Saving the output voltage in operation
One way to determine and save the output voltage in the CoE index 0x8004:04 with a prespecified set current is to determine it during operation. With this method, the LED is switched on in "Current Control" mode with a prespecified set current and the output voltage is determined and saved in the CoE index 0x8000:04 "Output voltage".
Since for this method the LED must be turned on in order to manually set a command that saves the voltage value, this method is relatively slow and is not suitable if the LED is to be overdriven in operation with currents greater than the nominal current. It is recommended to use this method if the LED is operated later in continuous light mode with currents ≥ the nominal current.
The procedure is described below:
- Set the operation mode in the CoE index 0x8004:01 “Led operation mode” to “Current Control”
- Set the Predefined PDOs in the PDO Tab to “Current control (with info data)”
- Preset the set current in the process data under “DOX Current” → “Output Current”
- Enable the LED output via “DOX Control” → “Control” → “Enable”
- Switch on the LED output via “DOX Control” → “Control” → “Output”
- Specify the command 0x0501 to store the output voltage in the CoE index 0xFB00:01 “Request”. The stored voltage is then entered in the CoE index 0x8000:04 “Output voltage”.
