V-TAC ESS Series User manual

USER
MANUAL
Version：01.00
48100E ESS Series LFP Battery Pack

Notice
The products, services or features you purchase shall be bound by the commercial
contract and terms. All or part of the products, services or features described in this
document may not be in your purchase or within the scope of use. Unless otherwise
agreed in the contract, we makes no express or implied statement or guarantee for
the content of this document.
Due to product version upgrades or other reasons, the content of this document will
be updated from time to time. Unless otherwise agreed, this document is only used
as a guide, and all statements, information, and suggestions in this document do not
constitute any express or implied warranty.

CONTENTS
1 Foreword.................................................................................................................................................
2 Safety........................................................................................................................................................
2.1 Safety Precautions......................................................................................................................
2.2 Abuse Operation.........................................................................................................................
3 Overview..................................................................................................................................................
3.1 Product Description...................................................................................................................
3.1.1 Features...............................................................................................................................
3.1.2 Basic Functions.................................................................................................................
3.2 Application Scenario.................................................................................................................
4 Application Description.....................................................................................................................
4.1 Parallel Connection Application............................................................................................
4.2 Low-temperature Application................................................................................................
4.3 Low battery-capacity Storage (SOC≤5%)...........................................................................
4.4 Application of Nearing the Ocean.........................................................................................
5 Product Introduction..........................................................................................................................
5.1 Module Specification Parameter Introduction.................................................................
5.2 Panel Introduction......................................................................................................................
5.2.1 Panel Function...................................................................................................................
5.2.2 Indicator Description......................................................................................................
5.2.3 DIP Address........................................................................................................................
5.2.4 Communication Port Definition..................................................................................
5.2.5 Dry Contact Alarm Definition.......................................................................................
6 Installation..............................................................................................................................................
6.1 Tools Preparation........................................................................................................................
6.2 Unpacking and Inspection.......................................................................................................
6.3 Preparing for Installation.........................................................................................................
6.4 Installation....................................................................................................................................
6.5 Cable Connection.......................................................................................................................
7 Power On.................................................................................................................................................
7.1 Power-on Operation...................................................................................................................
7.2 Power System Parameter Setting...........................................................................................
8 Shipment & Maintenance & Storage...........................................................................................
8.1 Shipment.......................................................................................................................................
8.2 Maintenance................................................................................................................................
8.2.1 Battery Maintenance Considerations.......................................................................
8.2.2 Routine Maintenance.....................................................................................................
8.3 Battery Storage...........................................................................................................................
9 Trouble Shooting.................................................................................................................................
10 Warranty...............................................................................................................................................
11 Abbreviations.....................................................................................................................................
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This document is mainly applicable to the following engineers
Technical Support Engineer
Installation Personnel
Maintenance Engineer
1
1 Foreword
This user manual mainly introduces the 48100E ESS series product introduction,
application description, installation instructions, power-on instructions, maintenance
instructions and provides instructions for technical support engineers, maintenance
engineers and users.
Reader
Overview
Signs
The following signs may appear in this article, and their meanings are as follows.
Sign Meaning Description
Danger Indicates a hazard with a high level of risk that will cause
death or serious injury if not avoided
WarningIndicates a hazard with a moderate risk that may cause
death or serious injury if not avoided
NoticeIndicates a hazard with a low level of risk that may cause
minor or moderate harm if not avoided
Explanation
Supplementary explanation of key information in the
main text."Explanation" is not safety warning information,
and does not involve personal, equipment and
environmental damage information.
DANGER
WARNING
NOTE
ATTENTION

