DISCOVER LYNK II User manual

1805-0053 REV A
(950-0025)
MORNINGSTAR
MANUAL
READ AND SAVETHESE INSTRUCTIONS

2
INTRODUCTION ........................................................................3
1. AUDIENCE, WARNINGS, MESSAGES, GENERAL SAFETY, PERSONAL PROTECTIVE EQUIPMENT ...3
1.1 Audience.................................................................3
1.2 Warning, Caution, Notice, and Note Messages..................................3
1.3 General Warnings .........................................................4
1.4 Safe Handling Procedures...................................................4
1.5 Personal Protective Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
2. DOCUMENTATION...................................................................5
3. OVERVIEW .........................................................................6
3.1 System Overview..........................................................6
3.2 Compatibility .............................................................7
3.3 Minimum Battery System Capacity ...........................................8
4. CAN HARDWARE TERMINATION AND CAN OUT PIN CONFIGURATION.....................9
4.1 LYNK II CANTermination ....................................................9
4.2 LYNK II CAN Out - RJ45 Pin Assignments for Morningstar Integration..............10
5. INSTALLING AND CONNECTING LYNK II TO THE MORNINGSTAR NETWORK............... 11
5.1 Networking Discover Lithium Batteries with LYNK II ............................11
5.2 Connecting LYNK II to the Morningstar Network ...............................12
6. ENABLING LYNK II TO COMMUNICATE WITH MORNINGSTAR DEVICES ................... 14
6.1 Setting Morningstar as the LYNK II Communication Protocol .....................14
7. GENSTAR MPPT CONFIGURATION SETTINGS.......................................... 15
7.1 Commissioning the GenStar MPPT ..........................................15
7.2 Setting up from the Meter Interface ..........................................15
7.3 Setting up from the LiveView Web Interface ...................................16
7.4 Verifying the Connection...................................................19
7.5 Open-Loop Configuration ..................................................20

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INTRODUCTION
This Application Note provides information about integrating LYNK and AEbus
network-enabled Discover Lithium Batteries using the LYNK II Communication
Gateway with Morningstar power conversion devices.
1. AUDIENCE, WARNINGS, MESSAGES, GENERAL SAFETY, PERSONAL
PROTECTIVE EQUIPMENT
1.1 Audience
Configuration, installations, service, and operating tasks should only be performed
by qualified personnel in consultation with local authorities having jurisdiction
and authorized dealers. Qualified personnel should have training, knowledge, and
experience in the:
• Installation of electrical equipment
• Application of electrical codes, safety, and installation standards
• Analysis and reduction of hazards involved in performing electrical work
• Installation and configuration of batteries
• Installation and configuration of systems activated by relays
1.2 Warning, Caution, Notice, and Note Messages
Messages in this manual are formatted according to this structure.
Additional information concerning important procedures and features of
the product. Read all the instructions before installation, operation, and
maintenance.
Important information regarding hazardous conditions.
WARNING
Important information regarding hazardous conditions that may result in personal
injury or death.
CAUTION
Important information regarding hazardous conditions that may result in personal
injury.
NOTICE
Important information regarding conditions that may damage the equipment but
not result in personal injury.
NOTE
Ad hoc information concerning important procedures and features unrelated to
personal injury or equipment damage.

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1.3 General Warnings
WARNING
ELECTRIC SHOCK AND FIRE HAZARD
• This equipment must only be installed as specified.
• Do not disassemble or modify the battery.
• If the battery case has been damaged, do not touch exposed contents.
• There are no user-serviceable parts inside.
Failure to follow these instructions may result in death or serious injury.
WARNING
ELECTRIC SHOCK AND FIRE HAZARD
Do not lay tools or other metal parts on the battery or across the terminals.
Failure to follow these instructions may result in death or serious injury.
CAUTION
ELECTRIC SHOCK
• Do not touch the energized surfaces of any electrical component in the battery
system.
• Before servicing the battery, follow all procedures to fully de-energize the battery
system.
• Follow the “Safe Handling Procedures” below when working with the battery.
Failure to follow these instructions may result in injury.
1.4 Safe Handling Procedures
Before using the battery and any power electronics, read all instructions and
cautionary markings on all components and appropriate sections of their manuals.
• Use personal protective equipment when working with batteries.
• Do not dispose of the battery in a fire.
• Promptly dispose of or recycle used batteries following local regulations.
• Do not disassemble, open, crush, bend, deform, puncture, or shred.
• Do not modify, re-manufacture, or attempt to insert foreign objects into the
battery, immerse or expose the battery to water or other liquids, fire, explosion,
or other hazards. If the user suspects damage to the battery module due to water,
heat, or other reason, take it to a service center for inspection.
• Only use the battery for the system for which it is specified.
• Do not lift or carry the battery while in operation.
• When lifting a heavy battery, follow the appropriate standards.
• Only lift, move, or mount following local regulations.
• Take care when handling battery terminals and cabling.
• Only use the battery with a charging system that meets specifications. Using a
battery or charger that does not meet specifications may present a risk of fire,
explosion, leakage, or other hazards.

