Growatt SPF 5000 ES User manual

Off Grid Solar Inverter
SPF 5000 ES
Version: 1.0
User Manual

Table Of Contents
Information on this Manual............................................................................................................................1
Validity ......................................................................................................................................................1
Scope.........................................................................................................................................................1
Target Group .............................................................................................................................................1
Safety Instructions ...................................................................................................................................1
Introduction ...................................................................................................................................................2
Features ....................................................................................................................................................2
Product Overview......................................................................................................................................3
Installation .....................................................................................................................................................4
Unpacking and Inspection ........................................................................................................................4
Mounting the Unit .....................................................................................................................................4
Battery Connection ...................................................................................................................................5
Lead-acid Battery Connection ...............................................................................................................5
Lithium Battery Connection...................................................................................................................6
AC Input/Output Connection..................................................................................................................10
PV Connection .........................................................................................................................................11
Communication Connection ....................................................................................................................12
Dry Contact Signal ..................................................................................................................................12
Operation......................................................................................................................................................13
Power ON/OFF ........................................................................................................................................13
Operation and Display Panel...................................................................................................................13
LCD Display Icons ................................................................................................................................14
LCD Setting ..........................................................................................................................................16
Display Information ................................................................................................................................21
Operating Mode Description ...................................................................................................................22
Parallel Installation Guide............................................................................................................................23
Introduction ............................................................................................................................................23
Parallel Board Installation ......................................................................................................................23
Parallel Operation in Single Phase..........................................................................................................26
Parallel Operation in Three Phase...........................................................................................................29
PV Connection .........................................................................................................................................32
LCD Setting and Display..........................................................................................................................32
Fault Reference Code ...................................................................................................................................34
Warning Indicator ........................................................................................................................................34
Battery Equalization .....................................................................................................................................36
Specifications ...............................................................................................................................................37
Trouble Shooting ..........................................................................................................................................40

1
Information on this Manual
Validity
This manual is valid for the following devices:
SPF 5000 ES
Scope
This manual describes the assembly, installation, operation and troubleshooting of this unit. Please read
this manual carefully before installations and operations.
Target Group
This document is intended for qualified persons and end users. Tasks that do not require any particular
qualification can also be performed by end users. Qualified persons must have the following skills:
Knowledge of how an inverter works and is operated
Training in how to deal with the dangers and risks associated with installing and using electrical
devices and installations
Training in the installation and commissioning of electrical devices and installations
Knowledge of the applicable standards and directives
Knowledge of and compliance with this document and all safety information
Safety Instructions
WARNING: This chapter contains important safety and operating instructions.
Read and keep this manual for future reference.
1. Please be clear which kind of battery system you want, lithium battery system or lead-acid battery system, if
you choose the wrong system, energy storage system can’t work normally.
2. Before using the unit, read all instructions and cautionary marking on the unit, the batteries and all
appropriate sections of this manual. The company has the right not to quality assurance, if not according to
the instructions of this manual for installation and cause equipment damage.
3. All the operation and connection please professional electrical or mechanical engineer.
4. All the electrical installation must comply with the local electrical safety standards.
5. When install PV modules in the daytime, installer should cover the PV modules by opaque materials,
otherwise it will be dangerous as high terminal voltage of modules in the sunshine.
6. CAUTION-To reduce risk of injury, charge only deep-cycle lead-acid type rechargeable batteries and
lithium batteries. Other types of batteries may burst, causing personal injury and damage.
7. Do not disassemble the unit. Take it to a qualified service center when service or repair is required.
Incorrect re-assembly may result in a risk of electric shock or fire.
8. To reduce risk of electric shock, disconnect all wirings before attempting any maintenance or cleaning.
Turning off the unit will not reduce this risk.
9. NEVER charge a frozen battery.
10. For optimum operation of this inverter, please follow required spec to select appropriate cable size. It’s very
important to correctly operate this inverter.
11. Be very cautious when working with metal tools on or around batteries. A potential risk exists to drop a tool
to spark or short circuit batteries or other electrical parts and could cause an explosion.
12. Please strictly follow installation procedure when you want to disconnect AC or DC terminals. Please refer to
INSTALLATION section of this manual for the details.
13. GROUNDING INSTRUCTIONS -This inverter should be connected to a permanent grounded wiring system.
Be sure to comply with local requirements and regulation to install this inverter.
14. NEVER cause AC output and DC input short circuited. Do NOT connect to the mains when DC input short
circuits.
15. Make sure the inverter is completely assembled, before the operation.

