I've been playing some scenarios on Dresden - Chemnitz with PZB but every time it wants me to go through a red signal PZB stops me when I pass through the signal. Is there a button I need to press to stop this from happening? Or should I leave PZB off
Yes you need to hold pzb restricted I think which allows you to go through a magnet that is has a red signal
It's the Befehl40 or "PZB Override" button, hold it down and travel at under 40km/h through the red - you can release it as soon as you are past the signal. Pressing the button down basically suppresses the 2000hz magnet from having an effect on the train. The left-most switch on the PZB bank of switches if i recall.