Check whether the valve group is energized. <br>When the Y-axis returns to the reference point, observe whether the light on the valve group is on. If there is no light, it means that the valve group is not energized.
Check that the valve stem is powered on<br>When the Y-axis returns to the reference point, observe if the light on the valve stem comes on. If it is not lit, the valve stem is not powered on.
Check that the valve block is energized<br>When the y-axis returns to the reference point, observe whether the light on the valve block is on. If it is not on, the valve block is not energized.<br>