Growatt Solar Charger 3500 User manual

Installation
&
Operation Manual
No.28 Guangming Road, Shiyan Street, Bao'an District, Shenzhen,P.R.China
+ 86 755 2747 1942
[e-mail]
www.ginverter.com
T
E
W
GR - UM - 141 - A - 00
Installation Manual Of Solar Charger 3500
SHENZHEN GROWATT NEW ENERGY TECHNOLOGY CO.,LTD

Brief Introduction 1.1 Preface
1.2 Target Group
1.3 Product Description
1.4 Basic System Architecture
1.5 Product Overview
Safety Instructions
Installation
3.1 Unpacking and Inspection
3.2 Basic installation requirements
3.3 Solar Charger connection
SC 3500 address
setting
Table of Contents
1
2
3
4
5.1 Power on/off
5.2 Operation and display panel
Specifications
Trouble Shooting
Operation
5
6
7
Manufacturer Warranty
8
Contact
9

1 Brief Introduction
1.1 Preface
This manual describes the assembly, installation, operation and troubleshooting of
Growatt Solar Charger 3500 of (which designed &produced by )GROWATT NEW
ENERGY TECHNOLOGY CO.LTD.SHENZHEN(Short for Growatt New Energy as below).
Please read this manual carefully and put this manual on some place where is conven-
ient to installation, operation, obtain. Any modifications of Growatt New Energy, we
will not notify the user.（please read this manual carefully before installations and
operations ,keep this manual for future reference ).
Only qualified and trained electrical technicians are allowed to install and operate
Solar Charger 3500. Solar Charger 3500 are compatible with lead acid battery. For
lead acid battery, you are easy to find it on the market. However, we strongly
recommend(suggest) you to contact your installer or Growatt customer service hotline
+ 86-0755-27471942/400-931-3122 to confirm before the procedure.
Solar Charger 3500 is a domestic MPPT charger. Mixing with Growatt off line
Inverter SPF3000/5000 which can increase off line system charging current and satisfy
high capacity battery and fast charge need. Each SPF3000/5000 can match 2 pcs Solar
Charger 3500 at most.
Features:
1)Perfect combination with SPF3000/5000.
2)MPPT solar charge controller.
3)Stable and reliable design ,good appearance as well .
4)Over current/Over temperature protection.
5)Smart battery charger design for optimized battery performance.
6)Growatt SPF3000/5000 can support the monitoring system which can collect all the
input、output data that can be used for analyzing.
7)Easy installation and maintenance.
1.3 Product Description
2
1.2 Target Group
1
1.4 Basic System Architecture
As above showing ,the photovoltaic off line system be constituted by 2pcs solar
charger and 1pcs Growatt SPF3000/5000,the function of Solar Charger 3500
is increase photovoltaic energy utilization rate and charging current dramatically so
that can save more energy to Battery. photovoltaic off line system can support various
domestic and office devices including motor load,such as fan and refrigerator.
1.5 Product Overview
Sol ar p ow e r
Sol ar p ow e r
Figure 1.1
Figure 1.2
ABCD
HIJK
EFG

43
Safety Instructions 2
1.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.
2.All the operation and connection please professional electrical or mechanical
engineer.
3.All the electrical installation must comply with the local electrical safety standards
.4.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
5.CAUTION：To reduce risk of injury, charge only deep-cycle lead-acid type
rechargeable battery. Other types of batteries may burst, causing personal injury and
damage.
6.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.
7.To reduce risk of electric shock, disconnect all wirings before attempting any
maintenance or cleaning. Turning off the unit will not reduce this risk.
8.NEVER charge a frozen battery.
9.For optimum operation of this inverter, please follow required spec to select
appropriate cable size. It's very important to correctly operate this inverter.
10.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.
11.GROUNDING INSTRUCTIONS -This Solar Charger 3500 should be connected to a
permanent grounded wiring system. Be sure to comply with local requirements and
regulation to install this Solar Charger 3500.
12.Make sure the Solar Charger 3500 is completely assembled, before the operation.
A
B
C
D
E
F
G
H
I
J
K
Status/ Fault indicator
Solar Charger 1
Solar Charger 2
Address Fault
PVA input
PVB input
Power on/off switch
Battery input
Mode & Address switch
RS485 communication port
Ground (yellow-green)
Position Description
WARNING: This chapter contains important safety and operating
instructions. Read and keep this manual for future reference.