Before carrying out battery work, you must read carefully the safety precautions
and master the correct installation and connection methods of the battery.
Prohibit to turn it upside down, tilt, or collide.
Prohibit to short-circuit the positive and negative poles of the battery,
otherwise it will cause the battery to be damaged.
Prohibit to throw the battery pack into a fire source.
Prohibit to modify the battery, and it is strictly prohibited to immerse the
battery in water or other liquids.
DO NOT place installation tools on the battery during battery installation.
DO NOT disassemble, squeeze, bend, deform, puncture, or shred the
battery without the authorization of authorized dealers.
DO NOT exceed the temperature range, otherwise it will affect the battery
performance and safety.
The battery circuit must be kept disconnecting status during installation
and maintenance operations.
Check the battery connection end bolts regularly to confirm that the bolts
are tight.
2
2 Safety
2.2 Abuse Operation
2.1 Safety Precautions
The battery pack needs to avoid abuse operations under the following (includ-
ing but not limited to) conditions:
Abuse Operation Protection Description
If the positive and negative poles are connected reversely,
the battery will be directly damaged.
External short circuitIf the battery pack is short circuited externally, the battery
will be directly damaged.
Series connection application
The battery pack does not support the application of
battery packs in series. If the battery packs are forcedto be
connected in series, the batteries may be directly damaged,
and may even cause fire, explosion and other dangers.
Reverse connection of positive
and negative poles

3
3 Overview
The 48100E ESS series products use lithium iron phosphate (LFP) as the positive
electrode material. It can be widely used in energy storage systems such as residen-
tial energy storage, back-up power, and PV self-consumption optimization.
The battery pack is composed of 15 cells/16 cells of LFP batteries in series
connection, with low self-discharge, high energy density, and no memory effect. This
type of battery also has excellent performanc e in high rate, long cycle life, wide
temperature range, and high safety.
3.1.1 Features
3.1 Product Description
• High energy density
Higher volume ratio energy and weight ratio energy.
• Maintenance-free
The battery pack is maintenance-free in the process of using, which can save
customers' battery operation, maintenance testing costs and reduce the frequency of
on-site replacement.
• Long cycle life
The battery pack life is 3 times long than the ordinary lead-acid batteries.
• Excellent temperature characteristics
When charging, the battery working temperature can reach 0℃～＋60℃(recom-
mended using temperature: +15～＋35℃). When discharging, the battery working
temperature can reach -20℃～＋60℃(recommended using temperature: +15～
＋35℃).
3.1.2 Basic Functions
• Monitor
The battery system uses a high-performance BMS, it has protection functions
such as current, voltage.
• Alarm
Support abnormal alarms such as overvoltage, under-voltage, overcurrent, short
circuit, high and low temperature, battery failure, hardware failure, etc.
• Communication
Provide dual RS485 interfaces, upload alarming and status data through the
RS485/CAN communication protocol.

• Parallel connection application
Support multiple battery packs in parallel, RS485/CAN communication supports
up to 6 groups without control unit（or max supports 15 groups with control unit）.
• Balance function
Support the cells balance function.
• Extended function
Extended SNMP V2, SNMP V3, LCD, anti-theft and the mixed use of lithium
battery and lead-acid battery.
Figure 3-1 Normal Working Operation Diagram of the Battery Pack
4
3 Overview
3.2 Application Scenario
The battery pack is used to provide backup power, load shifting, peaking
shaving and can be used for residential energy storage, solar energy storage and
other application scenarios.
The normal working operation diagram of the battery pack can be as shown in
the figure below.

