Global LF Series Pure Sine Wave Inverter/ Charger
AIMS Power
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Global LF Series
Pure Sine Wave Inverter/
Charger
User’s Manual
For PICOGLF6W12V120VR
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Table of Contents
1.1 General Safety Precautions .................................................................................................................................................3
1.2 Precautions When Working with Batteries ....................................................................................................................3
2.1 General Information ..............................................................................................................................................................4
2.2 Application...............................................................................................................................................................................4
2.3 Mechanical Drawing .............................................................................................................................................................5
2.4 Features .....................................................................................................................................................................................6
2.5 Electrical Performance .........................................................................................................................................................6
2.5.1 Invert ......................................................................................................................................................................................6
2.5.2 AC Charger ..........................................................................................................................................................................7
2.5.3 Transfer .................................................................................................................................................................................9
2.5.4 Automatic Voltage Regulation .......................................................................................................................................9
2.5.5 Power Saver ...................................................................................................................................................................... 10
2.5.6 Protections ......................................................................................................................................................................... 12
2.5.7 Remote Control ................................................................................................................................................................ 12
2.5.8 LED Indicator ................................................................................................................................................................... 13
2.5.9 Audible Alarm .................................................................................................................................................................. 13
2.5.10 FAN Operation .............................................................................................................................................................. 14
2.5.11 DIP Switches .................................................................................................................................................................. 14
2.5.12 Battery Temperature Sensing .................................................................................................................................... 16
2.5.13 Auto Generator Start .................................................................................................................................................... 16
2.5.14 Other Features ................................................................................................................................................................ 17
3. Installation ............................................................................................................................................................................. 18
3.1 Location ................................................................................................................................................................................. 18
3.2 DC Wiring ............................................................................................................................................................................. 18
3.3 AC Wiring ............................................................................................................................................................................. 18
3.4 Grounding ............................................................................................................................................................................. 19
3.5 Install Flange ........................................................................................................................................................................ 19
4. Troubleshooting Guide ...................................................................................................................................................... 21
5 Warranty .................................................................................................................................................................................. 23
Appendix 1 .................................................................................................................................................................................. 24
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1. Important Safety Information
WARNING! Before using the Inverter, you need to read and save the safety instructions.
1.1 General Safety Precautions
1-1-1.Do not expose the Inverter to rain, snow, spray, bilge or dust. To reduce risk of hazard, do not cover
or obstruct the ventilation openings. Do not install the Inverter in a zero-clearance compartment, as
overheating may result. Allow at least 30CM of clearance around the inverter for air flow. Make sure that
the air can circulate freely around the unit. A minimum air flow of 145CFM is required.
1-1-2. To avoid risk of fire and electronic shock, make sure that existing wiring is in good electrical
condition and that the wire is not undersized. Do not operate the Inverter with damaged or substandard
wiring.
1-1-3. This equipment contains components which may produce arcs and/or sparks. To prevent fire and/or
explosion do not install in compartments containing batteries or flammable materials or in a location which
require ignition protected equipment. This includes any space containing gasoline-powered machinery,
fuel tanks, or joints, fittings, or other connection between components of the fuel system.
See Warranty for instructions on obtaining service.
1-1-4. Do not disassemble the Inverter/Charger. It contains no user-serviceable parts. Attempting to
service the Inverter/Charger yourself may result in electrical shock or fire. Internal capacitors remain
charged after all power is disconnected.
1-1-5. To reduce the risk of electrical shock, disconnect both AC and DC power from the Inverter/Charger
before attempting any maintenance or cleaning. Turning off controls will not reduce this risk
CAUTION: Equipment damage
The output side of the inverters' AC wiring should at no time be connected to public power or a
generator. This condition is far worse than a short circuit. If the unit survives this condition, it will shut
down until corrections are made.
Installation should ensure that the inverters' AC output is, at no time, connected to its AC input.
Warning: Limitations On Use
SPECIFICALLY NOTE THAT THE GLOBAL LF INVERTER/CHARGER SHOULD NOT BE USED IN
CONNECTION WITH LIFE SUPPORT SYSTEMS OR OTHER MEDICAL EQUIPMENT OR DEVICES.
1.2 Precautions When Working with Batteries
1-2-1. If battery acid contacts skin or clothing, wash immediately with soap and water. If acid enters
eye, immediately rinse eye with running cold water and get medical attention immediately.
1-2-2. Never smoke or allow a spark or flame in the vicinity of a battery or engine.
1-2-3. Do not drop a metal tool on the battery. The resulting spark or short-circuit on the battery may
cause an explosion.
1-2-4. Remove personal metal items such as rings, bracelets, necklaces, and watches when working with a
lead-acid battery. A lead-acid battery produces a short-circuit current high enough to weld a ring or the
like to metal, causing a severe burn.
1-2-5. To reduce the risk of injury, charge only deep-cycle lead acid, lead antimony, lead calcium gel
cell, absorbed mat, or NiCad/NiFe type rechargeable batteries. Other types of batteries may burst,
causing personal injury and damage.
