BMZ ESS 7.0 Operating Manual
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BMZ ESS 7.0 Operating Manual

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OPERATING MANUAL ESS 7.0

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Summary of Contents for BMZ ESS 7.0

  • Page 1 OPERATING MANUAL ESS 7.0...
  • Page 2 Version 1.1 Original operating manual...
  • Page 3 This operating manual or parts thereof may not be reproduced in any format (photocopy, micro film or other methods) or used, duplicated or processed with the help of electronic systems without a written consent of BMZ GmbH. In case of violations of these regulations, we reserve the right to claim damage compensation.

  • Page 4: About This Manual

    A qualified electrician must carry out installation, commissioning and maintenance. Please read this operating manual carefully to ensure a fault-free operation of the BMZ ESS 7.0 battery storage system. Please store this operating manual such that it is accessible to all persons who work on the BMZ ESS 7.0 system.

  • Page 5: Table Of Contents

    Table of contents About this manual ..................... 4 Table of contents ....................5 List of figures ....................10 Safety ........................13 Classification of warnings and intended use ........14 1.1.1 Warnings in the operating manual ................14 1.1.2 Intended use ......................15 Safety instructions to be followed ............
  • Page 6 Switching the battery storage system on and off ..........58 4.5.3 Configuring the parameters of the inverter ............60 Preparing the electrical connections for the parallel mode ....61 Connection concept of multiple BMZ ESS 7.0 batteries with one or more battery inverters ..................62 4.7.1 Communication ....................... 62 4.7.2...
  • Page 7 4.9.1 System structure ..................... 75 4.9.2 Addressing the batteries ..................75 4.10 Definition of the battery mode during commissioning and parameter configuration ..................75 4.10.1 Single: ........................75 4.10.2 Master: ........................75 4.10.3 Slave: ........................76 4.11 Work step sequence to configure the parameters of batteries ... 77 4.12 Work step sequence to commission the batteries .......
  • Page 8 Warranty exclusion ................106 Warranty limitation ................106 Warranty time without KfW subsidy ............ 106 Warranty time with KfW subsidy (optional service by BMZ GmbH) .. 107 Area of applicability of warranty ............107 Claiming for damages/warrantor ............107 8.10 Concluding provisions ................. 107...
  • Page 9 Dismantling and disposal ................. 108 9.1.1 Disposal of the battery storage system ..............108 Annexe ....................... 109 10.1 Declaration of conformity ..............110 10.2 Warranty card ..................111 10.3 Installation check list ................112...

  • Page 10: List Of Figures

    List of figures Table 1-1 Hazard instructions, pictograms ................31 Figure 1-2: battery storage system, side view of NH1 isolator ..........32 Table 2-1: delivery scope ......................34 Figure 2-2: battery storage system, front view ............... 35 Figure 2-3: battery storage system, side view ................. 36 Figure 2-4: battery storage system, side view .................
  • Page 11 Figure 4-24: 3-phase operation on 6 ESS batteries ..............74 Figure 4-25: representation of the BMZ ESS service tool ............75 Figure 4-26: representation of the work sequence to configure the parameters of a BMZ ESS battery ..........................77 Figure 4-27: representation of the work sequence to commission a BMZ ESS battery ..78 Figure 4-28: file structure of the BMZ ESS service tool ............
  • Page 12 Figure 4-35: representation of example 2, different SOC of BMZ ESS batteries connected in parallel ..........................85 Figure 4-36: representation of example 3, different SOC of BMZ ESS batteries connected in parallel ..........................85 Figure 4-37: check the number of BMZ ESS batteries connected in parallel ......86 Figure 4-38: check the number of BMZ ESS batteries connected in parallel ......

  • Page 13: Safety

    Safety 1 Safety Target group This section is aimed at all persons, including technical personnel, commissioning and shutdown personnel as well as personnel who work on the battery storage system. Background Safety has utmost priority. Use all aids provided to you along with the measures and processes listed in this section to ensure a safe operation.

  • Page 14: Classification Of Warnings And Intended Use

    Safety 1.1 Classification of warnings and intended use Safety instructions This section described warnings in this operating manual and the intended use of the machine. 1.1.1 Warnings in the operating manual Warnings Warnings serve as instructions and precautionary measures that must be followed and taken to avoid a hazardous situation.

  • Page 15: Intended Use

    Safety 1.1.2 Intended use Intended use of the battery system The BMZ ESS 7.0 system must be exclusively used to store the current generated by the photovoltaic systems. Foreseeable misuse Any other use is considered to be unintended. BMZ GmbH shall not be responsible for damage resulted from this.

