Setting load management with an external meter
For external metering, the following meters can be used via Modbus TCP:
Manufacturer | Model | Information |
|---|---|---|
SMA | SMA COM-EMETER-A-20 / SMA COM-EMETER-B-20 | Select TQ EM300-LR / EM410 or EM420 |
Janitza | UMG 512/96 PRO | Port 502 |
Janitza | UMG 604 PRO | Port 502, as of firmware 5.32, Modbus TCP can also be used for EDMM-10 / EDMM-20 |
Janitza | UMG 605 PRO | Port 502 |
Phoenix Contact | EEM-MB371/MB370 | Port 502 |
Siemens | 7KM2200 | Port 502, Modbus TCP can also be used for EDMM-10 / EDMM-20 |
TQ | EM300-LR | Port 502 |
TQ | EM410 / EM420 | Port 502 |
Requirements:
The user interface must be open and you must be logged in.
Procedure:
- In the navigation area, click on [LOAD MANAGEMENT].
- Under [Dynamic Load Management] > Dynamic Load Management - DLM Master/Slave select [DLM Master (With Internal DLM-Slave)].
Information: The main device (DLM master) may only be configured once. All other charging stations must be configured as a subordinate device (DLM slave)( > Setting the Subordinate Device (Slave) for Load Management). - Under DLM External Measurement and Control Inputs>External Meter Support select [On].
- Set the available current under EVSE Sub-Distribution Limit (L1/L2/L3) [A].
- Set the available current under Operator EVSE Sub-Distribution Limit (L1/L2/L3) [A].
- Set the current limit of the point of interconnection under [Main Distribution Limit (L1/L2/L3) [A]].
- Set the safety margin for external load under [External Load Headroom (L1/L2/L3) [A]].
- Set the assumed load in case of failure under External Load Fallback (L1/L2/L3) [A]. If the value 9999 is input, all charging points will be switched off in case of failure.
- Set the type of dynamic load control under External Meter Location.
- Under Meter configuration (Second), select the meter for the external measurement.
- Under IP address of second meter, set the IP address of the energy meter.
- Under Port number of second meter, set the port number.
- Click on [Save] to save the changes and [Restart].
- Under [Diagnostics] > [Energy Manager] > [Second Meter] the external meter can be checked.