Dyness DL5.0C User Manual

Statement of Law

Copyright of this document belongs to Dyness Digital Energy Technology Co., LTD.. No part of this documentation maybe excerpted, reproduced, translated, annotated or duplicated in any form or by any means without the prior written permission of Dyness Digital Energy Technology Co., LTD..All Rights Reserved. This product complies with the design requirements of environmental protection and personal safety. The storage, use and disposal of the products shall be carried out in accordance with the product manual, relevant contract or relevant laws and regulations. Customer can check the related information on the website of Dyness Digital Energy Technology Co., LTD. when the product or technology is updated. Web URL: http://www.dyness.com/ Please note that the product can be modified without prior notice.

Revision History

Safety Precautions

⚠️ WARNING

Please do not put the battery into water or fire, in case of explosion or any other situation that might endanger your life. Please connect wires properly while installation, do not reverse connect. To avoid short circuit, please do not connect positive and negative poles with conductor on the same device. Please avoid any form of damage to battery, especially stab, hit, trample or strike. Please shut off the power completely when removing the device or reconnecting wires during the daily use or it could cause the danger of electric shock. Please use dry powder extinguisher to put out the flame when encountering a fire hazard, liquid extinguisher could result in the risk of explosion. For your safety, please do not arbitrarily dismantle any component in any circumstances. The maintenance must be implemented by authorized technical personnel or our company's technical support. Device breakdown due to unauthorized operation will not be covered under warranty.

❗ CAUTION

Our products have been strictly inspected before shipment. Please contact us if you find any abnormal phenomena such as device outer case bulging. The product shall be grounded properly before use in order to ensure your safety. To assure the proper use please make sure parameters among the relevant device are compatible and matched. Please do not mixed-use batteries from different manufacturers, different types and models, as well as old and new together. Ambient and storage method could impact the product life span, please comply with the operation environment instruction to ensure device works in proper condition. For long-term storage, the battery should be recharged once every 6 months, and the amount of electric charge shall exceed 80% of the rated capacity. Please charge the battery in 18 hours after it fully discharged or over-discharging protection mode is activated. Formula of theoretical standby time: T=C/I (T is standby time, C is battery capacity, I is total current of all loads).

Preface

Manual declaration

DL5.0C lithium iron phosphate battery energy storage system can provide energy storage for photovoltaic power generation users through parallel combination. Our product can store extra electricity into battery from photovoltaic power generation system in daytime and supply stable power to user's equipment as power backup at nighttime or any time when needed. It can improve the efficiency of photovoltaic power generation and increase the electric power efficiency by peak load shifting. This user manual details the basic structure, parameters, basic procedures and methods of installation and operation and maintenance of the equipment.

1 Introduction

Brief Introduction

DL5.0C lithium iron phosphate battery system is a standard battery system unit, customers can choose a certain number of DL5.0C according to their needs, by connecting parallel to form a larger capacity battery pack, to meet the user's long-term power supply needs. The product is especially suitable for energy storage applications with high operating temperatures, limited installation space, long power backup time and long service life.

Product Properties

DL5.0C energy storage product's positive electrode materials are lithium iron phosphate, battery cells are managed effectively by BMS with better performance, the system's features as below:

• Comply with European ROHS, Certified SGS, employ non-toxic, non-pollution environment-friendly battery.
• Anode materials are lithium iron phosphate (LiFePO4), safer with longer life span.
• Carries battery management system with better performance, possesses protection function like over-discharge, over-charge, over-current, abnormal temperature.
• Self-management on charging and discharging, Single core balancing function.
• Intelligent design configures integrated inspection module.
• Flexible configurations allow parallel of multi battery for longer standby time.
• Self-ventilation with lower system noise.
• Less battery self-discharge, then recharging period can be up to 10 months during the storage.
• No memory effect so that battery can be charged and discharged shallowly.
• With wide range of temperature for working environment, -20°C~ +55°C, circulation span and discharging performance are well under high temperature.
• Less volume, lighter weight.

Product Identity Definition

Table 1-1 Symbol Definition

Figure 1-1 Battery Module Label

Figure 1-1 Battery Module Label

Textual description of the battery module label: Module Type: DL5.0C, LFP Lithium Ion Battery. Capacity/Voltage: 100Ah/51.2V. Total Storing Energy: 5.12kWh. Charge Voltage: 56~57.6V. Includes fields for Series Number and Manufacture Date. Manufacturer: DAQIN NEW ENERGY TECH(TAIZHOU) CO., LTD. Contains CE mark and warning symbols.