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• Do not short-circuit a battery or allow metallic conductive objects to contact
battery terminals.
• Replace the battery only with another battery that has been qualified for the
system. Using an unqualified battery may present a risk of fire, explosion,
leakage, or other hazards.
• Do not drop the device or battery. If the device or battery is dropped, especially
on a hard surface, and the user suspects damage, take it to a service center for
inspection.
1.5 Personal Protective Equipment
When handling or working near a battery:
• Use Personal Protective Equipment, including clothing, glasses, insulated gloves,
and boots.
• Do not wear rings, watches, bracelets, or necklaces.
2. DOCUMENTATION
This Application Note provides information about integrating LYNK and AEbus
network-enabled Discover Lithium Batteries using the LYNK II Communication
Gateway with Morningstar power conversion devices.
Before installation and configuration, consult the relevant product documentation,
including Manuals, Application Notes, and Installation and Configuration Guides.
Morningstar Documentation
Visit https://www.morningstarcorp.com for the most recent version of published
documents.
Discover Energy Systems Documentation
Visit https://www.discoverlithium.com for the most recent version of published
documents, including Discover Lithium battery user manuals and the LYNK II
Installation and Operation Manual (805-0033).

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3. OVERVIEW
This manual provides general settings and is not a comprehensive guide to the
programming and configuration of a specific installation. An installation may have
unique conditions or use cases that require modification or adaptations. Installers
must be capable of reviewing and adapting to the specifics of an installation and its
specific use case and optimizing settings where needed.
The key steps required to install and configure the LYNK II Communication Gateway
with compatible Discover Lithium batteries and power conversion equipment are as
follows:
• Review and confirm equipment compatibility and correct sizing.
• Configure the LYNK II CAN out pins to match the CAN in pins of the power
conversion equipment.
• Mount the LYNK II, connect the battery communication network to either the
LYNK Port or AEbus Port, and then connect the CAN Out Port to the power
conversion equipment’s communication network.
• Terminate all networks correctly.
• When commissioning the power conversion equipment, select the Discover
Energy Systems battery model and the battery’s LVD-LVR Profile.
• Set the LYNK II using LYNK ACCESS software to the correct protocol to enable
closed-loop communication between the Discover batteries and the power
conversion equipment.
• Set up the closed-loop configuration parameters on the power conversion
equipment.
• Set up user preferences and enable the use case using the power conversion
control system.
3.1 System Overview
The LYNK II Communication Gateway unlocks the full potential of a Discover
Lithium battery by enabling the internal Battery Management System (BMS)
to provide real-time data in a closed-loop configuration to other devices. This
configuration allows hybrid inverter-chargers and solar charge controller systems
to optimize control over the charging process in solar applications. LYNK II also
enables the remote monitoring of Discover Lithium battery SOC and data logging
of multiple sites using the data monitoring services offered by off-grid inverter
systems.
Discover Lithium batteries must be set up to work with power conversion and
monitoring devices in either an open-loop or closed-loop configuration.
In an open-loop configuration, charge and discharge settings are set up manually
through the controller for the power conversion device at the time of installation.
In a closed-loop configuration, the BMS of the Discover Lithium battery sends the
battery status over a network data connection with the power conversion device.
Power conversion devices use the Discover Lithium battery BMS data to fine-tune
the output of their charger as well as deliver other functional controls based on
battery voltage, temperature, and percent State-of-Charge.

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If communication between the BMS and Morningstar power conversion device is
interrupted, the power conversion device faults after a few seconds and stops the
charging process. If communication between the BMS and the Morningstar power
conversion device is restored, the fault is cleared and charging continues.
NETWORK
TERMINATOR
NETWORK
TERMINATOR
Figure 1. LYNK II communication with GenStar MPPT using a ReadyBMS Module
3.2 Compatibility
LYNK II Communication Gateway is compatible with the following:
Discover Lithium Batteries
To communicate with a LYNK II device, a Discover Energy Systems battery must
have a compatible network port, such as a LYNK Port or AEbus Port.
• AES LiFePO4: 44-24-2800, 44-48-3000, 42-48-6650
• AES PROFESSIONAL: DLP-GC2-12V, DLP-GC2-24V, DLP-GC2-48V
• AES RACKMOUNT: 48-48-5120, 48-48-5120-H
Morningstar Products
GenStar MPPT:
• GS-MPPT-60M-200V
• GS-MPPT-80M-200V
• GS-MPPT-100M-200V

