 4-stage Power Factor Correction (PFC)
charger. The AC input and output are provided with pigtail wires to
allow hardwiring to a main AC distribution panel and to an inverter
sub-panel. Features isolated input/output neutrals for mobile
applications. Includes a 15-foot battery temperature sensor.
Figure 1, MMS1012 Model Inverter/Charger
MMS1012-G – a 1000 watt inverter/charger with 20-amp AC transfer
capability and a 50-amp, 4-stage PFC charger. The AC input is
provided by a standard 3-foot plug-in power cord, and the AC output
is provided by a standard GFCI two plug outlet. Features isolated
input/output neutrals for mobile applications. Includes a 15-foot
battery temperature sensor.
Figure 2, MMS1012-G Model Inverter/Charger
© 2014 Magnum Energy, Inc.
1
Introduction
1.2 How an Inverter/Charger Works
An inverter takes direct current (DC) from your batteries and turns
it into alternating current (AC), like you use at home. With MMS
Series models, it also takes alternating current (when connected to
a generator or to shorepower) and transforms it into direct current
to recharge your batteries.
The two modes of operation associated with this inverter/charger
are referred to in this document as:
Inverter Mode: DC from the batteries is transformed into pure sine
wave AC for powering your mobile applications.
Standby Mode: The unit operates as a battery charger to convert
incoming AC power into DC power to recharge the batteries while
continuing to pass the incoming AC power directly to the inverter’s
output, to power any AC loads.
1.2.1 Inverter Applications for Mobile Installations
Inverters can be used to provide power in mobile situations—RV,
truck, or boat. In these applications, the inverter provides power to
the AC loads using the energy stored in the batteries and recharges
the batteries when shorepower or an onboard generator is available.
1.3 Advantages of a Pure Sine Wave vs Modifi ed Sine
Wave Inverter
Today’s inverters come in two basic output waveforms: modifi ed sine
wave (which is actually a modifi ed square wave) and pure sine wave.
Modifi ed sine wave inverters approximate a pure sine waveform and
will run most appliances and electronics without any problems. These
inverters are less expensive and, therefore, offer a viable alternative
to more expensive pure sine wave inverters.
The output of a pure sine wave inverter is equal to, or in many
cases, better than the shorepower used in your home. Virtually any
electronic device will operate from a pure sine wave inverter. Motors run cooler, microwaves usually cook faster, and clocks keep
better time just to name a few examples. Without compromising
quality or performance, the MagnaSine provides you with all of the
advantages of a pure sine wave inverter at a much lower cost than
many on the market.
1.4 Appliances and Run Time
The MMS Series inverter/charger can power a wide range of household
appliances. As with any appliance using batteries for power, there
is a certain length of time that it can run—this is called “run time”.
Actual run time depends on several variables including the size and
the type of appliance, the type of batteries installed in your application, as well as the battery’s capacity and age. Other factors such
as the battery’s state of charge and temperature can also affect the
length of time your appliances can run.
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© 2014 Magnum Energy, Inc.
Introduction
Depending on your inverter capacity, larger electrical appliances such
as coffee pots and hair dryers can be used for short durations. However, loads that are used for longer periods such as stoves or water
heaters can quickly drain your batteries and are not recommended
for inverter applications.
All electrical appliances are rated by the amount of power they
consume. The rating is printed on the product’s nameplate label,
usually located on its chassis near the AC power cord. Even though
it is diffi cult to calculate exactly how long an inverter will run a par-
ticular appliance, the best advice is trial and error. Your MMS Series
inverter/charger has a built-in safeguard that automatically protects
your batteries from being over-discharged.
1.5 Standard Features and Benefi ts
The MMS Series inverter/charger converts 12 volts of direct cur-
rent (VDC) power from your battery to 120 volts alternating current
(VAC) power.
power using Power Factor Correction (PFC) technology to keep the
inverter’s battery bank fully charged. This inverter is designed to allow
easy installation and use, and with its die-cast aluminum baseplate
it ensures maximum durability and cooler, more effi cient operation.
The multi-stage battery charger optimizes incoming AC
The inverter/charger provides the following:
• 1000 watts continuous at 25°C.
• Numerous protection features to provide a safe and peace-of-
mind operation.