2
Introduction
Hybrid Power System
This is a multifunctional off grid solar inverter, integrated with a MPPT solar charge controller, a high
frequency pure sine wave inverter and a UPS function module in one machine, which is perfect for off grid
backup power and self-consumption applications. This inverter can work with or without batteries.
The whole system also need other devices to achieve complete running such as PV modules, generator, or
utility grid. Please consult with your system integrator for other possible system architectures depending on
your requirements. The WiFi / GPRS module is a plug-and-play monitoring device to be installed on the
inverter. With this device, users can monitor the status of the PV system from the mobile phone or from the
website anytime anywhere.
Features
Rated power 5KW, power factor 1
MPPT ranges 120V~430V, 450Voc
High frequency inverter with small size and light weight
Pure sine wave AC output
Solar and utility grid can power loads at the same time
With CAN/RS485 for BMS communication
With the ability to work without battery
Parallel operation up to 6 unit
WIFI/ GPRS remote monitoring (optional)

3
Product Overview
1. LCD display
2. Status indicator
3. Charging indicator
4. Fault indicator
5. Function buttons
6. AC input
7. WiFi/GPRS communication port
8. USB communication port
9. CAN communication Port
10. RS485 communication Port
11. Dry contact
12. PV input
13. Power on/off switch
14. Battery input
15. Parallel communication ports
16. Current sharing ports
17. AC output
18. Circuit breaker

4
Installation
Unpacking and Inspection
Before installation, please inspect the unit. Be sure that nothing inside the package is damaged. You should
have received the following items in the package:
The unit x 1
User manual x 1
Communication cable x 1
Software CD x 1
Current sharing cable x 1
Parallel communication cable x 1
Preparation
Before connecting all wiring, please take off bottom cover by removing two screws as shown below.
Mounting the Unit
Consider the following points before selecting where to install:
Do not mount the inverter on flammable construction materials.
Mount on a solid surface
Install this inverter at eye level in order to allow the LCD display
to be read at all times.
The ambient temperature should be between 0°C and 55°C to
ensure optimal operation.
The recommended installation position is to be adhered to the
wall vertically.
Be sure to keep other objects and surfaces as shown in the right
diagram to guarantee sufficient heat dissipation and to have
enough space for removing wires.
SUITABLE FOR MOUNTING ON CONCRETE OR
OTHER NON-COMBUSTIBLE SURFACE ONLY.
Install the unit by screwing three screws.
It’s recommended to use M4 or M5 screws.

5
Battery Connection
Lead-acid Battery Connection
User can choose proper capacity lead acid battery with a nominal voltage at 48V. Also, you need to choose
battery type as “AGM(default) or FLD”
CAUTION: For safety operation and regulation compliance, it’s requested to install a separate DC over-current
protector or disconnect device between battery and inverter. It may not be requested to have a disconnect
device in some applications, however, it’s still requested to have over-current protection installed. Please refer
to typical amperage in below table as required fuse or breaker size. Ring terminal:
WARNING! All wiring must be performed by a qualified person.
WARNING! It's very important for system safety and efficient operation to use
appropriate cable for battery connection. To reduce risk of injury, please use the
proper recommended cable and terminal size as below.
Recommended battery cable and terminal size:
Model
Wire Size
Cable (mm2)
Torque value（max）
SPF 5000 ES
1 x 2AWG
35
2 Nm
Note: for lead acid battery, the recommended charge current is 0.2C(Cbattery capacity)
Please follow below steps to implement battery connection:
1. Assemble battery ring terminal based on recommended battery cable and terminal size.
2. Connect all battery packs as units requires. It’s suggested to connect at least 200Ah capacity battery for
SPF 5000 ES.
3. Insert the ring terminal of battery cable flatly into battery connector of inverter and make sure the bolts are
tightened with torque of 2Nm. Make sure polarity at both the battery and the inverter/charge is correctly
connected and ring terminals are tightly screwed to the battery terminals.
WARNING: Shock Hazard
Installation must be performed with care due to high battery voltage in series.
CAUTION!! Do not place anything between the flat part of the inverter terminal and the ring
terminal. Otherwise, overheating may occur.
CAUTION!! Do not apply anti-oxidant substance on the terminals before terminals are
connected tightly.
CAUTION!! Before making the final DC connection or closing DC breaker/disconnector, be sure
positive (+) must be connected to positive (+) and negative (-) must be connected to negative
(-).

