EV fleet []

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====== EV fleet ======


RDC charger supports connection of up to 8 RDC Chargers - EV fleet.\\ 
In such configuration only one RDC Charger (master) is in charge of other connected chargers (slave).\\ 
Master RDC Charger monitors:\\
  * current draw by other slave chargers and in real time allocates (limits) available capacity allowing them to charge without overloading,
  * data from slaves such as power, energy & settings and synchronize them with cloud service, therefore no need for extra [[wiki:20_rdc_charger:15_hardware:10_linker|IOT linker]] on slave RDC Charger.
**Note:** If there is no grid power sensor, master charger enables limiting of complete ev fleet by virtual grid power sensor.\\ 
:!: Only one RDC charger is master in ev fleet !

=== Procedure to set RDC Charger as slave is as follows: ===
  * [[wiki:20_rdc_charger:30_software:start#evse_overview|RDC Charger]] -> set Max current (1)
  * RDC Charger -> enable "EVSE works as slave" (2) Master SN presents serial number of master charger, it will appear once connection is established. 
  * RDC Charger -> set current if connection with master is lost (3)
  * [[wiki:20_rdc_charger:30_software:start#hems_configurator|HEMS Configurator]] -> settings -> set static IP (it's recommended) (4)
  * HEMS Configurator -> limiter -> set "No limiter" for RDC Charger (5)
{{wiki:20_rdc_charger:hems_config_cluster_01.png?direct&800|}}

=== Procedure to set RDC Charger as master is as follows: ===
  * [[wiki:20_rdc_charger:30_software:start#hems_configurator|HEMS Configurator]] -> settings -> output column -> select "EVSE RDC external" at desired position (1). Note that "EVSE inter." is reserved and can't be changed! 
{{wiki:20_rdc_charger:hems_config_cluster_02.png?direct&800|}}
  * HEMS Configurator -> settings -> enter name and select icon (2). Message "Error - device is not responding" may appear as IP address is not defined yet.
{{wiki:20_rdc_charger:hems_config_cluster_03.png?direct&800|}}
  * HEMS Configurator -> limiter: 
  * (3) enter allowed current value of grid fuses in case of connected grid power sensor, or max current limit of complete ev fleet if there is virtual grid active
  * (4) make sure to configure phase order for grid and RDC Chargers correct as dynamic load management may not work properly. **Double check!**
  * (5) select limiter priority for chargers: no limiter, limit last (last to be limited), limit second, limit first (first to be limited)
{{wiki:20_rdc_charger:hems_config_cluster_04.png?direct&800|}}
  * HEMS Configurator -> IO mux -> enter IP address of slave RDC Charger (6). Serial number (SN) will be listed automatically once connection is established.
{{wiki:20_rdc_charger:hems_config_cluster_05.png?direct&800|}}
  * HEMS Configurator -> ev fleet:\\ (7) master RDC Charger,\\ (8) connected slave RDC Charger with enabled control by master (green tick) and\\ (9) connected slave RDC Charger with disabled control (red X) -> master can not control it! To enable control, run RDC Charger app on slave charger and enable "EVSE works as slave".
{{wiki:20_rdc_charger:hems_config_cluster_06.png?direct&800|}}\\