4 Application Description
The battery packs support parallel connection, and synchronously increases the
backup time or backup power.
Confirm the consistency between the battery packs, check the SOC and voltage
and turn off the batteries before connecting them in parallel.
Multiple battery packs of parallel connection need to use RS485/CAN to
communicate, pay attention to the DIP switch settings.
4.2 Low-temperature Application
4.1 Parallel Connection Application
• Low-temperature Charging
The battery pack does not support direct charging of the battery below 0°C.
When the minimum temperature of the battery is below 0°C, the BMS will cut-off the
charging circuit and cannot be charged.
• Low-temperature Discharging
The battery pack does not support discharge below -20°C. When the minimum
temperature of battery is below -20°C, the BMS will cut-off the discharge circuit and
cannot discharge.
4.3 Low battery-capacity Storage (SOC≤5%)
After the battery pack is power off, there will be BMS static power consumption
and self-discharge loss. In actual scenarios, it is necessary to avoid low-battery-pow-
er state（SOC≤5%）storage. If it is unavoidable, the longest storage period is 30
5
1 Foreword.................................................................................................................................................
2 Safety........................................................................................................................................................
2.1 Safety Precautions......................................................................................................................
2.2 Abuse Operation.........................................................................................................................
3 Overview..................................................................................................................................................
3.1 Product Description...................................................................................................................
3.1.1 Features...............................................................................................................................
3.1.2 Basic Functions.................................................................................................................
3.2 Application Scenario.................................................................................................................
4 Application Description.....................................................................................................................
4.1 Parallel Connection Application............................................................................................
4.2 Low-temperature Application................................................................................................
4.3 Low battery-capacity Storage (SOC≤5%)...........................................................................
4.4 Application of Nearing the Ocean.........................................................................................
5 Product Introduction..........................................................................................................................
5.1 Module Specification Parameter Introduction.................................................................
5.2 Panel Introduction......................................................................................................................
5.2.1 Panel Function...................................................................................................................
5.2.2 Indicator Description......................................................................................................
5.2.3 DIP Address........................................................................................................................
5.2.4 Communication Port Definition..................................................................................
5.2.5 Dry Contact Alarm Definition.......................................................................................
6 Installation..............................................................................................................................................
6.1 Tools Preparation........................................................................................................................
6.2 Unpacking and Inspection.......................................................................................................
6.3 Preparing for Installation.........................................................................................................
6.4 Installation....................................................................................................................................
6.5 Cable Connection.......................................................................................................................
7 Power On.................................................................................................................................................
7.1 Power-on Operation...................................................................................................................
7.2 Power System Parameter Setting...........................................................................................
8 Shipment & Maintenance & Storage...........................................................................................
8.1 Shipment.......................................................................................................................................
8.2 Maintenance................................................................................................................................
8.2.1 Battery Maintenance Considerations.......................................................................
8.2.2 Routine Maintenance.....................................................................................................
8.3 Battery Storage...........................................................................................................................
9 Trouble Shooting.................................................................................................................................
10 Warranty...............................................................................................................................................
11 Abbreviations.....................................................................................................................................

The atmospheric corrosion environment is defined and classified according to
the natural environment state, and the A/B environment is defined as follows:
A: environment refers to the ocean or the land near the pollution source, or
the environment with simple shelter (such as awning). "Near the ocean" refers to the
area 0.5～3.7km away from the ocean; "Near the pollution source" refers to the area
within the following radius: 3.7km from the saltwater lake, 3km from heavy pollution
sources such as smelters, coal mines, and thermal power plants, chemical industry,
rubber, electroplating, etc. 2km from medium pollution sources such as chemical
industry, rubber and electroplating, etc. And 1km from light pollution sources such as
food, leather and heating boilers, etc.
B: environment. Refers to the environment on land or outside with simple
shelter (such as awning) within 500m from the coast, or the environment on the sea.
days@25°C, 15 days@45°C. The battery needs to be recharged in time after storage,
otherwise the battery may be damaged due to over-discharge, and the entire battery
pack needs to be replaced.
The following conditions may cause the battery pack to be stored in a
discharged state:
After the utility power failure, the line/fault cannot be eliminated in time, and
the power supply cannot be restored for a long time.
After the installation and commissioning work is completed, the utility power
is turned off directly, but the battery pack is not powered off, which will cause the
battery to enter the low power consumption mode.
Other reasons cause the battery pack to fail to enter low power consumption
normally.
4 Application Description
4.4 Application of Nearing the Ocean
The battery pack can be used under other environmental conditions and cannot
be used alone under A/B environment. If it is to be used in the A/B environment, it
needs to be equipped with a high-protection air-conditioning cabinet, which is
recommended to be IP55 or higher.
6
NOTE

The battery packs show in the table are standard modules. Other non-standard
products of us are not shown in this document.
With process improvements and product upgrades, the product characteristics and
parameters described are subject to change without notice.
Terminal Torque: 7 N•m.
For the above parameters of specific products, please refer to the corresponding
product datasheet.
The width size doesn’t contain hangers and the depth size doesn’t contain
handles.
5 Product Introduction
Dimension are defined as follows:
Table 5-1 Product Specification Parameter List
5.1 Module Specification Parameter Introduction
7
NOTE
Model Nominal
Voltage(V)
Nominal
Capacity
(Ah)
Dimension(mm)
Charge Current(A)
Recommend Max
48100E 48 100 20 100
51.2100 20 100
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Cell Qty Reference
Weight(kg)
Figure 5-1 Definition Diagram of Dimension
42
45
445 450 132.5
W D H
445 450 132.5