6
Lithium Battery Connection
If choosing lithium battery for SPF 5000 ES, you are allowed to use the lithium battery only which we have configured.
There're two connectors on the lithium battery, RJ45 port of BMS and power cable.
Please follow below steps to implement lithium battery connection:
1. Assemble battery ring terminal based on recommended battery cable and terminal size (same as Lead acid, see
section Lead-acid Battery connection for details) .
2. Insert the ring terminal of battery cable flatly into battery connector of inverter and make sure the bolts are
tightened with torque of 2-3Nm. Make sure polarity at both the battery and the inverter/charge is correctly connected
and ring terminals are tightly screwed to the battery terminals.
3. Connect the end of RJ45 of battery to BMS communication port(RS485 or CAN) of inverter.
4. The other end of RJ45 insert to battery communication port(RS485 or CAN).
Note: if choosing lithium battery, make sure to connect the BMS communication cable between the battery and the
inverter. You need to choose battery type as “lithium battery”.
Lithium battery communication and setting
In order to communicate with battery BMS, you should set the battery type to “LI” in Program 5. Then the LCD will
switch to Program 36, which is to set the protocol type. There are several protocols in the inverter. Please get
instruction from Growatt to choose which protocol to match the BMS.
1. Connect the end of RJ45 of battery to BMS communication port of inverter
Make sure the lithium battery BMS port connects to the inverter is Pin to Pin, the inverter BMS port pin assignment
shown as below:
Pin number
RS485 port
CAN port
1
RS485B
--
2
RS485A
--
3
--
--
4
--
CANH
5
--
CANL
6
--
--
7
--
--
8
--
--

7
LCD setting
To connect battery BMS, need to set the battery type as “LI” in Program 05.
After set “LI” in Program 05, it will switch to Program 36 to choose communication type. There will be 2 options
under Program 36, first is the SCI communication type, and here will be 15 options(L01, L02…L15) under it; Second
is the CAN communication type, and here will be another 15 options(L51, L52…L65) under it.
Note: you can only use one communication type RS485 or CAN in a time
05
Battery type
AGM (default)
Flooded
Lithium (only suitable when communicated with BMS)
User-Defined
If “User-Defined” is selected, battery charge voltage and low DC
cut-off voltage can be set up in program 19, 20 and 21.
User-Defined 2（suitable when lithium battery without BMS
communication）
If “User-Defined 2” is selected, battery charge voltage and low DC
cut-off voltage can be set up in program 19, 20 and 21. It is
recommended to set to the same voltage in program 19 and
20(full charging voltage point of lithium battery). The inverter will
stop charging when the battery voltage reach this setting.
36
RS485 communication type
Protocol 1
Protocol 2
.
.
.
.
.
.
Protocol 15

8
CAN communication type
Protocol 51
Protocol 52
.
.
.
.
.
.
Protocol 65
Note: when the battery type set to Li, the setting option 12, 13, 21 will change to display percent.
Note: when the battery type set as “LI”, the Maximum charge current can't be modified by the user. When the
communication fail, the inverter will cut off output.
Note: any questions about communicating with BMS, please consult with Growatt.
12
Setting SOC point back to
utility source when selecting
“SBU priority” or “Solar first”
in program 01
Default 50%, 20%~50% Settable
13
Setting SOC point back to
battery mode when selecting
“SBU priority” or “Solar first”
in program 01
Default 95%, 60%~100% Settable
21
Low DC cut-off SOC
If “LI”is selected in program 5,
this program can be set up
Default 20%, 5%~30% Settable

9
Communicating with battery BMS in parallel system
If need to use communicate with BMS in a parallel system, an external RS485/CAN HUB is needed to converge the
communication cables from the parallel inverters to lithium battery.
RS485/CAN Hub:
Two inverters in parallel:
Six inverters in parallel:
Note: if inverters parallel as 3 phase system, only need to connect L1-Phase inverters with lithium battery RJ45 port to
communicate with BMS. When inverters on L1-Phase are more than 2 units, it would need an extra RS485/CAN HUB to
converge inverters on L1-Phase to connect with battery RJ45 port to communicate with BMS.
Note: the above diagrams described the parallel system communicate with lithium battery in CAN communication type,
and it is the same to the RS485 communication type.