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2. Introduction
2.1 General Information
Global LF Series Pure Sine Wave Inverter is a combination of an inverter, battery charger and AC autotransfer switch into one complete system with a peak conversion efficiency of 80% for 600W and 1KW
models.
It is packed with unique features and it is one of the most advanced inverter/chargers in the market
today. It features power factor corrected, sophisticated multi-stage charging and pure sine wave output
with unprecedentedly high surge capability to meet demanding power needs of inductive loads without
endangering the equipment.
For the regular model, when utility AC power cuts off (or falls out of acceptable range), the transfer relay is
de-energized and the load is automatically transferred to the Inverter output. Once the qualified AC utility
is restored, the relay is energized and the load is automatically reconnected to AC utility.
The Global LF Series Inverter is equipped with a powerful charger.
The overload capacity is 300% of continuous output for up to 20 seconds to reliably support tools and
equipment longer
The AC/Battery priority and auto generator start functionality make it suitable to work in either backup power or
renewable energy applications. When customized to Battery priority mode via a DIP switch, the inverter will
extract maximum power from external power sources and renewable energy systems, with only minimal battery
cycles being required. With the availability of auto generator start, an electrical generator can be integrated into
the system and started when the battery voltage goes low.
Thus, the Global LF Series Pure Sine Wave Inverter is suitable for Renewable energy systems, Utility,
RV, Marine and Emergency appliances.
To get the most out of the power inverter, it must be installed, maintained and used properly. Please read
the instructions in this manual before installing and operating.
2.2 Application
Power tools–circular saws, drills, grinders, sanders, buffers, weed and hedge trimmers, air
compressors. Office equipment – computers, printers, monitors, facsimile machines, scanners.
Household items – vacuum cleaners, fans, fluorescent and incandescent lights, shavers, sewing machines.
Kitchen appliances – coffee makers, blenders, ice markers, toasters.
Industrial equipment – metal halide lamp, high – pressure sodium lamp.
Home entertainment electronics – television, VCRs, video games, stereos, musical instruments,
satellite equipment.
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2.3 Mechanical Drawing
PICOGLF6W12V120VR
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2.4 Features
High overload ability up to 300% of rated power (20 sec)
Low quiescent current, low power “Power Saving Mode” to conserve
energy Automatic Generator Start
Battery Temperature Sensing for more precise charging
4-step intelligent battery charger, PFC (Power Factor Correction) for charger 8
pre-set battery type selector switch plus de-sulphation for totally flat batteries
Powerful charge rate of up to 20 Amps, selectable from 25%-100%
10 ms typical transfer time between battery and AC, guarantees power continuity
Smart remote control
15s delay before transfer when AC resumes, extra protection for loads when used with
generator Allows start up and through power with depleted batteries
Multiple controlled cooling fans
Extensive protections against various harsh situations
13VDC battery recovery point, dedicated for renewable energy systems
2.5 Electrical Performance
2.5.1 Invert
Topology
The Global LF inverter/charger is built according to the following
topology. Invert: Full Bridge Topology.
Charge: Isolated Boost Topology
High efficiency Mosfets and 16bit, 4.9MHZ microprocessor and heavy duty transformers outputs PURE
SINE WAVE AC with an average THD of 15% (min 5%, max 25%) depending of load connected and the
battery voltage.
The peak efficiency of the Global LF series is 80%
Overload Capacity
The Global LF series inverters have high overload capacities, making it ideal to handle demanding loads.
1 For 110%<Load<125%(±10%), no audible alarm for 14 minutes, beeps 0.5s every 1s in the 15th
minute, and Fault(Turn off) after the 15th minute.
2 For 125%<Load<150%(±10%), beeps 0.5s every 1s and Fault(Turn off) after 1 minute. 3
For 300%≧Load>150%(±10%), beeps 0.5s every 1s and Fault(Turn off) after 20s.
Caution:
After the inverter is switched on, it takes a finite time for it to self diagnose and get ready to deliver full
power. Hence, always switch on the load(s) after a few seconds of switching on the inverter. Avoid
switching on the inverter with the load already switched on. This may prematurely trigger the overload
protection. When a load is switched on, it may require initial higher power surge to start. Hence, if multiple
loads are being powered, they should be switched on one by one so that the inverter is not overloaded by the
higher starting surge if all the loads are switched on at once.
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2.5.2 AC Charger
Global LF Series is equipped with an active PFC (Power Factor Corrected) multistage battery charger.
The PFC feature is used to control the amount of power used to charge the batteries in order to obtain a
power factor as close as possible to 1.
Unlike other inverters whose max charging current decreases according to the input AC voltage, Global
LF series charger is able to output max current as long as the input AC voltage is in the range of 95127VAC for 120V model, and AC frequency is in the range of 48-54Hz(58-64Hz for 60Hz model).
The Global LF series inverter has a very rapid charge current available, and the max charge current can be
adjusted from 25%-100% via a linear switch to the right of the battery type selector. This will be helpful if
you are using our powerful charger on a small capacity battery bank. Fortunately, the linear switch can
effectively reduce the max charging current to 25% of its peak.
Choosing “0” in the battery type selector will disable the charging function.
