Renogy RIV4835CSH1S User manual

Version 1.0
48V Pure Sine Wave Solar Inverter & Charger
SOLAR
INVERTER CHARGER
3500w

01
Important Safety Instructions
Please save these instructions.
This manual contains all safety, installation and operating instructions for the Solar Inverter
Charger. The following symbols are used throughout the manual:
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.
Installation and wiring must comply with the Local and National Electric Codes (NEC) and
must be done by a certified technician.
Read all of the instructions and cautions in the manual before beginning the installation.
There are no serviceable parts for this inverter. Do NOT disassemble or attempt to repair
the inverter.
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.
Indicates a potentially dangerous condition. Use extreme caution
when performing this task.
Indicates a critical procedure for safe and proper operation of the
inverter.
Indicates a procedure or function that is important to the safe and
proper operation of the inverter.
NOTE
CAUTION
WARNING
General Safety Information
Installing breakers or fuses outside of the unit is recommended.
After installation, check that all line connections are tight and secured.
DO NOT parallel this device with other AC input sources to avoid damage.

02
Do NOT let the positive (+) and negative (-) terminals of the battery touch each other.
Use only sealed lead-acid, AGM, flooded, or gel batteries which must be deep cycle.
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.
Battery 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.
Installation Safety

03
Table of Contents
Important Safety Instructions
General Information
Key Features
Battery Charging Modes
Load Output Working Modes
Product Overview
Dimensions
Optional Components
Installation
Location Recommendations
Wiring
Battery Wiring
PV Wiring
AC Output Wiring
AC Input Wiring
Communication Ports
Dry Contacts
RS485
CAN
USB
Operation
LCD Operation
LCD Menu Screens
LCD Programmable Features
Electronic Protections
Fault Codes
Maintenance
Technical Specifications
Non-Lithium Battery Parameters
Lithium Battery Parameters
Charging Parameters Glossary
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General Information
Key Features
04
The new all-in-one Renogy Solar Inverter Charger is an advanced hybrid system combining
the advanced charging algorithm of solar and industrial reliability and electrical energy of
pure sine wave inverters to give you a complete power system. The unit features 4 charging
modes and 3 output modes to meet an array of application needs. Utilizing the latest MPPT
tracking technology, the solar charging module can quickly track the maximum power point
of the photovoltaic array in any environment, capturing the maximum energy of solar panels
in real time. The AC-DC charging module adopts an advanced control algorithm resulting in
a powerful battery charger. The DC-AC inverter module is based on an all-digital intelligent
design, using advanced SPWM technology to output pure sine wave converting direct
current into alternating current, suitable for ac loads such as household appliances, power
tools, and industrial equipment.The product adopts a segment LCD display design, which
displays the operating data and operating status of the system. Lastly, the solar inverter
charger has comprehensive electronic protections to ensure that the entire system is more
secure and stable.
Complete electronic protection including: short-circuit protection, over-voltage protection,
overload protection and more!
Powerful bypass function with uninterrupted power supply function.
4 charging modes: PV Priority, Utility Priority, Hybrid Charging, Only Solar.
State-of-the-art MPPT technology with efficiency of up to 99.9%.
Dynamic LCD display and intelligent LEDs providing important system information.
Manual ON/OFF switch controlling AC output.
Power saving mode function, reduce empty load loss.
Adjustable fan, efficient heat dissipation, extending the life of the system.
Supports lead-acid battery and lithium battery types.

Battery Charging Modes:
05
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 working 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.
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.
PV
UTILITY
48V Battery Storage
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.
CHARGINGCHARGING

06
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.
CHARGINGCHARGING
CHARGINGCHARGING
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.
CHARGING
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.

07
Load Output Working Modes
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.
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.
CHARGING
CHARGING
CHARGING
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.

08
Product Overview
Key Parts
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1
Identification of Parts
1. LCD Buttons
2. LCD Screen
3. LED Indicators
4. AC Input Breaker
5. Dry Contact Port
6. RS485/CAN Communication Port
7. USB Debugging Port (Internal Use)
8. AC Input Terminal
9. AC Output Terminal
10. Cooling Fans
11. PV Input Terminal
12. Main On/Off Power Switch
13. Battery Input Terminal
14. Grounding Lug

09
Dimensions
124mm322mm 6mm
426mm 16.8in
12.7in
φ0.2in
φ0.4in
0.2in 4.9in
Optional Components
φ6mm
φ11mm
The BT-2 Bluetooth module is a great addition to any Renogy charge
controllers with a RS485 port and is used to pair charge controllers with the
Renogy BT App. After pairing is done you can monitor your system and
change parameters directly from you cell phone or tablet. No more
wondering how your system is performing, now you can see performance
in real time without the need of checking on the controller’s LCD.
Renogy BT-2 Bluetooth Module:

10
Please read this manual carefully and familiarize yourself with the installation procedures
before installation.
Indicates a potentially dangerous condition. Use extreme caution
when performing this task.
Indicates a critical procedure for safe and proper operation of the
inverter.
Indicates a procedure or function that is important to the safe and
proper operation of the inverter.
NOTE
CAUTION
WARNING
Installation
Never install the inverter in a sealed enclosure with flooded batteries. Gas can
accumulate and there is a risk of explosion.
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.
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.
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.
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.
Location Recommendations
Ensure installation follows the following guidelines:
WARNING
WARNING
1.
2.
3.
4.
5.
Do not install the inverter in the same compartment as the battery bank
because it could serve as a potential fire hazard.

