PowMr B097P7C6X3 Solar Inverter 5000W Off Grid 48V Inverter User Manual
- June 10, 2024
- PowMr
Table of Contents
B097P7C6X3 Solar Inverter 5000W Off Grid 48V Inverter
Product Information
The product is a solar inverter that converts light energy into
DC power, which can either charge the battery or directly reverse
into alternating current to power the load. The solar inverter has
four charging modes: PV priority, Utility Priority, Hybrid
Charging, and Only Solar Charging. It is recommended to use Lithium
batteries or deep cycle Sealed Lead Acid, Flooded, Gel, AGM
batteries with the system. The product must be installed and wired
in compliance with local and national electric codes (NEC) by a
certified technician.
Key Features
- Photovoltaic Modules (PV)
- Power or generator (Utility)
- Battery
- Household load
- Four charging modes: PV priority, Utility Priority, Hybrid
Charging, and Only Solar Charging
Product Usage Instructions
-
Read all instructions and cautions in the manual before
beginning installation. -
Ensure that installation and wiring comply with local and
national electric codes (NEC) and are done by a certified
technician. -
Do NOT disassemble or attempt to repair the inverter as there
are no serviceable parts for this inverter. -
DO NOT parallel this device with other AC input sources to
avoid damage. -
Do NOT attempt to touch the unit while it is operating as
temperatures will be very hot. In addition, do not open the
terminal cover while the unit is in operation. -
Ensure all connections going into and from the inverter are
tight. There may be sparks when making connections, therefore, make
sure there are no flammable materials or gases near installation.
Installing breakers or fuses outside of the unit is recommended.
After installation, check that all line connections are tight and
secured. -
Use Lithium batteries or deep cycle Sealed Lead Acid, Flooded,
Gel, AGM batteries with the system. Do NOT let the positive (+) and
negative (-) terminals of the battery touch each other. -
Be careful when working with large lead acid batteries. Wear
eye protection and have fresh water available in case there is
contact with the battery acid. -
Ensure there is enough ventilation to release explosive battery
gases that may be present while charging. -
Review the specific requirements of the battery used in the
system to avoid over-charging and excessive gas precipitation that
may damage the battery plates and activate material shedding on
them. Too high of an equalizing charge or too long of one may cause
damage. -
The solar inverter has four charging modes: PV priority,
Utility Priority, Hybrid Charging, and Only Solar Charging. PV
Priority mode makes full use of the solar input during the day in
order to charge the battery bank. Only when solar fails to start or
is interrupted will the unit automatically switch to utility mode
for backup. -
The product can power a variety of household and office loads,
including refrigerators, lamps, televisions, fans, air
conditioning, and other AC loads.
Important Safety Instructions
Please save these instructions for future use!
Read all of the instructions and cautions in the manual before beginning the
installation !
Important Safety Instructions
Installation and wiring must comply with the Local and National Electric Codes
(NEC) and must be done by a certified technician.
Do NOT disassemble or attempt to repair the inverter. There are no serviceable
parts for this inverter. DO NOT parallel this device with other AC input
sources to avoid damage.
DO NOT attempt to touch the unit while it is operating as temperatures will be
very hot. In addition, do not open the terminal cover while the unit is in
operation.
Make sure all connections going into and from the inverter are tight. There
may be sparks when making connections, therefore, make sure there are not
flammable materials or gases near installation. Installing breakers or fuses
outside of the unit is recommended. After installation, check that all line
connections are tight and secured.
Do NOT let the positive (+) and negative (-) terminals of the battery touch
each other. Use Lithium batteries or deep cycle Sealed Lead Acid,
Flooded, Gel, AGM batteries.
Explosive battery gases may be present while charging. Be certain there is
enough ventilation to release the gases.
Be careful when working with large lead acid batteries. Wear eye protection
and have fresh water available in case there is contact with the battery acid.
Over-charging and excessive gas precipitation may damage the battery plates
and activate material shedding on them. Too high of an equalizing charge or
too long of one may cause damage. Please carefully review the specific
requirements of the battery used in the system.
Table of Contents
Important Safety Instructions ………………………………………………………………………………………. 1 General
Information…………………………………………………………………………………………………….. 3
Key Features ……………………………………………………………………………………………………… 3 Battery Charging Modes
……………………………………………………………………………………… 4 Load Output Working
Modes……………………………………………………………………………….. 6 Product Overview
……………………………………………………………………………………………………….. 7 Dimensions
………………………………………………………………………………………………………………… 8
Installation………………………………………………………………………………………………………………….. 9 Location
Recommendations ………………………………………………………………………………..9
Wiring………………………………………………………………………………………………………………. 11 Battery Wiring
………………………………………………………………………………………………….. 12 PV Wiring
…………………………………………………………………………………………………………. 13 AC Output Wiring
……………………………………………………………………………………………… 14 AC Input Wiring
………………………………………………………………………………………………… 15 Communication
Ports………………………………………………………………………………………………… 16 Dry
Contacts…………………………………………………………………………………………………….. 16
RS485………………………………………………………………………………………………………………. 16 USB
…………………………………………………………………………………………………………………. 16
Operation………………………………………………………………………………………………………………….. 17 LCD
Operation………………………………………………………………………………………………….. 17 LCD Menu
………………………………………………………………………………………………………… 21 LCD Programmable
Features……………………………………………………………………………………… 22 Electronic Protections
……………………………………………………………………………………………….. 28 Fault Codes
………………………………………………………………………………………………………………. 29
Maintenance……………………………………………………………………………………………………………… 30 Technical
Specifications ……………………………………………………………………………………………. 31 Non-Lithium Battery
Parameters………………………………………………………………………… 33 Lithium Battery
Parameters……………………………………………………………………………….. 34 Charging Parameters
Glossary…………………………………………………………………………………… 35
General Information
Pow series is a new hybrid solar charge inverter, which integrates solar
energy storage & means charging energy storage and AC sine wave output. Thanks
to DSP control and advanced control algorithm, it has high response speed,
high reliability and high industrial standard. Four charging modes are
optional, i.e. Only Solar, Mains Priority, Solar Priority and Mains & Solar
hybrid charging; and two output modes are available, i.e. Inverter and Mains,
to meet different application requirements. The solar charging module applies
the latest optimized MPPT technology to quickly track the maximum power point
of the PV array in any environment and obtain the maximum energy of the solar
panel in real time. Through a state of the art control algorithm, the AC-DC
charging module realizes fully digital voltage and current double closed loop
control, with high control precision in a small volume. Wide AC voltage input
range and complete input/output protections are designed for stable and
reliable battery charging and protection. Based on full-digital intelligent
design, the DC-AC inverter module employs advanced SPWM technology and outputs
pure sine wave to convert DC into AC. It is ideal for AC loads such as
household appliances, power tools, industrial equipment, and electronic audio
and video equipment. The product comes with a segment LCD display design which
allows real-time display of the operating data and status of the system.
