This article describes the installation, configuration, and activation of dynamic reev EMS (Energy Management System). The dynamic reev EMS distributes the available electrical power at the site based on real-time measurements from an energy meter across the connected charging stations.
Prerequisites
The following prerequisites must be met before starting the installation:
Site is created in the reev Platform
All charging stations are connected to the reev backend and online
All charging stations are compatible with the reev EMS
A compatible energy meter is available
A Teltonika router (IoT gateway) is ready
Access to the reev Companion is available
Note: Compatibility of a charging station with the reev backend does not automatically mean compatibility with the reev EMS. A current list of all supported hardware models can be found in the hardware compatibility table.
Overview: Installation Process
The installation process for the dynamic reev EMS consists of three steps:
Step | Description | Performed by |
1. Hardware installation | Install energy meter and Teltonika router | Qualified electrician |
2. Charge point configuration | Configure charge points via the reev Companion | Qualified electrician |
3. Installation protocol | Complete the protocol and send it to reev support | Qualified electrician |
After receipt of the complete installation protocol, reev support activates the dynamic reev EMS.
Step 1: Hardware Installation
The qualified electrician installs the energy meter and the Teltonika router on site according to the installation guides.
Teltonika Router (IoT Gateway)
The Teltonika router is the IoT gateway for the dynamic reev EMS. It reads Modbus TCP registers from the energy meter and securely transmits the data to the reev EMS backend. The router is mandatory for dynamic load management.
The following Teltonika RUT models are supported:
Teltonika RUT241 (recommended)
Teltonika RUT240
Teltonika RUT300
Teltonika RUT956
Tip: The Teltonika RUT241 offers the best balance between performance and cost.
Installation Variants
Depending on the site setup, two installation variants are possible:
Router as data source: The Teltonika router serves as the central communication interface for the entire charging infrastructure.
Pre-configured charging stations: Each charging station communicates individually via LTE directly with the reev backend.
The reev EMS supports both LTE and LAN connections.
RMS Connection
Remote configuration of the router by reev support requires access via the Teltonika Remote Management System (RMS).
LAN connection: The RMS option must be enabled in the router settings.
LTE connection: This step is not required.
Existing Metering Equipment
Previously installed energy meters can be reused, provided the following conditions are met:
The meter meets the requirements of the installation guides.
The meter is listed as compatible and integrated in the hardware compatibility table.
Installation Checklist
Before proceeding to Step 2, make sure the following points are fulfilled:
The energy meter is correctly connected to the LAN port of the router or the corresponding switch.
The router and energy meter are powered on (green LEDs blinking).
For LAN connection: The WAN port of the router is connected to the local network.
For LTE connection: The signal strength is at least three bars.
The RMS connection is enabled in the router settings.
Step 2: Charge Point Configuration
All charging stations installed at the site must be configured via the reev Companion.
The following steps must be performed:
Set the maximum allowable load per connector.
Define the phase assignment of each connector.
Enter the main fuse limit of the site.
This information enables the reev EMS to perform phase-based dynamic load management and ensures the protection of all fuses at the site.
Note: The main fuse limit can be adjusted later if needed in the reev Platform under Energy Management -> Configuration.
Once all charging stations have been configured in the reev Companion, the reev EMS automatically saves the data and assigns it to the respective stations upon activation.
Step 3: Installation Protocol
To complete the installation, fill out the reev EMS installation protocol and send it to [email protected]. The installation protocol can be found here.
The installation protocol contains the following information:
Teltonika and SIM card credentials: These are required for the one-time remote configuration of the router by reev support. An on-site technician is not required for this step.
Site topology: Distribution of main and sub-fuses, their limits, and assignment of charging stations to the respective fuses.
Note: The topology information must be accurate and verified by a qualified electrician. Incorrect information can lead to damage to the electrical infrastructure.
Activation and Validation
After receipt of the complete installation protocol, reev support activates the dynamic reev EMS and informs the operator of the successful activation. The operator can then view and validate the configuration and performance of the reev EMS in the reev Platform under Energy Management -> Overview.
Additional EMS Features
Separate guides are available for activating additional reev EMS features:
Troubleshooting
Problem | Possible cause | Solution |
Router is not reachable via RMS | RMS option not enabled in router settings | Enable the RMS option in the router settings. For LTE connections, this step is not required. |
Energy meter does not deliver measurement data | Network connection between router and meter interrupted | Check whether the energy meter is correctly connected to the LAN port of the router and that both devices are powered on. |
Charging stations are not recognized by the EMS | Charging stations are not compatible with the reev EMS | Check compatibility in the hardware compatibility table. |
Phase imbalance warning in the dashboard | Phase assignment not correctly configured | Check and correct the phase assignment of the affected charge points in the reev Companion. |
Note: For further issues, contact reev support at [email protected].
Frequently Asked Questions
What hardware do I need for the dynamic reev EMS?
You need a compatible energy meter and a Teltonika router as an IoT gateway. A current list of supported hardware can be found in the hardware compatibility table.
Why is a Teltonika router required even though my charging stations are already online?
The Teltonika router serves as an IoT gateway and reads the measurement data from the energy meter via Modbus TCP. The internet connection of the charging stations is only used for OCPP communication with the reev backend.
Can I use an already installed energy meter?
Yes, provided it communicates via Modbus TCP and is listed as compatible in the hardware compatibility table. Contact reev support if you have any questions.
Can I activate the dynamic reev EMS myself?
No. Activation of the dynamic reev EMS requires remote configuration by reev support. The installation protocol must be completed and sent to [email protected].
What is the difference between static and dynamic load management?
With static load management, a fixed power limit is defined. With dynamic load management, the power limit automatically adjusts based on real-time measurements from the energy meter. The installation guide for static load management can be found here.
Does the qualified electrician need to be on site for activation?
No. Activation is performed remotely by reev support. The qualified electrician is only needed on site for the hardware installation (Step 1) and charge point configuration (Step 2).