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ENGLISH
Lynx Smart BMS
rev 12 - 02/2025
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Summary of Contents for Victron energy Lynx Smart BMS 500 M10

  • Page 1 ENGLISH Lynx Smart BMS rev 12 - 02/2025 This manual is also available in HTML5.
  • Page 2: Table Of Contents

    Lynx Smart BMS Table of Contents 1. Introduction ........................... 1 1.1. The Lynx Smart BMS ....................... 1 2. Features ..........................2 2.1. Battery Management System ....................2 2.2. Contactor ........................2 2.3. Built-in pre-charge circuit ....................2 2.4. Battery Monitor ......................2 2.5.
  • Page 3 Lynx Smart BMS 8.2. Requirements and limitations .................... 26 8.3. Electrical connections ..................... 27 8.4. Monitoring and control ....................28 8.5. Frequently Asked Questions (FAQ) ..................29 9. Troubleshooting and Support ....................31 9.1. How to recover from OFF mode when no charge voltage was detected ..........31 9.2.
  • Page 4: Introduction

    Lynx Smart BMS 1. Introduction 1.1. The Lynx Smart BMS The Lynx Smart BMS is a dedicated Battery Management System for Victron Lithium Battery Smart batteries available with a nominal voltage of 12.8V or 25.6V in various capacities. This is the safest of the mainstream lithium battery types. They can be connected in series, parallel and series/parallel so that a battery bank can be built for system voltages of 12V, 24V or 48V.
  • Page 5: Features

    2.4. Battery Monitor The Lynx Smart BMS battery monitor operates in a similar fashion as the other Victron Energy battery monitors. It contains a shunt and battery monitor electronics. Readout of the battery monitor data is via Bluetooth using the VictronConnect App or a GX device and the VRM portal.
  • Page 6: Parallel Redundant Lynx Smart Bms

    Lynx Smart BMS 2.7. Parallel redundant Lynx Smart BMS The new parallel redundancy feature for the Lynx Smart BMS and Lynx Smart BMS NG series allows multiple Lynx BMSes in one installation. Each has its own battery bank, and together they form a single redundant battery system. Up to 5 BMS-es can be paralleled.
  • Page 7: Communication And Interfacing

    Lynx Smart BMS 3. Communication and interfacing The Lynx Smart BMS communicates with other devices and services via a variety of interfaces. The following list provides an overview of the most important interfaces: • Bluetooth: to change settings and monitor the Lynx Smart BMS via our VictronConnect App.
  • Page 8: System Design Considerations And Examples

    Lynx Smart BMS 4. System Design considerations and examples 4.1. Integration into the Lynx Distributor System The Lynx Smart BMS integrates seamlessly with the Lynx Distributor system, which is not mandatory for operation, but highly recommended due to its ease of installation. It is important to note that the battery must always be connected to the left side of the Lynx Smart BMS (in normal position), while all loads and chargers are connected to the right side.
  • Page 9: System Sizing

    Lynx Smart BMS 4.2. System sizing 4.2.1. Current rating Lynx Smart BMS The main safety contactor of the Lynx Smart BMS has a continuous current rating of 500A (1000A for the M10 model) and a peak current rating of 600A (1200A for the M10 model)) for a duration of 5 minutes. Even if the Lynx Smart BMS has an overcurrent protection, make sure that the current rating is not exceeded.
  • Page 10: Installation

    Lynx Smart BMS 5. Installation 5.1. Important warning Lithium batteries are expensive and can be damaged due to over discharge or over charge. The shutdown due to low cell voltage by the BMS should always be used as a last resort to be on the safe side at all times.
  • Page 11: Mechanical Connections

    Lynx Smart BMS 5.3. Mechanical connections 5.3.1. Lynx Smart BMS connection features • The Lynx Smart BMS cover can be opened up by unscrewing the two cover screws. • Removable rubber sleeves to protect the busbar ends. Cover Cover screw screw Removable sleeve Positive busbar...
  • Page 12: Electrical Connections

    Lynx Smart BMS 5.4. Electrical connections 5.4.1. Connect DC wires For all DC connections the following applies: • All cables and wires connected to the Lynx module need to have been fitted with M10 (or M8) cable lugs. • Pay attention to the correct placement and order of the cable lug, washer, spring washer and nut on each bolt when attaching the cable to the bolt.
  • Page 13: Connect Rj10 Cable(S)