56
3 Installation
3.1 Unpacking and Inspection
3.2 Basic installation requirements
Before installation, please inspect the unit. Be sure that nothing inside the package is
damaged. You should have received the following items inside of package:
The unit x1
User manual x1
1 meter long cable x1
Setscrews x3
1.The installation location must be suitable for Solar Charger 3500 weight for a long
period time.
2.The installation location must conform with dimension of Solar Charger 3500.
3.Do not mount the solar charger on flammable construction material .
4.The Ingress Protection rate is IP20 and the pollution degree is PD2, The install area
shall be generally conditioned in term of temperature, humidity and air filtration.
5.Battery installation option is not far below the position of energy storage machine.
6.The humidity of the installation location should be 5 ~ 85%.
7.The ambient temperature should be 0℃~55℃ .
8.Solar Charger 3500 can be installed in vertical or lean back on plane, Please refer to
the below Installation position shall not prevent access to the disconnection means.
Figure 3.1
9.In order to ensure machine can run normally and easy to operate, please pay
attention to provide adequate space for Solar Charger 3500. Please refer to below:
Figure 3.2
10.Do not install the machine near television antenna or any other antennas and
antenna cables.
11.Don't install the machine in the living area.
12.Be sure that the machine is out of the children's reach.
13.Install the unit by screwing three crews as below. It's recommended to use M6
screws.
Figure 3.3

78
3.3 Solar Charger connection
3.3.1Battery connection
User can choose proper capacity lead acid battery with a nominal voltage at 48V.
CAUTION: For safety operation and regulation compliance, it's requested to install a
separate DC over-current protector or disconnect device between battery and Solar
Charger 3500. It may not be requested to have a disconnect device in some applic-
ations, however, it's still requested to have over-current protection installed.
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 battery connection. To reduce risk of injury, please use the
proper recommended cable and terminal size as below.
Ring terminal:
Figure 3.5
Note: for lead acid battery, the recommended charge current is 0.2C(C-battery capacity)
Please follow below steps to implement lead-acid 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 350Ah
capacity battery for Solar Charger 3500.
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.
Figure 3.4
Recommended battery cable and terminal size:
Model
Max.
charging
Current
Capaci
ty
Diamete
r
Dimension（mm）
Torque
Cross-
section
Inner
diameter
Length
Solar
Charger
3500
70A
350AH
1*8AW
G
8
6.4
23.8
2-3Nm
Table 3.1

9
3.3.2 RS485 connection
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
Solar Charger 3500 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 (-).
Figure 3.6
Table 3.2
Solar Charger 3500 has two parallel RS485 ports which can connect with Growatt
SPF3000/5000 and another Solar Charger 3500 by “hand by hand ”type.
One of 485ports connect with Growatt SPF3000/5000 and another one connect
with Solar Charger3500.
Figure 3.7
3.3.3 PE connection
→Ground (yellow-green)
With the 12 line and M5 terminals connected, and then a screwdriver to lock the
ground, as shown below.
WARNING: Shock Hazard
PE earth must be connected to ensure personal safety
Table 3.3
Figure 3.8
10

12
11
3.3.4 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's 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.
Table 3.4
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.
Model
Max. PV array open circuit voltage
PV array MPPT voltage range
Min. battery voltage for PV charge
Table 3.5
Please follow below steps to implement PV input connection:
1.Remove insulation sleeve 10 mm for positive and negative conductors.
Figure 3.9
3.Make sure the wires are securely connected.
3.3.5 Finally assemble
After connecting all wirings, please put bottom cover back by screwing two screws
as shown below:
Figure 3.11
Model
Max charging current per string
Diameter
Torque
Solar Charger
3500
35A 1*10AWG 1.2-1.6Nm
Solar Charger 3500
145Vdc
60~115Vdc
36Vdc
Figure 3.10
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.
There're two pairs of string for PV SC3500.