  • Page 16: Safety Instructions To Be Followed

    Only use original spare parts in case of repairs or when replacing the parts. Using other parts that do not comply with our specifications may pose risks to persons and the system. BMZ GmbH shall not be liable for personal injuries and/or material damage resulting from changes in the system. Operator Only a qualified electrician may operate/maintain the battery storage system.
  • Page 17 Safety Suitable clothing (PPE) Observe the following instructions regarding suitable clothing.  Always wear protective shoes. Class S3  Always wear ESD protective clothing.  Wear suitable protective gloves.  Wear suitable protective goggles.  Do not carry electrically conductive objects (jewellery, rings, watches, chains) Condition of the battery storage system Keep the battery storage system clean and in an excellent condition.

  • Page 18: Safety Instruction When Working With The Tool

    Safety 1.2.2 Safety instruction when working with the tool Target group These safety instructions are intended for all persons who are entrusted with the transport and installation of the battery storage system. Adhere to the operating manual Always follow the instructions in the operating manual. Working with the tool Adhere to the following warning when using the tool: WARNING...

  • Page 19: Safety Instructions For Transport And Installation

    Safety 1.2.3 Safety instructions for transport and installation Target group These safety instructions are intended for all persons who are entrusted with the transport and installation of the battery storage system. Adhere to the operating manual Always follow the instructions in the operating manual. Adhere to the installation manual Always follow the instructions in the installation manual.
  • Page 20 Safety Safety instructions for transport and installation, continued WARNING Risk due to the loss of static stability There is a risk of injuries due to the weight of the system.  The system may tilt or fall in case of improper transport. ...

  • Page 21: Safety Instructions For Operation

    Safety 1.2.4 Safety instructions for operation Target group These safety instructions are intended for all persons who are authorised to operate the battery storage system. Adhere to the operating manual Always follow the instructions in this operating manual when operating the battery storage system. Safety instructions for operation Only use original parts of the manufacturer or the components approved by the manufacturer for the energy storage unit.
  • Page 22 Safety Prevent these hazardous situations. Otherwise, they will lead to deaths or serious injuries. Safety instructions for operation, continued WARNING Health hazards due to negligent use of personal protective equipment Working without personal protective equipment may cause serious injuries.  Wear personal protective equipment (PPE).

  • Page 23: Safety Instructions For Cleaning

    Safety 1.2.5 Safety instructions for cleaning Target group These safety instructions are intended for all persons who are authorised to clean the battery storage system. Adhere to the operating manual Always follow the instructions in the operating manual when cleaning the battery storage system. Safety instructions for cleaning ATTENTION Risk of damaged machine...

  • Page 24: Safety Instructions For Maintenance And Dismantling

    Safety 1.2.6 Safety instructions for maintenance and dismantling Target group These safety instructions are intended for all persons who are authorised to maintain/dismantle the battery storage system. Adhere to the operating manual Always follow the instructions in this operating manual when maintaining/dismantling the battery storage system.
  • Page 25 Safety switch cabinet. Prevent these hazardous situations. Otherwise, they will lead to deaths or serious injuries. Safety instructions for maintenance/dismantling, continued DANGER Danger due to erupting fire (electric hazard) Fire may erupt during operation due to sparks or heated surfaces. ...

  • Page 26: Safety Instructions For Battery Interiors

    Safety instructions for battery module DANGER Danger due to leaking electrolyte Only the trained experts and persons qualified and approved by BMZ GmbH may work on the battery. Modifications or manipulations in the battery may lead to considerable safety risks and are therefore prohibited.
  • Page 27 Safety Safety instructions for battery module, continued DANGER Danger due to leaking electrolyte The materials / mediums to be used for intended operation of the battery storage system are procured and used by the manufacturer of the system. The manufacturer is thus solely responsible for the proper handling of these materials / mediums and the associated hazards.

  • Page 28: Safety Instructions For Fire Prevention

    Possible risk of life due to electric shock when quenching fire or due to flooding. If you do not observe the following behavioural instructions, they may cause material damage and personal injuries; BMZ GmbH shall not bear any liability in such a case. ...

  • Page 29: Explosion Protection

    Safety Damaged cells and battery Contact the manufacturer. Never operate a potentially or obviously defective battery storage. 1.2.9 Explosion protection General information The battery storage system is de-energised at the time of delivery. Internal connection poles are always live. Therefore, ensure that a tool or a metallic object is not kept in the battery storage system. This could lead to a short-circuit and severe heat formation, which in turn could cause an explosion.

