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Main Page > TeltoCharge > Advanced Topics > Dynamic Load Management

Dynamic Load Management

Dynamic load management is a sophisticated feature that empowers users to efficiently control electric load by managing a group of chargers installed within a single circuit. Through the implementation of modbus RS-485 communication, the chargers are able to communicate with one another and dynamically adjust their charging power in response to the load on the grid, ensuring optimal charging operations and grid stability.

DLM with smart meter:

This configuration enables users to efficiently manage the electric load between chargers and other electronic devices. By leveraging the capabilities of a smart meter, precise control and optimization of the overall load can be achieved.

--> Supported energy meters

DLM without smart meter:

In cases where the focus is solely on managing the electricity load between chargers and there are no additional electronic devices contributing to the load, this option can be utilized. It offers a simplified approach to load management, tailored specifically to charger interactions.

DLM Connection

Dynamic Load Management (DLM) is achieved through a carefully interconnected system of chargers, where communication is governed by a designated "Primary" charger, dictating instructions to the remaining "Secondary" chargers. These chargers must be interconnected serially (daisy chained), each requiring the use of UTP twisted pair cables for communication via the A and B pins.

Serial connection:

Teltonika Energy App Settings

Once the chargers are properly connected to the electrical grid and interconnected to each other, the next step is to configure the settings for each charger using the Teltonika Energy app.

Below, you will find a comprehensive list of the settings that should be adjusted to achieve DLM functionality.

Max power from grid

It is very important to set max power from grid parameter correctly in the PRIMARY charger if you want to use DLM. This parameter shows how much current you have in the circuit you want to balance. That means you have to set all available amperes.

If for example in the Primary charger you will set lower current, DLM might not work correctly and the chargers might not even start the charging process.

For the secondary chargers, this parameter is not as critical. It is advisable to set it to a maximum of 16 A (for 11 kW chargers) or 32 A (for 7.4/22 kW chargers).

Primary Device Configuration

The first thing would be to select the primary device that would control the rest of the group communication protocol between the master-slave and master-meter.

It should only be enabled for one charger per group only, the primary charger will handle all the calculations, establish communication with the smart meter and control whole group (maximum group size is 20 devices).

This setting enabled the charger as the primary charger and allows to change the settings that will affect the whole group:

1."Primary device" – Confirms that this is the primary device that will control the group

2."Type"

Dynamic – using a smart meter to balance
Static – balancing only from Max power from grid parameter

3."Secondary device count" the number of secondary devices

4."Secondary device ID" start ID from which chargers will be counted (If it‘s set „2“, the first secondary device must have address 2 and this address must be increased by 1 with each new secondary device

5."Advanced settings" - (More info below)

6."Check status" – possibility to check communication type with secondary devices

Advanced settings

Advanced settings are the settings that most of the time are left default. Only on special occasions, those settings must be changed.

Phase connected – detected automatically
Phase sharing mode – type of chargers in group
Current sharing mode – Current is distribution mode
- Equal - Energy will be distributed equally among all active chargers
- By Priority - Energy will be distributed based on priority. Chargers will be prioritized according to their charging state.
Communication timeout – delay before warning
Communication settings – settings must be the same for all the devices in the group
- RS-485 baud rate
- RS-485 parity
- RS-485 stop bit

Secondary device configuration

After Primary device configuration, it’s mandatory to enable Dynamic load management mode and correctly set-up each secondary device. (This action must be repeated for each new secondary device)

For each secondary device few settings must be adjusted:

Max power from grid - It is advisable to set it to a maximum of 16 A (for 11 kW chargers) or 32 A (for 7.4/22 kW chargers)

Secondary device – enabled
Secondary device ID – for the first device it must be as set in the master, for each new secondary device this must be increased by 1
Advanced settings – must match with the primary device settings