Caution:
Please turn the charge current control switch gently to avoid breakage due to over-turning.
There are 3 charging stages:
Bulk Charging: This is the initial stage of charging. While Bulk Charging, the charger supplies the battery
with controlled constant current. The charger will remain in Bulk charge until the Absorption charge
voltage (determined by the Battery Type selection) is achieved.
A software timer will measure the time from A/C start until the battery charger reaches 0.3V below the
boost voltage, then take this time asT0 and T0×10 = T1.
Absorb Charging: This is the second charging stage (Fast charge light blinks) and begins after the absorb
voltage has been reached. Absorb Charging provides the batteries with a constant voltage and reduces the
DC charging current in order to maintain the absorb voltage setting.
In this period, the inverter will start a T1 timer; the charger will keep the boost voltage in Boost CV
mode until the T1 timer has run out. Then drop the voltage down to the float voltage. The timer has a
minimum time of 1 hour and a maximum time of 12 hours.
Float Charging: The third charging stage occurs at the end of the Absorb Charging time. While Float
charging, the charge voltage is reduced to the float charge voltage (determined by the Battery Type
selection*). In this stage, the batteries are kept fully charged and ready if needed by the inverter.
If the A/C is reconnected or the battery voltage drops below 12Vdc/24Vdc, the charger will restart the
above cycle.
If the charge maintains the float state for 10 days, the charger will deliberately reset the cycle to protect
the battery.
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Battery type selector
Switch setting
0
1
2
3
4
5
6
7
8
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Description
Charger Off
Gel USA
AGM 1
AGM 2
Sealed lead acid
Gel EURO
Open lead acid
Calcium
De-sulphation
Not used
Boost / Vdc
Float / Vdc
14.0
14.1
14.6
14.4
14.4
14.8
15.1
15.5 (4 Hours then Off)
13.7
13.4
13.7
13.6
13.8
13.3
13.6
De-sulphation
The de-sulphation cycle, switch position 8, is marked in red because this is a very dangerous setting if you
do not know what you are doing. Before attempting to use this cycle you must clearly understand what it
does, when and how to use it.
What causes sulphation? This can occur with infrequent use of the batteries, or if the batteries have been
discharged so low that they will not accept a charge. This cycle is a very high voltage charge cycle designed
to try to break down the sulphated crust that is preventing the plates from taking a charge and thus allow the
plates to clean up and accept a charge once again.
Charging depleted batteries
The Global LF series inverter allows start up and through power with depleted batteries.
For 12VDC models: after the battery voltage goes below 10V and the power switch is kept in the "ON"
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position and the inverter stays connected to the battery and the battery voltage doesn’t drop below 2V,
the inverter will be able to charge the battery once qualified AC inputs are present.
Before the battery voltage goes below 9VDC, the charging can be activated when the switch is turned
to “Off”, then to “ON”.
When the voltage goes below 9VDC, and you accidentally turn the switch to OFF or disconnect the
inverter from the battery, the inverter will not be able to charge the battery once again, because the CPU
loses memory during this process.
Charging current for each model
Model
PICOGLF6W12V120V
Current
20+/-5A
Model
PICOGLF6W12V120VR
Current
20+/-5A
The charging capacity will go to peak charge rate in about 3 seconds. This may cause a generator to drop
frequency, making the inverter transfer to battery mode.
It is suggested to gradually put the charging load on the generator by switching the charging switch
from min to max. Together with the 15s switch delay our inverter gives the generator enough time to
spin up. This will depend on the size of the generator and rate of charge.
2.5.3 Transfer
While in the Standby Mode, the AC input is continually monitored. Whenever AC power falls below the
VAC Trip voltage 90VAC for 120VAC, the inverter automatically transfers back to the Invert Mode with
minimum interruption to your appliances - as long as the inverter is turned on. The transfer from Standby
mode to Inverter mode occurs in approximately 10 milliseconds. And it is the same time from Inverter
mode to Standby mode.
Though it is not designed as a computer UPS system, this transfer time is usually fast enough to keep
your equipment powered up.
There is a 15-second delay from the time the inverter senses that continuously qualified AC is present at the
input terminals to when the transfer is made. This delay is built in to provide time for a generator to spin-up
to a stable voltage and avoid relay chattering. The inverter will not transfer to generator until it has locked
onto the generator’s output. This delay is also designed to avoid frequent switching when input utility is
unstable.
2.5.4 Automatic Voltage Regulation
The automatic voltage regulation function is available for Global LF series Pure Sine Wave
Inverter/ Chargers whose model numbers end with a “R”, for example, PICOGLF6W12V120VR.
Instead of simply bypassing the input AC to power the loads, the Global LF series inverter stabilizes
the input AC voltage to a range of 120V±10%.
Connected with batteries, the Global LF inverter will function as a UPS with max transfer time of 10 ms.
With all the unique features and top quality minded design our inverter provides, it will provide you
with long-term trouble free operation.
