Capacitive loads

  • A capacitive load of no more than 10 nF is allowed to be connected to the output without any additional measures. Capacitive loads often occur in electronic assemblies as buffer capacitors.
  • If the capacitive load has a diode in series to its input, the maximum load capacity permitted is 12 µF. This diode is often installed as polarity protection diode in electronic assemblies.
  • If the capacitive load is not known or is higher than 10 nF, the inrush current must be limited to the permitted values of the output pursuant to EN 61131-2.

INFORMATION

Due to the thermal load of the output components, the maximum switching frequency of the digital outputs in the presence of capacitive loads must be limited to the value specified in chapter "Technical data" > Safe digital outputs.