Comprehensive electronic protections keep the entire system safer and more
stable.
Key Features
1.Full digital voltage and current double closed loop control, advanced SPWM
technology, output of pure sine wave. 2.Two output modes: mains bypass and
inverter output; uninterrupted power supply. 3. Available in 4 charging modes:
Only Solar, Utility Priority, PV Priority, Utility & Solar hybrid charging. 4.
Advanced MPPT technology with an efficiency of 99.9%. 5.Designed with a LCD
screen and 3 LED indicators for dynamic display of system data and operating
status. 6. Manual ON/OFF switch controlling AC output. 7.Power saving mode
available to reduce empty load loss. 8. Intelligent variable speed fan to
efficiently dissipate heat and extend system life. 9. Lithium battery
activation by PV solar or mains, allowing access of lead-acid battery and
lithium battery. 10.Complete protections, including short circuit protection,
over voltage and under voltage protection, overload protection, reverse
protection, etc.
Photovoltaic Modules (PV): convert light energy into DC power, charge the
battery through the solar inverter charger, or directly reverse into
alternating current to power the load.
Power or generator (Utility): Access at the AC input can power the load and
charge the battery. If you do not have a power supply or generator, the system
can also operate normally, where the load is supplied by batteries and
photovoltaic modules.
Battery: The role of the battery is to ensure the normal use of electricity
for the system load when the solar energy is insufficient and there is no
electricity.
Household load: Can be accessed to a variety of household and office loads,
including refrigerators, lamps, televisions, fans, air conditioning and other
AC loads.
Battery Charging Modes:
The solar inverter will have 4 operational charging modes which changes the
logic as how and when to charge the battery banks. The solar inverter has four
charging modes: PV priority, Utility Priority, Hybrid Charging, and Only Solar
Charging.
PV Priority In PV Priority mode it will make full use of the solar input
during the day in order to charge the battery bank. This effectively allows
using the unit off-grid during peak utility times in order to cut costs on
utility charging. Only when solar fails to start or is interrupted will the
unit automatically switch to utility mode for backup.
Utility Priority In Utility Priority mode, the detected AC input will be
priority for battery charging. If the power becomes unstable or unusable, then
it will switch to PV charging.
Hybrid Charging In Hybrid Charging, PV and Utility will work together to
charge the battery bank at the same time. Priority will be given to PV and
utilize MPPT charging. Upon PV charging being insufficient, the power supply
replenishes with Utility power. This method is the fastest to charge and
suitable for unstable areas of the grid, ready to provide adequate backup
power supply.
Only Solar Charging Only solar charging is the most energy-efficient way to
charge your battery bank and does not make use of AC input. Utility will not
charge the battery, even if it is available.
Load Output Working Modes
The solar inverter has 3 working modes that dictate how the incoming power is
used to power the loads.Users may configure the output source priority to
configure load power.
PV Priority In this mode only the incoming solar energy and battery power are
used to power the loads. This can maximize the use of green energy when
selecting PV priority in Battery Charging Mode to achieve overall energy
conservation and emission reduction. Upon there being no more usable solar
energy or the battery voltage drops to a low voltage setpoint, then the unit
will switch to utility power to continue to power up the loads. It is
recommended to be in this mode for relatively stable areas.
Utility Priority Equivalent to a backup UPS for use in unstable areas of the
grid, Utility will provide power to the loads as priority. Solar and battery
energy will provide power to the loads only when utility power is not
available.
Inverter Mode The Battery energy will supply power to the loads. Utility
provides power to the loads only when battery voltage drops to low voltage
which maximizes the use of DC power.
Product Overview
Identification of Parts 2
3 4 1
Key Parts
1
LCD Buttons
9
2
Mounting Holes
10
3
LCD Screen
11
4
LED Indicators
12
5
AC Input Breaker
13
6
Dry Contact Port
14
7
RS485 Communication Port
15
8
USB Debugging Port (Internal Use)
AC Input terminal AC Output terminal
Cooling Fans PV Input Terminal Main On/Off Power Switch Battery Input Terminal
Grounding Lug
16.8in 426m m
Dimensions
12.7in 322mm
0.2in 6mm
06.m2imn
0.4in 11mm
4.9in 124mm
Installation
Please read this manual carefully and familiarize yourself with the
installation procedures before installation.
Installation Safety
The unit should be installed in a well-ventilated, cool, and dry
environment.Make sure the fans of the unit and the ventilation holes are not
blocked.
Do not expose the unit to rain, moisture, snow, or liquids of any type.
Never install the inverter in a sealed enclosure with flooded batteries. Gas
can accumulate and there is a risk of explosion.
Do not install the inverter in the same compartment as the battery bank
because it could serve as a potential fire hazard.
