Configuration of Measurements

Measurements

Many Shelly devices are capable of providing measurements (e.g. current, voltage, consumed energy and etc.) for the load connected to them. These parameters are crucial for monitoring electrical systems and ensuring efficient energy management. In order to persist and later recall the published data some additional KNX storage devices might be needed for storing historical data. Shelly devices and the Shelly ecosystem offer local and cloud storage of these data points.

General

Electricity consumption objects available in Shelly devices:

• Voltage

• Current

• Active power

• Active energy

• Generated energy

Within the KNX configuration for publishing measurements you will only see the measurements supported by the particular device.

Functionality Overview

1. Voltage: KNX enables the monitoring of voltage levels in electrical systems, providing real-time data on the voltage supplied to devices or circuits. This parameter is essential for detecting voltage fluctuations and ensuring stable electrical operation.

2. Current: With KNX, you can monitor current flow within electrical circuits, offering insights into the power consumption of connected devices or equipment. Monitoring current helps identify abnormal usage patterns and optimize energy efficiency.

3. Active Power: KNX facilitates the measurement of active power, which represents the rate at which electrical energy is consumed or produced in a system. Active power data allows for real-time monitoring of energy usage and load balancing to prevent overloading.

4. Active Energy: KNX supports the tracking of active energy consumption over time, providing cumulative data on the total energy consumed by devices or systems. Monitoring active energy usage helps in identifying trends, optimizing energy usage, and assessing overall energy efficiency.

5. Generated Energy: KNX supports the tracking of returned energy from an external power supply (i.e. solar/wind/generator supply) over time, providing cumulative data on the total returned energy. Monitoring generated energy usage helps in identifying trends, optimizing energy usage, and assessing overall energy efficiency.

Shelly Dimmer does not support Generated energy object.

Configuration of KNX measuring objects

Step 1 - Voltage object

Encoding: 4-byte, DPT 14.027 (electric potential, V)

Add the Group Address to the Voltage object, then click Save button.

Step 2 - Current object

Encoding: 4-byte; DPT 14.019 (electric current, A)

Add the Group Address to the Current object, then click Save button.

Step 3 - Active power object

Encoding: 4-byte; DPT 14.056 (active power, W)

Add the Group Address to the Active power object, then click Save button.

Step 4 - Active energy object

Encoding: 4-byte; DPT 13.010 (active energy, W/h)

Add the Group Address to the Active energy object, then click Save button.

Step 5 - Generated energy object

Encoding: 4-byte; DPT 13.010 (active energy, W/h)

Add the Group Address to the Generated energy object, then click Save button.

Additional Note on Historical Data

For clients interested in historical data analysis and long-term energy management strategies, it's advisable to integrate additional KNX storage devices. These devices capture and store historical data over extended periods, allowing for in-depth analysis, trend identification, and performance evaluation. By leveraging KNX storage solutions, clients can gain valuable insights into energy consumption patterns and implement targeted measures to optimize efficiency and reduce costs over time.

Alternatively one can use the Shelly ecosystem to store and monitor energy data in the Shelly Smart Control app.