AIMS Power PICOGLF10W12V120V User manual

Global LF Series Pure Sine Wave Inverter
Charger User’s Manual
PICOGLF10W12V120V PICOGLF15W12V120V
PICOGLF20W12V120V PICOGLF30W12V120V
ETL Listed to UL 458 and CSA 22.2 No. 107.1

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Table of Contents
1. Important Safety Information............................................................................................................................................- 2 -
1.1 General Safety Precautions..............................................................................................................................................- 2 -
1.2 Precautions When Working with Batteries......................................................................................................................- 2 -
2 Introduction ........................................................................................................................................................................- 3 -
2.1 General Information ........................................................................................................................................................- 3 -
2.2 Application ......................................................................................................................................................................- 3 -
2.3 Mechanical Drawing .......................................................................................................................................................- 4 -
2.4 Features ...........................................................................................................................................................................- 6 -
2.5 Electrical Performance ....................................................................................................................................................- 6 -
2.5.1 Inverter .................................................................................................................................................................- 6 -
2.5.2AC Charger...........................................................................................................................................................- 7 -
2.5.3 Transfer...............................................................................................................................................................- 10 -
2.5.4 Power Saver........................................................................................................................................................- 10 -
The inverter is factory defaulted to detect load for 250ms every 3 seconds. This power sensing can be customized to “Unit
off charging” via the SW3 on DIP switch. ..........................................................................................................................- 11 -
2.5.5 Protections..........................................................................................................................................................- 11 -
2.5.6 Remote Control ..................................................................................................................................................- 12 -
2.5.7 LED Indicator.....................................................................................................................................................- 13 -
2.5.8AudibleAlarm ....................................................................................................................................................- 13 -
2.5.9 FAN Operation ...................................................................................................................................................- 14 -
2.5.10 DIP Switches ....................................................................................................................................................- 14 -
2.5.11Auto Generator Start.........................................................................................................................................- 16 -
2.5.12 Battery Temperature Sensing............................................................................................................................- 16 -
2.5.13 Other Features ..................................................................................................................................................- 17 -
2.5.14 Digital Time Switch Operating Instructions.....................................................................................................- 17 -
3 Installation........................................................................................................................................................................- 18 -
3.1 Unpacking and Inspection.............................................................................................................................................- 18 -
3.2 Installation Location, Tools & Materials.......................................................................................................................- 18 -
3.3 DC Wiring .....................................................................................................................................................................- 19 -
3.4 AC Wiring......................................................................................................................................................................- 21 -
3.5 Grounding......................................................................................................................................................................- 21 -
3.6 Mounting the Inverter....................................................................................................................................................- 23 -
4 Troubleshooting Guide.....................................................................................................................................................- 25 -
5 Limited Warranty..............................................................................................................................................................- 28 -
Appendix 1 - PICOGLF Series Spec Sheet.........................................................................................................................- 29 -
Appendix 2 - Circuit Schematics.........................................................................................................................................- 31 -
Appendix 3 - Installation Diagram......................................................................................................................................- 33 -
Appendix 4 - Inverter Efficiency.........................................................................................................................................- 34 -
Note the unit’s model and serial number in case you need to provide this information in the future. It
is much easier to record this information now than try to gather it after the unit has been installed.
Model Number:
Serial Number:

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1. Important Safety Information
Save This Manual! Read this manual before installation, it contains important safety, installation
and operating instructions. Keep it in a safe place for future reference.
All wiring must follow the National Electric Code, Provincial or other codes in effect at the time
of installation, regardless of suggestions in this manual. All wires should be copper conductors.
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. Overheating
may result. Allow at least 12” 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 inverter’s 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 inverter’s AC output is, at no time, connected to its AC input.
WARNING:LIMITATIONS OF USE
NOTE THAT THE INVERTER CHARGER SHOULD NOT BE USED IN CONNECTION WITH LIFE
SUPPORT SYSTEMS. WE MAKE NO WARRANTY OR REPRESENTATION IN CONNECTION
WITH THESE PRODUCTS FOR SUCH USE. USING THE INVERTER/CHARGER WITH THIS
EQUIPMENT IS AT YOUR OWN RISK.
1.2 Precautions When Working with Batteries
1-2-1. If battery acid contacts skin or clothing immediately wash with soap and water. If acid enters eyes
immediately rinse eyes with running cold water and seek immediate medical attention.
1-2-2. Never smoke or allow a sparks or flames in the vicinity of a battery.
1-2-3. Do not drop a metal tool on the battery. The resulting spark or short-circuit on the battery will cause an
explosion.