@@ Line 1: / Line 1: @@
 <h1>Dynamic Load Management</h1>
      <p>Dynamic load management is a sophisticated feature that empowers users to efficiently control electric load by managing a group of chargers installed within a single circuit. Through the implementation of modbus RS-485 communication, the chargers are able to communicate with one another and dynamically adjust their charging power in response to the load on the grid, ensuring optimal charging operations and grid stability.</p>
-    <h2>DLM Types</h2>
-    <p>Dynamic load management (DLM) is a versatile solution applicable in various scenarios, providing users with the flexibility to choose between using it with or without a smart meter. Here are the key distinctions:</p>
+=== DLM with smart meter: ===
+<p>This configuration enables users to efficiently manage the electric load between chargers and other electronic devices. By leveraging the capabilities of a smart meter, precise control and optimization of the overall load can be achieved.</p><p>[[File:DLM with meter.png|frameless|824x824px]]</p><p>''[[Supported smart energy meters for Dynamic load balancing and Solar integration|--> Supported energy meters]]''</p><p></p>
-=== <strong>DLM with smart meter:</strong> ===
+=== DLM without smart meter: ===
-<p>This configuration enables users to efficiently manage the electric load between chargers and other electronic devices. By leveraging the capabilities of a smart meter, precise control and optimization of the overall load can be achieved.</p><p>[[File:DLM with meter.png|frameless|824x824px]]</p><p></p>
-=== <strong>DLM without smart meter:</strong> ===
 <p>In cases where the focus is solely on managing the electricity load between chargers and there are no additional electronic devices contributing to the load, this option can be utilized. It offers a simplified approach to load management, tailored specifically to charger interactions.</p>[[File:DLM without meter.png|frameless|871x871px]]<h2>DLM Connection</h2>
-     <p>Dynamic Load Management (DLM) is achieved through a carefully interconnected system of chargers, where communication is governed by a designated "Master" charger, dictating instructions to the remaining "Slave" chargers. These chargers can be interconnected either in a serial or parallel manner, each requiring the use of UTP twisted pair cables for communication via the A and B pins.</p><p>'''Serial connection:'''</p><p>[[File:DLM serial connection.png|frameless|830x830px]]</p><p>'''Parallel connection:'''</p><p>[[File:DLM parallel connection.png|frameless|610x610px]]</p>
+     <p>Dynamic Load Management (DLM) is achieved through a carefully interconnected system of chargers, where communication is governed by a designated "Primary" charger, dictating instructions to the remaining "Secondary" chargers. These chargers must be interconnected serially (daisy chained), each requiring the use of UTP twisted pair cables for communication via the A and B pins.</p><p>'''Serial connection:'''</p><p>[[File:DLM serial connection.png|frameless|830x830px]]</p><p>
-     <h2>Teltonika Energy App Settings</h2>
+     <h2>'''Teltonika Energy App Settings'''</h2>
-     <p>Once the chargers are properly connected to the electrical grid and interconnected to each other, the next step is to configure the settings for each charger using the Teltonika Energy app. Below, you will find a comprehensive list of the settings that should be adjusted to achieve DLM functionality.</p>
+     <p>Once the chargers are properly connected to the electrical grid and interconnected to each other, the next step is to configure the settings for each charger using the Teltonika Energy app. </p>
-    <p></p>
+    <p>Below, you will find a comprehensive list of the settings that should be adjusted to achieve DLM functionality.</p>
+== '''Max power from grid''' ==
+It is very important to set ''max power from grid'' parameter correctly in the '''PRIMARY''' charger if you want to use DLM. This parameter shows how much current you have in the circuit you want to balance. That means you have to set all available amperes.
+If for example in the Primary charger you will set lower current, DLM might not work correctly and the chargers might not even start the charging process.
+For the secondary chargers, this parameter is not as critical. It is advisable to set it to a maximum of 16 A (for 11 kW chargers) or 32 A (for 7.4/22 kW chargers).
+[[File:Max_Power.png|alt=Max Power DLM|frameless|495x495px]]
+== '''Primary Device Configuration''' ==
+The first thing would be to select the '''primary''' device that would control the rest of the group communication protocol between the master-slave and master-meter.
+It should only be enabled for one charger per group only, the primary charger will handle all the calculations, establish communication with the smart meter and control whole group (maximum group size is 20 devices).