5 Product Introduction
5.2 Panel Introduction
5.2.1 Panel Function
Figure 5-2 VT48100E Front Panel
Table 5-2 Operation Panel Interface Definition
48100E ESS series panel functions take 48100E as an example.
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The interface definition as below table：
No. Name Description Remark
1 SOC State of charge Details shows in table 5-4
2 ALM Alarm light Details shows in table 5-5
3 RUN Run state of battery Details shows in table 5-5
4 ADD Dip switch Address range 1~15
5 RJ-11 RJ-11 interface for
firmware update Used for debugging
6~7 RJ-45 2*RJ
- 45 interface for
RS485/CAN communication
Details shows in table 5-7
8 RESET Reset switch
9 Dry Contact NC. / NO. dry contact
Default NC. dry contact;
Dry contact definition shows
in tableB5-8
10 Switch Power switch -
-
11 Battery Output Power terminal -
12 GND Module ground connection -
13 -
LCD （ Optional ） LCD display screen
NOTE

9
5 Product Introduction
5.2.2 Indicator Description
Table 5-3 Indicators Flash Mode
Table 5-4 SOC Indicator Definition
There are 6 Indicators on the operation panel, divided into three categories: 4
green SOC Indicators, 1 red alarm Indicator and 1 green run indicator.
The power indicator is used to identify the current capacity status of the battery.
The number of flashing indicators corresponds to different remaining capacity. The
specific meaning is shown in the following table.
Flash Mode ON OFF Common Name
Flash 1 0.25 s 3.75 s /
Flash 2 0.5 s 0.5 s Slow Flash
Flash 3 0.5 s 1.5 s /
Flash 4 0.25 s 0.25 s Strobe
Number of Indicator Remaining Capacity Range
1 indicator on 0%＜SOC≤25%
2 indicators on 25%＜SOC≤50%
3 indicators on 50%＜SOC≤75%
4 indicators on 75%＜SOC≤100%
The position of terminal block of the above-mentioned panel interfaces is
different for different 48100E ESS series products. Please refer to the corresponding
product datasheet.
NOTE

Table 5-5 Battery Status and Indicator Operation Mode
5 Product Introduction
The corresponding relationship between battery operation status and indicator
operation status is shown in the following table.
5.2.3 DIP Address
To communicate with the battery, you need to assign an address to the battery
BMS through the DIP switch.
10
Figure 5-3 DIP Switch
Battery
status
Normal/
Abnormal RUN
ALM SOC Indicators Description
- -
-
Green RedGreen Green Green Green -
Power off/
SleepOFF OFF OFF OFF OFF OFF -
Standby Normal Flash 1 OFF According to SOC Flash mode
shown in Table 2
ChargeNormal Flash 2OFF According to SOC -
DischargeNormal ON OFF According to SOC -
Alarm Abnormal
According to
the state of
charge and
discharge
Flash 2According to SOC Recoverable
Error Abnormal OFF ON OFF -

Table 5-6 Correspondence between BMS and DIP Switch
5 Product Introduction
The relationship between DIP address and BMS address as below：
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DIP 1 DIP 2 DIP 3 DIP 4 BMS Address
OFF OFF OFF OFF NC
ON OFF OFF OFF 1
OFF ON OFF OFF 2
ON ON OFF OFF 3
OFF OFF ON OFF 4
ON OFF ON OFF 5
OFF ON ON OFF 6
ON ON ON OFF 7
OFF OFF OFF ON 8
ON OFF OFF ON 9
OFF ON OFF ON 10
ON 11
ON ON 12
OFF ON ON 13
OFF ON ON ON 14
ON ON ON ON 15
ON ON OFF
OFF OFF
ON

Table 5-7 RJ 45 Definition
Table 5-8 Dry Contact Alarm Definition
5 Product Introduction
RJ 45 definition as below：
5.2.4 Communication Port Definition
The module uses the default NC. dry contact to provide alarm signals. The
alarm definition of the dry contact is defined as follows.
5.2.5 Dry Contact Alarm Definition
12
RJ 45Photo Pin Description
1/2/3 NC
4 RS485_A
5 CAN _L
6 CAN_H
7 RS485_B
8 GND
Dry Contact No. Alarm Definition
Dry Contact 1 Single cell voltage is lower than 1V;
Voltage difference between cells is more than 800mV.
Dry Contact 2
940 fault;
NTC disconnection;
Charging and discharging MOS fault.
12345678
The above is the definition of conventional communication，if you have special
needs，please contact the authorized dealer.
NOTE

