In the picture, what does High250bar mean? Can it only be used at pressures above 250 bar?
mmmm don't think so, if my understanding is correct (never been schooled for the programmer, DIY kind of guy jaja) is the max mid and low info the solenoid needs in order to compensate how long and fast gets open (I might be wrong) and the low gives the low pressure warning when that pressure is achieved.
It is a program input. They are rated at 250 bar max working pressure so that is the reference point for that pressure . You have 3 programmable inputs.... dwell(microseconds), pressure points(in BAR), and volts. Adjusting any of these affects the table that the processor uses to decide how long and hard the hammer hits the valve. In your case, the processor will apply a 69.58 volt pulse for 3250 microseconds to the hammer when your pressure is at 250 bar. Note that as pressure goes down, so does the dwell time. It gets easier to open the valve but it might need to stay open just a little longer to accelerate the pellet to the same velocity because the pressure is lower.
Hope this helps.
Bob