10
AC Input/Output Connection
CAUTION!! Before connecting to AC input power source, please install a separate AC breaker between
inverter and AC input power source. This will ensure the inverter can be securely disconnected during
maintenance and fully protected from over current of AC input. The recommended spec of AC breaker is 32A
50A for SPF 5000 ES.
CAUTION!! There are two terminal blocks with “IN” and “OUT” markings. Please do NOT mis-connect input
and output connectors.
WARNING! All wiring must be performed by a qualified personnel.
WARNING! It’s very important for system safety and efficient operation to use appropriate cable for AC input
connection. To reduce risk of injury, please use the proper recommended cable size as below.
Suggested cable requirement for AC wires
Model
Gauge
Cable (mm2)
Torque Value
SPF 5000 ES
10 AWG
6
1.2 Nm
Please follow below steps to implement AC input/output connection:
1. Before making AC input/output connection, be sure to open DC protector or disconnector first.
2. Remove insulation sleeve 10mm for six conductors. And shorten phase L and neutral conductor N 3 mm.
3. Insert AC input wires according to polarities indicated on terminal block and tighten the terminal screws. Be
sure to connect PE protective conductor first.
→Ground (yellow-green)
L→LINE (brown or black)
N→Neutral (blue)
WARNING:
Be sure that AC power source is disconnected before attempting to hardwire it to the unit.
4. Then, insert AC output wires according to polarities indicated on terminal block and tighten terminal screws.
Be sure to connect PE protective conductor first.
→Ground (yellow-green)
L→LINE (brown or black)
N→Neutral (blue)
5. Make sure the wires are securely connected.
CAUTION: Important
Be sure to connect AC wires with correct polarity. If L and N wires are connected reversely, it may cause utility
short-circuited when these inverters are worked in parallel operation.

11
PV Connection
CAUTION: Before connecting to PV modules, please install separately a DC circuit breaker between inverter
and PV modules.
WARNING! All wiring must be performed by a qualified personnel.
WARNING! It'’ very important for system safety and efficient operation to use appropriate cable for PV module
connection. To reduce risk of injury, please use the proper recommended cable size as below.
Model
Wire Size
Cable (mm2)
Torque value（max）
SPF 5000 ES
1 x 12AWG
4
1.2 Nm
PV Module Selection:
When selecting proper PV modules, please be sure to consider below parameters:
1. Open circuit Voltage (Voc) of PV modules not exceeds max. PV array open circuit voltage of inverter.
2. Open circuit Voltage (Voc) of PV modules should be higher than min. battery voltage.
Please follow below steps to implement PV module connection:
1. Remove insulation sleeve 10 mm for positive and negative conductors.
2. Check correct polarity of connection cable from PV modules and PV input
connectors. Then, connect positive pole (+) of connection cable to positive
pole (+) of PV input connector. Connect negative pole (-) of connection
cable to negative pole (-) of PV input connector.
3. Make sure the wires are securely connected.
Final Assembly
After connecting all wiring, please put bottom cover back by screwing
two screws as shown below.
INVERTER MODEL
SPF 5000 ES
Max. PV Array Open Circuit Voltage
450Vdc
PV Array MPPT Voltage Range
120Vdc~430Vdc
CAUTION: Appliances such as air conditioner are required at least 2~3 minutes to restart because it’s
required to have enough time to balance refrigerant gas inside of circuits. If a power shortage occurs and
recovers in a short time, it will cause damage to your connected appliances. To prevent this kind of damage,
please check with manufacturer of air conditioner that if it’s equipped with time-delay function before
installation. Otherwise, this off grid solar inverter will trigger overload fault and cut off output to protect your
appliance but sometimes it still causes internal damage to the air conditioner.

