Eco-worthy Dc24v Pure Sine Wave Off Grid Inverter User Manual

DC24V Pure Sine Wave Off Grid Inverter
User Manual

Important Safety Instructions

Please reserve this manual for future review.
This manual contains instructions on the safety, installation, and operation of the ECO series high-frequency pure sine wave inverter (“inverter” as referred to in this manual).

1. Explanation of Symbols
   Please read related literature accompanying the following symbols to enable users to use the product efficiently and ensure personal and property safety. Please read the literature accompanying the following symbols.

   Symbols	Definition
   TIP	Indicates any practical advice for reference
   	IMPORTANT: Indicates a critical tip during the operation, if ignored, may cause the device to run in error.
   	CAUTION: Indicates potential hazards. If not avoided, it may cause the device to be damaged.
   	WARNING: Indicates the danger of electric shock. If not avoided, it would cause casualties.
   	WARNING HOT SURFACE: Indicates the risk of high temperature, if not avoided, would cause scalds.
   	Read the user manual carefully before any operation.
   WARNING	The entire system should be installed by professional and technical personnel.

2. Requirements for Professional and Technical Personnel
   • Professionally trained；
   • Familiar with related safety specifications for the electrical system;
   • Read this manual carefully and master related safety cautions.
3. Professional and Technical Personnel is Allowed to do
   • Install the inverter to a specified location.
   • Conduct trial operations for the inverter.
   • Operate and maintain the inverter.

4. Safety Cautions Before Installation

IMPORTANT	When you receive the inverter, check whether there is any damage in transportation. Contact the transportation company, our local distrib- utor, or our company for any problem.
CAUTION	•  When placing or moving the inverter, follow the instructions in the manual. •  When installing the inverter, evaluate whether the operation area exists arc danger. •  The inverter needs to be connected to a battery. The battery’s minimum capacity (Ah) is recommended to be five times the current that equals the inverter’s rated output power divided by the battery’s voltage.
WARNING	•  Keep the inverter out of the reach of children. •  This inverter is an off-grid type. It is strictly prohibited to connect the inverter to the grid. Otherwise, the inverter will be damaged. •  This inverter is only allowed for stand-alone operation. It is prohibited to connect multiple units in parallel or series. Otherwise, the inverter will be damaged.

CAUTION

•   Check whether wiring connections are tight to avoid the danger of heat accumulation due to loose connections. •  The protective grounding is connected to the ground. The cross-section of the wire should not be less than 4mm2. • The DC input voltage must strictly follow the parameter table. Too high or too low DC input voltage will affect the inverter’s normal operation and damage it. •  It is recommended that the connection length between the battery and the inverter be less than 3 meters. If greater than 3 meters, please reduce the current density of the connection wire. •  A fuse or breaker should be used between battery and Inverter; the fuse or breaker’s rated current should be twice the inverter rated input current. •  DO NOT install the inverter close to the flooded lead-acid battery because the terminals’ sparkle may ignite the hydrogen released by the battery.

WARNING

•  The AC output terminal is only for the load connection. Do NOT connect it to another power source or utility. Otherwise, the inverter will be damaged. Turn off the inverter when connecting loads. •  It is strictly forbidden to connect a transformer or a load with a surge power (VA) exceeding the overload power at the AC output port. Otherwise, the damage will be caused to the inverter. •   Do not connect battery chargers or other similar products to the input terminal of the inverter. Otherwise, the inverter will be damaged.

5. Safety Cautions for Mechanical Installation

WARNING

•  Before installation, ensure the inverter has no electrical connection.  •  Confirm enough heat dissipation space for the inverter before installation. Do not install the inverter in a harsh environment such as humid, salt spray, corrosion, greasy, flammable, explosive, or dust accumulation.

6. Safety Cautions for Controller Operation

WARNINGHOT SURFACE	When the inverter is working, the cover temperature is very high because of the accumulated heat; please do not touch it.
CAUTION	When the inverter is running, please do not open the cabinet.
WARNING	The inverter’s AC output is of high voltage, do not touch the wiring connection to avoid electric shock.