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Global LF voltage regulation function introduction
AVR Function
Acceptable Input Voltage Range (Vac)
Nominal Input Voltages (Vac)
(A) Line low loss N/W (On battery)
0-160
100
110
120
75/65
84/72
92/78
80/70
89/77
97/83
(C) Line 2nd boost threshold (On Boost)
(D) Line 2nd boost comeback (On normal)
**
**
**
**
**
**
(E) Line 1st boost threshold (On Boost)
90
99
108
(F) Line 1st boost comeback (On normal)
93
103
112
(G) Line buck comeback (On Normal)
106
118
128
(H) Line buck threshold (On Buck)
110
121
132
(I) Line high comeback (On Buck)
115
127
139
(J) Line high loss (On Battery)
120
132
144
(B) Line Low comeback N/W (On Boost)
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2.5.5 Power Saver
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There are 2 different working statuses for our Global LF
inverter: “Power On” and “Power Off”.
When the power switch is in “Unit Off” position, the inverter
is powered off.
When the power switch is turned to either of “Power Saver
Auto” or “Power Saver Off”, the inverter is powered on.
Power saver function is designed to conserve battery power when
AC power is not or rarely required by the loads.
In this mode, the inverter pulses the AC output looking for an AC
load (i.e. electrical appliance). Whenever an AC load (greater than 50 watts) is turned on, the inverter
recognizes the need for power and automatically starts inverting and output goes to full voltage. When there
is no load (or less than 50 watts) detected, the inverter automatically goes back into search mode to
minimize energy consumption from the battery bank.
In “Power saver on” mode, the inverter will draw power mainly in sensing moments, thus the
idle consumption is significantly reduced.
The inverter is factory defaulted to detect a load for 250ms every 3 seconds with DIP switch 3 to position
1. This can be turned off when in position 0.
Power saver on
Power saver off
Power saver on(Load detected)
Note: The minimum power of a load to take inverter out of sleep mode (Power Saver On) is 50 Watts.
The Global LF Series is designed with extraordinarily low idle power consumption which is only a mere 2-3
% of its rated power.
When in the search sense mode, the green power LED will blink and the inverter will make a ticking sound.
At full output voltage, the green power LED will light steadily and the inverter will make a steady humming
sound. When the inverter is used as an “uninterruptible” power supply the search sense mode or “Power
Saver On” function should be defeated.
Exceptions
Some devices when scanned by the load sensor cannot be detected. Small fluorescent lights are the most
common example. (Try altering the plug polarity by turning the plug over.) Some computers and
sophisticated electronics have power supplies that do not present a load until line voltage is available. When
this occurs, each unit waits for the other to begin. To drive these loads either a small companion load must
be used to bring the inverter out of its search mode, or the inverter may be programmed to remain at full
output voltage (Power On mode).
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2.5.6 Protections
The Global LF series inverter is equipped with extensive protections against various harsh
situations/faults. These protections include:
AC Input over voltage protection/AC Input low voltage
protection Low battery alarm/High battery alarm
Over temperature protection/Over load protection
Short Circuit protection (1s after fault)
Back feeding protection
When Over temperature /Over load occur, after the fault is cleared, the master switch has to be reset
to restart the inverter.
The Low battery voltage trip point can be customized from a defaulted value of 10VDC to 10.5VDC thru
SW1 on the DIP switch.
The inverter will go to over temp protection when the heat sink temp. ≥ 221℉, and go to Fault
(shutdown Output) after 30 seconds. The switch has to be reset to activate the inverter.
The Global LF series Inverter has back feeding protection which avoids presenting an AC voltage on the
AC input terminal in Invert mode.
After the reason for the fault is cleared, the inverter has to be reset to start working.
2.5.7 Remote Control
LCD Switch Panel Apart
from the switch panel on the front (or top) of the inverter, an extra LED or LCD switch panel
connected to the remote port at the DC side of the inverter thru a standard telephone cable can also control
the operation of the inverter (sold separately Part # REMOTELF).
If an extra switch panel is connected to the inverter via “remote control port”, together with the panel on the
inverter case, the two panels will be connected and operated in parallel.
Whichever first switches from “Off” to “Power saver off” or “Power saver on”, it will power the
inverter on.
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If the commands from the two panels conflict, the inverter will operate according to the following
priority: Power saver on> Power saver off> Power off
Only when both panels are turned to the “Unit Off” position, will the inverter be powered
off. The Max length of the cable is 10 meters.
WARNING
Never cut the telephone cable when the cable is attached to inverter and battery is connected to the
inverter. Even if the inverter is turned off, it will damage the remote PCB inside if the cable is short
circuited during cutting.
2.5.8 LED Indicator
SHORE POWER ON
INVERTER ON
FAST CHARGE
FLOAT CHARGE
OVER TEMP TRIP
OVER LOAD TRIP
POWER SAVER ON
GREEN LED lit in AC Mode
GREEN LED lit in Inverter Mode
Yellow LED lit in Fast Charging Mode
GREEN LED lit in Float Charging Mode
RED LED lit in Over Temperature
RED LED lit in Over Load
GREEN LED lit in Power Saver Mode (Power Saver
Load ≦50W)
2.5.9 Audible Alarm
Battery Voltage Low
Battery Voltage High
Invert Mode Over-Load
Over Temperature
Inverter green LED lit, and the buzzer beeps 0.5s every 5s.