13 14
4 SC3500 address setting
Figure 4.1
Figure 4.2
Operation 5
5.1.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.
Figure 5.1
5.2.Operation and display panel
Figure 5.2
LED indicator:
LED
LED status
Description
Add01
ON
Solar Charger 3500 slave 1
Add02
ON
Solar Charger 3500 slave 2
Add fault
ON
Solar Charger 3500 address fault
As below showing ,the left DIP need to turn to 'PAR' when Solar Charger 3500 mix with
Growatt SPF3000/5000.
The Solar Charger 3500 is working as slave charger of Growatt SPF3000/5000.the
panels energy priority from high to low is : Growatt SPF3000/5000,slave 1(charger 1),
slave 2(charger 2).
The right DIP can set the charger address ,turn to “Add01”means charger 1.
“Add02”means charger 2.
WARNING:
If you installed 2pcs Solar Charger 3500, The address DIP should be
different ,otherwise the system would not working .
Table 4.1
Kindly reminder :for insuring the lowest consumption in the night ,we suggest
turning off the starting up switch when system working on normal mode.

15 16
Buzzer:
Status
Description
Beeps every 3 seconds
Warning : Warning, but still working
Beeps constantly
Error: Solar Charger stop work
Table 5.2
Normal/ Fault
GREEN ON
Charge
Normal/ Fault
GREEN flash
Standby/ Flash
Normal/ Fault
RED flash
Warning : Warning, but still working
Normal/ Fault
RED ON
Error: Solar Charger stop work
Table 5.1
Setting and checking:
After pressing and holding ENTER button for 3 seconds, the unit will enter setting
mode. Press “UP” or “DOWN” button to select setting programs. And then, press
“ENTER” button to confirm the selection or ESC button to exit.
main menu
submenu
description
SolarCharge
Para
ON
OPEN Solar Charger
OFF (default)
Close Solar Charger
Buzzer
ON/OFF
ON (default)
Alarm on.
OFF
Alarm off.
Max charge
Current
xxxA
(default
70A)
If battery type is selected as lead acid battery,
this program can be set up.
Each solar charger can provide up to 70A
charging current
Bulk charge
Volt.
xx.xV
(default
56.4V)
If battery type is selected as “self-defined
Lead_Acid”, this program can be set up.
Setting range is from 50.0V to 57.4V.
Float charge
Volt.
xx.xV
(default
54V)
If battery type is selected as “self-defined
Lead_Acid”, this program can be set up.
Setting range is from 50~56V.
Table 5.3
main menu
submenu
description
Solar
Charger 1
Epv_a: xx.xkwh
Solar Charger 1's Total PV generation
Epv_d: xx.xkwh
Solar Charger 1's Daily PV generation
Ppv: xxxx/xxxxw
Solar Charger 1's power: PVA charge
power/ PVB charge power
Ic_pv:xx.x/xx.x
A
Solar Charger 1's charge current: PVA
charge current/ PVB charge current
Vpv:xxx/xxxV
Solar Charger 1's PV voltage:PVA
voltage/PVB voltage
Solar
Charger 2
Epv_a: xx.xkwh
Solar Charger 2's Total PV generation
Epv_d: xx.xkwh
Solar Charger 2's Daily PV generation
Ppv: xxxx/xxxxw
Solar Charger 2's power: PVA charge
power/PVB charge power
Ic_pv:xx.x/xx.x
A
Solar Charger 2's charge current: PVA
charge current/PVB charge current
Vpv:xxx/xxxV
Solar Charger 2's PV voltage:PVA
voltage/PVB voltage
Table 5.4
Error code
Descrption
Bat voltage high
Battery voltage is high
Over Temperature
Over temperature
Error: 103
Buck over current
Error description:
Table 5.5