Figure 1-2 Heating function Label

Figure 1-2 Heating function Label

(Only systems with heating function will be labeled with this label)

Label indicating "EQUIPPED WITH HEATING FUNCTION" with a thermometer icon.

2 Product Specification

Size and Weight

Performance Parameter

Interface Definition

This section elaborates the interface functions of the front interface of the device.

Figure 2-1 The Sketch of Interface

Figure 2-1 The Sketch of Interface

Diagram of the DL5.0C front panel interface with numbered ports: 1. Power switch (OFF/ON), 2. Positive socket, 3. ADD DIP switch, 4. SW (wake/sleep switch), 5. SOC indicator, 6. ALM indicator, 7. RUN indicator, 8. COM port, 9. CAN/485 port, 10. DRY CONTACT, 11. Negative socket, 12. Grounding.

Table 2-3 Interface Definition

Table 2-4 DIP switch definition and description

DIP switch position (master communication protocol and baud rate selection)

DIP Switch Description

When the batteries are connected in parallel, the host communicates with the slaves through the CAN interface. The host summarizes the information of the entire battery system and communicates with the inverter through CAN or 485. If the master is the latest DL5.0C battery with DIP switch: 1. The communication cable from the master CAN IN to the inverter comm port should be the correct one.

Master Settings for DIP Switch

Master Setting 1: For SMA, Victron, Ingeteam, Solis, GOODWE, Solplanet, SOFAR, SAJ, Deye, Hoymiles, APsystems, SOLAX, LUXPOWER, MUST, SOSEN, TBB, Afore. Set DIP switch "#3" to "ON" position.

Master Setting 2: For Axpert-king/VMIII/MAX, Infinisolar, Growatt SPH/SPA(CAN comm). Set DIP switch "#2" to "ON" position.

Master Setting 3: For Growatt SPF HVM-P/ES/WPV by RS485 communication. Set DIP switch "#2" and "#3" to "ON".

Master Setting 4: For Schneider Conext Series. Set DIP switch "#1" and "#3" to "ON".

Slave Settings: When master DIP is set as 1~4, all slaves keep DIP 0000 (no change needed).

Single Unit System: If the energy storage system has only one DL5.0C, it acts as the master. Follow the above steps.

Note: For more information on matching inverter brands, refer to the latest document "The list of compatibility between Dyness ESS and Inverters".

Interface Definitions

Figure 2-2 CAN/485 Interface Definition

Figure 2-2 CAN/485 Interface Definition

Diagram showing CAN/485 plug and socket of communication port. Ports labeled CAN IN and CAN OUT. Includes a textual description of the pin definition table.

Table 2-5 Pin Definition (CAN/485)

Figure 2-3 COM Interface Definition

Figure 2-3 COM Interface Definition

Diagram of the COM interface. Includes a textual description of the pin definition table.

Table 2-6 COM Interface Definition

Tips: Please pay attention to the communication COM definition of the inverter, in order to avoid voltage in the port to affect communication.

Table 2-7 LED Status Indicators

Table showing Battery Status, SOC(%), LED1-LED5, ALM, and RUN indicators.

• Status: Shutdown, Standby, Charging, Discharging.
• LED states: ● (green light always on), ○ (Flashing).
• A special ALM light flashing state occurs when communication between batteries is lost or abnormal; all lights from SOC to RUN of the master battery will flash together.

Battery Management System(BMS)

Voltage Protection

Low Voltage Protection in Discharging: When battery cell voltage or total voltage is lower than the rated protection value during discharging, over-discharging protection is activated, and the battery buzzer sounds. The system stops supplying power. Protection ends when voltage returns to the rated range.

Over Voltage Protection in Charging: Battery stops charging when total voltage or any battery cell voltage reaches the rated protection value. Protection ends when voltage returns to the rated range.

Current Protection

Over Current Protection in Charging: If charge current > 90A, current limit protection activates, limiting current to ≤3A. Protection is removed after a 10-second delay. This cycle repeats until current is below 90A.

Over Current Protection in Discharging: If discharge current > 110A, the battery buzzer alarms, and the system stops discharging after 15s. Discharging resumes after a 60s delay or immediately if charging current is present.

❗ CAUTION

The buzzer sound alarm setting can be manually turned off via background software; factory default is ON.