12
Communication Connection
Please use supplied communication cable to connect to inverter and PC. Insert bundled CD into a computer and
follow on-screen instruction to install the monitoring software. For the detailed software operation, please
check user manual of software inside of CD.
Dry Contact Signal
There is one dry contact available on the rear panel. When program 24 is set as “disable”, it could be used to
deliver signal to external device when battery voltage reaches warning level. When program 24 is set as
“enable” and the unit is working in battery mode, it could be used to trigger the grounding box to connect
neutral and grounding of AC output together.
When program 24 is set as “disable” (default setting):
Unit Status
Condition
Dry contact port:
NC & C
NO & C
Power Off
Unit is off and no output is powered.
Close
Open
Power On
Output is powered from Utility.
Close
Open
Output is
powered
from
Battery or
Solar.
Program 01
set as Utility
Battery voltage < Low DC warning
voltage
Open
Close
Battery voltage > Setting value in
Program 13 or battery charging
reaches floating stage
Close
Open
Program 01
is set as
SBU or
Solar first
Battery voltage < Setting value in
Program 12
Open
Close
Battery voltage > Setting value in
Program 13 or battery charging
reaches floating stage
Close
Open
When program 24 is set as “enable”:
Unit Status
Condition
Dry contact port:
NC & C
NO & C
Power Off
Unit is off and no output is powered.
Close
Open
Power On
Unit works in standby mode, line mode or fault mode
Close
Open
Unit works in battery mode or power saving mode
Open
Close

13
Operation
Power ON/OFF
Once the unit has been properly installed and the batteries are connected well, simply press On/Off switch
(located on the button of the case) to turn on the unit.
Operation and Display Panel
The operation and display panel, shown in below chart, is on the front panel of the inverter. It includes
three indicators, four function keys and a LCD display, indicating the operating status and input/output
power information.
1. LCD display
2. Status indicator
3. Charging indicator
4. Fault indicator
5. Function buttons
LED Indicator
LED Indicator
Messages
Green
Solid On
Output is powered by utility in Line mode.
Flashing
Output is powered by battery or PV in battery mode.
Green
Solid On
Battery is fully charged.
Flashing
Battery is charging.
Red
Solid On
Fault occurs in the inverter.
Flashing
Warning condition occurs in the inverter.
Function Buttons
Button
Description
ESC
To exit setting mode
UP
To go to previous selection
DOWN
To go to next selection
ENTER
To confirm the selection in setting mode or enter setting mode

14
LCD Display Icons
Icon
Description
AC Input Information
AC input icon
Indicate AC input power, AC input voltage, AC input frequency, AC input
current
Indicate AC power loads in bypass
PV Input Information
PV input icon
Indicate PV power, PV voltage, PV current, etc
Output Information
Inverter icon
Indicate output voltage, output current, output frequency, inverter
temperature
Load Information
Load icon
Indicate power of load, power percentage of load
Indicate overload happened
Indicate short circuit happened
Battery Information
Indicate battery level by 0-24%, 25-49%, 50-74% and 75-100% in battery
mode and charging status in line mode.
Indicate battery voltage, battery percentage, battery current
Indicate SLA battery
Indicate lithium battery
Indicate charging source priority: solar first, solar and utility, or only solar
Other Information
Indicate output source priority: solar first, utility first, SBU mode or SUB mode
Indicate warning code or fault code
Indicate a warning or a fault is happening
Indicate it’s during setting values
Indicate the alarm is disabled

15
In battery mode, battery icon will present Battery Capacity
Load Percentage
Battery Voltage
LCD Display
Load >50%
< 1.717V/cell
1.717V/cell ~ 1.8V/cell
1.8 ~ 1.883V/cell
> 1.883 V/cell
50%> Load > 20%
< 1.817V/cell
1.817V/cell ~ 1.9V/cell
1.9 ~ 1.983V/cell
> 1.983
Load < 20%
< 1.867V/cell
1.867V/cell ~ 1.95V/cell
1.95 ~ 2.033V/cell
> 2.033
In AC mode, battery icon will present Battery Charging Status
Status
Battery voltage
LCD Display
Constant Current
mode / Constant
Voltage mode
<2V/cell
4 bars will flash in turns.
2 ~ 2.083V/cell
Bottom bar will be on and the other three bars
will flash in turns.
2.083 ~ 2.167V/cell
Bottom two bars will be on and the other two bars
will flash in turns.
> 2.167 V/cell
Bottom three bars will be on and the top
bar will flash.
Floating mode. Batteries are fully charged.
4 bars will be on.

