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Power control using DI input (without Hybrid EMS)

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About power control and digital inputs

Digital inputs are one method of active power control. This often involves a (radio) ripple control receiver, for example. The following example illustrates the connection and configuration of a ripple control receiver using digital inputs.

A radio ripple control receiver with 4 potential-free normally open contacts (NO) should regulate the active power of the system in the following stages:

  • 100%

  • 60%

  • 30%

  • 0%

Wire a ripple control receiver to the blue'Log

The 4 potential-free normally open contacts are connected to the 4 digital (DI 1-4) inputs of the blue'Log.

Wire a ripple control receiver to the blueLog

Wire a ripple control receiver to the blue’Log

Configure active power control on the blue'Log

  1. On the blue'Log web interface, go to Power Control > Active Power > Basic Settings.

  2. Select the setpoint command method Pvar DI. A window appears.

    Select setpoint command method

    Select the setpoint command method

Define the interface
  1. Pulse group: Here you can specify whether the inputs are switched as pulses or permanently. You can find this information in the manufacturer's documentation for the ripple control receiver. 

  2. Input (command): Specify the inputs required for control. By default, all 4 digital inputs are listed. If you need fewer than 4 inputs, remove them using the image-20241218-150524.png Trash can icon

  3. Acknowledgment: Some network operators require an acknowledgment of the input signals. For this, activate the Acknowledgment toggle. By default, the acknowledgments are output at the 4 digital outputs (DO 1-4) of the blue'Log. Advanced configuration options are available for this.

Configuration of setpoint command method

Configuration: setpoint command method

Define the setpoint
  1. Select the Define setpoint tab.

  1. Set the inputs according to their assignment.

  2. Assign a corresponding setpoint to each input.

  3. Select OK.

  4. The setup is complete.

Define the setpoint

Define the setpoint

Next steps

After configuration is completed, be sure to:

  1. Activate the Power Control toggle.

  2. Select Save.

Activate power control and save settings

Activate power control and save settings

Check that the inputs are working properly

You can also simulate this step by bridging the corresponding inputs (DI 1-4) with GND. Check if the corresponding setpoint value is used under Power Control.

Check if the inputs are working properly

Check if the inputs are working properly

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