I noticed a few other topics related to turnstiles.
We are using a ProXR Lite relay board to control 4 turnstiles via enterprise software called Fusion. We have a random dropout of USB devices (card readers at the turnstiles) to our control PC. Causing gates to not open. Works fine for a while after a reset
Turnstiles are wired directly with dry contacts to the relay board.
Relay boards are powered by external power and USB is plugged into a USB hub.
USB Hub also has usb-cat5 extenders plugged in (for the card readers).
Would an Induction suppression capacitor be needed? If so, where would they be wired into?