Product Manual
Table Of Contents
- Lynx Smart BMS
- Table of Contents
- 1. Safety Precautions
- 2. Introduction
- 3. Features
- 4. Communication and interfacing
- 5. System Design
- 6. Installation
- 7. Commissioning the Lynx Smart BMS
- 8. Operation Lynx Smart BMS
- 9. Troubleshooting and Support
- 9.1. Lynx Smart BMS does not power up
- 9.2. Lynx Smart BMS operational issues
- 9.3. BMS issues
- 9.3.1. The BMS frequently disables the battery charger
- 9.3.2. The BMS is prematurely turning chargers off
- 9.3.3. The BMS is prematurely turning loads off
- 9.3.4. The pre-alarm setting is missing in VictronConnect
- 9.3.5. BMS is displaying alarm while all cell voltages are within range
- 9.3.6. How to test if the BMS is functional
- 9.3.7. System in sleep or hibernate mode
- 9.3.8. Battery communication error
- 9.4. Battery monitor issues
- 9.5. VictronConnect issues
- 9.6. GX device issues
- 10. Warranty
- 11. Technical specifications Lynx Smart BMS
- 12. Appendix
Balancing sequence
This chart indicates the stages the BMS goes through when the battery is charging a battery with unbalanced cells, until all
battery cells are balanced balanced and the battery is fully charged. Note that during the balancing process the battery charger
might be turned off repeatedly, repeating step 3 and 4 until the cell imbalance has been rectified.
Stage 1 Stage 2 Stage 3 Stage 4 Stage 5
BMS state Operational Operational Operational Operational Operational
Battery state
Charge cycle
starts
Not charging Charging Not charging
Charge cycle
will continue
without
interruptions
Battery cell voltages
The battery
cell voltages
are increasing
until one or
more cells
reaches 3.75V
One or more
battery cell
voltages have
reached 3.75.
the high cells
transfer
energy to the
low cells until
all cells are
below 3.6V
The battery
cell voltages
are increasing
until one or
more cells
reaches 3.75V
One or more
battery cell
voltages have
reached 3.75.
the high cells
transfer
energy to the
low cells until
all cells are
below 3.6V
All cells
voltage are
equal and will
remain at or
below 3.6V
Are battery cells balanced? Unknown No No No Yes
Alarms or warnings None None None None none
Contactor state Closed Closed Closed Closed Closed
LED Green Green Green Green Green
DVCC (GX device) control
Full charge
Full discharge
No Charge
Full discharge
Full charge
Full discharge
No charge
Full discharge
Full charge
Full discharge
ATC contact state Closed Open Closed Open Closed
ATD contact state Closed Closed Closed Closed Closed
Programable relay
Contact
between COM
and NC (no
alarm)
Contact
between COM
and NC (no
alarm)
Contact
between COM
and NC (no
alarm)
Contact
between COM
and NC (no
alarm)
Contact
between COM
and NC (no
alarm)
Voltage and current graph:
A. Battery voltage (blue)
B. Battery current
(orange)
8.4. Battery monitor operation
The Lynx Smart BMS has a built-in battery monitor. It measures battery voltage and current. Based on these measurements it
calculates state of charge, time to go and keeps track of historical data, such as deepest discharge, average discharge and
number of cycles.
8.5. Battery care
Once the Lynx Smart BMS is in operation it is important to take care of the batteries.
These are the basic guidelines:
• Prevent total battery discharge at all times.
• Familiarize yourself with the pre-alarm feature and act when pre-alarm is active to prevent a DC system shutdown.
• If the pre-alarm is active, or if the BMS has disabled the loads, make sure that the batteries are recharged as soon as possible.
Lynx Smart BMS
Page 34 Operation Lynx Smart BMS