EV chargers integration
Siemens SiCharge D, fast charging under control
The Siemens SiCharge D is a powerful DC fast charger for fleets and public charging hubs. Voltmasters EMS controls the charger, keeps the power within the grid connection and plans charging at the cheapest moments.
Supported devices
- SiCharge D
What the EMS gets out of your Siemens installation
- Load balancing within the limit of the grid connection
- Charge at the cheapest moments, including negative prices
- Priorities per charge point, the fleet comes first
- Interplay with battery and PV for extra charging power
- Monitoring of every charging session
Why installers combine Siemens SiCharge and Voltmasters
DC fast chargers draw high peaks. The EMS does load balancing across the SiCharge chargers, the battery and the PV and plans charging smartly, including negative prices. The main connection stays within its limit without reinforcement.
How it works
How your Siemens connects to the EMS
Voltmaster Controller in the cabinet
The industrial DIN-rail controller sits next to the installation and runs the optimisation locally, even without internet.
Connect over the local network
You connect the device following the step-by-step guide in our documentation. We assist with commissioning on your first project.
Configure and go live
The installation appears in the platform: dashboards, control and monitoring are active right away.
In the field
Two SiCharge D units for a fleet of eleven trucks
At a transport company in West Flanders, two Siemens Sicharge D chargers of 400 kW are installed. The EMS charges the fleet at full power during negative prices, together with eight batteries and 420 kWp of PV.
Read the case studyOther ev chargers we control
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Questions about the Siemens integration
Which Siemens charger does Voltmasters support?
The Siemens SiCharge D DC fast charger.
Does the EMS prevent overload from the SiCharge chargers?
Yes. The EMS does load balancing across the chargers, the battery and the PV and keeps the total power within the limit of the grid connection.
Does the system keep working when the internet drops?
Yes. The Voltmaster Controller runs the optimisation locally in the cabinet. If the connection drops, control, peak shaving and the safety limits simply stay active.
How do I connect a Siemens SiCharge D to the EMS?
The Voltmaster Controller connects to the device over the local network. The step-by-step instructions are in our documentation, and as a certified partner we guide your first commissioning from start to finish.
Ready to make your first project pay off?
Tell us about your next installation. We will show you the platform, help you build the business case and guide you from first quote to certification.