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1-2-4. Remove personal metal items such as rings, bracelets, necklaces, and watches when working with a
battery. A battery produces a short-circuit current high enough to weld any metal objects and will cause 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, NiCad/NiFe and LifePO4 type rechargeable batteries. Other types of batteries may swell or
burst causing personal injury and damage.
2 Introduction
2.1 General Information
The Global LF Series Pure Sine Wave Inverter Charger product line is a combination of an inverter
and battery charger with an AC auto-transfer switch into one complete system with a peak
conversion efficiency of 88%. It is packed with unique features and it is one of the most advanced
inverter chargers on the market today. It features power factor correction, sophisticated multi-stage
charging and pure sine wave output with unprecedentedly high surge capability to meet demanding
power needs of inductive loads without damaging the equipment.
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 Inverter mode. Once the qualified AC power is restored the relay is
re-energized and the load is automatically reconnected to AC bypass mode. The Global LF Series Inverter is
equipped with a powerful four stage smart charger and includes an auto generator start feature. The overload
capacity of the inverter charger products is 300% of continuous output for up to 20 seconds to reliably support
tools and equipment.
Another important feature is that the inverter can be easily customized to Battery priority via a DIP switch.
This helps to extract maximum power from the battery in renewable energy systems such as solar and wind.
The Global LF Series Pure Sine Wave Inverter is suitable for renewable energy systems in work trucks, RV,
marine and emergency appliances.
To get the most out of the power inverter, it must be operated and maintained 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 –televisions, DVRs, video games, stereos, musical instruments and satellite
equipment
And much more….

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2.3 Mechanical Drawing
PICOGLF 1-3KW Models DC Side (Figure 1)
Figure 1
PICOGLF 1-3KW Models AC Side (Figure 2)

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Figure 2
PICOGLF 1-3KW Models TOP Side (Figure 3)
Figure 3

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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 increased charging precision
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 100Amps, selectable from 25%-100%
10 ms typical transfer time between battery and AC, guarantees power continuity
Smart LCD remote control panel (optional)
Automatic ground & neutral bonding with manual disability (for 120Vac models)
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 Inverter
Topology
The Global LF inverter/charger is built according to the following topology.
Invert: Full Bridge Topology.
Charge: Isolated Boost Topology.
It works bi-directionally: in one direction it converts DC power from the battery to AC power (Inverter
Mode) and in the other direction it converts external AC power to DC power to charge the batteries (AC
Mode). The same power components are used in both directions, resulting in high-energy transfer efficiency
with fewer components.
Please note that the inverter/charger can only work in one direction at one time (i.e. it cannot work as an
inverter and as a charger at the same time).
When operating in inverter mode, the direct current (DC) that enters the inverter from the batteries is filtered
by a large input capacitor and switched “On” and “Off” by the Metal Oxide Silicon Field Effect Transistors
(MOSFET) at a rate of 50 Hz or 60Hz, in this step the DC is converted to low voltage synthesized sine wave
AC using an H-bridge configuration and high frequency PWM (Pulse Width Modulation) technique. It is
then directed into the transformer which steps the low AC voltage up to 230 or 120 volts.
The unit has a 16bit, 4.9MHZ microprocessor to control the output voltage and frequency as the DC input
voltage and/or output load varies.
Because of high efficiency MOSFETs and the heavy transformers, it outputs PURE SINE WAVE AC with
an average THD of 10% (min 3%, max 20% under full linear loads) depending on load connected and
battery voltage. The peak DC to AC conversion efficiency of the Global LF series is >92%.
Don’t parallel theAC output of the inverters to increase power capacity as they have no
stacking functionality.

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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 time for it to self-diagnose and 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.
Caution:
Turn the charge current control switch gently to avoid breakage due to over-turning.
2.5.2 AC Charger
The 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 95-127VAC,
and AC freq is in the range of 48-54 Hz(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 15%-100% via a liner 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. The liner switch can effectively reduce
the max charging current to 15% of its peak.
Choosing “0”in the battery type selector will disable the charging function.
There are 3 charging stages:
Bulk Charging: (fast charge LED solid) 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: (fast charge LED blinking This is the second charging stage 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: (float charge LED solid)The third charging stage occurs at the end of theAbsorb Charging
time. While Float charging, the charge voltage is reduced to the float charge voltage (determined by the

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Battery Type selection*). In this stage, the batteries are kept fully charged and ready if needed by the
inverter.
If theA/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.
Curves in below picture (Figure 4) show the current and voltage in the battery charging process.
Figure 4
Figure 5
De-sulphation
Battery Type Selector Settings
Switch Position
Description
Boost / Vdc
Float / Vdc
0
Charger Off
1
Gel USA
14.0
13.7
2
AGM 1
14.1
13.4
3
AGM 2
14.6
13.7
4
Sealed lead acid / (LIFEPO4 Lithium)
14.4
13.6
5
Gel EURO
14.4
13.8
6
Open lead acid
14.8
13.3
7
Calcium
15.1
13.6
8
De-sulphation
15.5 (4 Hours then Off)
9
Not used or customized*
Above figures based on 12Vdc models, *2 for 24Vdc, *4 for 48Vdc.
*For some customized models, position 9 is programmed with a customized algorithm. Please refer
to the product label or the manufacturer for more information.