8. Dangerous Operations Which Would Cause an Electric Arc, Fire, or Explosion

• Touch the wire end that hasn’t been insulation treated and may be electriferous.
• Touch the wiring copper row, terminals, or internal inverter modules that may be electriferous.
• The connection of the power cable is loose.
• Screw or other spare parts inadvertently falls into the inverter.
• Improper operations by untrained non-professional or technical personnel.

WARNING Once an accident occurs, it must be handled by professional and technical personnel. Improper operations would cause more serious accidents.
9. Safety Cautions for Stopping the Inverter

• The internal conductive modules could be touched after the inverter stopped running for five minutes.
• The inverter is allowed to restart after removing the faults, which affects the safety performance.
• There are no serviceable parts inside. If any maintenance service is required, please contact our local distributor or the service personnel.

WARNING Do NOT touch or open the shell after the inverter is powered off within ten minutes.

10. Safety Cautions for Inverter Maintenance

•  It is recommended to check the inverter with testing equipment to ensure no voltage and current.
• When conducting electrical connection and maintenance, post a temporary warning sign or put up barriers to prevent the unrelated personnel from entering the electrical connection or maintenance area.
• An improper operation of the inverter may cause personal injury or equipment damage.
• It is recommended to wear an antistatic wrist strap or avoid unnecessary contact with the circuit board.

Overview

The ECO series, a high-frequency sine wave inverter, adopts a fully digital intelligent design and voltage-current dual closed-loop control algorithm. Featured with fast response, high conversion efficiency, low Total Harmonic Distortion(THD), and high reliability running, the ECO series can be widely used in the DC-AC off-grid systems (such as vehicle systems, security monitoring systems, emergency lighting systems, household power systems, field power systems, and other systems requiring higher power quality).
Features:

• Pure sine wave output
• Input to output electrical isolation
• Output power factor up to 1
• Input Protection: Low-voltage, Over-voltage
• Output Protection: Overload, Short circuit, Overheating
• RS485 com. port to realize remote monitoring①
• External switch design, matched with EPEVER products, to expand inverter control function and reduce power consumption
• Diversified AC output sockets
• EN/IEC62109-1/2, EN61000-6-2/4, and FCC approved
  ① For inverters with 12V/24V input voltage, the RS485/RJ11 port has NO communication isolation design. This function (communication isolation design) is just for inverters with 48V input voltage.

Appearance

  CAUTION The appearance varies with different product models; please refer to the actual product appearance.

1. Cooling Fan
   • Conditions to start the cooling fan:
   The heat sink temperature is higher than 45℃ or The internal inverter temperature is higher than 45℃ or The output power is higher than 50% of the rated power
   • Conditions to stop the cooling fan:
   The heat sink temperature is lower than 40℃ and The internal inverter temperature is lower than 40℃ and
   The output power is lower than 40% of the rated power
   The AC output port varies with different products. Please refer to chapter
   3 Naming Rule for the Specific Supported Types.
2. The RS485 communication port can be connected to the remote meter, Bluetooth module, WIFI module, PC, etc., for parameter setting and remote monitoring.
3. Indicators include the Power indicator and Fault indicator. The indicator and buzzer status under different working conditions are shown in the table below.

Naming Rule

1. Instructions for the Aanti-Reverse and Anti-Surge Current Protection

Suffix	Instruction	Figure
T	Terminal
E	European socket
UK	United Kingdom socket
N	American Socket

GFCI Socket Needs to be Tested After Power-on to Ensure Proper Operation.
A.Preparation
Connect a circuit breaker and an AC load (it is recommended to use a night light to observe the status conveniently) to the GFCI socket. Turn on the inverter after confirming the wiring.
B.Testing

1.  If the red LED is ON solid, it indicates that the GFCI socket is damaged; please replace a new one.
2.  If the LED is green ON after it flashes in red three times, connect the circuit breaker, and the night light will be turned on. Then, press the “TEST” button to observe the testing status:

The “TEST” button always pops up, and the night light keeps ON solid. It indicates that the GFCI wiring is an error; please correct it.
The “TEST” button goes down, while the “RESET” button pops up. The LED and the night light are turned off, indicating the GFCI socket is normal (Note: Press the “RESET” button again to recover the load output).