    Lynx Smart BMS 5.4.2. Connect RJ10 cable(s) These instructions only apply, if the system contains Lynx Distributor(s). There are two RJ10 connectors in each Lynx module, one on the left and one on the right. See below drawing. RJ10 connector RJ10 connector RJ10 connector RJ10 connector...
  • Page 14: Connect The Multiconnector

    Lynx Smart BMS Lynx Smart BMS battery BMS cable connection examples 5.4.4. Connect the Multiconnector The multiconnector is the green connector on the bottom of the Lynx Smart BMS. The connector of the Lynx Smart BMS 500A has 11 pins, numbered from left to right starting with pin 1 and ending with pin 11, while the connector of the Lynx Smart BMS 1000A has 13 pins - two additional pins (pin 12 and 13) for future functionality.
  • Page 15: Wiring The Remote On/Off

    Lynx Smart BMS For the system to operate correctly, it is essential that all loads and chargers are able to be controlled by either DVCC or the ATC and ATD signals. Ideally wire the ATC and ATD signals to a devices remote on/off connector, or, if that is not available, a Smart BatteryProtect Cyrix-Li...
  • Page 16: Connect The Gx Device

    Lynx Smart BMS 5.4.8. Connect the GX device Connect the Lynx Smart BMS VE.Can port to the GX device VE.Can port using a RJ45 cable. Multiple VE.Can devices can be daisy chained, but make sure that the first and the last VE.Can device both have a VE.Can RJ45 terminator installed.
  • Page 17: Lynx Smart Bms, 1X Lynx Distributor And Lithium Batteries

    Lynx Smart BMS GX touch 50 Inverter/charger Cerbo GX VE.Bus VE.Can VE.Direct Solar charger Lynx Distributor Lynx Smart BMS Lynx Distributor RJ10 cable RJ10 cable DC loads BatteryProtect cables 2 batteries in parallel ATD (allowed-to-discharge) System with Lithium batteries, Lynx Smart BMS and two Lynx Distributors 5.5.2.
  • Page 18: Lynx Smart Bms Only

    Lynx Smart BMS 5.5.3. Lynx Smart BMS only For a very slim line system, the Lynx Smart BMS can be used just by itself. This is usefull if the system contains a single lithium battery or a single series string of lithium batteries together with a simple DC system. Please also note that no GX device is used.
  • Page 19: Configuration And Settings

    Lynx Smart BMS 6. Configuration and settings 6.1. Power up for the first time The Lynx Smart BMS will power up when a battery is connected and the wire loop is placed in between pin 10 and 11 of the multi connector or the Remote on/off switch is switched on.
  • Page 20: Update Firmware

    Lynx Smart BMS 6.2. Update firmware A firmware update of the Lynx Smart BMS can be performed in two different ways: • Via the VictronConnect app • Via the VRM: Remote Firmware Update feature (requires an internet connected GX device) Notes on firmware updating in general •...
  • Page 21 Lynx Smart BMS If the battery capacity input is incorrect, the SoC will also be incorrectly calculated. Make sure the battery capacity calculation is correct. Set the Number of batteries in parallel : • Enter the number of paralleled batteries in the system. The wrong number of parallel batteries will lead to a miscalculation of the balancing algorithm.
  • Page 22: Lynx Distributor Settings

    Lynx Smart BMS • Tail current: the current at below which the battery monitor synchronises and resets the SoC to 100%. For synchronisation to happen, the charged voltage and charge detection time conditions need to have been met as well. The default is set to 4% and can be adjusted if needed.
  • Page 23 Lynx Smart BMS If the dip switches have been accidentally programmed incorrectly or need to be reprogrammed to a different address after commissioning the Lynx Smart BMS, you must restart the BMS (OFF mode and back to Standby or ON mode). This action is necessary to correctly adopt the Lynx Distributor status in VictronConnect and the GX device.
  • Page 24: Commissioning And Operation Of The Lynx Smart Bms

    Lynx Smart BMS 7. Commissioning and Operation of the Lynx Smart BMS 7.1. Commissioning the Lynx Smart BMS Commissioning sequence: Check polarity of all battery cables. Check cross sectional area of all battery cables. Check that each battery has the most up to date firmware. Check that if batteries have been connected in series, each battery has been fully pre-charged (refer to battery manual).
  • Page 25 Lynx Smart BMS Status LED Bluetooth LED Lynx Smart BMS LEDs Commissioning and Operation of the Page 22 Lynx Smart BMS...
  • Page 26: Bms Operating Modes