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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 and when and how you would 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"
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 accidently 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
Current
PICOGLF10W12V120V
35A
PICOGLF15W12V120V
50A
PICOGLF20W12V120V
70A
PICOGLF30W12V120V
100A
Figure 6
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 recommended 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.
As a general rule, the Bulk Charging Current should be limited to 30% of the capacity of the battery bank.
Higher charging current may be used if permitted by the battery manufacturer.
Caution:
Please use a small jeweler’s style flat-head screwdriver to turn the charge current
control switch gently to avoid breakage due to over-turning.
To guarantee the best performance ofAC charger when the AC input is from a
generator, the standby generator should be of at least 150% higher capacity than the
inverter.
Warning! Operation with an under-rated generator or generator with unqualified
wave form may cause premature failure which is not under warranty.

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2.5.3 Transfer
Swift Power Transfer
While in the Standby Mode, the AC input of the inverter is continually monitored. Whenever AC power falls
below the low AC voltage trip voltage (90VAC default setting for 120VAC), the inverter automatically
transfers back to the Invert Mode with minimum power 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 even shorter from Inverter mode to Standby mode.
This transfer time is usually fast enough to keep your equipment (including computers) powered up, thus our
inverter can be used as a line interactive UPS.
Synchronized Power Transfer
When a load is transferred from inverter AC output to another backup AC source of power through the
transfer switch, there will be a finite interruption of power to the load for the transfer to take place.
A mismatch of phase and frequency of the inverter AC output and the backup AC source in transfer is likely
to damage the backup AC source / a reactive load.
With sophisticated circuitry design, our inverter will first lock on the frequency and phase of the input shore
power/generator power and make a smooth and safe transfer at the zero voltage point to minimize the impact
on the power modules.
Transfer Delay
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 sufficient time for a generator
to spin-up to a stable voltage and frequency 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 Power Saver
There are two different working statuses for our Global LF inverter:
“Power On”and “Power Off”.
When the power switch on power switch panel (Figure 7) 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.
Figure 7

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The inverter is factory defaulted to detect load for 250ms every 3 seconds. This
power sensing can be customized to “Unit off charging”via the SW3 on DIP
switch.
Power saver on
Figure 8
Power saver off
Figure 9
Power saver on (Load detected)
Figure 10
Note: The minimum power of a load to take inverter out of sleep mode (Power Saver On) is 50 Watts. For
split phase models, the power threshold of sleep mode is 50W between Hot1 and Neutral and 200W between
Hot 1 and Hot 2. There is no load detection between Hot2 and Neutral.
The Global LF Series is designed with extremely low idle power consumption which is only a mere
0.8-1.8% of its rated power.
Global LF Series Idle Power Consumption (in Watts)
Model NO
Power Saver Off
Power Saver On (3Secs)
PICOGLF10W12V120V
12.5
7.5
PICOGLF15W12V120V
13.5
8
PICOGLF20W12V120V
28
12.7
PICOGLF30W12V120V
55
21.7
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).
2.5.5 Protections

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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 needs 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 is over 105ºC(221℉), and go to fault
(shutdown Output) after 30 seconds. The switch needs 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 inverter mode.
After the reason for the fault is cleared, the inverter needs be reset to start working.
2.5.6 Remote Control
Apart from the switch panel on the front (or top) side of the inverter, an extra LCD remote switch panel
(Figure 11, sold separately Part #: REMOTELF) connected to the remote port at the DC side of the inverter
through a standard ethernet cable can also control the operation of the inverter.
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.
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 LCD remote control
data cable is 60 feet (18 meters).
The LCD remote control panel will display
the operation status of the inverter,
including:
•Input AC Voltage
•Output AC Voltage
•Battery Voltage
•Output Frequency
•Output Load
•Work Mode
•Alarm Fault
•Battery Capacity
A push button on the left of the panel can
be used to turn off the LCD screen and
save 0.1A current draw on the battery.
Figure 11