16
LCD Setting
After pressing and holding ENTER button for 3 seconds, the unit will enter setting mode. Press “UP” or “DOWN”
button to select setting programs. Then press “ENTER” button to confirm the selection or ESC button to exit.
Program
Description
Setting Option
01
Output source priority: To
configure load power
source priority
Solar first
Solar energy provides power to the loads as first priority.
If solar energy is not sufficient 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 either low-level warning voltage or the setting
point in program 12.
Utility first (default)
Utility will provide power to the loads as first priority.
Solar and battery energy will provide power to the loads only when
utility power is not available.
SBU priority
Solar energy provides power to the loads as first priority.
If solar energy is not sufficient to power all connected loads, battery will
supply power to the loads at the same time.
Utility provides power to the loads only when battery voltage drops to
either low-level warning voltage or the setting point in program 12.
SUB priority
Solar energy provides power to the loads as first priority.
If solar energy is not sufficient to power all connected loads, solar and
utility will power loads at the same time.
Battery provides power to the loads only when solar energy is not
sufficient and there is no utility.
02
Maximum charging current:
set total charging current for
solar and utility chargers.
(Max. charging current =
utility charging current +
solar charging current)
Default 60A, 10A~100A Settable
03
AC input voltage range
Appliance (default)
If selected, acceptable AC input voltage range will be within 90~280VAC
UPS
If selected, acceptable AC input voltage range will be within 170~280VAC
Generator
If selected, acceptable AC input voltage range will be within 90~280VAC
In this mode, the MAX. charging current is 30A

17
04
Power saving mode
enable/disable
Saving mode disable (default)
If disabled, no matter connected load is low or high, the on/off status of
inverter output will not be effected.
Saving mode enable
If enabled, the output of inverter will be off when connected load is pretty
low or not detected.
05
Battery type
AGM (default)
Flooded
Lithium (only suitable when communicated with BMS)
User-Defined
If “User-Defined” is selected, battery charge voltage and low DC cut-off
voltage can be set up in program 19, 20 and 21.
User-Defined 2（suitable when lithium battery without BMS
communication）
If “User-Defined 2” is selected, battery charge voltage and low DC cut-off
voltage can be set up in program 19, 20 and 21. It is recommended to set to
the same voltage in program 19 and 20(full charging voltage point of lithium
battery). The inverter will stop charging when the battery voltage reach this
setting.
06
Auto restart when overload
occurs
Restart disable (default)
Restart enable
07
Auto restart when over
temperature occurs
Restart disable (default)
Restart enable
08
Output voltage
*This setting is only
available when the inverter
is in standby mode (Switch
off).
230V (default)
220V
240V
208V
09
Output frequency
*This setting is only
available when the inverter
is in standby mode (Switch
off).
50Hz (default)
60Hz
10
Number of series
batteries connected
(e.g. Showing batteries are connected in 4 series)

18
11
Maximum utility charging
current
Note: If setting value in
Program 02 is smaller
than that in Program 11,
the inverter will apply
charging current from
Program 02 for utility
charger
Default 30A, 10A~80A Settable
12
Setting voltage point back
to utility source when
selecting “SBU priority” or
“Solar first” in program 01
Default 46.0V, 44.0V~51.2V Settable
13
Setting voltage point back
to battery mode when
selecting “SBU priority”
or “Solar first” in program
01
Default 54.0V, 48.0V~58.0V Settable
14
Charger source priority:
To configure charger
source priority
If this off grid solar inverter is working in Line, Standby or Fault mode,
charger source can be programmed as below:
Solar first
Solar energy will charge battery as
first priority.
Utility will charge battery only when
solar energy is not available.
Solar and Utility
Solar energy and utility will both
charge battery.
Only Solar
Solar energy will be the only charger
source no matter utility is available
or not.
If this off grid solar inverter is working in Battery mode or Power saving
mode, only solar energy can charge battery. Solar energy will charge battery
if it's available and sufficient.
15
Alarm control
Alarm on (default)
Alarm off
16
Backlight control
Backlight on (default)
Backlight off
17
Beeps while primary
source is interrupted
Alarm on (default)
Alarm off
18
Overload bypass:
When enabled, the unit
will transfer to line mode
if overload occurs in
battery mode.
Bypass disable (default)
Bypass enable
19
Bulk charging voltage (C.V
voltage). If self-defined is
selected in program 5, this
program can be set up
Default 56.4V, 48.0V~58.4V Settable