Location Recommendations
Ensure installation follows the following guidelines:
1. Cool, dry, well-ventilated area — Heat is the worst enemy for electronic
equipment. Inverters must be in an area where the fans are not blocked or
where they are not exposed directly to the sun. They should be in an area free
of any kind of moisture and allow for clearance of at least 8″ around the unit
to provide adequate ventilation.
2. Protection against fire hazard — the unit should be away from any
flammable material, liquids, or any other combustible material. The unit can
spark and the consequences could be severe.
3. Close proximity to battery bank–prevent excessive voltage drop by keeping
the unit close to the battery bank and having a properly sized wire going from
the battery bank to the inverter.
4. Limiting electromagnetic interference (EMI) — ensure the inverter is
firmly grounded to a building, vehicle, or earth grounded. Keep the inverter
away from EMI receptors such as TVs, radios, and other audio/visual
electronics to prevent damage/interference to the equipment.
Other Precautions: When installing the battery, be very careful, when
installing lead-acid liquid batteries, you should wear protective glasses,
once in contact with battery acid, please wash with water in time. Avoid
placing metal objects near the battery to prevent short circuits in the
battery. Acid gas may be generated when the battery is charged so ensure good
ventilation around the environment. Incorrect or improper connection points
and corroded wires can cause great heat to melt the wire insulation, burning
surrounding materials, and even cause fire, so ensure that the connection is
tightened It is best to avoid mobile applications when the wire shakes and
cause the connection head loose. Outdoor installation should avoid direct
sunlight and rain, snow. Do not install the solar inverter in harsh
environments such as damp, greasy, flammable and explosive areas or where dust
accumulation is high. The municipal electrical input and AC output are high
voltage, do not touch the wiring. Do not touch the unit when the fan is
working. To avoid damage, do not use more than one (in parallel) input AC
power supply.
Please Note: While the Solar inverter has fans for cooling, this installation
location optimal for natural convection cooling will improve the overall
efficiency .
Wiring
The PowMr Solar Inverter is suitable for 48V battery banks systems ONLY. Not
following the minimum DC requirement may cause irreversible damage to the
unit.
WARNINGWARNING
The solar inverter components at the AC input/output, battery components, and
PV components will produce high energy output. Make sure to connect the
appropriate component to the appropriate labeled terminals.
Be careful of the positive and negative poles. Reversing the poles may cause
permanent damage to the inverter.
CAUTION
The input terminals of the inverters have large capacitors connected to them.
Once a positive and negative wire are connected to the terminals, it will
complete the circuit, and commence drawing a heavy current momentarily. As a
result, there may be a sparking occurring even if the inverter is in the off
position. To minimize sparking, it is recommended that the user have the
appropriate size wire feeding into the solar inverters and/or install an
external fuse leading into the inverter.
NOTE
After the power switch is switched off, there is still high energy inside
thesolar inverter, do not open or touch the internal device, wait for the
capacitance to be put off after the relevant operation.
Locate the power button on the solar inverter and make sure the solar inverter
main power is turned off
ON
OFF
Remove the terminal cover by unscrewing the appropriate terminals located on
the face of the solar inverter
Wiring and installation methods must comply with national and local electrical specifications. The following chart is reference only. Longer wire runs between solar panels and the solar inverter as well as longer runs between the solar inverter and battery bank will require thicker wiring size to minimize loss and improve system performance.
Specification
Battery Wiring PV Wiring*
AC Input Wiring
AC Output Wiring
Minimum Recommended Wiring AWG 3AWG 7AWG 7AWG
7AWG
Max Amps
120A 50A 40A Max Bypass 30A Continuous 40A Max Bypass
Battery Wiring
Be careful of the positive and negative poles. Reversing the poles may cause
permanent damage to the inverter.
The input terminals of the inverters have large capacitors connected to them.
Once a positive and negative wire are connected to the terminals, it will
complete the circuit, and commence drawing a heavy current momentarily. As a
result, there may be a sparking occurring even if the inverter is in the off
position. To minimize sparking, it is recommended that the user have the
appropriate size wire feeding into the solar inverters and/or install an
external fuse leading into the inverter.
Rated Battery Discharge Current
85A
Maximum Battery Charging Current
120A
Recommended Wiring
3AWG
Recommended Circuit Breaker
2 pole, 120-140A
Recommended Ring Terminal
5/16″
Make sure any circuit breakers are disconnected and ensure the unit is in the off position.
The solar inverter takes a 48V battery input to operate. This will require combining 12V or 6V batteries in series to achieve the minimum voltage DC requirement. It is recommended to use battery cables with ring terminals. The ring terminals must be firmly tightened and secured on the respective battery terminals to prevent any excessive heating or resistance. Connect the positive and negative battery ring terminals to the respective positive and negative battery terminals on the solar inverter.
PV Wiring
Maximum PV Charging Current
50A
Recommended Wiring
7AWG
Recommended Circuit Breaker
2 pole, 63A
Recommended Wiring
Bare Wire
For PV to charge 48V battery banks, you will need a minimum PV Voc voltage of
60VDC.
When combining panels in parallel it is recommended to use a combiner box for
safety and organizational precautions. The solar inverter accepts a maximum of
150VDC input and requires a 48V battery input to operate. This will require
combining solar panels in series or series parallel to achieve the minimum
voltage DC requirement. Due to many factors affecting PV performance, it is
recommended to utilize the open circuit voltage (Voc) when connecting panels
in series to make sure you stay under the 150VDC input. For parallel
connections, it is recommended to use the short circuit current (Isc) to make
sure you are well under the 50A limit.
The bare wire terminal blocks must be firmly tightened and secured to prevent any excessive heating or resistance. Connect the positive and negative PV wire to the respective positive and negative PV terminal block on the solar inverter.
AC Output Wiring
Only the Live and Neutral wires will be connected to the Output Terminal
Block, the Ground will be connected to the screw terminal. Make sure any
circuit breakers are disconnected and ensure the unit is in the off position.
AC Output should NEVER be connected to public power/utility or a generator.