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WARNING
Never cut the ethernet 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.
2.5.7 LED Indicator
The operation status of the inverter is shown by the LED’s and the explanation on the LED sticker (Figure
12).
Figure 12
2.5.8 Audible Alarm
The inverter also gives audible alarms during the following status:
Battery Voltage Low
Inverter green LED lit, and the buzzer beeps 0.5s every 5s.
Battery Voltage High
Inverter green LED lit, and the buzzer beeps 0.5s every 1s and Fault after
60s.
Invert Mode Over-Load
(1)110%<load<125%(±10%), No audible alarm in 14 minutes,
Beeps 0.5s every 1s in 15th minute and Fault after 15 minutes;

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(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;
Over Temperature
Heat sink temp. ≥105ºC(221℉), Over temp red LED Lighting, beeps 0.5s
every 1s;
2.5.9 FAN Operation
For 1-3KW models, 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
Enter Condition
Leave condition
Speed
HEAT SINK
TEMPERATURE
T ≤ 60℃(140℉)
T > 65℃(149℉)
OFF
65℃(149℉)≤T < 85 ℃(185℉)
T ≤60℃(140℉) or T ≥ 85℃(185℉)
50%
T > 85℃(185℉)
T ≤80℃(176℉)
100%
CHARGER
CURRENT
I ≤ 15%
I ≥ 20%
OFF
20%< I ≤ 50%Max
I≤ 15% or I > 50%Max
50%
I > 50%Max
I ≤ 40%Max
100%
LOAD Percentage
(INV MODE)
Load < 30%
Load ≥ 30%
OFF
30% ≤ Load < 50%
Load ≤ 20% or Load ≥ 50%
50%
Load ≥ 50%
Load ≤ 40%
100%
Allow at least 12” 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 3 feet
2.5.10 DIP Switches
On the DC end of inverter, there are five DIP switches which enable users to customize the performance of
the device.
Switch #
Switch Function
Position: 0
Position: 1
SW1(Utility Priority)
Low Battery Trip Point
10.0VDC
10.5VDC
SW1(Battery Priority)
10.5VDC
11.5VDC
SW2
AC Input Range
100-135VAC
90-135VAC(40Hz+)
SW3
Power Save Override ON/OFF
Inverter Off
Power Saver On (3 sec)
SW4
Frequency Switch
50Hz
60Hz
SW5
Battery/AC Priority
AC Priority
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 AC 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

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from over-discharging while there is only a small load applied on the inverter.
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, 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 (40Hz plus for 50Hz/60Hz).
Accordingly, the AC charger will also work in a wider voltage and freq range (43Hz plus 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 won’t 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
point(10.5Vdc for 12Vdc, 21Vdc for 24Vdc, 42Vdc for 48Vdc), 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 12.5Vdc (12.5Vdc for 12Vdc, 25Vdc for 24Vdc, 51Vdc for 48Vdc), 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.
2.5.11 Auto Generator Start
The inverter can start up a generator when battery voltage drops.
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 that have automatic starting capability. The generator
must have start and stop controls [i.e., an electric starter and electric choke (for gasoline units)], and the safety
sensors to be able to start and stop automatically.
There is an open/close relay that will short circuit the positive and negative cables from a generator start control.
The input DC voltage can vary, but the max current the relay can carry is 16Amp.
The Auto Generator Start terminal pins are not polarized.
In addition, these two pins can also be used as dry contacts to send out “Low Battery Voltage”signal to an
external alarm device.
Use 18 AWG speaker wire for this application.
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 is equipped with Battery Temperature Sensing for increased charging precision.
The BTS 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 temperature is over 40℃(104℉), it will reduce the charging voltage by 0.1Vdc with every
degree of temperature rise.
We recommend 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 or any other location where the precise
temperature of battery can be detected such as battery mounting racks.
The following table describes approximately how much the voltage may vary depending on the temperature
of the batteries.
Inverter Condition
Temperature on BTS
Charger Operation
Charger Mode
BTS ≥ 50℃(122℉)
Automatically turns off charger
BTS ≤ 40℃(104℉)
Automatically turns on charger
Inverter Mode
40℃(104℉)≤ BTS ≤50℃(122℉)
Increases low voltage shut down point by 0.5Vdc
BTS ≥ 50℃(122℉)
Over Temp Fault