Temperature Protection

Low/Over temperature protection in charging: If battery temperature is outside 0°C~+65°C during charging, charging stops. For products with heating function, the range is -20°C ~ +65°C. Protection ends when temperature returns to the rated working range.

Low/Over temperature protection in discharging: If battery temperature is outside -20°C~+65°C during discharging, power supply stops. Protection ends when temperature returns to the rated working range.

Other Protection

Short Circuit Protection: If a short circuit occurs when the battery is activated from shutdown, short-circuit protection starts for 60 seconds.

Self-Shutdown: When the device connects no external loads and power supply, and no external communication for over 72 hours, it enters dormant standby automatically.

❗ CAUTION

Battery's maximum discharging current should be more than the load's maximum working current.

3 Installation and Configuration

Preparation for installation

Safety Requirement

This system must be installed by personnel trained in power supply systems with sufficient knowledge. Always follow safety regulations and local safety regulations.

• All circuits connected to this power system with an external voltage of less than 51.2V must meet the SELV requirements defined in the IEC60950 standard.
• If operating within the power system cabinet, ensure the power system is not charged. Battery devices should also be switched off.
• Distribution cable wiring should be reasonable and include protective measures to avoid touching these cables while operating power equipment.

Figure 3-1 Safety Gear

Figure 3-1 Safety Gear

Textual description of safety gear: Insulated Gloves, Safety Goggles, Safety Shoes.

Environmental requirements

Charging temperature range: 0°C~+55°C (Products without heating function); -20°C~+55°C (Products with heating function). Discharging temperature range: -20°C ~+55°C. Storage temperature: -10°C~+35°C. Relative humidity: 5% ~ 85%RH. Elevation: no more than 4000m.

Operating environment: Indoor installation, avoid direct sun and wind, no conductive dust and corrosive gas. The following conditions must be met:

• Installation location should be away from the sea to avoid brine and high humidity environment.
• The ground for product arrangement shall be flat and level.
• No flammable or explosive materials near the installation site.
• Optimal ambient temperature: 15°C~30°C.
• Keep away from dust and messy zones.

Tools and data

Figure 3-2 Installation Tools

Figure 3-2 Installation Tools

Textual description of installation tools: Power Cable Clamp, Pen, Phillips Screwdriver Bit, Flat-Head Screwdriver, Wire Stripper, Crimping Pliers, Wrench, Tape Measure, Hair Dryer, Cylinder Screwdriver, Torque Wrench, Drill.

Technical preparation

Electrical interface check

Devices that can be connected directly to the battery can be user equipment, power supplies, or other power supplies.

• Confirm whether the user's PV power generation equipment, power supply or other power supply equipment has a DC output interface, and measure whether the DC power output voltage meets the voltage range requirements in Table 2-2.
• Confirm that the maximum discharge current capability of the DC power interface of the user's photovoltaic power generation equipment, power supply or other power supply equipment should be less than the maximum charging current of the products used in Table 2-2.
• If the maximum discharge capability of the DC power interface of the user's photovoltaic power generation equipment is higher than the maximum charging current of the products used in Table 2-2, the DC power interface of the user's photovoltaic power generation equipment shall have a current limiting function to ensure the normal operation of the user's equipment.
• Verify that the maximum operating current of the battery-powered user equipment (inverter DC input) should be less than the maximum discharge current of the products used in Table 2-2.

The security check

• Firefighting equipment should be provided near the product, such as a portable dry powder fire extinguisher.
• An automatic fire fighting system shall be provided where necessary.
• No flammable, explosive and other dangerous materials are placed beside the battery.

Unpacking Inspection

• When the equipment arrives at the installation site, loading and unloading should be carried out according to the rules and regulations, to prevent from being exposed to sun and rain.
• Before unpacking, the total number of packages shall be indicated according to the shipping list attached to each package, and the case shall be checked for good condition.
• In the process of unpacking, handle with care and protect the surface coating of the object.
• Open the package, the installation personnel should read the technical documents, verify the list, according to the configuration table and packing list, ensure objects are complete and intact, if the internal packing is damaged, should be examined and recorded in detail.

Table 3-1 Packing List

Engineering coordination

Attention should be paid to the following items before construction:

• Power line specification.
• The power line specification shall meet the requirements of maximum discharge current for each product.
• Mounting space and bearing capacity.
• Make sure that the battery has enough room to install, and that the brackets have enough load capacity.
• Wiring.
• Make sure the power line and ground wire are reasonable. Not easy to short-circuit, water and corrosion.