There are two terminal blocks with “IN” and “OUT” markings. Please do NOT
misconnect input and output connectors.
Maximum Inverter Bypass Current
40A
Recommended Wiring
7AWG
Recommended Circuit Breaker
2 pole, 40A
Carefully place the correct AC wire into the respective AC Output terminal block. The ground output cable will need to be connected to the ground screw terminal located separately from the output terminal block. It is recommended to keep ground as close as possible to the solar inverter charger, the shorter the ground wire, the better. The order should be as follows:
Ground | LLive | NNeutral
AC Input Wiring
The AC input must never be connected to the AC output as irreversible overload
or damage may result The AC Input Terminal Block is connected to circuit
breakers for added protection. Do not modify or alter them as it may cause
irreversible damage to the solar inverter.
There are two terminal blocks with “IN” and “OUT” markings. Please do NOT mis-
connect input and output connectors.
Run the AC input line through the AC input cable entry slot. Make sure to use
appropriate cable sizing when working with AC. Carefully place the correct AC
wire into the respective AC Input terminal block. The order should be as
follows:
Ground | LLive | NNeutral
Communication Ports
Dry Contacts
To use this to function, an auto start controller must be installed on the
generator. there are three contacts; up to down: NO, N, NC Do not store units
with auto gen start feature enabled. Generators exhaust dangerous fumes when
running.
This contact automatically starts the generator and charges battery bank.
Under normal conditions, this terminal is NC-N point closed, NO-N point open.
When the battery voltage reaches the low voltage point, the relay coil is
energized, and NO-N point now is closed and NC-N point now is open.
the NO-N contact can drive the resistive load of 125VAC/1A, 30DCV/1A
While the generator is connected, the unit now operates in “Charging Mode”
with the AC power from the Generator charging the batteries as well as
providing power to the AC loads.
RS485
This port will be used for connecting to the BT-2 Accessory for remote monitoring and control.
Pin No. 1 2 3 4 5 6 7 8
Parameter 5V
RS485-A RS485-B
GND NC CAN_H NC CAN_L
USB
The USB port is for internal purposes only. It will not be supported as it
requires proprietary information.
When using both USB and RS485, you can only use one of two alternatives, not
use both simultaneously .
Operation
Assuming all connections are correct and tightly secured, Locate the power
button on the solar inverter and turn the main power switch to the ON
position.The following describes the basic operation of the solar inverter
charger
LCD Operation
The solar inverter is equipped with 3 LCD indicators and 4 working button
UP
DOWN
ENT
LED AC/INV
CHARGE FAULT
Color Yellow
Green Red
Behavior
Parameter
Solid
The output will be powered by the AC Line
Flash The output is powered by battery or PV in battery mode
Flash Battery is charging Solid Battery is fully charged Solid / Flash System fault
Key
SET UP DOWN ENT
Parameter
Go to / Exit Settings menu Previous selection Next choice Under the Settings
menu, determine/enter options
The arrow only displays during startup
1 and not part of the solar inverter
5
functionality
2
Indicates that the utility/grid is powering the load
6
Indicates that the power utility/grid is
3 powering the battery charging circuit
7
(AC-DC)
4
Indicates solar (PV) power to the battery charging circuit (DC-DC)
8
Indicates that the charging circuit is charging the battery
The arrow only displays during startup and not part of the solar inverter
functionality
Indicates that the battery is powering the inverter circuit (DC-AC)
Indicates that the inverter circuit is powering the load
Icon
Function
Indicates that the AC input is connected to AC Source
The icon is not displayed
Indicates that the PV input is connected
Indicates that the solar inverter charger is connected to the battery. Status:
0 %~24%,
25%~49%,
50%~74%,
75%~100%
Indicates that the current battery type of the solar inverter charger is
lithium
Indicates that the current battery type of the solar inverter charger is a
sealed lead acid
Indicates that the battery is charging
Indicates AC/PV charging circuit is working
AC Load voltage output
Icon
Function
Indicates that the inverter mode circuit is working
Indicates that the solar inverter charger is in the power bypass (Bypass)
Indicating that AC output is in overload state
Indicates load percentage in 25% increments from the overall wattage of the
solar inverter charger
0 %~24%,
25%~49%,
50%~74%,
75%
Indicates that the buzzer is not enabled
Indicates that an alarm has occurred on the solar inverter charger
Indicates that the solar inverter charger is in a faulty state
Indicates that the solar inverter charger is in set mode
1. When not in setting mode displays alarm or fault code 2. In setting mode,
displaying code of parameter item under current setting.
The following is on the left side of the LCD
Indicates AC input
Indicates PV input
Indicates inverter circuit
The icon appears only at startup and is irrelevant to functionality of the
solar inverter
Shows battery voltage, total battery charge current, charge power, AC input
voltage, AC input frequency, PVInput voltage, internal heatsink temperature,
and software version
The following is on the right side of the LCD
Indicates output voltage, output current, output power, output visual power,
battery discharge current, software version. In this setting mode, the
settings under the currently set parameter item code are displayed
LCD Menu Screens
On the LCD home screen, press the “UP”and”DOWN” buttons to turn the page to
view the solar inverter’s real-time data.
1 Battery Input Voltage
Load Output Voltage
2 PV Temperature
PV Output Kilowatts
3 PV Input Voltage
PV Output Current
4 Battery Input Current
Battery Output Current
5 Battery Input Kilowatts
Battery Output Kilowatts
6 AC Input Frequency 7 AC Input Voltage
AC Output Load Frequency Fault code
AC Output Load Current
8 Internal Parameters
Load Output KVA
9 Inverter Temperature 10 APP Software Version
Inverter Output Load Kilowatts Bootloader Software Version
11 Model Battery Voltage Rating
Model Output Power Rating
12 Model PV Voltage Rating
Model PV Current Rating
LCD Programmable Features
Press the “SET” key to enter parameter setting mode. After entering the settings menu, the parameter number 00 flashes and you can press the “UP” and “DOWN” keys to select the parameter code that you want to set. To access the parameter program press “ENT” key to enter the parameter editing state, at which point the value of the parameter flashes. Adjusts the value of the parameter through the “UP” and “DOWN” buttons, and finally press “ENT” to press the key, complete the edit of the parameter, and return to the parameter selection state.