  • Page 30: Data And Safety Devices Of The Battery Storage System

    Safety 1.3 Data and safety devices of the battery storage system Safety instructions The data and devices for the safety of the battery storage system are specified in this section. 1.3.1 General hazard instructions and pictograms Overview Adhere to the safety systems and safety instructions described in this operating manual. Keep the area around the battery storage system free from objects during operation to ensure that unhindered access is always possible.

  • Page 31: Table 1-1 Hazard Instructions, Pictograms

    Safety Warning against electric shock. Do not dispose with household waste. Please return the battery storage system to the manufacturer. Table 1-1 Hazard instructions, pictograms Version 1.0 Page 31 of 113...

  • Page 32: Installed Safety Systems

    Safety 1.3.2 Installed safety systems Overview of safety systems of the battery storage system Description Position NH isolator switch  Connection area: outer housing Figure 1-2: battery storage system, side view of NH1 isolator The externally accessible fuse elements (NH1) ensure the line protection and short-circuit protection. Version 1.0 Page 32 of 113...

  • Page 33: Safety Checks

    Safety 1.3.3 Safety checks General information The following safety checks were conducted by the manufacturer in the factory. Description Position Test scope  Technical test of the battery management system for flawless scope of functions Check whether communication between the battery and the inverter functions. Cell voltage test Temperature sensor test ...

  • Page 34: Function, Delivery Scope And Technical Key Variables

    This energy can then be retrieved later to compensate the daytime-dependent difference between the power generation and power consumption. In combination with a suitable inverter, the BMZ ESS 7.0 system also offers an option of standby power function in case of a mains failure.

  • Page 35: System Overview

    Function, delivery scope and technical key variables 2.3 System overview Battery storage system: Front view Figure 2-2: battery storage system, front view Position Description Battery housing Supporting feet (adjustable height) Air suction Version 1.0 Page 35 of 113...

  • Page 36: Figure 2-3: Battery Storage System, Side View

    Function, delivery scope and technical key variables Battery storage system, side view Figure 2-3: battery storage system, side view Position Description Battery housing Removable side wall with an inspection window and NH1 fuses Supporting feet (adjustable height) Air suction Version 1.0 Page 36 of 113...

  • Page 37: Figure 2-4: Battery Storage System, Side View

    Function, delivery scope and technical key variables Battery storage system, side view Figure 2-4: battery storage system, side view Position Description Battery housing Air suction Supporting feet (adjustable height) Version 1.0 Page 37 of 113...

  • Page 38: Figure 2-5: Battery Storage System, Rear View

    Function, delivery scope and technical key variables Battery storage system, rear view Figure 2-5: battery storage system, rear view Position Description Battery housing Air outlet with fan Supporting feet (adjustable height) RS485 bus for multi-parallel mode USB port PLUS line with 50 mm CAN bus for inverter MINUS line with 50 mm2 Version 1.0...

  • Page 39: Rating Plates And Warning Stickers

    Function, delivery scope and technical key variables 2.4 Rating plates and warning stickers General information The rating plate is provided on the rear side of the battery. Figure 2-6: battery storage system, rear side Version 1.0 Page 39 of 113...

  • Page 40: Figure 2-7: Rating Plate

    Figure 2-7: rating plate Position Description Manufacturer / address QR code (contents: www.bmz-gmbh.de) Safety instruction: Read the operating manual without fail before installation or usage Safety instruction: Do not operate a defective battery Safety instruction: The battery must not become wet.

  • Page 41: Figure 2-9: Battery Storage System, Recycling Symbol

    Function, delivery scope and technical key variables Recycling symbol Figure 2-9: battery storage system, recycling symbol Detailed view Figure 2-10: recycling symbol Version 1.0 Page 41 of 113...

  • Page 42: Technical Key Variables

    Function, delivery scope and technical key variables 2.5 Technical key variables Product data The following table describes the variants of the BMZ ESS 7.0 system: Battery storage Unit BMZ ESS 7.0 BMZ ESS 7.0 Premium Energy content 6.743 6.743 Usable energy content Nominal capacity C10 121.5...

  • Page 43: Transport

    3 Transport 3.1 Safety instructions for transport Target group Safety instructions intended for the installation personnel who transport, install and put the BMZ ESS 7.0 battery storage system in operation. Safety instructions For transporting the battery storage system and when working on electrical devices, please follow the safety instructions from the Safety section, page 13.