+[[File:DLM_primary.png|alt=DLM primary|frameless|764x764px]]
+This setting enabled the charger as the primary charger and allows to change the settings that will affect the whole group:
+.'''"Primary device"''' – Confirms that this is the primary device that will control the group
+.'''"Type"'''
+* '''Dynamic''' – using a smart meter to balance
+* '''Static''' – balancing only from '''''Max power from grid''''' parameter
+.'''"Secondary device count"''' the number of secondary devices
+.'''"Secondary device ID"''' start ID from which chargers will be counted (If it‘s set „2“, the first secondary device must have address 2 and this address must be increased by 1 with each new secondary device
-=== Max power from grid ===
+.'''"Advanced settings" -''' (More info below)
-It is very important to set this parameter correctly in the master charger if you want to use DLM. This parameter shows how much of current you have in the circuit you want to balance. That means you have to set as much as this current can have amperes. Usually it should be the same current as the breaker tripping current. If for example in the master charger you will set lower current, DLM might not work and charger might not even start charging process.
-For the slave charger, this parameter is not as critical. It is advisable to set it to a maximum of 16 A (for 11 kW chargers) or 32 A (for 7.4/22 kW chargers).
+.'''"Check status"''' – possibility to check communication type with secondary devices
-=== General meter settings ===
+== '''Advanced settings''' ==
-If you want to enable dynamic load management with a smart meter, it is important to correctly configure the general meter settings.
+Advanced settings are the settings that most of the time are left default. Only on special occasions, those settings must be changed.
-# Energy meter type: You need to select the type of smart meter (1-phase/3-phase). Please note that you can use a 1-phase charger even if the meter is 3-phase.
+* '''Phase connected''' – detected automatically
-# RS-485 baud rate: This information can be found in the meter settings accessible through the meter display. If the client cannot locate it, it is recommended to refer to the smart meter manual.
+* '''Phase sharing mode''' – type of chargers in group
-# RS-485 parity/stop bit: Similarly, this information can also be found in the meter settings. If the client is unable to find it, it is advisable to check the smart meter manual.
+* '''Current sharing mode''' – Current is distribution mode
+** Equal - Energy will be distributed equally among all active chargers
+** By Priority - Energy will be distributed based on priority. Chargers will be prioritized according to their '''charging state'''.
+* '''Communication timeout''' – delay before warning
+* '''Communication settings''' – settings must be the '''same for all the devices in the group'''
+** RS-485 baud rate
+** RS-485 parity
+** RS-485 stop bit
-These settings must be configured for all chargers in the circuit, regardless of whether they are slaves and have direct communication with the meter. These settings establish the communication protocol between the master-slave and master-meter.
+[[File:Advanced_Primary.png|alt=Advanced Primary|frameless|456x456px]]
-=== Dynamic Load Balancing ===
+== '''Secondary device configuration''' ==
-To access the DLM functionality, the user must first enable the DLB functionality.
+After Primary device configuration, it’s '''mandatory''' to enable '''Dynamic load management''' mode and correctly set-up '''each secondary device'''. (This action must be repeated for each new secondary device)
-# Measuring device: The meter should be selected. For UK chargers, it is possible to choose CT clamps.
+For each secondary device few settings must be adjusted:
-# Energy meter address: This information can be found in the meter settings accessed through the meter display. If the address cannot be located, it is recommended to consult the smart meter manual.
-# Current update interval: By default, it is set to 3 seconds. However, there may be cases where the user needs to increase this value. For instance, if there are significant distances between the chargers and the smart meter or if there are numerous interconnected chargers.
+* '''Max power from grid''' - It is advisable to set it to a maximum of 16 A (for 11 kW chargers) or 32 A (for 7.4/22 kW chargers)
-'''TBA....'''
+* '''Secondary device''' – enabled
+* '''Secondary device ID''' – for the first device it must be as set in the master, for each new secondary device this must be increased by 1
+* '''Advanced settings''' –  must match with the primary device settings
+[[File:Secondary config.png|frameless|782x782px]]
+[[Category: Advanced Topics]]