Equipment Installation

Table 3-2 Installation steps

Step 1 Installation preparation

Confirm that the ON/OFF switch on the front panel of DL5.0C unit is in the "OFF" state to ensure no live operation.

Figure: ON/OFF switch shown in OFF position.

Step 2 Mechanical installation

1. Battery placement position determination
2. Battery module installation

Step 3 Electrical installation

1. Ground cable installation

Diagram showing grounding connection.

2. Battery module parallel cable installation
3. Parallel communication cable connection

Step 4 Battery system self-test

1. Turn the ON/OFF switch to the "ON" state.

Figure: ON/OFF switch shown in ON position.

2. Press SW button 3secs to wake up battery.

Diagram indicating the SW button and press duration.

3. Check the system output voltage and led status

Diagram showing the DL5.0C unit with status indicators.

4. Shut down the system

Step 5 Connecting inverter

1. Connect total positive & total negative cable of the battery system to the inverter.

Diagram showing positive and negative parallel cables connected to the inverter.

2. Battery module total positive cable installation
3. Battery module total negative cable installation
4. Connect the communication cable from the master CAN IN to the inverter.

Diagram showing CAN/485 communication cable connection.

5. Turn on the Power switch and wake up system by SW button.

Diagram indicating the SW button (Battery sleep switch).

6. Close the DC breaker between inverter and battery.
7. Turn on the inverter and check the communication between inverter and battery system.

Installation Preparation

1. Prepare equipment and tools for installation.
2. Check the DL5.0C unit and confirm that the ON/OFF switch is in the "OFF" state to ensure the device is shut off.

Mechanical Installation

Flexible Brackets Installation (Up to six layers)

1. DL5.0C brackets: The DL5.0C bracket is shown before installation as in Figure 3-3.

Figure 3-3: DL5.0C bracket.

2. Place the DL5.0C and brackets as shown in Figure 3-3, and insert the DL5.0C into the brackets. Each bracket is connected to the module by four screws, two screws on one side. As shown in Figure 3-4.

Figure 3-4: Inserting DL5.0C into brackets.

3. Install another module as the same method, do not tighten the screw first, put it on top of the first battery, as shown in Figure 3-5.

Figure 3-5: Stacking modules.

4. Install all screws according to the hole position; screws are on the front and back and need to be fixed.

Figure 3-6: Screwing the stacked modules.

5. Stack the required number of battery and bracket combinations as described above, and fix the screws. Twisting force keeps 9.8N·m. Shown as Figure 3-7.

Figure 3-7: Stacked battery modules with brackets.

Wall hanging Installation method

1. Use the positioning cardboard (provided in accessory package) and mark the screw hole positions on the wall. Shown as Figure 3-8.

Figure 3-8: Marking wall positions with cardboard.

2. The cardboard must be perpendicular to the ground while drawing the holes.
3. The bottom of the cardboard is about 300mm from the ground.
4. According to the position of the mark, drill 8 holes (diameter 10mm, depth >70mm) on the wall with an electric drill, for fitting expansion bolt M6.

Figure 3-9: Drilling holes in the wall.

5. Fixing the expansion bolt M6 into the bottom of the hole on the wall, and fix the Support bracket and Battery bottom bracket on the wall with M6 bolts. Twisting force keeps 9.8N·m.

Figure 3-10: Attaching brackets to the wall.

6. Carry or hoist the battery box to the installed Battery bottom bracket. Fix the Support bracket and the upper part of the battery box with M6 bolts (twisting force 9.8N·m). Then fix the Battery bottom bracket and the bottom part of the battery box with M6 bolts (twisting force 9.8N·m).

Figure 3-11: Mounting the battery box to brackets.

Floor Standing Installation Method

When the battery system is placed directly on the ground, a fixed support must be used to fix the top of the battery box on the wall.

1. Use the positioning cardboard (provided in accessory package) and mark the screw hole positions on the wall, as shown in Figure 3-12.

Figure 3-12: Marking wall positions for floor standing installation.

2. The bottom of the board must be in horizontal touch with the ground while marking the holes.

Figure 3-13: Drilling holes for floor standing installation.

