Message 0x356 may be used to remotely supply Battery Current readings to the WS500, reducing the need to install a physical current shunt. In addition, Battery Temperature measurements will be used in combination with the presently active CPE to enforce hard charging limits based on high and/or low temperatures, even if the BMS continues to request charging. 0x35A: The Alarm/Warning message will be monitored for any active indication. Upon receiving a Warning indicators, the WS500 will stop charging and perform a recoverable fault (regulator will restart). However if a Fault flag is received, the WS500 will enter a non-recoverable hard fault. Different BMS devices behave differently, but the best practice is if the BMS sends out a warning and/or fault 2 seconds before doing a physical disconnect to prevent voltage spikes in the system from an uncoordinated disconnect. MG Energy System: The MG Energy Systems line of BMSs and batteries supports both an 11-bit SMA like interface and a 29-bit based messaging protocol. It is preferred to utilize the 29-bit messages. When selected the 29-bit protocol is a J1939 compatible messaging system utilizing a series of public and private messages that will then ‘converted’ into an OSEnergy type device using the original CAN node address and with a fixed priority of 120. The MG Energy System BMS issues a proper warning before disconnects, assuring safe shutting down of the alternator. MG Energy System support allows for remote instrumentation of battery current and temperature, the sending of battery charge goals and limits (Voltage/current), Dynamic C-Rate management based on installed battery capacity, as well as Aggregation of up to 10x As with the SMA protocol, when Battery Charge Voltage and Charge Current Limitation are both non- zero the WS500 will enter CV/CC mode with those goals. A zero value for one or both of those will cause the WS500 to enter standby. Optionally, if “ w/ Zero Output Technology” is selected a zero goal value for current with a non-zero value for voltage will cause the WS500 to actively regulate battery current to 0A, while leaving the alternator active to supply energy to ongoing house loads. Victron LYNX BMS: The Victron line of LYNX BMSs are supported using a proprietary 29-bit protocol which is compatible with J1939. When selected the LYNX messages are ‘converted’ into an OSEnergy type device using the original CAN node address with a fixed priority of 120. LYNX BMS support allows for remote instrumentation of battery current and temperature, the sending of battery charge goals and limits (Voltage/current), and Dynamic C-Rate management based on installed battery capacity.
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