Connection Diagram

CAUTION It is recommended to directly connect the inverter DC input terminal to the battery.

Installation

5.1Attentions

•  Read all the installation instructions carefully in the manual before installation.
• Be very careful when installing the batteries. When installing the open-type lead-acid battery, please wear eye protection and rinse with clean water for battery acid contact.
• Keep the battery away from any metal objects, which may cause a short circuit of the battery.
• Loose power connectors and corroded wires may result in high heat, melt wire insulation, burn surrounding materials, or cause a fire. Ensure tight connections and secure cables with cable clamps to prevent them from swaying in moving applications.
• The DC input voltage must strictly follow the parameter table. Too high or too low DC input voltage affects the normal operation and may damage the inverter. DC input 12V: Surge voltage < 20V. DC input 24V: Surge voltage < 40V. DC input 48V: Surge voltage < 80V.
• Select the system cables according to 3.5A/mm2 or less current density.
• Avoid direct sunlight and rain infiltration when installing it outdoor.
• After turning off the power switch, do not open or touch the internal component immediately. Performing related operations after 10 minutes is recommended.
• Do not install the inverter in a harsh environment such as humid, salt spray, corrosion, greasy, flammable, explosive, or dust accumulation.
• The AC output is of high voltage, do not touch the wiring connection to avoid electric shock.
• To prevent injury, do not touch the fan while it is working.

5.2Wire Size and Circuit Breaker
The wiring and installation methods conform to the national and local electrical code requirements.
Wire, terminals, and circuit breaker selection for battery

According to the recommended battery wire size, 2 battery wires, connected in parallel are necessary for the 230Vac outpur version and 4 battery wires connected in parallel are necessary for the 120Vac output version.
CAUTION The above wire size and circuit breaker size are for reference only; please choose a suitable wire and circuit breaker according to the actual situation.
Wire and circuit breaker selection for AC output

CAUTION

• The above wire size and circuit breaker size are for reference only; please choose a suitable wire and circuit breaker according to the actual situation.
• The wire size is only for reference. If there is a long distance between the inverter and the battery, larger wires should be used to reduce voltage drop and improve system performance.

5.3Mounting
Installation procedures:
Step 1: Read this manual carefully.
Step 2: Determine the installation location and heat-dissipation space The inverter should be installed in a place with sufficient airflow through the dissipation pad of the inverter. And a minimum clearance of 150mm from the upper and lower edges of the inverter is recommended to ensure natural thermal convection. CAUTION It is not recommended to install the product in an enclosed cabinet,  where the device cooling will be influenced. If mounted in an enclosure cabinet, make sure there’s effective ventilation and do not turn on all the loads in case the over temperature protection is caused.
Steep 3: Wiring
CAUTION

• Turn off the inverter switch before wiring.
• Please do not connect the circuit breaker or fuse during the wiring and ensure that the poles’ leads are connected correctly.

Wiring Sequence

1. Ground Connection
   The wire size for the ground connection must be thicker or equal to the AC output wires. Refer to chapter 5.2 Wire size and circuit breaker for detailed wire size.
2. Battery Connection
   CAUTION
   A fuse must be installed on the battery side, conformed to the following requirements.
   1. Fuse voltage is 1.5 to 2 times the inverter’s rated voltage.
   2. Fuse current is 2 to 2.5 times the inverter’s rated current.
   3. Distance between the fuse and the battery cannot be farther than 150mm.
   