• AC transfer switch circuitry; allowing incoming AC power to
continue to pass-thru to power loads even if the inverter is off.
• Dead battery charging for batteries that are extremely low.
• Automatic 4-stage battery charger with power factor correction
and temperature compensation—for optimum battery charging
(using the temperature sensor).
• Modern and aesthetically pleasing design with a large AC wiring
compartment (provides easy access to AC wiring for simple and
quick connections) and 360° DC connection terminals with color
coded insulating covers.
• True RMS output voltage regulation to ensure the inverter will
deliver the correct amount of power—within the DC input voltage
range and the continuous output power level.
• Quick connection accessory and remote ports—easily accepts sev-
eral optional remote controls and the battery temperature sensor.
© 2014 Magnum Energy, Inc.
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Introduction
1 2
12
5
3
8
6
4
11
10
Figure 3, Top and Left Side Features
1. Inverter Status Indicator – a green LED that illuminates to
provide information on the inverter’s operation.
2. Power Switch – a momentary pushbutton switch that turns the
inverter on or off.
3. Negative DC Terminal (black) – the inverter’s connection to
the negative terminal on the battery bank.
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7
4. Positive DC Terminal (red) – the inverter’s connection to the
positive terminal on the battery bank.
5. Input Circuit Breaker – a circuit breaker that protects the unit’s
internal wiring and pass-thru relay.
6. Output Circuit Breaker – a circuit breaker that provides another
layer of overload protection. Not a branch circuit-rated breaker.
Separate AC output breakers may be required on the output.
7. Mounting Flanges (x4) – secure the inverter to shelf/wall.
8. AC Wiring Compartment - provides access for all AC input and
output connections on the inverter.
9. AC Output Connection – AC knockout for hardwiring AC output.
10. AC Input Connection
input. The strain relief comes with an attached fl exible AC input
power cord on the MMS1012-G model.
11. DC Ground Terminal – a connection that is used to tie the
exposed chassis of the inverter to the DC grounding system. This
terminal accepts CU/AL conductors from #14 AWG (2.1 mm²) to
#6 AWG (13.3 mm²).
12. GFCI Outlet – Ground Fault Circuit Interrupter outlet (with test
and reset capability). Only available on MMS1012-G model.
– a strain relief clamp for hardwiring AC
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© 2014 Magnum Energy, Inc.
Introduction
Front Side
14
13
15
16
Back Side
17
18
Figure 4, Front and Back Side Features
13. Warning and Information Label – provides pertinent
information for safely using the inverter.
14. REMOTE Port Connection – a RJ11 connector that allows an
optional remote control to be connected.
15. ACCESSORY PORT Connection – a RJ11 connector to allow
the Battery Temperature Sensor (BTS) or MMS accessories (e.g.,
MM-DCLD, MM-ISA) to be connected.
16. Intake Vent – ventilation openings to pull in air to keep the
inverter cool for peak performance.
17. Exhaust Vent – ventilation openings that allow heated air to be
removed by the internal cooling fan.
18. Model/Serial Number Label – includes model/serial number
and provides specifi cations and information on the inverter and
charger. See the MMS Series Specifi cations on page 39 for more
information and the different models available.
© 2014 Magnum Energy, Inc.
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FRONT VIEW
SIDE VIEW
~2" (5.1 cm)
~1"
~½”
0.375" diameter
Cable
~¾”
(2.5 cm)
(.95 cm)
(1.9 cm)
(1.3 cm)
Introduction
1.5.1 Battery Temperature Sensor
A plug-in external Battery Temperature Sensor (BTS) is provided
for units with the battery charger feature. When installed, the BTS
automatically adjusts the battery charger’s BULK, ABSORB, and
FLOAT voltage set-points (based on temperature) for better charging performance and longer battery life. If the temperature sensor is
NOT installed and the batteries are subjected to large temperature
changes, battery life may be shortened.
Figure 5, Battery Temperature Sensor (BTS)
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© 2014 Magnum Energy, Inc.
Installation
2.0 Installation
2.1 Pre-Installation
Before installing the inverter, read the entire Installation section. The
more thorough you plan in the beginning, the better your inverter
needs will be met.
WARNING: Installations should be performed by qualifi ed
personnel, such as a licensed or certifi ed electrician. It
is the installer’s responsibility to determine which safety
codes apply and to ensure that all applicable installation
requirements are followed. Applicable installation codes
vary depending on the specifi c location and the type of
installation.