Parameters Number
00
Parameter Name
Exit
Set options
[00] ESC
Description
Exit the settings menu
[01] SOL
Solar energy provides power to the loads as priority. If solar energy is not enough to power all connected loads, battery energy will supply power the loads at the same time. Utility provides power to the loads only when any one condition happens: Solar energy is not available Battery voltage drops to low- level set-point in Program 04
01
Load Working Mode
Utility will provide power to the loads
[01] UTI as priority. Solar and battery energy
Default will provide power to the loads only
when utility power is not available
[01] SBU
Solar energy provides power to the loads as priority. If solar energy is not enough to power all connected loads, battery energy will supply power to the loads at the same time. Utility provides power to the loads only when battery voltage drops to low-level set-point in Program 04
[02] 50.0 The output frequency can be set
02
Output Frequency
[02] 60.0 (Default)
through this menu. By default, the value should be 60Hz
[03] APL
By default, the input voltage range is the same, 90~140VAC
03
AC Input Voltage Range
[03] UPS
By default, the input voltage range is
(Default) the same, 90~140VAC
04 04
14
14
Parameters Number Parameter Name
04
Battery Power to Utility Setpoint
05
Utility to Battery Power setpoint
Set options
44.0V (Default)
[05] 58.8V (Default)
Description
Setting voltage point back to utility source when selecting “SBU ” or “SOL” in
program 01. When the voltage of the battery is lower than this setting, the
output switches from inverting to the utility. The setting range is from 39.6V
– 52V, in 0.4V increments.
Setting voltage point back to battery mode when selecting “SBU” or “SOL” in
program 01. When the battery voltage is higher than the setting value, the
output is switched from the utility to the battery mode. The setting range is
48V – 58.8V, in 0.4V increments. *Cannot be higher than [14]
Solar energy will charge battery as
[06] CSO priority. Utility will charge battery only
when solar energy is not available
Battery Charging
Mode Please Note: If this inverter/charger is working in Battery
[06] CUB
Utility will charge battery as priority. Solar energy will charge battery only when utility power is not available
mode or Power
06
saving mode, only
Solar energy and utility will charge
solar energy can
battery at the same time. MPPT
charge battery. Solar energy will charge battery if it’s
[06]SNU (Default)
Solar energy will be priority charging and when it is insufficient, Utility will become priority. When the
available and
photovoltaic energy is sufficient
enough
again, Utility will stop charging
[06] OSO
Solar energy will be the only charging source even if utility is available
Maximum charging
current: To configure
total charging
The maximum solar charging is 80A,
current for solar and
the maximum Grid/Utility charging is
07
utility chargers. (Max. charging
[07] 80A (Default)
40A (adjustable in Program 28), totaling the maximum current of
current = utility
120A.The range can be configured
charging current +
between 0 ~ 120A
solar charging
current)
Parameters Number Parameter Name
08
Battery type
Set options
[08] USE
Description
User-defined, all battery parameters can be set
[08] SLD (Default)
Sealed lead-acid/AGM battery, constant voltage charging 58.4V, float charging voltage 55.2V
[08] FLD [08] GEL
Flooded lead-acid battery,constant voltage charging 58.4V,float charging
voltage 55.2V
Gel lead-acid battery, constant voltage charging 56.8V,float charging voltage
55.2V
[08] LF14 LF15 LF16
Lithium iron phosphate battery corresponding to 14 strings, 15 strings and 16 strings Default constant voltage charging voltage strings: 50.4V strings: 54V strings: 57.6V
Lithium-ion battery corresponding to
[08] N14 N13
12 strings, 13 strings and 14 strings Default constant voltage charging voltage strings: 53.2V
strings: 57.2V
09 *available in USER and lithium setting
only
Boost Charge Voltage
[09] 57.4 (Default)
Changes the charging voltage setting, set the range 48V to 58.4V, in 0.4V increments
10 *available in USER
setting only
Boost Charge Duration
[10] 120 min (Default)
Raise the boost charge time setting, refers to the constant voltage charging reached at Program 09 . The range is 5min to 900min, in 5 minute increments
11 *available in USER Float Charge Voltage
setting only
[11] 55.2V (Default)
Floating charging voltage set range 48V to 58.4V, in 0.4V increments
Parameters Number Parameter Name
12 *available in USER and lithium setting
only
Low Voltage Load Disconnect
Set options
[12] 42V (Default)
Description
It is recommended to set this voltage below the maximum voltage the battery
can withstand. When this voltage is reached, the loads will be powered off
after a time delay adjustable in Program 13 The range is 38V to 50V, in 0.4V
increments
13 *available in USER and lithium setting
only
Battery Overdischarged Delay Time
**If a power shortage occurs and recovers in a short time, it can
cause damage to your connected appliances. To prevent this kind of damage,
please check manufacturer if
heavy load appliances are equipped with time-delay function before
installation
[13] 5S (Default)
The following parameter sets the delay-time after the battery voltage is below the set-point in Program 12. The set range is 5-50 seconds, in 5s increments
14 *available in USER and lithium setting
only
Battery Under voltage Alarm
15 *available in USER and lithium setting
only
Battery Discharge Limit Voltage
16 *available in FLD and
USER setting only
Set Equalization charging
[14] 44V (Default)
[15] 40V (Default)
[16] DIS [16] ENA (Default)
Warning that the battery is approaching low voltage. The output does not shut
down and the range is 40V to 52V, in 0.4V increments
When the battery voltage goes below this voltage set-point, the solar inverter
will immediately disconnect and shut down immediately. The set range is 36V to
50V, in 0.4V increments
No equalization charging
Enables equalization charging
17 *available in FLD and
USER setting only
Battery Equalization Voltage
[17] 58.4V (Default)
Set equalization charging voltage. The range is 48V to 59.2V, in 0.4V increments
Parameters Number Parameter Name
Set options
Description
18 *available in FLD and
USER setting only
Battery Equalization Duration
[18] 120min (Default)
Setting range is from 5min to 900 min. , in 5min increments
19 *available in FLD and
USER setting only
Battery Equalization Time-Delay
[19] 240min (Default)
Setting range is from 5min to 900 min, in 5min increments
20 *available in FLD and Equalization interval
