Gates tripped

[Phil.c]

I’ve just checked the sensors, one is getting 24v the other 0, I’ve checked the wiring from the PCB board to the sensor for any breaks and it’s ok, however, the powered sensor has power from terminal 10 the dead one from 2 and with a green return, the wiring hasn’t been changed, I’m guessing that the two sensors should have constant power?
If so, does this mean that the PCB board has fails, any help please.