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A Battery Temperature Sensor (Part #:
PICGLFBATS) may be purchased as a
separate accessory. Includes a 33’
cable.
Figure 13
Important: If the battery temperature is allowed to fall to extremely cold temperatures, the inverter with a
BTS may not be able to properly recharge cold batteries due to maximum voltage limits of the inverter.
Ensure the batteries are protected from extreme temperatures. For more detailed technical information,
please contact AIMS Power.
2.5.13 Other Features
Battery voltage recovery start
After low battery voltage shut off, the inverter is able to restore to work after the battery voltage recovers to
13V/26V/52V (with power switch still in “On”position). This function helps to save the users extra labor to
reactivate the inverter when the low battery voltage returns to acceptable range in renewable energy systems.
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 in the risk of fire.
Conformal Coating
The entire line of inverters has been processed with a conformal coating on the PCB, making it water, rust,
and dust resistant.
While these units are designed to withstand corrosion from the salty air, they are not splash proof.
2.5.14 Digital Time Switch Operating Instructions
1. Please connect to the rated power supply and press the "reset" button when starting use it.
2. Programmable setting:
Steps
Key-press
programming
1
press"P"
setting 1 on time (display 1 on)
2
press H+/M+
setting hours and minutes
3
press D+
select same everyday , different everyday, MO-FR,MO-SA ,SA-SU, MO
WEFR,TU TH SA,MO-WE,TH-SA (if it is same everyday, no need to press this
key)

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4
press"P"
Setting 1 OFF time (display 1 off)
5
press H+/M+
Setting hours and minutes turn off time
6
press D+
if you want the same setting everyday,you don\'t need to press this key
7
repeat step 2-6
Setting the 2 to17 ON and OFF time
8
press
Completeset
If you do not require 17 settings press ( ) to the end
3. Full time clock setting
(1) press the " " and "D+" at same time to set the week.
(2) press the" " and "H+" at same time to set the hours.
(3) press the" " and "M+" at same time to set the mins.
(4)press the "MANUAL" will display "AUTO ON" or "AUTO OFF.
(5)press the "MANUAL" can change the status,
"ON" is normally open,"OFF" is normally off.
3 Installation
3.1 Unpacking and Inspection
Carefully remove the inverter/charger from its shipping package and inspect all contents.
Verify the following items are included:
·The PICOGLF Inverter/Charger
·Red and black DC terminal covers
·AC terminal block cover with two Phillips screws
·Two Flange nuts and 4 Phillips screws (installed on the DC terminals).
·PICOGLF Series Owner’s Manual
If items appear to be missing or damaged, contact our authorized dealer or us. 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
warranty work.
3.2 Installation Location, Tools & Materials
Follow all the local regulations to install the inverter.
Install the equipment in an INDOOR location that is dry, clean, cool with good ventilation.
Working temperature: -10℃to 40℃(-14℉to 104℉)
Storage temperature: -40 to 70℃(-40℉to 158℉)
Relative Humidity: 0% to 95%，non-condensing
Cooling: Forced air
CAUTION: Some models are heavy. Use proper lifting techniques during installation to prevent personal
injury.

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WARNING!
The inverter should not be installed in an area that allows dust, fumes, insects or rodents to enter or block the
inverter’s ventilation openings.
This area also must be free from any risk of condensation, water or any other liquid that can enter or fall on
the inverter.
The entire line of inverters has been processed with a conformal coating on the PCB, making it water, rust,
and dust resistant.
While these units are designed to withstand corrosion from the salty air, they are not splash proof.
The inverter’s life is uncertain if used in these types of environments, and inverter failures under these
conditions are not covered under warranty.
Applicable installation codes vary depending on the specific location and application of the
installation. Some examples are: • The U.S. National Electrical Code (NEC) • The Canadian Electrical
Code (CEC) • Canadian Standards Association (CSA) and RV Industry Association (RVIA) for
installation in RVs.
Please follow the code that is in effect at the time of installation.
Installation Tools / Materials
Tools
You will need the following tools to install the Global LF series inverters and the battery temperature sensor.
❐Wire stripper
❐Crimping tools for fastening lugs and terminals on DC cables
❐Phillips screwdriver: #2
❐Slot screwdriver (¼" wide blade max.)
❐Needle-nose pliers
❐Wrench for DC terminals: 9/16"
Materials
You will need the following materials to complete your installation:
❐correct size DC battery cables
❐Terminals and/or crimp connectors for DC cables
❐Copper wire for DC grounding: No. 8 AWG.
❐Terminal or crimp connector for DC grounding cable (for 1/4" stud size)
❐AC output and input wire.
❐If the AC ground wire is stranded, each ground wire requires a ring terminal
❐Six 1/4"–20 1.25" length steel screws or bolts to mount the inverters
3.3 DC Wiring
It is recommended that the battery bank be kept as close as possible to the inverter. The following chart is a
suggested wiring option for 12ft of DC cable.
Follow the minimum wire size. If the DC cable is longer than 12ft, increase the size of the cable to reduce voltage
drop.