USER setting only
[20] 30 days (Default)
Setting range is from 0 days to 30 days, in 1 day increments
21 *available in FLD and
USER setting only
Enable Equalization Immediately
[21] DIS (Default)
[21] ENA [22] DIS Default
22 *Power-saving Mode Power-saving Mode
(ECO Mode)
[22] ENA
Stops equalization charging immediately
Starts Equalization charging immediately
Disables power-saving mode
After a 5min delay from setting, the inverter will enter a power saving mode
and detect the load size. Loads greater than or equal to 50W, will be powered
by the solar inverter. Otherwise, it will automatically stay in a low
detecting mode and not power any loads under 50W
[23] DIS
Overload automatic restart is disabled, and the unit will not turn on the loads
23
Overload auto-start
Enables automatic restart if the load shutdown output has occurred. The
[23] ENA unit attempts to restart the output
(Default) after 3 minutes and After 5 attempts
the unit will not longer resume to turn
on the loads
[24] DIS
Over-temperature automatic re-start is disabled
24
Overtemperature auto-start
[24] ENA
The over-temperature protection is activated and upon temperature
(Default)
dropping, the unit automatically
restarts
Parameters Number 25
Parameter Name Buzzer alarm
Set options
Description
[25] DIS No alarm [25] ENA (Default)
Enable alarm
[26] DIS
No alarm prompts when the status of the primary input source changes
26
Alarm
[26] ENA (Default)
Enable alarm prompts when the status of the primary input source changes
Overload bypass: When enabled, the
[27] DIS
When disabled, the unit will not transfer to Utility mode
27
unit will transfer to line mode if overload
occurs in battery mode.
[27] ENA (Default)
When enabled, the unit will transfer to Utility mode if overload occurs in battery mode.
28
Maximum AC
[28] 40A The range can be configured
Charging Current Default between 0-40A
[29] DIS Supply for industrial frequency Default transformer (disabled)
29
Split Phase
[29] ENA
Supply for industrial frequency transformer (enabled)
Set point that recovers and
35
Low Voltage
[35] 50.4V
Disconnect Recover (Default)
reconnects the solar inverter from being disconnected in Low Voltage Disconnect. The range is from 44V –
58.4V, in 0.4V increments.
36
PV Charging Current
[36] 80A (Default)
Adjustable PV current settings. The range is from 0 80A.
When the battery reached at floating
status, it will need to be lower than
37
Battery Charging Boost Return Setpoint
[37] 52V (Default)
this setpoint before it starts charging. The range is the ( Undervoltage Warning ~
( Floating Voltage 1.2V for
the respective battery
Electronic Protections as
Number
1 2 3 4
5
6
7 8 9 10 11 12 13 14 15
Protection
Description
PV Current/Power Limiting Protection
When the configured PV array charge current exceeds the PV rated current, it will be charged at the rated current
PV Night anti-charge protection
At night, the battery is prevented from discharging through the PV component because the voltage of the battery is greater than the voltage of the PV component
Mains input over voltage protection
Mains input under voltage protection
When the mains voltage exceeds 280V (230V model) or 140V (120V model), the
mains charging will be stopped and switched to the inverter mode.
When the mains voltage is lower than 170V (230V model /UPS mode) or 90V (120V
model or APL mode), the mains charging will be stopped and switched to the
inverter mode.
Battery Over-voltage Protection
When the battery voltage reaches the overvoltage disconnect point, the PV and the utility automatically stop charging the battery, preventing damage from overcharging the battery
Battery low-voltage protection
When the battery voltage reaches the low voltage disconnect voltage point, the battery discharge is automatically stopped to prevent excessive discharge of the battery from being damaged
Load output short-circuit protection
When a short-circuit fault occurs at the load output, the output AC voltage is immediately turned off and outputs again after 1sec, for 3 more attempts. If they fail, then the unit will need to be manually powered on
Over-temperature protection
When the internal temperature of the unit is too high, the it will stop charging and discharging
Overload protection
Output again after 3 minutes after overload protection, overload 5 times in a row until the solar inverter charger is powered back, with A table of technical parameters after reference to the load level and duration of the manual
PV reverse polarity
Bypass Protection protection
Protection against reversing PV input connection
Prevents battery power mode from inverting when bypass is active
Bypass Flow Protection Built-in AC input overcurrent protection circuit breaker
Battery input overcurrent protection
Battery input protection
Charge short-circuit protection
When the battery discharge output current is greater than the maximum and
lasts 1 minute, the AC input is loaded
When the battery is reversed or the inverter is shorted inside, the internal
battery input fuse of the inverter fuses to prevent battery damage or fire
The inverter protects and stops when the external battery port is shorted
while the PV or AC is charging stop the output current
Fault Codes
Fault code
01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 17 19 20 21 22 23 26 29
Fault name
BatVoltLow BatOverCurrSw
BatOpen BatLowEod BatOverCurrHw BatOverVolt BusOverVoltHw BusOverVoltSw
PvVoltHigh PvBuckOCSw PvBuckOCHw bLineLoss OverloadBypass OverloadInverter
AcOverCurrHw
InvShort OverTemperMppt OverTemperInv
FanFail EEPROM ModelNumErr RlyShort BusVoltLow
Description
Battery under-voltage alert Battery discharge current software protection
Battery not detected Battery undervoltage stop discharge alarm Battery
overcurrent hardware protection Charge overvoltage protection Bus overvoltage
hardware protection Bus overvoltage software protection PV overvoltage
protection Buck Overcurrent Software Protection Buck Overcurrent Hardware
Protection utility power down Side-by-side load protection inverter overload
protection Inverted overcurrent hardware protection Inverter short-circuit
protection Controller overtemperature protection inverter over temperature
protection Fan failure Memory failure Model settings are wrong Error between
AC output and bypass Internal battery boost circuit failure
Fault
Screen not displaying
Rechargeable battery overvoltage protection Battery undervoltage protection
Fan failure
Over-temperature Protection
Solutions
Make sure the battery is properly connected and charged to be
as able to recognize the solar inverter.
