- Communication: CAN-Bus (NMEA2000, SMA, custom on request)
- Humidity: Max. 95% (non-condensing)
- Operating temperature range: -20°C to + 50ºC
- Protection class: IP22
- Max. number of batteries in parallel: 48
- Max. number of batteries in series: 2 (=48V)
- M12 connection
One of the unique features, which makes installation much easier, is an integrated DC distribution system with fuse holders. Flexible system configurations are possible for small to large systems of up to 96 connected battery modules.
|M12 and RJ45|
The communication connections between the batteries and Master LV can be either with economical RJ45 cables or more robust M12 cables. Up to 96V both options are available. The M12 connectors integrate an interlock loop to monitor connections. This interlock can be used to switch of the internal safety contactor hardwired by an external emergency button.
|Diagnostic tool software|
Battery system diagnostics are important during commissioning, system testing, service, maintenance and trouble shooting. The diagnostic tools provide all the detailed information about the battery system. Main values, like voltage, current and State-Of-Charge, can be viewed and logged to a file. Moreover, detailed battery information can be shown such as cell voltages, all temperature sensor, firmware version etc. Besides this information also history values and stored events can be read from the Master. To create more flexibility, settings can be configured, for example CAN-Bus protocol selection or adding a function to a dedicated output.
|Monitoring and Control|
Critical parameters are monitored by the Master LV such as cell voltages and temperatures of each connected battery module. A set of limits is determined providing boundaries. Several boundaries are set for each of the monitored parameters. First a control boundary which controls chargers or loads. Second a warning limit and third a critical fail which opens the safety contactors interrupting the power path from the batteries to loads and chargers. A well integrated system never opens its safety contactors during normal operation.