3. According to the marked position, use an electric drill to drill 4 holes (diameter 10mm, depth >70mm) on the wall for installing M6 expansion bolts.
4. Fixing the expansion bolt M6 into the bottom of the hole on the wall.
5. Use the M6 bolt to fix the Support bracket to the wall and control the torque at 6NM.

Figure 3-14: Attaching support bracket to the wall.

6. Carry the battery box to the installation site, and place it about 15mm away from the wall surface, fixing the Support bracket and the cabinet.

Figure 3-15: Final mounting of the battery box.

Electrical installation

Before connecting the power cables, use a multimeter to measure cable continuity, short circuit, confirm positive and negative, and accurately mark the cable labels.

Measuring methods:

• Power cable check: Select the buzzer mode of multimeter and detect both ends of the same color cable. If the buzzer sounds, the cable is in good condition.
• Short circuit judgment: Choose multimeter resistor file, probe the same end of positive and negative pole. If the resistor shows infinity, the cable is available.

After visual testing of power line connection, the positive and negative poles of the battery shall be connected respectively to the positive and negative poles of the opposite terminal.

It is better to add a circuit breaker between the inverter and the battery system. The selection of the circuit breaker requires:

• Voltage: U>60V
• Current: I =Inverter power/45V

The circuit breaker is installed between the battery module and the inverter, as shown in Figure 3-16:

Figure 3-16: Wiring Diagram

Diagram description: Shows the connection between Inverter, Circuit Breaker, Battery Modules (Master and Slaves), and Communication Cables. Includes Master Setting 1-4 and Slave Setting 1 DIP switch configurations.

DIP Mode Settings

1. After the whole system connection, set the master DIP mode according to the inverter model first, then start the battery.
2. The BAT-INV communication cable is from inverter comm port to master CAN IN port. BAT-BAT cable is from master CAN OUT to slave1 CAN IN, slave1 CAN OUT to slave2 CAN IN...
3. The limited continuous current for each pair of power cable is 120A. Please add power cable according to the proportion if the max. working current of the inverter is more than 120A.

Battery parameter settings on the inverter

• Max Charging(Bulk) Voltage: 56.5V
• Absorption Voltage: 56V
• Float Voltage: 55.5V
• Shut Down(cut off) Voltage: 48~50V
• Shut Down(cut off) SOC: 10%
• Restart Voltage: 52V
• Recommended Charge Current: 50A*BATTERY Qty
• Recommended Discharge Current: 50A*BATTERY Qty

4 Use, Maintenance and Troubleshooting

Battery System Usage and Operation Instructions

After completing the electrical installation, follow these steps to start the battery system. Refer to P7 DIP Switch Description to prepare the battery module before starting up, then press the ON/OFF button to the ON position, press and hold the SW button for 3 seconds. After the indicator self-test, the RUN indicator will light and the SOC indicator will be on.

Figure 4-1: DL5.0C front panel indicators.

Diagram description: Shows the DL5.0C front panel with DIP ON, SW, SOC, ALM, RUN, COM, IN, OUT, DRY CONTACT indicators.

❗ CAUTION

After pressing the power button, if the battery status indicator on the front panel continues to be red, please refer to the "Alarm description and processing". If the failure cannot be eliminated, please contact the dealer timely.

Use a voltmeter to measure whether the voltage of the circuit breaker battery access terminal is higher than 44.8V, and check whether the voltage polarity is consistent with the inverter input polarity. If the circuit breaker battery input terminal has a voltage output and is greater than 44.8V, then the battery begun to work normally.

After confirming that the battery output voltage and polarity are correct, turn on the inverter, close the circuit breaker.

Check if the indicator of the inverter and battery connection (communication indicator and battery access status indicator) is normal. If it is normal, successfully complete the connection between the battery and the inverter. If the indicator light is abnormal, please refer to the inverter manual for the cause or contact the dealer.

Alarm Description and Processing

When protection mode is activated or system failure occurred, the alarm signal will be given through the working status indicator on the front panel of the DL5.0C. The network management can query the specific alarm categories.

If the fault such as single cell over voltage, charging over-current, under-voltage protection, high-temp protection and other abnormalities which affects the output, please deal with it according to Table 4-1.

Table 4-1 Main Alarm and Protection

Analysis and Treatment of Common Faults

Analysis and treatment of common faults in the Table 4-2:

Table 4-2 Analysis and Treatment of Common Faults

If you need any technical help or have any question, please contact the dealer in time.