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3.3 Minimum Battery System Capacity
The Discover Lithium Battery and Morningstar device automatically manages
battery charge and discharge rates. Configure the Discover batteries in the GenStar
MPPT so that the MPPT can resize the charge current to match the batteries to keep
within the operational limit of installed batteries.
For optimal energy usage, battery capacity should accept the maximum charge
current of the system. Derive this value by adding the charge capacities of all the
solar charge controllers in the system.
Morningstar 48V
System
Continuous
Max Amps
DC
(1)
44-48-3000
Minimum per
MPPT
(2)
42-48-6650
Minimum per
MPPT
(3)
DLP-GC2-48V
Minimum per
MPPT
(4)
48-48-5120
Minimum per
MPPT
(5)
GS-MPPT-60M-200V 60 A 2131
GS-MPPT-80M-200V 80 A 2131
GS-MPPT-100M-200V 100 A 2142
(1) Data based on max amps in GenStar MPPT datasheet, Control #MS-003676 01/30/2022.
(2) Discover 44-48-3000 Battery, Max Continuous Charge Current: 57 Adc, as published in Operating
Manual (805-0025 Rev C).
(3) Discover 42-48-6650 Battery, Max Continuous Charge Current: 130 Adc, as published in Operating
Manual For Solar Applications (805-0015 Rev C).
(4) Discover DLP-GC2-48V Battery, Max Charge Current (1 hour): 29 A, as published in AES
PROFESSIONAL Installation and Operation Manual (805-0027 Rev I).
(5) Discover AES RACKMOUNT 48-48-5120 Battery, Max Charge Current (1 hour): 95 A, as published
in AES RACKMOUNT Datasheet (885-0040 Rev D).
Morningstar 24V
System
Continuous Max Amps
DC
(1)
44-24-2800 Minimum
per MPPT
(2)
DLP-GC2-24V
Minimum per MPPT
(3)
GS-MPPT-60M-200V 60 A 2 2
GS-MPPT-80M-200V 80 A 2 2
GS-MPPT-100M-200V 100 A 2 2
(1) Data based on max amps in GenStar MPPT datasheet, Control #MS-003676 01/30/2022.
(2) Discover 44-24-2800 Battery, Max Continuous Charge Current: 57 Adc, as published in Operating
Manual (805-0025 Rev C).
(3) Discover DLP-GC2-24V Battery, Max Charge Current (1 hour): 58 A, as published in AES
PROFESSIONAL Installation and Operation Manual (805-0027 Rev I).
Morningstar 12V System Continuous Max Amps DC
(1)
DLP-GC2-12V Minimum per
MPPT
(2)
GS-MPPT-60M-200V 60 A 1
GS-MPPT-80M-200V 80 A 1
GS-MPPT-100M-200V 100 A 1
(1) Data based on max amps in GenStar MPPT datasheet, Control #MS-003676 01/30/2022.
(2) Discover DLP-GC2-12V Battery, Max Charge Current (1 hour): 115 A, as published in AES
PROFESSIONAL Installation and Operation Manual (805-0027 Rev I).

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4. CAN HARDWARE TERMINATION AND CAN OUT PIN CONFIGURATION
4.1 LYNK II CAN Termination
NOTICE
Disconnect power and all LYNK II Communication Gateway connections before
configuring header boards and jumpers.
Jumpers configure termination for the AEbus and LYNK Network and the CAN Out
pin assignments. Follow the LYNK II Installation and Operation Manual (805-0033) to
access and configure the header board with jumpers.
Detailed pin configurations are included in the LYNK II manual and are repeated
here for convenience.
NOTE
The LYNK II Communication Gateway terminates the AEbus and LYNK Network by
default. Do not remove the termination jumper inside the LYNK II Communication
Gateway unless instructed by Discover Energy Systems.

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4.2 LYNK II CAN Out - RJ45 Pin Assignments for Morningstar Integration
CAN signals (CAN H, CAN L, CAN GND) can be assigned to any pin of the RJ45
connector by adjusting the jumpers on the header board.
CAN Out Header Jumper RJ45 Pin
CAN L H2 - 5-7 5
CAN H H3 - 8-10 4
CAN GND H4 - 2-4 2
8
7
6
5
4
3
2
1
JUMPER
CAN GND
CAN L
CAN H
H1
H2
H3
H4
7
8
7
8
7
8
3
4
4
3
4
3
4
1
2
2
1
2
1
2
5
6
5
6
5
6
5
9
10
9
10
9
10
LOW
HIGH
GROUND
9
10
7
86
31
Figure 2. Morningstar Pin Assignments