  • Page 44: Figure 3-1: Seal Position

    Transport  Take photos for easier documentation.  Write a short fault report.  Never install or operate a potentially or obviously defective battery storage. Check the goods at the time of acceptance Before accepting the goods, check whether the shipment is complete and flawless. The operating manual contains an exact list of all components.

  • Page 45: Figure 3-2: Seal Position

     Place the transport units on a pallet (it must be designed depending on the weight).  Use the original packing material to protect the housing from scratches and transport damage. If you have queries regarding packing and transport safeguarding, please consult BMZ GmbH. Contact Telephone:...
  • Page 46 If this is not done, batteries may get damaged. If this is not done, it will lead to consequential costs which will not be borne by BMZ. The entire time of storage of batteries must be included in the usage duration.
  • Page 47 Transport Transport to the installation site (of the customer)  Only the experts may carry out the transport in accordance with local conditions.  The commercial installer is authorised to transport an energy storage unit without the ADR note for the transport of hazardous goods. ...

  • Page 48: Figure 3-3: Transporting With The Sack Truck

    Transport Transport with a sack truck The sack truck must be designed for the weight of transport units. Step Description Place the energy storage unit, with the contact with the rear wall, on the sack truck. Figure 3-3: transporting with the sack truck Use a soft protective cloth to protect the energy storage unit from scratches.

  • Page 49: Installation, Assembly And Commissioning For The First Time

    4 Installation, assembly and commissioning for the first time General information Only the experts trained by BMZ GmbH may carry out the installation, assembly and first commissioning activities. 4.1 Installation site requirements Installation site The BMZ ESS 7.0 battery storage system is only intended for usage in buildings.

  • Page 50: Figure 4-1 : Requirements For The Installation Site, Distance Of The Ess From Walls, Top View

    Installation, assembly and commissioning for the first time Figure 4-1 : requirements for the installation site, distance of the ESS from walls, top view Figure 4-2 : requirements for the installation site, distance of the ESS from walls, side view The room air must not contain contaminations like suspended particles, metal dust or combustible gases.

  • Page 51: Filling The Warranty Card

    The customer / installer must fill the warranty card carefully; it shall be valid only with a signature and the company stamp. Send the duly filled warranty card to BMZ GmbH. The warranty card is given in the annexe of this manual.

  • Page 52: Installation Of The Battery Storage System

    Installation, assembly and commissioning for the first time 4.4 Installation of the battery storage system Installation steps Proceed as follows to install the battery storage system: Step Description Unpack the battery storage system carefully and check it for transport damage. In case of transport damage, contact the forwarding agent or the manufacturer immediately.
  • Page 53 Installation, assembly and commissioning for the first time Use a suitable lifting device to lift the battery storage system from the pallet (e.g. workshop crane). Position the battery storage system on the installation site. Adhere to the minimum distances from walls. (See section 4.1 Requirements for the installation site) Version 1.1 Page 53 of 113...

  • Page 54: Preparing The Electrical Connections For The Single Mode

    The connection of a battery with an SMA Sunny Island inverter is described below as an example. When using another inverter, please follow the specifications in the corresponding manufacturer’s documentation. Check whether the inverter used by you is approved for use with the BMZ ESS 7.0 battery storage system. Step Description Push the 50 mm²...

  • Page 55: Figure 4-5: Sample Representation Of The Connection Of Plus And Minus Power Cables With The Sma Sunny Island Inverter

    Installation, assembly and commissioning for the first time The 50 mm² connection lines must NOT be connected to incorrect poles. Follow the installation manual of the inverter manufacturer. Connect the power cable of the battery inverter to the poles of the NT isolator. Use the 2 screws of the M8x20 size as well as washers and tension washers.

  • Page 56: Figure 4-7: Battery Storage System, Side View Of The Opened Housing

    Installation, assembly and commissioning for the first time Figure 4-7: battery storage system, side view of the opened housing Change the fuse inserts depending on the inverter to which the battery is connected. Recommendation: SI3.0M-11: 80 A SI4.4M-11: 100 A SI6.0H-11: 160 A SI8.0H-11:...

  • Page 57: Checking The Connections

    Installation, assembly and commissioning for the first time Insert the housing cover in the housing and tighten the screws of the cover. For this purpose, use 2 DIN 7985 M4x6 fillister-head screws. Fix these using a PH2 Phillips screwdriver and a maximum tightening torque of 2.5 Nm (tolerance: +/-0.1 Nm).

