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Device integrations

EV chargers

The EV chargers the Voltmasters EMS controls: how the controller steers a charger, and the charger type per brand.

The EMS steers the charging power of AC and DC chargers together with the rest of the site: within the limit of the grid connection, alongside the battery and the PV, and at the cheapest moments.

How the EMS controls a charger

flowchart LR
    C["Voltmasters Controller"] -->|"limit per connector and heartbeat"| E["Charger"]
    E -->|"status, power and energy"| C
    E -.->|"no heartbeat"| F["Charger fallback value"]
The controller sends a limit and a heartbeat. When the heartbeat stops, the charger falls back to its own fallback value.
  • The EMS writes a current or power limit per connector, and pauses the session where the charger allows it.
  • Starting and stopping a session is done by the driver, at the charger or through OCPP.
  • What the charger does when the connection with the EMS drops differs per brand and is described on the brand page.

Brands

Brand Type
ABB Terra AC charger AC
ABB Terra Gateway Pro DC, through the site controller
Alfen AC
Alpitronic HYC DC
Autel MaxiCharger AC
Etrel AC
Iocharger AC
Kstar DC
Mennekes AC
Schneider Charge Pro AC
Schneider EVlink Pro AC AC
Schneider StarCharge Fast DC
Siemens SICHARGE D DC
Sinexcel DC
Smappee Genius Flex AC and DC, through the gateway

All models per brand are in the overview list.