Table 6-1 Installation
6.1 Tools Preparation
6 Installation
13
Use insulated tools to avoid electric shock. If you use tools without insulation
protection, you need to wrap the exposed metal parts with insulation tape for
insulation treatment.
The following table describes the tools and meters that may be used before
installation.
Manual forklift Electric forklift Electric screw driver Adjustable wrench
Phillips screwdriver Slotted screwdriver Torque wrench Claw Hammer
Socket wrench Multimeter Protective gloves Helmet
Insulated shoes Anti-static gloves Goggles Insulating tape
ATTENTION

Study this manual carefully before any installation of the batteries.
The batteries must only be installed and operated by trained personnel.
Check the quantity of battery and accessories with delivery list.
Check the appearance whether there is damaged or leakage, if any damage is
detected, please do not proceed to the next installation.
14
6 Installation
6.2 Unpacking and Inspection
Make sure to disconnect and isolate the battery from any electrical source,
and then turn on the MCB (switch). Verify that the red ALM LED does not stay on for
more than 30 seconds.
Turn off the switch and continue with the installation.
6.3 Preparing for Installation
16
1 Make sure the battery is in off status.
2 Put the battery into cabinet or rack.
3 Use 4 M6 bolts to fix the battery pack on the cabinet.
4 Take out the grounding wires and connect one end to the ground point of
the battery pack and other end to the ground point of the cabinet.
6.4 Installation
The battery pack should be installed by professionally trained personnel， and
it is strictly forbidden to install it without permission.
Use insulated tools to avoid electric shock. If you use tools without insulation
protection, you need to wrap the exposed metal parts with insulation tape for
insulation treatment.
The battery pack is heavy， and at least 4 manpower must be prepared during
ATTENTION
the transportation and installation process. If possible， please use tools to assist in
handling.

6 Installation
15
Figure 6-3 Connect the Battery Pack Power Cable
6.5 Cable Connection
Figure 6-1Install the Battery Pack
Figure 6-2 Battery Pack Grounding
6.5.1 Cable Connection
Use the negative power cable to connect the negative bus bar with the battery
negative (‘-’) terminal, and use the positive power cable to connect the positive
bus bar with the battery positive (‘+’) terminal.
A. The last power cable connected to the charger or inverter needs to be
configured according to the actual current that may exceed 100A.

Figure 6-4 Connect the Battery Pack Power Cable to Bus-bars
6 Installation
16
B. If the battery total input/output current more than 100A in parallel, the
A. Use the communication cable to connect the battery packs in series through
the RS485/CAN communication port, and connect the battery packs at the end to the
user's RS485/CAN communication port.
Figure 6-5 Connect RS485/CAN Communication Cable
wiring method should configure bus-bars to connect the power cables.
6.5.2 Communication Cable Connection

7.1 Power-on Operation
Wear safety protection equipment to prevent electric shock from causing
electric shock injuries.
Use insulated tools to avoid electric shock.
Communication cables and power cables must be laid separately.
Before connecting cables, make sure that the bus-bars at the user end are in
disconnected state.
Pay attention to the polarity of the battery pack.
ATTENTION
7 Power On
17
B. Assign addresses to battery packs by dialing the dialing keys of the dialing
switch. Please refer to the corresponding relationship between the DIP switch and the
battery pack address.
Please assign the battery pack with CAN communication protocol directly
connected to the user's CAN port to 0, or with RS485 communication protocol
directly connected to the user's RS485 port to 1. The addresses of the remaining
battery packs increase sequentially.
The battery communication cable pins refer to “Table 5-7 RJ 45 Definition”.
1 Power on the charger at the user terminal.
2 Set the lithium battery MCB/Switch to ON (if available).
3 Observe Run/Alarm indicator and judge the battery operating status. If the
RUN indicator of the battery is on and the ALARM indicator is off, indicating that the
battery is working normally. Otherwise indicating the battery is not work, you need
to reconfirm whether the cable is connected well.
NOTE