Kanalog Opto in limit switch current LED
Posted: Sat Apr 23, 2022 3:47 pm
I am upgrading my limit switches to 5 micron accurate limit switches from Metrol. They will be 24vDC and interfaced to the Kanalog opto isolated inputs on JP15. See attached PDFs for the switches.
These switches have an LED in series without any current or voltage limiting included. Metrol suggests a 2K resistor to be added in series for a 24vDC system. Something like this (my note of opto terminals in red):
Per the spec's for Kanalag, I noticed the opto inputs already have a 10k resistor in series
Thanks.
These switches have an LED in series without any current or voltage limiting included. Metrol suggests a 2K resistor to be added in series for a 24vDC system. Something like this (my note of opto terminals in red):
Per the spec's for Kanalag, I noticed the opto inputs already have a 10k resistor in series
Does this mean I will not need the addition of the 2K?Opto Isolated Inputs = (8) 3-24V input, internal 10KOhm series resistor
Thanks.