ENABLING LYNK II TO COMMUNICATE WITH SOL-ARK DEVICES

When properly connected to a closed-loop network and set to use the Sol-Ark protocol, LYNK II will transmit real-time parameters from the Discover Lithium battery, including voltage, current, temperature, state of charge, and fault conditions, to a Sol-Ark inverter. LYNK II will also transmit charge voltage and current requests from the Discover Lithium battery to a Sol-Ark inverter.

LYNK ACCESS software for 64-bit Windows 10 / 11 is required to configure LYNK II settings for closed-loop CAN communication with Sol-Ark inverters.

Users and installers should be aware that if communication between the LYNK II and the inverter is lost for more than ten seconds, the inverter will safely stop operation, so long as the BMS Lithium Batt and the BMS_Err_Stop parameters are both enabled on the Sol-Ark inverter. The inverter displays the F58 BMS Communication Fault when communication is lost.

The Sol-Ark inverter will check every five minutes and resume closed-loop operation if communication is reestablished. However, if communication cannot be re-established, the Sol-Ark inverter will need to be manually converted to an open-loop configuration to resume operation. So, as a precautionary measure, it is recommended that the Sol-Ark inverter be programmed with the correct voltage-based open-loop parameters before setting up the system to operate in a closed-loop configuration.

If the BMS Lithium Batt parameter is disabled and the Use Batt V Charged parameter is enabled, the Sol-Ark inverter will operate in an open-loop configuration using voltage-based parameters.

NOTE

In a closed-loop configuration with the BMS Lithium Batt function enabled, the BMS_Err_Stop parameter must be enabled. If the BMS_Err_Stop parameter function is not enabled, the Sol-Ark inverter will continue to operate based on the last communicated battery values. Depending on the mode of operation at the time of communication fault and given enough time, the Sol-Ark inverter-charger will eventually put the attached battery into an overcharged or fully discharged state. When that occurs, either situation will trigger the Discover Lithium Battery BMS to self-protect and disconnect the battery from the system.
Neither Discover Lithium batteries nor LYNK II directly control Sol-Ark relay functions, generator starting or other grid-interactive features. These functions are controlled through the programming of the Sol-Ark inverter.