  • Page 58: Switching The Battery Storage System On And Off

    Installation, assembly and commissioning for the first time 4.5.2 Switching the battery storage system on and off The battery storage system and the inverter must be correctly installed before they can be put into operation. Switch on the battery storage system using a switch Proceed as follows to start the battery storage system: Step Description...
  • Page 59 Installation, assembly and commissioning for the first time Switch on the battery storage system using an external voltage source Proceed as follows to start the battery storage system: Step Description The external voltage source can be used to switch on the system only if it was not switched off using the push button (press the push button longer than 10 seconds at a stretch).

  • Page 60: Configuring The Parameters Of The Inverter

    20 minutes. 4.5.3 Configuring the parameters of the inverter The inverter parameters must be configured for the BMZ ESS 7.0 battery in order to operate it optimally in combination with the inverter. See section 4.18 Version 1.1...

  • Page 61: Preparing The Electrical Connections For The Parallel Mode

    4.6 Preparing the electrical connections for the parallel mode Definition of parallel mode: Parallel mode means the operation of multiple BMZ ESS 7.0 energy storage systems at one or more inverters. Safety instructions Please follow the safety instructions in the Safety section, page 13.

  • Page 62: Connection Concept Of Multiple Bmz Ess 7.0 Batteries With One Or More Battery Inverters

    Prerequisites for the battery firmware version Batteries can be connected in parallel from firmware version V2.00 onwards. The BMZ Service Tool in a specific version (at least Version 0.0.26) must be used to update the battery to a new firmware version.

  • Page 63: Figure 4-10: Communication Cabling, Ess Parallel Connection

    Installation, assembly and commissioning for the first time Figure 4-10: communication cabling, ESS parallel connection The RS485 bus must be closed with 120 Ohm at both ends Example of a RJ45 T-connector (or even a Y-adapter) with corresponding pin assignment Figure 4-11: RJ45 Y-adapter (even RJ45 T-connector) Version 1.1 Page 63 of 113...

  • Page 64: Output Contact

    Installation, assembly and commissioning for the first time Figure 4-12: pin assignment of RJ45 Y-adapter (T-connector) 4.7.2 Output contact All plus poles of batteries must be laid on a copper rail using the Bat Breaker Box. All minus poles of batteries must be laid on a copper rail using the Bat Breaker Box. Important: A short-circuit between the lines from the plus pole of the battery and the minus pole of the battery must be prevented under any circumstance.

  • Page 65: Figure 4-14: Bat Breaker Box Of Enwitec (Example For 6 Batteries And 3 Inverters) With A Closed Housing

    Installation, assembly and commissioning for the first time Connection of the Connection of the plus poles of minus poles of batteries (6 units) batteries (6 units) Figure 4-14: BAT BREAKER Box of Enwitec (example for 6 batteries and 3 inverters) with a closed housing Version 1.1 Page 65 of 113...

  • Page 66: Figure 4-15: Bat Breaker Box Of Enwitec (Example For 6 Batteries And 3 Inverters) With An Open Housing

    Installation, assembly and commissioning for the first time Connection of the Connection of plus pole of the minus pole of inverter inverter (3 units) (3 units) Connection side of inverter  Cable shoe M10  Maximum Cu cross- section: 95 mm ...

  • Page 67: Figure 4-16: Battery Storage System, Side View, Power Isolator Pulled

    Installation, assembly and commissioning for the first time Important: When interconnecting the output contacts, all fuses (NH1 isolators) of individual batteries and the switch cabinet are removed, and the automats in the BAT BREAKER Box are set to OFF. Figure 4-16: battery storage system, side view, power isolator pulled Version 1.1 Page 67 of 113...

  • Page 68: Laying The Power Cable

    Installation, assembly and commissioning for the first time 4.7.3 Laying the power cable The power cable should be as short as required. The length of the Pack+ and Pack- cables must not exceed the respective maximum lengths. Cables of each battery (plus and minus poles) must always have the equal length. Cables of a battery connected in a parallel circuit must have the equal length between the batteries.

  • Page 69: Configuration Of The Ess Parallel Mode

    4.8 Configuration of the ESS parallel mode Thanks to the modular concept of the BMZ ESS 7.0 system, different configurations of BMZ ESS 7.0 batteries with SMA Sunny Island inverters are possible. 4.8.1 1-phase operation of a SMA Sunny Island inverter on 1 ESS battery...