    Lynx Smart BMS 7.3. BMS operating modes The BMS in the Lynx Smart BMS communicates with the batteries and will safeguard them against low or high cell voltage as well as low or high temperatures. Such events are reported by the battery to the Lynx Smart BMS to take necessary action by turning off loads and/or inverter/chargers and chargers and either turning the Lynx Smart BMS off or on again, fully automatically or manually.
  • Page 27: Lynx Smart Bms Trigger

    Lynx Smart BMS Mode Soft switch VictronConnect app Soft switch GX device Hard wired Remote on/off switch Yes* Standby * Only possible from Standby mode How to manually switch device modes 7.4. Lynx Smart BMS trigger This section describes the behavior of the Lynx Smart BMS in case the pre-alarm threshold is reached or either a low or high cell voltage or low temperature event is triggered.
  • Page 28: Victronconnect-Remote (Vc-R) Support

    Lynx Smart BMS 7.7. VictronConnect-Remote (VC-R) support* VictronConnect-Remote functionality enables the Lynx Smart BMS to be accessed remotely through a GX product, via the VRM portal. This powerful feature allows full product configuration (except Bluetooth) and monitoring from practically anywhere in the world using the VictronConnect app.
  • Page 29: Paralleling Lynx Smart Bmses

    Lynx Smart BMS 8. Paralleling Lynx Smart BMSes 8.1. Introduction A parallel redundant battery bank can be created by combining multiple Lynx Smart BMS and Lynx Smart BMS NG units with their associated battery banks. This innovative feature significantly enhances lithium battery systems by multiplying the maximum energy storage capacity and supporting higher currents.
  • Page 30: Electrical Connections

    Lynx Smart BMS • The overall current limit is always the sum of the limits of the active BMSes. When a BMS disconnects due to an error, the system's total current handling capacity decreases accordingly. 8.3. Electrical connections The BMS and Distributor connections on the Lynx Smart BMS are battery bank local and can be wired as usual. However, there are a few particularities to consider during installation.
  • Page 31: Monitoring And Control

    Lynx Smart BMS Lynx Smart BMS paralleling – operator push button, pre-alarm and GX power detail RELAY Latching COM NC (system) Relay 1 Latching Latching A Diodes are required when connecting Lynx BMS AUX outputs together. For example the DIN-rail mountable ST-1N4007 by Phoenix Contact. B Optional ballast resistor to limit the current through the LED.
  • Page 32: Frequently Asked Questions (Faq)

    Lynx Smart BMS When a BMS powers up, it checks the voltage difference between the online battery and the newly added battery. It remains in 'Pending' state until the voltage difference is small enough to close the contactor safely. This status is displayed in the device list for the respective BMS. When a BMS is in this state, a "system voltage"...
  • Page 33 Lynx Smart BMS Event Behaviour BMS 1: Continues to operate in parallel while communication with the GX device is interrupted BMS 2: Continues to operate in parallel while communication with the GX device is Cable B is interrupted disconnected or For both BMSes: DVCC is not functioning broken because neither BMS can communicate with...
  • Page 34: Troubleshooting And Support

    Should this fail to resolve the issue, contact the point of purchase for technical support. If the point of purchase is unknown, refer to the Victron Energy Support webpage. 9.1. How to recover from OFF mode when no charge voltage was detected This chapter explains how to turn on the BMS (thereby activating the system again) after the BMS has switched to OFF mode when no charge voltage has been detected for 5 minutes after a low cell voltage event or a low SoC shutdown.
  • Page 35: Lynx Smart Bms Operational Issues

    Lynx Smart BMS The Remote on/off switch must be turned on or a wire loop must be inserted between pin 10 and pin 11 of the multi connector. Check that the multi connector is correctly seated. Soft Switch turned off in VictronConnect App Switch the system to ON mode using the soft switch in the VictronConnect app.
  • Page 36: Bms Issues

    Lynx Smart BMS • Contactor voltage monitoring: an alarm is generated when the voltage over the contactor is higher than 0.5V. A high voltage indicates high resistance and high power dissipation, indicating a bad contactor. • Electrical/mechanical protection: there are 2 thermal switches mounted on the busbar. The contactor opens and an alarm is generated when the temperature of the busbars becomes higher than 130°C.
  • Page 37: How To Test If The Bms Is Functional

    Lynx Smart BMS Testing a Lynx Smart BMS by connecting a single BMS extension cable to both BMS cable connections Multiple batteries and BMS check: • Bypass one of the batteries by disconnecting both its BMS cables. • Connect the BMS cables of the neighbouring batteries (or battery and BMS) to each other, effectively bypassing the battery. •...
  • Page 38: Atc/Atd Is Missing