Inverter green LED lit, and the buzzer beeps 0.5s every 1s and Fault
after 60s.
(1)110%<load<125%(±10%), No audible alarm in 14 minutes,
Beeps 0.5s every 1s in 15th minute and Fault after 15 minutes;
(2)125% <load<150%(±10%), Beeps 0.5s every 1s and Fault after 60s;
(3)Load>150%(±10%), Beeps 0.5s every 1s and Fault after 20s;
Heat sink temp. ≥ 221℉, Over temp red LED Lighting, beeps
0.5s every 1s;
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2.5.10 FAN Operation
There is one multiple controlled DC fan which starts to work according to the below logic.
The Operation of the DC fan at the DC terminal side is controlled by the following logic:
Condition
HEAT SINK
TEMPERATURE
Enter Condition
Leave condition
Speed
T ≤ 60140℉
T > 149℉
OFF
149℉≤ T < 185℉
T ≤ 140℉ or T ≥ 185℉
50%
T > 185℉
T ≤ 176℉
100%
I ≤ 15%
I ≥ 20%
OFF
CHARGER
20%< I ≤ 50%Max
I≤ 15% or I > 50%Max
50%
CURRENT
I > 50%Max
I ≤ 40%Max
100%
Load < 30%
Load ≥ 30%
OFF
LOAD
30% ≤ Load < 50%
Load ≤ 20% or Load ≥ 50%
50%
Percentage
Load ≥ 50%
Load ≤ 40%
100%
(INV MODE)
Allow at least 30CM of clearance around the inverter for air flow. Make sure that the air can circulate
freely around the unit.
Fan noise level <60db at a distance of 1m
2.5.11 DIP Switches
On the DC end of inverter, there are 5 DIP switches which enable users to customize the performance of
the device.
Switch NO
SW1(Utility Priority)
SW1(Battery Priority)
SW2
SW3
SW4
SW5
Switch Function
Low Battery Trip Point
AC Input Range
Power Save Override
ON/OFF
Frequency Switch
Battery/AC Priority
Position: 0
10.0VDC
Position: 1
10.5VDC
10.5VDC
100-135VAC
Inverter Off
11.5VDC
90-135VAC(40-70Hz)
Saver On 3 sec
50Hz
AC Priority
60Hz
Battery Priority
Low Battery Trip Point(SW1):
Deep discharge of the lead acid battery leads to high losses in capacity and early aging. In different
applications a different low voltage disconnection level is preferred. For example, for solar applications, user
may intend to have less DOD to prolong the battery life cycle. While for mobile applications users may
intend to have more DOD to reduce battery capacity and on board weight.
For 12VDC models, when the inverter is in utility priority mode (SW5 at “0”), Low Battery Trip Point is
selectable at 10.0/10.5VDC. It can be customized to 10.5/11.5VDC via SW5. This is to prevent batteries
from over-discharging while there is only a small load applied on the inverter.
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AC Input Range(SW2):
There are different acceptable AC input ranges for different kinds of loads.
For some relatively sensitive electronic devices, a narrow input range of 100-135V is required to protect
them.
While for some resistive loads which work in a wide voltage range, the input AC range can be customized to
90-135V for 120VAC , this helps to power loads with the most AC input power without frequent switches to
the battery bank.
In order to make the inverter accept dirty power from a generator, when the SW2 is switched to position
“1”, the inverter will bypass an AC input with a wider voltage and frequency (40-70Hz for 50Hz/60Hz).
Accordingly, the AC charger will also work in a wider voltage and freq range (42-68Hz for 50Hz/60Hz).
This will avoid frequent switches between battery and generator. But some sensitive loads will suffer from
the low quality power.
The pros and cons should be clearly realized.
Power Save Override ON/OFF (SW3):
Under the Battery Priority Mode (SW5 in position “1”), the inverter can be switched between two modes:
Power Saver Mode (SW3 in position “1”) and Unit Off Charging Mode (SW3 in position “0”). The
power Switch should be in “Power saver on” position all the time for using these functions.
In Power Saver Mode, the inverter is initially in standby mode and sends a pulse to detect the presence of a
load every 3 seconds. Each pulse lasts for 250ms. The inverter will remain in standby mode until a load
has been detected. Then it will wake up from standby mode and start to invert electricity from the battery
bank to supply the load. As this function is under Battery Priority, the inverter will always prefer to invert
electricity from battery first even there is a qualified AC input present. Only when the battery voltage is
lower than the low voltage alarm point, will the inverter switch to AC input power to charge the battery
and supply the load at the same time.
This Power Saver Mode can be changed to Unit Off Charging mode via SW3 by switching it to “0”
position. (SW5 still in “1”)
In Unit Off Charging mode, the inverter will stay in standby mode without sensing loads. It will not output
any power even if a load is turned on or a qualified AC input is present. The inverter will not perform any
function and only stay idle in this mode, unless the battery voltage is low. Then it will start charging the
battery. This feature is ideally suitable for applications where energy conservation is required. Charging
will only be activated when required.
