Lynx Smart BMS For systems with multiple Lynx Smart BMS units connected to the same VE.Can network but not part of a parallel redundant battery bank, use the GX device and go to Settings → Services → [corresponding VE.Can port] to assign each unit a unique VE.Can instance. The GX device treats BMSes with the same VE.Can instance as part of the newly created virtual battery bank. 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. These are as follows: 1. To ensure continuous power to the GX device, wire the AUX ports of all BMSes in parallel. This configuration ensures the GX device remains powered if one BMS goes into off mode or is turned off for maintenance. A blocking diode is required for each AUX output. For details, please see the following schematics. 2.
We recommend connecting a latching push button (preferably with LED) to the respective remote on/off terminals of the BMS-es instead of the factory-installed wire loop. This allows for easy activation/deactivation of each battery bank individually. For details, please see the following schematics. 3. We also recommend installing an audible alarm, such as an external buzzer, connected to Relay 1 of the GX device. When Relay 1 is configured as an alarm relay, the buzzer will sound in the event of an alarm situation. This alarm can be acknowledged directly on the GX device, which will stop the alarm sound. Alternatively, the alarm relay can be wired to integrate with a boat's alarm system. 4.
If the ATC contacts are required, connect all the ATC contacts in parallel. The BMSes follow each other’s ATC state. If one BMS disables ATC, the others will do the same. 5. If the ATD contact is required, wire all the ATD contacts in parallel so that loads remain operational if at least one BMS is live. 6. If an alternator ATC was designed in, then wire all relay contacts in parallel. For new systems, the alternator can be directly connected to the ATC line together with other charging sources. The following schematic shows two Lynx BMS NG units, each managing its own battery bank, connected in parallel. The subsequent diagram provides a detailed wiring layout, including:
Latching push buttons with integrated LEDs Blocking diodes, required when AUX outputs are wired in parallel An audible alarm, connected to Relay 1 on the GX device Note: Most push buttons with integrated LEDs are rated for either 12 V or 24 V drive voltage. When used in a 48 V battery bank system, an additional ballast resistor is required; see legend item ‘B’ in the diagram. Important: The load-side cables from each Lynx BMS to the Lynx Distributor or busbar must be of equal length to ensure balanced current sharing between the battery banks. Page 27 Paralleling Lynx BMSes