  • Page 70: 1-Phase Operation Of A Sma Sunny Island Inverter On 3 Ess Batteries

    Installation, assembly and commissioning for the first time 4.8.3 1-phase operation of a SMA Sunny Island inverter on 3 ESS batteries BMZ ESS Battery 1 BAT BREAKER 3er PLUS SMA Sunny Island PLUS Inverter 1 MINUS MINUS RS485 terminating battery mode „MASTER“...

  • Page 71: 3-Phase Operation Of A Sma Sunny Island Inverter On 3 Ess Batteries

    Installation, assembly and commissioning for the first time 4.8.4 3-phase operation of a SMA Sunny Island inverter on 3 ESS batteries BMZ ESS Battery 1 BAT BREAKER 3er PLUS SMA Sunny Island PLUS Inverter 1 MINUS Inverter „MASTER“ MINUS RS485 terminating battery mode „MASTER“...

  • Page 72: 3-Phase Operation Of A Sma Sunny Island Inverter On 4 Ess Batteries

    Installation, assembly and commissioning for the first time 4.8.5 3-phase operation of a SMA Sunny Island inverter on 4 ESS batteries BMZ ESS Battery 1 BAT BREAKER 6er SMA Sunny Island PLUS PLUS Inverter 1 Inverter „MASTER“ MINUS MINUS RS485 terminating battery mode „MASTER“...

  • Page 73: 3-Phase Operation Of A Sma Sunny Island Inverter On 5 Ess Batteries

    Installation, assembly and commissioning for the first time 4.8.6 3-phase operation of a SMA Sunny Island inverter on 5 ESS batteries BMZ ESS Battery 1 BAT BREAKER 6er SMA Sunny Island PLUS PLUS Inverter 1 Inverter „MASTER“ MINUS MINUS RS485 terminating battery mode „MASTER“...

  • Page 74: 3-Phase Operation Of A Sma Sunny Island Inverter On 6 Ess Batteries

    Installation, assembly and commissioning for the first time 4.8.7 3-phase operation of a SMA Sunny Island inverter on 6 ESS batteries BMZ ESS Battery 1 BAT BREAKER 6er SMA Sunny Island PLUS PLUS Inverter 1 Inverter „MASTER“ MINUS MINUS RS485 terminating battery mode „MASTER“...

  • Page 75: Configuration Of The Ess Battery

    The mode is used for the status: 1 BMZ ESS 7.0 battery operated at one SMA Sunny Island inverter. 4.10.2 Master: This is the status of a BMZ ESS 7.0 battery in a group of multiple BMZ ESS 7.0 batteries connected in parallel.

  • Page 76: Slave

    4.10.3 Slave: This is the status of multiple BMZ ESS 7.0 batteries in a group of multiple BMZ ESS 7.0 batteries connected in parallel. Important: Each battery, except the master battery, must be configured as a slave battery.

  • Page 77: Work Step Sequence To Configure The Parameters Of Batteries

    Execute the following steps to configure the parameters of batteries for a system comprising ESS batteries connected in parallel. Figure 4-26: representation of the work sequence to configure the parameters of a BMZ ESS battery Version 1.1 Page 77 of 113...

  • Page 78: Work Step Sequence To Commission The Batteries

    4.12 Work step sequence to commission the batteries Execute the following steps to commission a system comprising ESS batteries connected in parallel. Figure 4-27: representation of the work sequence to commission a BMZ ESS battery Version 1.1 Page 78 of 113...

  • Page 79: Configuration Of Firmware For Parallel Mode

    Figure 4-28: file structure of the BMZ ESS service tool 4.13.1 Setting the master battery mode In a group of multiple BMZ ESS 7.0 batteries connected in parallel, configure one battery as a master. Important: 1. Set the “Master” mode and configure the battery parameters by clicking on “set mode”.

  • Page 80: Setting The Master Battery Address

    1. Set the “address” (device address) to “1” and configure the battery parameters by clicking on “set address”. 2. In a group of multiple BMZ ESS 7.0 batteries connected in parallel, only one battery may have the address “1”. Version 1.1...

  • Page 81: Setting The Slave Battery Mode

    Installation, assembly and commissioning for the first time 4.13.3 Setting the slave battery mode In a group of multiple BMZ ESS 7.0 batteries connected in parallel, configure all batteries, except the master, as slaves. Important: 1. Set the “Slave” mode and configure the battery parameters by clicking on “set mode”.