Frequency Switch(SW4):
The output frequency of the inverter can be set at either 50Hz or 60Hz by SW4.
AC/Battery Priority(SW5):
Our inverter is designed with AC priority by default. This means, when AC input is present, the battery
will be charged first, and the inverter will transfer the input AC to power the load. Only when the AC input
is stable for a continuous period of 15 days will the inverter start a battery inverting cycle to protect the
battery. After 1 normal charging cycle ac through put will be restored.
The AC Priority and Battery Priority switch is SW5. When you choose battery priority, the inverter will
invert from battery despite the AC input. Only when the battery voltage reaches the low voltage alarm
point10.5Vdc for 12V DC will the inverter transfer to AC Input, charge battery, and switch back to battery
when the battery is fully charged. This function is mainly for wind/solar systems using utility power as back
up.
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Note: In battery priority mode, when qualified AC inputs for the first time and the battery voltage is
below 12.5V DC, the inverter will go into battery priority mode only after a cycle of bulk charging
and absorb charging is finished. The inverter will not go into float charging mode.
2.5.12 Battery Temperature Sensing
Applying the proper charge voltage is critical for achieving optimum battery performance and longevity.
The ideal charge voltage required by batteries changes with battery temperature.
The battery temperature sensor allows the charge controller to continuously adjust charge voltage based
on actual battery temperature.
Temperature compensation of charge voltage assures that the battery receives the proper charge voltage
as battery temperature varies.
The entire line of Global LF are equipped with Battery Temperature Sensing for increased
charging precision.
It sends precise information to the charger, which automatically adjusts voltage to help ensure full
battery charge depending on the ambient temperature of your battery installation.
When the battery voltage is over 40℃(104℉), it will reduce the charging voltage by 0.1Vdc with
every degree of temperature rise.
Aims recommends that you install Battery Temperature Sensors on all banks to protect your batteries and
to provide optimal charging of each bank.
The battery temperature sensor mounts on the side of a battery.
The spec is listed below
Inverter Condition
Charger Mode
Temp on BST
BTS ≥ 50℃(122℉)
BTS ≤ 40℃(104℉)
Inverter Mode
40℃(104℉) ≤ BTS ≤ 50℃(122℉)
BTS ≥ 50℃(122℉)
Operation
Automatically turns off charger
Automatically turns on charger
Increases the low voltage shut down
point by 0.5Vdc
Over Temp Fault
2.5.13 Auto Generator Start
The inverter can start up a generator when the battery voltage goes low.
When the inverter goes to low battery alarm, it can send a signal to start a generator and turn the
generator off after battery charging is finished.
The auto gen start feature will only work with generators designed to work with this feature. There is
an open/close relay that will short circuit the positive and negative cable from a generator. The input
DC voltage can vary, but the Max current the relay can carry is 16Amp.
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2.5.14 Other Features
Battery voltage recovery start
After low battery voltage shut off (10V for 12V model), the inverter is able to restore operation after the
battery voltage recovers to 13V (with power switch still in the “On” position). This function helps to save the
users extra labor to reactivate the inverter when the low battery voltage returns to an acceptable range in
renewable energy systems. The built in battery charger will automatically reactivate as soon as city/generator
ac has been stable for 15 seconds.
WARNING
Never leave the loads unattended, some loads (like a heater) may cause accidents in such cases.
It is better to shut everything off after low voltage trip than to leave your load on, due to the risk of fire.
Conformal Coating
AIMS Power entire line of Global LF inverters have been processed with a conformal coating on the PCB,
making it water, rust, dust and corrosion resistant.
While these units are designed to withstand corrosion from the salty air, they are not splash proof.
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3. Installation
3.1 Location
Follow all the local regulations to install the inverter.
Please install the equipment in a location of Dry, Clean, Cool with good
ventilation. Working temperature: ‐10℃‐ 40℃(-14℉to 104℉)
Storage temperature: ‐40‐70℃(-40℉to 158℉)
Relative Humidity: 0% to 95%,non-condensing
Cooling: Forced air
3.2 DC Wiring
It is suggested the battery bank be kept as close as possible to the inverter. The following is a
suggested wiring option for 3 meter DC cable.
Please find the following minimum wire size. In case of DC cable longer than 3m, please increase the cross section
of cable to reduce the loss.
Output Power
600W
1KW
1.5KW
DC Input voltage
12V
12V
12V
Wire Gage
AWG 4
AWG 1/0
AWG 2/0
CAUTION
The torque rating range for DC terminal is 12.5NM-20.5NM, and the suggested torque rating is 17NM.
Over torquing may cause the bolt to break.
WARNING
In the event of reverse polarity the unit could be totally destroyed and warranty voided!
3.3 AC Wiring
The AC wiring of the 600W and 1KW inverters is easy. Just plug the AC input cable to the shore power and
connect loads to the GFCI output.
WARNING
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The output voltage of this unit must never be connected in its input AC terminal, overload or damage
may result.
Always switch on the inverter before plugging in any appliance.