    Lynx Smart BMS 9.4.7. ATC/ATD is missing Error #36 (ATC/ATD error) occurs when discharge current > 1.5A while ATD is disabled or when charge current > 1A while ATC is disabled. This can be caused by loads or chargers that are not controlled by ATC/ATD. Make sure all loads and chargers are controlled by ATC/ATD (if not controlled by DVCC).
  • Page 39: Victronconnect Issues

    Lynx Smart BMS 9.6. VictronConnect issues Interrupted firmware update This is recoverable. Just try to update the firmware again. 9.7. GX device issues This chapter only describes the most common issues. If this chapter does not solve your issue, consult the manual of the GX device.
  • Page 40: Technical Specifications

    Lynx Smart BMS 10. Technical specifications Power Lynx Smart BMS 500A Lynx Smart BMS 1000A Supply voltage range 9 – 60Vdc Supported system voltages 12, 24 or 48V Reverse polarity protection Main safety contactor continuous 500A continuous 1000A continuous current rating Main safety contactor peak current 600A for 5 minutes 1200A for 5 minutes...
  • Page 41 Lynx Smart BMS Standards Lynx Smart BMS 500A Lynx Smart BMS 1000A Safety EN-IEC 63000:2018 EN-IEC 61000-6-3:2007/A1:2011/AC:2012 NEN-EN-ISO 9001:2015 In the previous version the Lynx Smart BMS 500 had an M8 busbar connection Page 38 Technical specifications...
  • Page 42: Appendix

    Lynx Smart BMS 11. Appendix 11.1. LED indications, warnings, alarm and error codes LEDs The Lynx Smart BMS is equipped with two LEDs, the Bluetooth LED and the Status LED. These LEDs will indicate the operation mode and the fault mode in case there is a fault. Bluetooth LED Description No system power or Bluetooth disabled in VictronConnect app.
  • Page 43 Lynx Smart BMS Lynx Smart BMS alarms on the VictronConnect App and a GX device The following tables list all warning, alarm and error codes: Warning codes VictronCo GX device nnect warning Message Instructions / remarks warning code code Low cell Charge the battery or reduce the load to prevent an W-B01 Low cell voltage...
  • Page 44 Lynx Smart BMS VictronCo GX device nnect warning Message Instructions / remarks warning code code Communication with distributor C W-D03 #223 Check the cable between BMS and Distributor. lost Communication with distributor D W-D04 #224 Check the cable between BMS and Distributor. lost Alarm codes VictronCo...
  • Page 45: Supported Nmea 2000

    Lynx Smart BMS VictronCo GX device Message Instruction / remarks nnect alarm code alarm code A-F01 #201 Fuse "Fuse_1" is blown Fuse is blown. Replace fuse. A-F02 #202 Fuse "Fuse_2" is blown A-F03 #203 Fuse "Fuse_3" is blown A-F04 #204 Fuse "Fuse_4"...
  • Page 46: Multiconnector Pin-Out And Overview

    Lynx Smart BMS Description default value adjustable fixed automatic Charge efficiency factor Current threshold 0.05A Low SoC warning level Discharge floor Delta T SoC Cycle end SoC Cycle SoC full discharge * for a 12V/24V/48V system 11.4. Multiconnector pin-out and overview Name Type Function...
  • Page 47 Lynx Smart BMS Menu item Default value / Description and / or possible values unit Switch Soft switch to manually switch the Lynx Smart BMS to Standby or On mode State Running Possible states: Initialising, Pre-charging, Running, Shutdown, Standby Error #0 - No error Error state Battery...
  • Page 48: Enclosure Dimensions

    Lynx Smart BMS 11.6. Enclosure dimensions Dimension Drawing - Lynx Smart BMS LYN034160210 Lynx Smart BMS (M10) 32.3 152.4 10.5 166.5 87.0 166.2 10.8 184.7 80.9 28.9 Dimensions in mm Lynx Smart BMS 500 M10 model enclosure dimensions Page 45 Appendix...
  • Page 49 Lynx Smart BMS Dimension Drawing - Lynx Smart BMS (M10) LYN034170210 Lynx Smart BMS 1000 (M10) 32.0 197.1 10.5 6.5(2x) 166.2 166.5 R2.6 11(2x) R2.6 229.0 100.8 28.8 Dimensions in mm Lynx Smart BMS 1000 M10 model enclosure dimensions Page 46 Appendix...

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