Lynx Smart BMS 1000 NG (M10) Victron - LYN034170310

Lynx Smart BMS 1000 NG (M10) Victron - LYN034170310

The Lynx Smart BMS 1000 NG (M10) Victron - LYN034170310 is a battery management system (BMS) designed specifically for the NG series of batteries, Victron's new range of lithium batteries. These LiFePO4 batteries are available in 12.8V, 25.6V and 51.2V and in different capacities.

Up to 50 lithium batteries can be connected per BMS NG. For a 12V system this means a maximum energy storage of 192 kWh and up to 384 kWh in both 24V and 48V systems. This capacity can be multiplied by connecting several NG BMSs in parallel to create a redundant battery bank.

Among the various BMS available for the new NG lithium batteries, the Lynx Smart BMS NG is the most comprehensive option and integrates easily with other M10 products in the Lynx distribution system.

Lynx Smart BMS 1000 NG (M10) specifications

• Battery voltage range: 9 - 60 VDC
• Maximum input voltage: 75 VDC
• Accepted system stresses: 12, 24 or 48 V
• Reverse polarity protection: No
• Rated continuous current of the main safety contactor: 1000 A continuous
• Peak current of the rated main safety contactor: 1200 A for 5 minutes
• Power consumption in OFF mode: 0,3 mA for all system voltages
• Standby power consumption: Approximately 0.6 W (50 mA at 12 V)
• Power consumption in ON mode: Approximately 4.2 W (350 mA at 12 V) depending on the relay status
• Minimum load resistance for pre-loading:
  • 10 Ω and above for 12 V systems
  • 20 Ω and above for 24 V and 48 V systems
• Maximum rated current of the AUX output: 1.1 A continuous, protected by a resettable fuse
• ATC port (enable charging) Maximum rated current: 0.5 A at 60 VDC, protected with a resettable fuse
• ATD port (enable discharge) Maximum rated current: 0.5 A at 60 VDC, protected with a resettable fuse
• Single-pole double-touch alarm relay (SPDT) Maximum rated current: 2 A at 60 VDC

Features of the BMS 1000 NG

Pre-charge circuit

• Prevents high inrush currents when connecting capacitive loads such as inverters.
• No external preloading devices are required.

Integrated contactor

• This is a secondary safety system to protect the battery in the event of failure of the main controls (ATC, ATD and/or DVCC).
• Remote controllable system main switch.

Closed-loop control DVCC and ATC/ATD contacts

• A connected GX device and DVCC controls compatible Victron inverter/chargers, the Orion XS 12/12-50 A converter and solar charge controllers.
• The ATC (allow charge)/ATD (allow discharge) contacts are for controlling other chargers and loads that have a remote on/off port.

Communication and interfaces

• Integrated Bluetooth to connect to the VictronConnect App.
• It also has a VE.Can port for connecting to GX devices and monitoring the system via the Victron VRM portal.
• Allows integration into marine networks via NMEA 2000 protocol (a male micro-C VE.Can to NMEA 2000 cable is required).
• With integrated battery monitor that provides data such as state of charge, voltage, current, historical data and status information, in real time.
• Diagnostics at a glance with Instant Readout.
• Fuse status monitoring of up to four Lynx distributors connected via VictronConnect or GX devices.
• Reception of alarms in the event of a blown fuse.

Lynx Smart BMS redundant parallel BMS

• New parallel redundancy option for Lynx Smart BMS and Lynx Smart BMS NG series: allows for multiple Lynx BMS in one installation. Each with its own battery bank and together they form a single redundant battery system. Up to five BMS can be connected in parallel.

AUX terminal

• On-board auxiliary power supply (1.1 A at system voltage) to provide power to individual loads after the BMS has shut down.
• Automatic shutdown of the BMS and AUX connection if no charging voltage is detected within 5 minutes in the event of low voltage.

Programmable relay

• It can be used as an alarm relay (together with the pre-alarm) or to control an alternator via its external regulator (ignition cable).
• An ATC alternator mode is available to safely disconnect the alternator before the battery is disconnected.

Connections of the BMS NG 1000A

• Muddy: M10 (Torque: 33 Nm) - can be combined with all Lynx M10 products.
• VE.Can: RJ45
• I/O: Removable multi-connector with screw terminals.
• Battery BTV cables: 3-pole circular male and female connector with M8 screw ring. Up to 50 batteries can be connected in one system.
• Lynx distributor fuse monitoring (up to four modules): RJ10 (one cable is supplied with each Lynx distributor).