or click any button on the screen to exit screen sleep mode.
Measure whether the battery voltage exceeds 60Vand disconnect the photovoltaic
array from and the power-on.
Wait until the battery is charged to return to above the low voltage recovery
voltage.
Check that the fan is not turning or is blocked by something else.
When the temperature of the equipment cools to, normal charge and discharge
control is restored.
Overload Protection
(1) Reduce the use of electrical equipment;(2) restart the solar inverter charger and load recovery output.
Inverter short-circuit protection
Disconnect or reduce any loads from the unit. Shut down the solar inverter charger and turn on again to clear the error.
PV overvoltage
Check with the meter if the PV input voltage is above the maximum allowable input voltage of 145 V operating voltage.
Battery missed alert
Check that the battery is not connected or that the battery side circuit breaker is not closed.
Maintenance
In order to maintain optimal long-term performance, it is recommended to
perform inspections of the following items twice a year.
1. Make sure that the air flow around the solar inverter is not blocked and
remove any dirt or debris from the radiator. 2. Check all terminals to see if
there is corrosion, insulation damage, high temperature or combustion /
discoloration signs, tighten the terminal screws.
Danger of electric shock! Make sure that all power supplies on solar inverter
disconnected and that all capacitive power is released before checking or
operating accordingly!
Technical Specifications
Model
POW-LVM3.5K-48V
Utility/Grid
Rated input Voltage
110/120Vac
Input voltage range
(90Vac~140Vac) ±2%
Frequency Frequency range Overload / Short circuit Protection
50Hz/ 60Hz (auto detect)
47±0.3Hz ~ 55±0.3Hz (50Hz); 57±0.3Hz ~ 65±0.3Hz (60Hz); Breaker
Efficiency
95%
Conversion time (Bypass and reverse) 10ms
Reverse Flow Protection
Yes
Max Bypass Current load
40A
Inverter
Waveform
Pure Sine Wave
Rated Output (VA)
3500
Rated Output (W) Power factor Output AC Voltage Unstable Input Error
3500 1 120Vac ±5%
Output Frequency (Hz)
50Hz ±0.3Hz 60Hz ± 0.3Hz
Efficiency
91%
Overload protection Peak power
(102%load110%)±10% turn off the output after 5min; (110% load125%)±10% turn
off the output after 10sec; (125% load)±10% turn off the output after 5sec;
5000VA
Motor Capability
2HP
Output Short-circuit Protection
Breaker
Bypass Breaker Specifications
40A
Rated Battery Voltage
48V (minimum start-up voltage 44V)
Battery voltage range Power Saving Mode Self-Consumption No Load Self Consumption
40.0Vdc~60Vdc ± 0.6Vdc 50W 48W
Model
Battery type Maximum Charging Current (AC) Unstable Condition Error Charging
Voltage Range Short-circuit protection Circuit Breaker Specifications
Overcharge Protection
Recommended PV Max PV Operating Voltage MPPT Voltage Range Battery Charging
Range Maximum Input Power Maximum Input Current Maximum Output Power PV
Charging Current Range Short-circuit Protection Wiring Protection
Certifications Operating Temperature Storage Temperature Humidity Noise
Cooling IP Grade Safety Class Dimensions (L-W-D) Weight
POW-LVM3.5K-48V
Utility/Grid Charging
Lead Acid or Lithium 40A ± 5Adc 40 60Vdc Breakers and fuses 40A Yes;
Automatically alerts and then turns off charging after1 minute
Solar (PV) Charging
145Vdc (150 VDC Actual) 60-145Vdc 60-115Vdc 40-60Vdc 4400W 80A 4200W 0-80A
Internal Fuse Reverse Polarity
General
FCC Part 15 Class B, RoHS 5°F ~ 131°F/ -15°C ~ 55°C -13°F ~ 140°F / -25°C ~
60°C 5% to 95% (three-layer paint protection) 60dB Fans
IP 20 I 16.812.74.9 in / 426322124 mm 23.8 lbs /10.8kg
Non-Lithium Battery Parameters
Battery type
Parameters Overvoltage disconnection voltage
Sealed lead acid battery
(SLD)
60V
Colloidal lead acid battery
(GEL)
60V
Vented lead acid battery
(FLD)
60V
User-defined (User)
3660V
Equalizing charge voltage
58.4V
56.8V
59.2V
3660V
Boost charge voltage Floating charge voltage Undervoltage alarm voltage Low voltage disconnection voltage Discharge limit voltage Over-discharge delay time Equalizing charge duration Equalizing charge interval Boost charge duration
57.6V
55.2V
44V
42V
40V
5S 120 minutes 30 days 120 minutes
56.8V 55.2V 44V 42V 40V
5S 120 minutes
58.4V
55.2V
44V
42V
40V
5S 120 minutes 30 days 120 minutes
3660V adjustable)
3660V adjustable)
3660V adjustable)
3660V adjustable)
3660V adjustable)
1~30S adjustable)
0600 minutes adjustable)
0250 days adjustable)
10600 minutes adjustable)
When modifying parameters in User Mode, the following rules must be followed
to set parameters successfully.
