Since the Ender 3 S1 does not come with a Z endstop preinstalled you will need to connect the included Z endstop cable that came with your Ender 3 S1 from the J713 header on the control board to the EZABL control board as shown in the pictures below.
Because of how BTT has their endstop filtering done on their boards it can make the EZABL not function correctly when connected to the Z endstop. You should use the “Probe” port instead of the “Z-STOP” port for connecting to the EZABL signal side.
Issue If your Z Endstop is not triggering this could be due to a manufacturer wiring configuration on your Z endstop connector. The EZABL board has been set up based on testing of multiple machines that we have in house. But after sending out many kits it appears that the wiring that manufacturers use are […]
The Tevo Tarantula Pro uses a 3 pin endstop switch on all axis. These carry the Signal, 5V, and GND lines. The 5V line is there to light up the status LED on the endstop boards. This however is not needed and must be removed before connecting the EZABL control board to the endstop wiring. […]