Working conditions

• Working temperature range: -40 °C to +60 °C
• Storage temperature: -40 °C to +60 °C
• Humidity (non-condensing): Max. 95 %
• Protection class: IP22

Overview of Lynx Smart BMS 1000 NG

• Housing material: ABS
• Housing dimensions: 230 x 180 x 100 mm
• Weight: 2,7 kg
• Busbar material: Tinned copper
• Busbar dimensions: 8 x 30 mm
• Standards:
  • Security: EN-IEC 63000:2018
  • EMC: EN-IEC 61000-6-3:2007/A1:2011/AC:2012
  • QMS: NEN-EN-ISO 9001:2015

Installation of Lynx BMS NG

System sizing

The BMS NG has a rated continuous current of 1000 A and a rated peak current of 1200 A with a duration of 5 minutes. It must be ensured that the rated current is not exceeded. If the peak current limit or the 5-minute interval is exceeded:

• An overcurrent alarm will be generated.
• ATC or ATD is disabled after 30 seconds.

This table shows the power rating of a Lynx Smart BMS NG at different voltages:

Assembly

The materials required and the order of installation is the same for both interconnecting Lynx modules and connecting the DC cables. Both must have M10 terminals.

The first thing to be fitted is the end of the Lynx busbar or DC cable, then the washer, the spring washer and the screw nut. The nuts have to be tightened with a torque of 33 Nm.

The busbar ends of the Lynx busbars are fitted with rubber busbar protectors which should be left on if nothing is to be connected.

Connecting the BMS cables

If multiple batteries are used (a BMS NG can manage up to 50 batteries), first connect the BMS cables of the lithium battery and then connect the BMS cable of the first and last battery to the BMS connectors of the Lynx Smart BMS NG.

Connecting the multi-connector

The Lynx Smart BMS NG multi-connector has 13 pins numbered from left to right. Pins 12 and 13 are reserved for future functions, nothing should be connected to them.

• Pins 1 and 2 AUX:
  • To provide voltage to other pins.
• Pins 3 and 4 ATC (Allow Load)
  • To control system chargers that have a remote on/off connector.
  • They can also be used as remote switches, such as to control a Smart BatteryProtect to switch off loads in case of low cell voltage or a charger in case of low temperature.
• Pins 5 and 6 ATD (Allow discharge):
  • To control system loads that have a remote on/off connector.
  • A common example is to provide +12 V connected from AUX + (equal to the system voltage) to pin 3 and pin 5. This provides an active high signal to the connected remote H-ports of the chargers and loads via pin 4 respectively pin 6. In case of low cell voltage, ATD opens the contact between pin 5 and pin 6. The load is then switched off to prevent further discharge. If the temperature is too low for charging, the ATC contact between pin 3 and pin 4 opens and switches off the chargers. Instead of using the system voltage at AUX +, the system negative at AUX - can be used to generate an active L-signal. The function is the same as described above, except that the low signal ensures that the loads and chargers are turned off. The active L signal can then be connected to the remote L terminals of a charger or load. Unlike the H signal, the system negative is also present if the contactor opens and the Lynx Smart BMS NG enters OFF mode.

• Pins 7,8 and 9 RELAY:
  • Single pole touch relay with three contacts.
  • Common (COM), normally closed (NC), normally open (NO).
  • The relay makes contact between COM and NC when it is not active, while COM and NO make contact when the relay has been activated.
  • An audible device, visible device or the signal line (normally the ignition cable) can be connected to the ATC signal from an external alternator regulator.

• Pins 10 and 11 REM:
  • An on/off switch can be connected to remotely switch the Lynx Smart BMS NG on and off. The pre-installed metal ring must be removed.
  • The H terminal (pin 10) is energised, usually the positive of the battery and the L terminal (pin 11) must be grounded, usually the negative of the NG lithium battery.
  • The maximum voltage is 70V and the minimum voltage is -70V.
  • Power level of pin 10 (H terminal) > 3V.
  • Power level of pin 11 (L terminal) < 5V.

Connecting the GX device
An RJ45 cable is used to connect the VE.Can port of the Lynx Smart BMS to the VE.Can port of the GX device.

Example installation of Lynx Smart BMS NG

When the system has only one lithium battery or a single series string of lithium batteries together with a single DC system.

Without a GX device, it is impossible to control inverter/chargers and DVCC-compatible MPPTs via DVCC, although it is not essential for the operation of the BMS NG.

Integration into the Lynx distributor system

The NG battery should always be connected to the left side of the Lynx Smart BMS NG and all loads and chargers are connected to the right side.

The following picture shows a system with two Lynx Distributors and the BMS NG. They form a continuous busbar with fused battery connections, battery monitor, BMS system, connector and fused load connections.

Each Lynx module has two RJ10 connectors, one on the left and one on the right.

