External control under §14a EnWG
Connect an Easee charging installation to the grid operator’s control system and test the power limit on site.
All three Easee solutions use the switching contacts on the grid operator’s control unit. Depending on the metering solution, either the Easee Amp or the Modbus meter receives the control signal. The Equalizer sends the corresponding charging limit to the charger.
You can use these solutions if your grid operator specifies or accepts a contact-based interface.
Supported solutions
Select your metering solution to view the configuration instructions and the relevant wiring diagrams.
Surplus solar charging. With the Amp, surplus solar charging remains possible using current transformer measurements. With CVM and Janitza, an active external limit may restrict the available charging current. This depends on the specified limit and the actual solar surplus available.
Before installation
Agree the control states and power limits with the grid operator. Installation and commissioning must be carried out by an authorised qualified electrician in accordance with the product instructions and wiring diagram.
- One charging circuit
- You can use a local radio connection if the signal between the Equalizer and the primary charger is reliable.
- Multiple charging circuits
- Connect the Equalizer and the relevant primary chargers to the same local Wi-Fi network.
The limit is transmitted locally. No internet connection is required for this.
Equalizer installation guide (PDF, German) →Equalizer + Easee Amp
- 2 control levels · Installer App
- The configured limit applies while the signal is active. When the restriction is released, the normal site limits apply again.
- 2 more control levels · Support
- These levels are freely configurable. Tell Easee Technical Support which contact states and limits you require.
Set up the control signal in the Installer App
- At the site, open Equalizer → Meter → GPI Ripple Control.
- Enable Use Ripple Control and enter the agreed percentage under Signal limit.
- Select the contact logic and save. With NO, closing the contact activates the limit; with NC, opening the contact activates it.
How Signal limit is calculated. The percentage is based on the configured Main Fuse Limit. If no additional current limit is set, the percentage is based on the Main Fuse. The result is rounded down to a whole ampere, for example from 5.5 A to 5 A.
Wiring diagrams
Equalizer + CVM E3 Mini
- Installer App
- Select CVM E3 Mini as the meter type.
- Digital inputs
- One digital input with two states (High and Low). Easee Technical Support → assigns the agreed limits to the input states.
Example. Low can activate the limit, while High can restore the normal site limits. The assignment depends on the control scheme.
Wiring diagrams
Equalizer + Janitza UMG 604 Pro
- Installer App
- Select Janitza UMG 604 Pro as the meter type.
- Digital inputs
- Two digital inputs with up to four combinations of High and Low. Easee Technical Support → assigns the agreed limits to the input states.
For three or four control levels, agree the wiring diagram with Easee Technical Support before wiring the installation.
Wiring diagrams
Test the external control
- Record the initial state. Note the contact state and the current limit in effect.
- Test each control level. Activate each level using the control unit and check the limit being applied.
- Check that the restriction is released. Deactivate the signal and check that the normal site limits apply again.
To simulate load shedding on the Amp, an external power supply is required as shown in the wiring diagram.
Test record. For each control level, record the input state, intended limit and observed response.
Identify an active signal. In the Easee App, open the site and select the Equalizer. “Ongoing Ripple Control” appears above the device image. The control state is also visible in the Installer App.