1. Overvoltage Disconnect > Overvoltage Disconnect Recover Equalization
voltage Boost voltage Float voltage
2. Overvoltage Disconnect > Over Voltage Disconnect Recover 3. Low Voltage
Disconnect Recover > Low Voltage Disconnect (at least
2V Smaller) < Discharge Limit Voltage 4. Undervoltage Recover > Undervoltage
Alarm
If setting the Low Voltage Disconnect in User Mode, it must always be at least
2V lower than the Low Voltage Disconnect Recovery Voltage
Lithium Battery Parameters
Battery type
Parameters Overvoltage disconnection voltage
Ternary lithium battery (N13)
60V
Ternary lithium battery (N14)
Lithium iron
phosphat e battery
(LF16)
60V
60V
Equalizing charge
53.2V
57.6V
56.8V
voltage
(adjustable) (adjustable) (adjustable)
Lithium iron
phosphat e battery
(LF15)
60V
53.2V (adjustable)
Lithium iron
phosphat e battery
(LF14)
60V
49.2V
User defined (User)
3660V
3660V
Boost charge voltage
53.2V
57.6V
56.8V
53.2V
49.2V
3660V
(adjustable) (adjustable) (adjustable) (adjustable) (adjustable) (adjustable)
Floating charge voltage
53.2V
57.6V
56.8V
53.2V
49.2V
3660V
(adjustable) (adjustable) (adjustable) (adjustable) (adjustable) (adjustable)
Undervoltage alarm 43.6V
46.8V
49.6V
46.4V
43.2V
voltage
(adjustable) (adjustable) (adjustable) (adjustable) (adjustable)
Low voltage disconnection voltage
Discharge limit voltage
38.8V
42V
48.8V
45.6V
42V
(adjustable) (adjustable) (adjustable) (adjustable) (adjustable)
36.4V
39.2V
46.4V
43.6V
40.8V
3660V (adjustable)
3660V (adjustable)
3660V (adjustable)
Over-discharge delay time
30s
30s
30s
30s
30s
1~30s
(adjustable) (adjustable) (adjustable) (adjustable) (adjustable) (adjustable)
Equalizing charge duration
Equalizing charge interval
Boost charge duration
–
–
120 minutes (adjustable)
–
–
120 Minutes (adjustable)
–
–
120 minutes (adjustable)
–
–
120 minutes (adjustable)
–
–
120 minutes (adjustable)
0~600minutes (adjustable)
0~250days (adjustable)
10600 Minutes (adjustable)
When modifying parameters in User Mode or Lithium, the following rules must be
followed to set parameters successfully.
1. Overvoltage Disconnect > Overvoltage Disconnect Recover Equalization
voltage Boost voltage Float voltage
2. Overvoltage Disconnect > Over Voltage Disconnect Recover 3. Low Voltage
Disconnect Recover > Low Voltage Disconnect (at least
2V Smaller) < Discharge Limit Voltage 4. Undervoltage Recover > Undervoltage
Alarm
If setting the Low Voltage Disconnect in User Mode, it must always be at least 2V lower than the Low Voltage Disconnect Recovery Voltage
Charging Parameters Glossary
Overvoltage Disconnect–When and if the charge controller experiences a voltage
higher than what is assigned, it will disconnect itself from the circuit;
ceasing charge.
Overvoltage Recover– in the event a charge controller experiences an over-
voltage condition set by the previous parameter, then this reconnecting
parameter is put into play to direct the controller when it can connect and
safely charge again. Typically over-voltage reconnection is achieved when time
has passed (ex. The sun setting), or when the over-voltage condition is
remedied ultimately reducing the voltage to a user defined charging voltage.
Equalization Voltage– equalization voltage is a corrective over-charge of the
battery. The user should consult their battery manufacturer regarding specific
battery equalization capacity. This parameter sets the equalization voltage to
set the battery at when it reaches the equalization state.
Boost Voltage– users should check with their battery manufacturer for proper
charging parameters. In this stage, users set the boost voltage where the
battery will reach a voltage level and remain there until the battery
undergoes an absorption stage.
Float Voltage– once the charge controller recognizes the set float voltage, it
will commence floating. The battery is supposed to be fully charged in his
state, and the charge current is reduced to maintain battery stability levels.
Undervoltage Recover– deals with the loads connected to the system. When
batteries are determined to be low due to them approaching low voltage
disconnect, then the loads will be shut off to give the batteries time to
recover. This parameter sets the controller to shut off the loads until it can
reach the low voltage reconnect stage.
Undervoltage Alarm– this parameter deals with the batteries themselves
approaching the under-voltage recovery state. The user should minimize loads
before the charge controller approaches a level where it will do this
automatically to protect the battery from discharging.
Low Voltage Recover– parameter allows loads connected to the system will be
able to operate (not fully) again.
Low-voltage disconnect– prevents over-discharge of the batteries by
automatically disconnecting any loads. This extends battery life and is the
precedent to being in an under-voltage state, recovering from the undervoltage
state, and finally reconnecting to normal operational state.
35
Discharging limit Voltage– This parameter ensures that the controller does not
exceed the default or assigned parameter before needing to be charged again.
This is put into play to optimize and extend the battery life by going with a
higher voltage. The lower the discharge limit voltage the more negative effect
on battery efficiency.
This equipment has been tested and found to comply with the limits for a class
B digital device, pursuant to part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses and can radiate radio
frequency energy and if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However,
there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and
on, the user is encouraged to try to correct the interference by one or more
of the following measures:
· Reorient or relocate the receiving antenna. · Increase the separation
between the equipment and receiver. · Connect the equipment into an outlet on
a circuit different from that to which the receiver is connected. · Consult
the dealer or an experienced radio/TV technician for help.
This device complies with Part 15 of the FCC Rules. Operation is subject to
the following two conditions: (1) this device may not cause harmful
interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
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