Info: Review the Important Product Safety Information
on page ii and the Important Battery Safety Instructions
on page iii before any installation.
The basic system diagrams shown in Figures 6 and 7
reviewed to assist you in planning and designing your installation.
2.1.1 Unpacking and Inspection
Carefully remove the MMS inverter/charger from its shipping container
and inspect all contents. Verify the following items are included:
• MMS Series inverter/charger
• Red and black DC terminal covers
• AC access cover with two screws
• Two 5/16-18 hex-head kep nuts (installed on the DC terminals)
• Battery Temperature Sensor (BTS)
• MMS Series Owner’s Manual
• Warning Label
If items appear to be missing or damaged, contact your authorized
Magnum Energy dealer or Magnum Energy.
If at all possible, keep your shipping box. It will help protect your
inverter from damage if it ever needs to be returned for service.
Save your proof-of-purchase as a record of your ownership; it will
also be needed if the unit should require in-warranty service.
should be
Record the unit’s model and serial number in the front of this manual
in case you need to provide this information in the future. It is much
easier to record this information now, instead of trying to gather it
after the unit has been installed.
© 2014 Magnum Energy, Inc.
7
Installation
AC
Main Panel
Sub-Panel
(optional)
AC
AC IN
AC
OUT
DC
Ground
DC
disconnect
and
overcurrent
device
AC
Outlet
Battery
Bank
TV
VCR
Tools
AC Loads
Figure 6, MMS1012 Model Basic Installation Diagram
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© 2014 Magnum Energy, Inc.
Installation
AC IN
AC Loads
TV
VCR
Tools
AC
OUT
DC
Ground
DC
disconnect
and
overcurrent
device
Battery
Bank
Figure 7, MMS1012-G Model Basic Installation Diagram
© 2014 Magnum Energy, Inc.
9
Installation
2.1.2 Locating and Mounting the Inverter
WARNINGS:
• Do not mount the inverter near any fl ammable or
combustible fl uid or components.
• Provide adequate clearance/ventilation to the inverter.
• Mount only on a non-combustible surface.
• Maximum ambient temperature around the inverter
must not exceed 77°F (25°C) to meet power specifi -
cations.
The inverter should only be installed in a location that meets the
following requirements:
Clean and Dry – The inverter should not be installed in an area that
allows
ventilation openings. The area also must be free from any risk of
condensation, water,
inverter. The inverter uses stainless steel fasteners, plated copper
busbars, and a power-coated aluminum base. Also, the internal circuit
boards are conformal coated. The above measures are undertaken to
help fi ght the harmful effects of corrosive environments. However,
the life of the inverter is uncertain if used in any of these types of
environments, and inverter failure under these conditions is not
covered under warranty.
dust, fumes, insects, or rodents to enter or block the inverter’s
or any other liquid that can enter or fall on the
Cool – The inverter should be
sun or any equipment that produces extreme heat.
protected from direct exposure to the
The ambient air
temperature should be between 32°F (0°C) and 104°F (40°C); keep
in mind that the inverter’s output specifi cations are rated at 77°F
(25°C), so the cooler the better within this range.
Ventilated – In order for the inverter to provide full output power
and avoid over-temperature fault conditions, do not cover or block
the inverter’s ventilation openings or install this inverter in an area
with limited airfl ow. Allow as much clearance around the inverter’s
intake and exhaust ventilation openings as possible (see Figure 4,
Items 16 & 17). At the minimum, allow an airspace clearance of
3” (7.5 cm) on all sides to provide adequate ventilation.
If installed in an enclosure, a fresh air intake opening must be provided directly to the front side (intake vent) and an exhaust opening on the back side (exhaust vent) of the inverter. This will allow
cool air from the outside to fl ow into the inverter, and heated air to
exit away from the inverter and the enclosure. When mounted in an
enclosed compartment, airfl ow must be at least 59 cfm in order to
maintain no more than a 68°F (20°C) rise in compartment temperature. Minimum clearances can be reduced if airfl ow is increased, but
in no case should clearance around the inverter be less than 2” (5
cm) on all sides.
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© 2014 Magnum Energy, Inc.
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