  • Page 82: Setting The Slave Battery Address

    1. Set the “address” (device address) to “2” and configure the battery parameters by clicking on “set address”. 2. In a group of multiple BMZ ESS 7.0 batteries connected in parallel, only one battery may have the address “2”. 3. Configure a unique and unambiguous address (device address) for all other slave batteries.

  • Page 83: Commissioning The Parallel Connection Of Multiple Batteries

    2. Check whether the main relay of the master battery is switched on -> Check via LED flashing speed (see section 5.1) or BMZ service tool (see section 4.4) 3. If the main relay of the master battery is closed, you can now switch on other slave batteries.

  • Page 84: Example 1

    2 slave batteries are switched on and the main relay is switched on 3 slave batteries are switched on and the main relay is NOT switched on Figure 4-34: representation of example 1, different SOC of BMZ ESS batteries connected in parallel 4.14.5 Example 2:...

  • Page 85: Example 3

    Installation, assembly and commissioning for the first time Figure 4-35: representation of example 2, different SOC of BMZ ESS batteries connected in parallel 4.14.6 Example 3: 6 batteries connected in parallel with different charge statuses: The master battery is switched on and the main relay is switched on...

  • Page 86: Checking The Parallel Connection Of Multiple Batteries

    The “Detected devices” number shows the number of batteries connected to the master (and that are in the stand-by mode). Figure 4-37: check the number of BMZ ESS batteries connected in parallel Other test criterion: The LED of a battery in the stand-by mode flashes green.

  • Page 87: Check The Number Of Batteries For Which The Main Relay Is Closed

    Other test criterion: The LED of a battery in the parallel mode (active) continuously lights up in green. 4.16 Adding new batteries BMZ allows subsequent extensions of the battery system until six months after the first installation. 1) Configure a new battery as a slave...

  • Page 88: Checking The Connections Of Parallel Battery Systems

    Installation, assembly and commissioning for the first time 4.17 Checking the connections of parallel battery systems Check the connections as per the exact specifications in the installation check list given in the annexe. 4.17.1 Switching the battery storage system on and off The battery storage system and the inverter must be correctly installed before they can be put into operation.
  • Page 89 1. Check whether the main relay of the master battery is switched on -> Check via LED flashing speed (see section 5.1) or BMZ service tool (see section 5.2) 2. If the main relay of the master battery is closed, you can now switch on other slave batteries.

  • Page 90: Configuring The Parameters Of The Inverter

    Switching on the battery storage system using an external voltage source 4.17.1 Configuring the parameters of the inverter The inverter parameters must be configured for the BMZ ESS 7.0 battery in order to operate it optimally in combination with the inverter.

  • Page 91: Recommended Parameters Of The Sma Sunny Island Inverter At The Time Of Installation

    Installation, assembly and commissioning for the first time 4.18 Recommended parameters of the SMA Sunny Island inverter at the time of installation: In order to ensure the optimum working range of the battery and to optimise the quantity of storable energy, the battery manufacturer has given the following recommendations for the parameters of the inverter: A detailed description of parameters is given in the operating manual of your SMA Sunny Island...

  • Page 92: Figure 4-39: Sma On-Grid Parameters

    Installation, assembly and commissioning for the first time Number Name Value 261.03 Season enable 262.01 ProtResSOC 262.02 BatResSOC 262.03 BUResSOC 262.04 PVResSOC 262.05 MinSlfCsmpSOC Figure 4-39: SMA on-grid parameters In order to optimise the efficiency of the battery, the battery automatically executes a learning cycle at periodic intervals, wherein the actually usable capacity of the battery is automatically determined.

  • Page 93: Off-Grid Application

    Installation, assembly and commissioning for the first time 4.18.2 Off-grid application In the expert mode, set the following parameters when installing the inverter: Number Name Value Diesel generator start 12% SOC Load shedding of relay 10% SOC Bat Pro 3 7% SOC Bat Pro 2 5% SOC...

  • Page 94: Operation And Service Software

     For example, the temperature is too high  For example, the temperature is too low Please contact the BMZ Service immediately (see section (7)) Slowly flashing The battery is switched on, but no communication with the inverter.  (Countdown of 20 minutes until the battery is switched off)

  • Page 95: Charging Status Indicator

    Open the screws on the service flat using a PH2 screwdriver. Loosen and remove the upper fillister-head screw of the lateral service flap. Figure 5-2: side view of BMZ ESS, service flap Now push the flap of the side panel upwards to remove it.