WARNING

• The AC loads shall be determined by the continuous output power of the inverter. The surge power of the AC load must be lower than the instantaneous surge power of the inverter, or the inverter will be damaged.
• The N pole of the AC output port cannot be grounded. If grounding the N pole is necessary, please purchase the IPower-Plus-B series.

Optional Accessories Connection

1. RS485 Communication Port

RJ45 Pin Definition:

Step 4：Turn on the Inverter

1. Connect the breaker at the inverter input terminal or the fuse at the battery terminal.
2. Turn on the inverter switch, and the green indicator will be lighted on, which states a normal AC output.
3. Connect the breaker at the AC load terminal, turn on the AC loads, and check the system working status.
   CAUTION When supplying power for different loads, it is recommended to first turn on the load with a large impulse current. And then turn on the load with a smaller impulse current after the load output is stable.
   
4. If the FAULT indicator flashes red and the buzzer alarms after powering the inverter, please immediately turn off the load and the inverter. Clear the faults according to chapter 8 Troubleshooting. After clearing the faults, please operate the inverter again by following the above steps.

Parameters Setting

ECO parameters such as power saving mode, baud rate, output voltage class, and output frequency class can be set on the remote meter, phone APP, or PC software. The following chapters take parameters setting on the remote meter as an example (for connection of the remote meter, please refer to chapter 5.3 Mounting).
6.1Power Saving Mode
Users can enable the power saving mode and set the PSI/PSO value by the remote meter (The minimum power step is 1VA).
When the actual load power is lower than the PSI (the power to enter the power saving mode), the system will automatically switch to the power saving mode. And then, the device output is turned on for 1s and turned off for 5s.
When the actual load power exceeds the PSO (the power to exit the power saving mode), the inverter will automatically exit the power saving mode and resume work.
1) Enable power saving mode (PSE)
Step1: In the real-time interface of the remote meter, press and hold the button to enter the parameters setting interface.
Step2: Click the or button to select the PSE parameter.
Step3: Press and hold the button until the PSE parameter (OFF default) flashes.
Step4: Click the or button to set the PSE state.
• Select ON to enable the power saving mode.
• Select OFF to disable the power saving mode.
Step5: Press and hold the button to confirm.
2) Set the Power to Exit the Power Saving Mode (PSO)
Step1: In the parameters setting interface, click the or button to select the PSO parameter.
Step2: Press and hold the  button until the PSO value flashes.
Step3: Click the or button to set the PSO parameter.
• Click the button to decrease the PSO value by 1.
• Click the button to increase the PSO value by 1.
• Press and hold the button to increase the PSO value by 10. After ten
adding, the PSO value will increase by 100 each time. When the button is released, press and hold it again to repeat the above operation.
Note: The setting parameter cannot exceed the user define, or else; it will return to the initial value to start the loop.
Step4: Press and hold the button to confirm.
3) Set the power to enter the power saving mode (PSI)
Step1: In the parameters setting interface, click the or button to select the PSI parameter.
Step2: Press and hold the button until the PSI value flashes.
Step3: Click the or button to set the PSI parameter.
• Click the button to decrease the PSI value by 1.
• Click the  button to increase the PSI value by 1.
• Press and hold the button to increase the PSI value by 10. After ten adding, the PSI value will increase by 100 each time. When the button is released, press and hold it again to repeat the above operation.
Note: The setting parameter cannot exceed the user define, or else; it will return to the initial value to start the loop.
Step4: Press and hold the button to confirm.
6.2Other Parameters
Users can set the baud rate, output voltage class and output frequency class, etc. by the remote meter.
Operation:
Step1: In the real-time interface, press for 2s to enter the parameter setting interface.
Step2: Click or to select the parameter to be configured.
Step3: Press for 2s to enter the configuration interface of the specified parameter.
Step4: Click or to configure the parameter value.
Step5: Press for 2s to confirm the configuration.
Step6: Click +  to exit the current interface.
Parameters Setting Range:

Display	Parameters	Default	Setting range
	Output voltage class	220VAC	220VAC/230VAC/240VAC
		110VAC	100VAC/110VAC/120VAC
	Output frequency class	220/230/240VAC: 50Hz	50Hz/60Hz
		100/110/120VAC: 60Hz
	LCD backlight time	30s	30s/ 60s/100s(ON solid)
	Power Saving Enable	OFF	ON/OFF
	Power Saving In	20VA	20VA – (2O rated power)
	Power Saving Out	40VA	(20VA + PSI) – (50 rated power)
	Baud Rate Select?	115200	9600/115200
	Low voltage disconnect voltage 1	12V: 10.8V 24V: 21.6V 48V: 43.2V	12V: 10.5V-14.2V: step size 0.1V 24V: 21V-30.2V: step size 0.1V 48V: 42V-62.4V: step size 0.1V
	Low voltage reconnect voltage 3	12V: 12.5V 24V: 25V 48V: 50V	12V: 11.5V-15.2V: step size 0.1V 24V: 22V-31.2V: step size 0.1V 48V: 43V-63.4V: step size 0.1V
	Over voltage reconnect voltage a	12V: 14.5V 24V: 29V 48V: 58V	12V: 11.5V-15.2V: step size 0.1V 24V: 22V-31.2V: step size 0.1V 48V: 43V-63.4V: step size 0.1V
	Over voltage disconnect voltage 3	12V: 16V 24V: 32V 48V: 64V	12V: 10.5V-14.2V: step size 0.1V 24V: 21V-30.2V: step size 0.1V 48V: 42V-62.4V: step size 0.1V

After configuring the parameters marked with , the inverter will restart automatically. It will resume work according to the new parameter value.
Due to the length limit of the LCD displayed data. When the baud rate is set to 115200, the value displayed on the LCD is 1152.
For the parameters marked with , please set them by the input voltage rules in chapter 7 Protections. Otherwise, the parameter settings will not succeed.

Protections

1.  Input Voltage Protection
   • The following rules must be followed when modifying the battery’s input voltage parameters:
   • Detailed status is shown as the following when the input voltage protection occurs.

CAUTION Although the inverter is supplied with the input over-voltage protection, the surge voltage cannot higher than 20V for the 12V system, not higher than 40V for the 24V system, and not higher than 80V for the 48V system. Otherwise, the inverter may be damaged.
Overload Protection

CAUTION When the overload protection happens, the AC output will shut down and cannot be recovered automatically. After cutting down some of your loads, you need to restart the inverter to recover the AC output.
Output Short Circuit Protection

Inverter over Temperature Protection

Troubleshooting

WARNING A high voltage occurs inside the inverter. DO NOT try to repair or maintain the  inverter by yourself, and it may cause an electric shock.

Maintenance

The Following Inspections and Maintenance Tasks are Recommended at Least Two Times Per Year for Good Performance.

• Make sure no block on airflow around the inverter. Clear up any dirt and fragments on the heat sink.
• Check all the naked wires to ensure insulation is not damaged by sun exposure, frictional wear, dryness, insects or rats, etc.
• Verify the indicator display is consistent with the actual operation.
• Confirm that terminals have no corrosion, insulation damage, high temperature, burnt/discolored sign, and tighten terminal screws to the suggested torque.
• Clear up dirt, nesting insects, and corrosion in time.
• Check and confirm that the lightning arrester is in good condition. Replace a new one in time to avoid damaging the inverter and other equipment.

WARNING Risk of electric shock! Confirm all the power is turned off and all the capacitor’s energy has been discharged before performing the above operations.

Specifications

1. The “Surge current when power on” parameter is for the customized products with an anti-surge function (whose product model has “S”). For other products, the actual surge current prevails.
2.  It means the rated output efficiency when the load power equals the “continuous output power” under the rated DC input voltage.
3.  It means the max. output  efficiency when the inverter is connected with different loads under the rated DC input voltage.

Environment Parameters

Certification

References

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