EL2564 - Quick start

EL2564 - Common anode LEDs connection

Before commissioning in TwinCAT

  1. the EL2564 must be supplied with 24 VDC via the power contacts,
  2. the LED supply voltage must be connected to terminal point 3 or 7,
  3. the cathode(s) of the LED illumination must be connected to one of the four outputs at terminal point 1, 2, 5 or 6,
  4. the common anode of the LED illumination must be connected to the LED+ potential. For this purpose, the anode can either be connected directly to the power supply unit or via terminal points 3 or 7 (see chapter LEDs and connection).

Notice

Connection instructions

  • Make sure that the supply of the LED has the same 0 V potential as the 0 V power contact, as this is the reference ground of the terminal. The 0 V power contact is also internally connected to terminal points 4 and 8.
  • In addition, the LED supply voltage should not be grounded at the power supply unit. Due to the internal connection with the ground of the 24 V power contact voltage, grounding already results, since control voltages must be grounded. A grounded LED supply voltage would cause reverse currents to also flow back to the LED supply via the ground connection of the 24 V control voltage. This could cause conductors to become overloaded.
  • To reduce oscillations on the supply, the feed line of the LED supply from the power supply unit to the terminal should be kept as short as possible and additionally twisted.
  • If the terminal is to be operated with a sum current >10 A added over all channels, it is mandatory to connect the LED supply voltage to terminal point 3 and 7, as well as 3 and 4, as one contact has a maximum current carrying capacity of 10 A.
  • To ensure that all LEDs in a strip have the same brightness, the voltage drop across the line must be taken into account. It may be necessary to refeed, especially for a long strip.

Commissioning in TwinCAT

If the LED lighting has been connected to the terminal as described above and the network has been scanned, the lighting setting can be made.

This commissioning example describes commissioning with the preset predefined process image "4 Ch".

  1. Check warning and error bit at PWM Inputs Channel n → Status. If both bits are "0", you can continue with step 2.
  2. Set the duty cycle at PWM Outputs Channel n. The set value must be between 0 and 32767, which corresponds to a duty cycle of 0 to 100%. By using different values of the duty cycle for the different channels, any color mixture can be achieved for connected multicolor LEDs.