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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:
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100%
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60%
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30%
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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.
Configure active power control on the blue'Log
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On the blue'Log web interface, go to Power Control > Active Power > Basic Settings.
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Select the setpoint command method Pvar DI. A window appears.
Select the setpoint command method
Define the interface
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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.
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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 via the
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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.
Define the setpoint
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Select the Define setpoint tab.
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Set the inputs according to their assignment.
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Assign a corresponding setpoint to each input.
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Select OK.
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The setup is complete.
Next steps
After configuration is completed, be sure to:
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Activate the Power Control toggle.
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Select Save.
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.