11
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.
Please Note: While the Solar inverter has fans for cooling, this installation location optimal for
natural convection cooling will improve the overall efficiency .
Avoid placing metal objects near the battery to prevent short circuits in the battery.
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
Acid gas may be generated when the battery is charged so ensure good ventilation around
the environment.
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.
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.
Do not install the solar inverter in harsh environments such as damp, greasy, flammable and
explosive areas or where dust accumulation is high.
Other Precautions:
8inches / 200mm
8inches / 200mm
8inches
200mm
8inches
200mm

12
Wiring
NOTE
CAUTION
CAUTION
WARNING
WARNING
The Renogy Solar Inverter is suitable for 48V battery banks systems ONLY. Not
following the minimum DC requirement may cause irreversible damage to the unit.
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.
After the power switch is switched off, there is still high energy inside the solar
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
Remove the terminal cover by unscrewing
the appropriate terminals located on the
face of the solar 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.
ON
OFF

13
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.
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.
Specification Max Amps
Minimum Recommended
Wiring AWG
Battery Wiring
PV Wiring*
AC Input Wiring
AC Output Wiring
2AWG
8AWG
8AWG
8AWG
120A
50A
40A Max Bypass
30A Continuous
40A Max Bypass
Rated Battery
Discharge Current
Maximum Battery
Charging Current
Recommended
Wiring
Recommended
Circuit Breaker
Recommended
Ring Terminal
85A 120A 2AWG 2 pole, 140-160A 5/16”
Battery Wiring
NOTE
Make sure any circuit breakers are disconnected and ensure the unit is in the off
position.
NOTE
CAUTION

14
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.
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.
PV Wiring
Maximum PV
Charging Current
Recommended
Wiring
Recommended
Wiring
Recommended
Circuit Breaker
50A 8AWG 2 pole, 60A Bare Wire
For PV to charge 48V battery banks, you will need a minimum PV Voc voltage of
60VDC.
NOTE

15
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:
AC Output Wiring
Maximum Inverter
Bypass Current
Recommended
Wiring
Recommended
Circuit Breaker
40A 8AWG 2 pole, 40A
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.
There are two terminal blocks with “IN” and “OUT” markings. Please do NOT
misconnect input and output connectors.
AC Output should NEVER be connected to public power/utility or a generator.
NOTE
NOTE
WARNING
CAUTION
：Ground | L：Live | N：Neutral

16
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:
AC Input Wiring
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.
The AC input must never be connected to the AC output as irreversible overload or
damage may result
NOTE
WARNING
There are two terminal blocks with “IN” and “OUT” markings. Please do NOT
mis-connect input and output connectors.
CAUTION
：Ground | L：Live | N：Neutral

17
Communication Ports
Dry Contacts
RS485/CAN
USB
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
NOTE
When using both USB and RS485, you can only use one of two alternatives, not use
both simultaneously .
NOTE
the NO-N contact can drive the resistive load of 125VAC/1A,
30DCV/1A
This port will be used for connecting to the BT-2 Accessory for
remote monitoring and control.
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.
The USB port is for internal purposes only. It will not be supported
as it requires proprietary information.
NOTE
NOTE
Do not store units with auto gen start feature enabled. Generators exhaust
dangerous fumes when running.
This contact automatically starts the generator and charges the 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.
WARNING
1
2
3
4
5
6
7
8
5V
RS485-A
RS485-B
GND
NC
CAN_H
NC
CAN_L
Pin No. Parameter
NO
NC
N

18
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
Operation
The solar inverter is equipped with 3 LCD indicators and 4 working buttons
LCD Operation
ON
OFF
LED Behavior ParameterColor
AC/INV
CHARGE
FAULT
Yellow
Green
Red
Solid
Solid
Solid
Flashing
Flashing
The output will be powered by the AC Line
The output is powered by battery or PV in battery mode
Battery is charging
Battery is fully charged
System fault
Key Parameter
SET
UP
DOWN
ENT
Go to / Exit Settings menu
Previous selection
Next choice
Under the Settings menu, determine/enter options
AC/INV CHARGE F AU LT
SET UP DOWN ENT

19
The arrow only displays during
startup and not part of the solar
inverter functionality
Indicates that the charging circuit
is charging the battery
1
Indicates that the power utility/grid
is powering the battery charging
circuit (AC-DC)
Indicates that the battery is
powering the inverter circuit
(DC-AC)
3
5
Indicates that the utility/grid is
powering the load
The arrow only displays during
startup and not part of the solar
inverter functionality
2 6
7
Indicates solar (PV) power to the
battery charging circuit (DC-DC)
Indicates that the inverter circuit is
powering the load
4 8
1
2
3465 7 8
40 21
120