When connected, the sensor is constantly triggered.
If you set the homing and limit functions to one, the controller goes into alarm.
At the same time, if you try to press reset, nothing comes out, because the hard lim blinks.
In the program, in the Diag. window, the sensor connection indicators, limits, as well as the home indicator blink.
I use common Chinese sensors without a screen.
The first two photos show how the diodes look on the controller and on the sensor itself during normal operation, when you bring metal to the sensor (the sensors are fine, I connected them after, without a controller, everything works properly).
- LED on axxb while npn sensor is on
- LED on the sensor while its on
But when it is in its normal state, as if a false current is passing through it, in the third and fourth photos it is clear that the diode on the controller is on, it does not light brightly, but still it indicates that the sensor triggers, although it shouldn't.
- LED on axxb must be off
- LED on the sensor must be off
I tried to connect other sensors, to other ports, nothing.
I tried to connect not npn but pnp way, nothing.
In addition, I tried to connect the sensor to the port on Ucsb, but it does not even detect it)
Perhaps the problem is in the frequency converter, it gives interference, but this is strange, my other frequency converter does not affect the sensors at all, and they are also without a screen.
- My setup
I hope I explained.