3.4 Grounding
Connect an AWG 8 gauge or greater copper wire between the grounding terminal on the inverter and
the earth grounding system or the vehicle chassis.
3.5 Install Flange
600W Model
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Side View
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4. Troubleshooting Guide
Troubleshooting contains information about how to troubleshoot possible error conditions while using
the Global LF Inverter & Charger.
The following chart is designed to help you quickly pinpoint the most common inverter failures.
Indicator and Buzzer
Indicator on top cover
LED on Remote Switch
SHORE
INVERTER
FAST
FLOAT
OVER TEMP
OVER LOAD
POWER SAVER
BATT
POWER ON
ON
CHG
CHG
TRIP
TRIP
ON
CHG
CC
√
×
√
×
×
×
×
Line
CV
√
×
√, blink
×
×
×
Mode
Float
√
×
×
√
×
Standby
√
×
×
×
Inverter
Inverter On
×
√
×
Mode
Power Saver
×
×
Battery Low
×
Battery High
Status
INVERTER
Alarm
√
×
×
×
×
√
×
×
×
×
×
√
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
√
×
×
×
×
×
×
√
×
×
×
×
√
×
×
×
×
×
×
√
√
Beep 0.5s every 5s
×
√
×
×
×
×
×
×
√
√
Beep 0.5s every 1s
×
√
×
×
×
√
×
×
√
√
Item
Buzzer
Refer to “Audible
Overload On
alarm”
Invert Mode
Inverter
Over-Temp On
×
√
×
×
√
×
×
×
√
√
Beep 0.5s every 1s
√
×
√
×
√
×
×
√
×
√
Beep 0.5s every 1s
Over Charge
√
×
√
×
×
×
×
√
×
√
Beep 0.5s every 1s
Fan Lock
×
×
×
×
×
×
×
×
×
×
Beep continuous
Battery High
×
√
×
×
×
×
×
×
√
×
Beep continuous
×
×
×
×
×
√
×
×
×
×
Beep continuous
Output Short
×
×
×
×
×
√
×
×
×
√
Beep continuous
Over-Temp
×
×
×
×
√
×
×
×
×
×
Beep continuous
Over Charge
×
×
√
×
×
×
×
√
×
×
Beep continuous
×
×
×
×
×
×
×
×
×
×
Beep continuous
Mode
Invert Mode
Over-Temp On
Line Mode
Inverter Mode
Overload
Fault
Mode
Back Feed
Short
Symptom
Inverter will not turn on during
initial power up.
Possible Cause
Batteries are not connected, loose
battery-side connections.
Recommended Solution
Check the batteries and cable
connections. Check DC fuse
and breaker.
Low battery voltage.
No AC output voltage and no
indicator lights ON.
AC output voltage is low and the
inverter turns loads OFF in a
short time.
Inverter has been manually
transitioned to OFF mode.
Low battery.
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Charge the battery.
Press the switch to Power saver
on or Power saver off position.
Check the condition of the
batteries and recharge if
possible.
AIMS Power
Charger is inoperative and unit
will not accept AC.
Charger is supplying a lower
charge rate.
Charger turns OFF while
charging
from a generator.
Sensitive loads turn off
temporarily when transferring
between grid and inverting.
Noise from Transformer/case*
www.aimscorp.com
AC voltage has dropped
out-of-tolerance
Charger controls are improperly
set.
Check the AC voltage for
proper voltage and frequency.
Refer to the section on adjusting
the “Charger Rate”.
Low AC input voltage.
Source qualified AC power..
Loose battery or AC input
connections.
High AC input voltages from the
generator.
Check all DC /AC connections.
Inverter's Low voltage trip voltage
may be too low to sustain
certain loads.
Applying specific loads such as
hair drier
Load the generator down with a
heavy load.
Turn the generator output
voltage
down.
Choose narrow AC voltage in
the DIP switch, or Install a UPS
if possible.
Remove the loads
*The reason for the noise from transformer and/or case
When in inverter mode sometimes the transformer and/or case of the inverter may vibrate and make noise.
If the noise comes from transformer:
According to the characteristics of our inverter, there is one type of load which most likely may cause
rattles of transformer.
That is a half wave load: A load that uses only half a cycle of the power. This tends to cause an imbalance
of the magnetic field of the transformer, reducing its rated working freq from 20KHz to, say, maybe 15KHz
(it varies according to different loads). In such a case the frequency of noise falls exactly into the range
(200Hz-20KHz) that human ears can hear.
The most common load of such kind is a hair
dryer. If the noise comes from the case:
Normally when loaded with inductive loads, the magnetic field generated by the transformer keeps attracting
or releasing the steel case at a specific frequency, this may also cause noise.
Reducing the load power or using an inverter with bigger capacity will normally solve this problem.
The noise will not do any harm to the inverter or the loads.
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5 Warranty
We offer a 1 year limited warranty.
The following cases are not covered under warranty.
1 DC polarity reverse.
The inverter is designed without DC polarity reverse protection. A polarity reverse may severely damage
the inverter.