• The end of the RJ10 cable must be plugged into the RJ10 connector on the Lynx distributor, with the retaining clip on the RJ10 connector facing away from the RJ10 connector.
• The RJ10 cable is passed through the slot on the bottom of the Lynx distributor and the RJ10 cable is plugged into the RJ10 connector on the bottom of the Lynx Smart BMS NG.

Example of an installation of BMS NG and NG batteries with the Lynx Distributor system.

This system consists of:

• A Cerbo GX and a GX Touch screen.
• 2 LiFePO4 NG batteries in parallel.
• A battery protector.
• 2 Lynx Distributor M10.
  • Provides fused connections for inverter/chargers, loads and chargers.
• Lynx Smart BMS NG 500 A with BMS, contactor and battery monitor.
• An inverter, an MPPT and solar panels.
• DC loads.

If you want to create a redundant battery bank, see section 6 of the NG 1000A BMS manual (link at the end of the sheet).

List of materials required for installation

• To monitor the system remotely, it is necessary to install a GX device, such as the Victron Cerbo GX Monitoring - BPP900450100. 
  • An RJ45 cable is required to connect it to the BMS: Victron UTP RJ45 RJ45 Cable 3m - ASS030064980.
  • And the Victron VRM Portal, to control all parameters.
• Download the VictronConnect App to monitor the BMS via Bluetooth connection
• If you need extension cables to connect the lithium batteries to the BMS: Victron cable with 3-pole M8 male/female circular connector 5 m - ASS030560500
• And for integration into marine networks using the NMEA 2000 protocol, you need the Victron micro-C male Victron VE.Can to NMEA 2000 cable - ASS030520200

Commissioning of the BMS NG

First ignition
The Lynx Smart BMS NG will turn on when an NG lithium battery is connected, the metal ring is placed on pins 10 and 11 of the multi-connector or the remote on/off switch is turned on.

The Lynx Smart BMS NG automatically determines and sets these settings:

• System voltage, 12, 24 or 48 V, by measuring the battery voltage.
• Number of batteries arranged in parallel, series and parallel/series combination.
• Number of cells per battery.
• Pre-alarm mode enabled by default. In the event of a pre-alarm, a visual or audible device linked to the programmable relay is activated.

Other adjustments:

• Relay mode:
  • Alarm relay mode:
    • Intermittent operation, relay switches on and off every 0.8 seconds.
    • Continuous operation.
  • Alternator ATC mode, the relay is only activated when the contactor is closed.
    • Before the contactor opens, the ATC Alternator opens first and two seconds later the contactor opens. These two seconds ensure that the alternator regulator is switched off before the battery is disconnected from the system.
  • DVCC settings:
    • Pre-alarm discharge current limit:
      • Disabled by default.
      • If activated: the discharge current limit is set to 0 A in case of pre-alarm, while the ATC contact (enable load) remains closed.
    • Absorption time: 2 hours
    • State-of-charge threshold: 70%
    • Repeated uptake interval: 30 days
      • Refers to the number of days after which a new full charge cycle is initiated if the state of charge of the battery does not fall below the state of charge threshold.
  • Battery monitor settings:
    • Almost all settings are fixed and cannot be adjusted, as the Lynx Smart BMS NG is specially designed for NG lithium batteries.
    • More information can be found in section 4.3 of the manual (link below).

Update

Updating the Lynx Smart BMS NG firmware can be done in two ways:

• Via the VictronConnect app.
• Through the VRM portal: Remote firmware update (requires a GX device connected to the Internet).

Start-up sequence

In section 5 of the manual you will find the necessary checklist for commissioning.

Lynx Smart BMS 1000 NG Victron Features

Functions performed by the BMS NG:

The BMS NG has two ways of controlling loads and chargers:

• Sending an electrical or digital on/off signal to the charger or load.
• By physically connecting or disconnecting a load or charging source from the battery. Directly or by using a BatteryProtect or a Cyrix Li-ion relay.

The Lynx Smart BMS NG is used in systems containing DC and AC loads via inverters or inverter/chargers, for example in boats or caravans. 

• In case of low cell voltage, the BMS NG will send a "load disconnect" signal to switch off the load(s).
• Before shutting down a load, it will send a pre-alarm signal indicating impending low cell voltage.
• In case of high cell voltage or low or high battery temperature, the BMS NG will send a "load disconnect" signal to switch off the charger(s).
• If the batteries are further discharged (or overcharged), the contactor will open, effectively disconnecting the DC system to protect the batteries.

Lynx Smart BMS 1000 NG (M10) Victron Manual and Datasheet - LYN034160310

For more information, here is the BMS NG manual and datasheet:

Lynx Smart BMS 1000 NG (M10) Manual - LYN034160310

Lynx Smart BMS 1000 NG (M10) Victron technical datasheet