  • Page 96: Figure 5-4: Usb Communication

    Connect the USB cable directly from the battery storage system. Figure 5-5: USB port of BMZ ESS battery, inner side of housing Loosen the cable binder of the USB cable carefully using a side cutter and pull the USB plug internally from the socket (rear wall).

  • Page 97: Figure 5-6: Push Button And Leds

    Operation and service software The notebook must not be connected with the AC grid via the charging cable. Switch on the battery storage system using the push button. Figure 5-6: push button and LEDs The service software can now be installed and started. Version 1.1 Page 97 of 113...

  • Page 98: Service Software

    Download log files (for sending to the Service Department via email)  Prepare PDF report (actual status of the battery) For more information regarding the service software, please refer to the operating manual of the BMZ service tool. It is a separate document. Please contact BMZ GmbH for this purpose.

  • Page 99: Fault/Damage Event

    Fault/damage event 6 Fault/damage event 6.1 Fault indicators 6.1.1 Fault indicators of pilot lamps Fault indicators of pilot lamps Two LEDs are provided on the battery storage system. In case of errors in the battery storage system, they either individually flash in red or flash together in red and green.

  • Page 100: Actions To Be Taken In Case Of A Damage

    WARNING Possible risk to life due to leaking electrolytes. If you do not observe the following behavioural instructions, they may cause material damage and personal injuries; BMZ GmbH shall not bear any liability in such a case.  Switch off the battery storage system if it is possible without any risk.
  • Page 101 Fault/damage event  Do not touch the injured person until the de-energised status of the system is ensured  Take freely lying live cables away from the injured person using non-conductor objects  Ensuring breathing and the functioning of cardiovascular system is utmost important in case of unconscious patients.

  • Page 102: Service And Maintenance Activities

    BMZ GmbH. If you have any queries regarding this, please contact BMZ Service. BMZ Service Centre If you have queries regarding the BMZ ESS 7.0 system or require help, you can always contact the BMZ Service Centre. Business hours...

  • Page 103: Complaint Handling

    2. BMZ Service asks solar technicians for the data of the memory (SN, pdf report and log file) -> service tool is required. 3. If it is not available, BMZ Service will send you the latest FW of the service tool and the complaint order free of charge.

  • Page 104: Warranty Conditions

    8 Warranty conditions Preamble Solar energy generated in excess of current needs is stored by the new modular lithium-ion battery ESS 7.0 for later use. BMZ GmbH is entirely focused on the high quality of its products. Production meets highest quality requirements and is subject to permanent control of BMZ GmbH's quality management.

  • Page 105: Warranty Service

    Warranty conditions 8.3 Warranty service In case of a warranty claim, BMZ GmbH will choose to either expertly repair the product or replace it with a new/equivalent product. BMZ GmbH will take ownership of replaced products. Under this warranty, BMZ will replace a defective BMZ battery as follows:...

  • Page 106: Warranty Exclusion

    The warranty period shall start on the day the end-use customer starts using the BMZ battery but not later than 6 months after handing it over with reference to the date on the delivery ticket.

  • Page 107: Warranty Time With Kfw Subsidy (Optional Service By Bmz Gmbh)

    The warranty period shall start on the day the end-use customer starts using the BMZ battery but not later than 6 months after handing it over with reference to the date on the delivery ticket.

  • Page 108: Dismantling And Disposal

    9.1.1 Disposal of the battery storage system Risk of damage Only the experts should dismantle the system. Used batteries are collected by the distributor. Please contact the BMZ Service Centre (Tel: +49 (0)6188 99 56 9830, email: ess.service@bmz-gmbh.de) regarding used batteries. CAUTION WARNING AGAINST POISONOUS MATERIALS.

  • Page 109: Annexe

    Annexe 10 Annexe Overview The annexe contains the following documents:  Declaration of conformity  Warranty card  Installation check list Version 1.1 Page 109 of 113...

  • Page 110: Declaration Of Conformity

    Annexe 10.1 Declaration of conformity Figure 10-1: EC Declaration of Conformity Version 1.1 Page 110 of 113...

  • Page 111: Warranty Card

    Annexe 10.2 Warranty card Figure 10-2: warranty card Version 1.1 Page 111 of 113...

  • Page 112: Installation Check List

    Annexe 10.3 Installation check list Figure 10-3: installation check list Version 1.1 Page 112 of 113...

  • Page 113: Figure 10-4: Installation Check List, Part 2

    Annexe Figure 10-4: installation check list, part 2 Version 1.1 Page 113 of 113...

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