2 Wrong AC wiring
3 Operation in a moist environment.
4 Operating with an undersized generator or generator with unqualified wave form.
AIMS Operating Corp., Inc. dba AIMS Power Warranty Instructions:
This product is designed using the most modern digital technology and under very strict quality control and
testing guide lines. If however you feel this product is not performing as it should, please contact us:
[email protected] or (775)359-6703.
We will do our best to resolve your concerns. If the product needs repair or replacement, make sure to keep
your receipt/invoice, as that will need to be sent back along with the package and RA# prepaid to AIMS.
You have a full 1 year from date of purchase warranty.
This warranty is valid world wide with the exception that freight and duty charges incurred outside the
contiguous 48 United States will be prepaid by customer.
Except as provided above, AIMS makes no warranty of any kind, express or implied, including without
limitation the implied warranties of merchantability and fitness for a particular purpose. In no event shall
AIMS be liable for indirect, special or consequential damages. This warranty only applies to AIMS Power
branded products. All other name brand products are warranted by and according to their respective
manufacturer. Please do not attempt to return non-AIMS Power branded products to AIMS Power.
For additional products such as:
- Modified sine wave inverters
- Pure sine wave inverters
- Solar Charge Controllers
- On Grid Inverters
- Inverter Chargers and Automatic transfer switches
- Custom cut cables
- Batteries
- Solar Panels
Please visit our web site: www.aimscorp.net
To find out where to buy any of our products, you may also e-mail:[email protected] or call (775)359-6703.
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Appendix 1
Global LF Series Inverter & Charger Spec Sheet
Electrical Specifications
D Inp
C ut
Inve
rter
Outpu
t
Power Rating
Continuous Output Power
Surge Rating(20s)
Output Waveform
Nominal Efficiency
Line Mode Efficiency
Power Factor
600W
1800W
Pure Sine wave/Same as input(Bypass mode)
80%(Peak)
>95%
0.9-1.0
Nominal Output Voltage RMS
Output Voltage Regulation
Output Frequency
Short Circuit Protection
Typical transfer Time
THD
120Vac
±10% RMS
50/60Hz ± 0.3Hz
Yes, Current Limit Function (Fault after 1sec)
10ms(Max)
Typically<3%, Max 10% under full linear load
Nominal Input Voltage
Minimum Start Voltage
Low Battery Alarm
Low Battery Trip
High Voltage Alarm & Fault
High DC Input Recovery
12.0Vdc
10.0Vdc
10.5Vdc / 11.0Vdc
10.0Vdc / 10.5Vdc
16.0Vdc
15.5Vdc
Low Battery Voltage Recover
Idle Consumption-Search Mode
13.0Vdc
< 25 W when Power Saver On
Narrow: 100~135VAC;
Wide: 90~135VAC ;
Narrow: 47-55±0.3Hz for 50Hz, 57-65±0.3Hz for 60Hz
Wide:42-68±0.3Hz for 50Hz/60Hz
Input Voltage Range
Input Frequency Range
A Char
C ge
600W
Output Voltage
Charger Breaker
Rating(120Vac)
Max Charge Rate
Over Charge Protection
Shutdown
Battery type
Gel U.S.A
Depends on battery type
Fast Vdc
14
Float Vdc
13.7
A.G.M 1
A.G.M 2
Sealed Lead Acid
Gel Euro
Open Lead Acid
Calcium
14.1
14.6
14.4
14.4
14.8
15.1
13.4
13.7
13.6
13.8
13.3
13.6
7A
20A to 25A +/-5A , depending on models
15.7V for 12Vdc
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De-sulphation
Remote Control
Input Voltage Waveform
Nominal Voltage
15.5 for 4hrs
Yes. Optional
Sine wave (Grid or Generator)
120Vac
Low Voltage Trip
Low Voltage re engage
High Voltage Trip
High Voltage re engage
Max Input AC Voltage
Nominal Input Frequency
80V/90V±4%
90V/100V±4%
140V±4%
135V±4%
150VAC
50Hz or 60Hz (Auto detect)
Narrow: 47±0.3Hz for 50Hz, 57±0.3Hz for 60Hz
Low Freq Trip
Low Freq re engage
M
e
c
h
a
n
i
c
a
l
S
p
e
c
i
f
i
c
a
t
i
o
n
High Freq Trip
High Freq re engage
Mounting
Inverter Dimensions(L*W*H)
Inverter Weight
Shipping Dimensions(L*W*H)
Wide:40±0.3Hz for 50Hz/60Hz
Narrow: 48±0.3Hz for 50Hz, 58±0.3Hz for 60Hz
Wide:42±0.3Hz for 50Hz/60Hz
Narrow: 55±0.3Hz for 50Hz, 65±0.3Hz for 60Hz
Wide: 70Hz for 50Hz/60Hz
Narrow: 54±0.3Hz for 50Hz, 64±0.3Hz for 60Hz
Wide: 68Hz for 50Hz/60Hz
Wall mount
325*173*135mm/12.8*6.8*5.3"
7.5KG/16.5lb
475*230*205mm/18.7*9*8"
Standard Warranty
Shipping Weight
Display
8.5KG/18.7lb
Status LED
※Specifications in this manual are subject to change without prior notice.
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