This article describes the activation and configuration of the static reev EMS (Energy Management System). The static reev EMS reliably distributes the available electrical power at a site across the connected charging stations – without additional metering hardware.
Prerequisites
The following prerequisites must be met before the static reev EMS can be activated:
Site is created in the reev Platform
Charging stations are assigned to the site and online
Maximum power of the main distribution is known (in kW or A)
Phase rotation of the charge points is documented
Note: The procedure described in this article applies exclusively to static load management. Activation is carried out without additional metering hardware and is based on fixed power limits. Dynamic load management requires additional hardware components and an extended commissioning process. You can find the installation guide for dynamic load management here.
Static vs. Dynamic Load Management
| Static Load Management | Dynamic Load Management |
Power limit | Fixed | Dynamic based on measured values |
Metering hardware | Not required | Energy meter + IoT gateway required |
Activation | Directly via the reev Platform | Configuration by reev Support |
PV surplus charging | Not available | Available |
Step-by-Step Guide: Activating the Static reev EMS
The static reev EMS is activated via the reev Platform as part of the site setup. The following steps are required:
Step 1: Define the Maximum Power Budget for the Site
Define the maximum available power for the charging infrastructure at the site.
Navigate in the reev Platform to Energy Management -> Configuration.
Set the maximum power budget for the site.
Enter the value in kilowatts (kW) or amperes (A).
The value is based on the actual available power of the main distribution and represents the upper limit for all connected charge points.
Note: Correctly specifying the maximum power is a prerequisite for the safe and standards-compliant operation of the charging infrastructure. Incorrect values can lead to an overload of the electrical infrastructure.
Step 2: Review Charge Point and Charging Group Settings
Review and configure the connected charge points.
Set the maximum kW limit per charge point.
Check the phase rotation and adjust if necessary.
Assign charge points to charging groups (if applicable).
Note: The initial kW limits are based on the default values of the respective charge point model and can be adjusted as needed.
Step 3: Configure Advanced Settings (Optional)
Optionally, further details of the electrical structure can be configured to accurately represent the infrastructure.
The following advanced settings are available:
Create additional main or sub-distributions
Assign individual charging stations to specific distributions
Activate phase imbalance prevention to reduce phase imbalances
Phase imbalance prevention monitors the difference between phases and limits charging power when the following thresholds are exceeded:
Germany: Up to 20 A difference permitted (default)
Austria and Switzerland: Up to 16 A difference permitted
Tip: Use the advanced settings to accurately map complex site structures with multiple distributions. This ensures optimal power distribution.
Step 4: Save the Configuration
Review all entered values.
Save the configuration.
After saving, the static reev EMS is immediately active and controls the power allocation for all connected charging stations. A separate commissioning step is not required.
Subsequent Adjustments
All EMS-relevant parameters can be adjusted at any time in the reev Platform under Energy Management -> Configuration.
The following parameters can be adjusted subsequently:
Maximum kW limit for the site
Charging groups and charge point limits
Phase rotation
Phase imbalance prevention
Changes take effect immediately.
Alternative Activation Methods
The static reev EMS can also be activated in the following ways:
Self-activation by the operator: Operators (CPOs) can activate the static reev EMS independently via the reev Platform. Further information can be found in the article reev EMS | Activate reev Energy Management.
Activation via the reev Companion: When commissioning charging stations via the reev Companion, the static reev EMS can be activated and configured directly at the end of the commissioning process.
Troubleshooting
Problem | Possible Cause | Solution |
EMS does not distribute power | Configuration not saved | Check whether the configuration has been fully saved. |
Charge points charge above the defined limit | Incorrect kW limit set per charge point | Check the kW limits under Energy Management -> Configuration. |
Phase imbalance warning despite activation of phase imbalance prevention | Phase rotation not correctly configured | Check and correct the phase rotation of the affected charge points. |
Note: For further issues, contact reev Support.
Frequently Asked Questions
What is the difference between static and dynamic load management?
With static load management, a fixed power limit is defined within which the reev EMS distributes the available power across the charge points. With dynamic load management, the power limit adjusts automatically based on current measured values from an energy meter.
Do I need additional hardware for the static reev EMS?
No. The static reev EMS does not require any additional metering hardware. Configuration is carried out entirely via the reev Platform.
Can I switch from static to dynamic load management later?
Yes. A switch is possible at any time. However, dynamic load management requires an energy meter and an IoT gateway. You can find the installation guide here.
How quickly do configuration changes take effect?
Changes take effect immediately after saving.
What happens if I enter an incorrect power budget?
A power budget set too high can lead to an overload of the electrical infrastructure. A value set too low unnecessarily limits the charging power. Make sure the value corresponds to the actual available power of the main distribution.
Who can activate the static reev EMS?
Activation can be carried out by the qualified electrician during site setup, by the operator (CPO) via the reev Platform, or via the reev Companion during commissioning.