Method and control system for operating a magnetic valve for pneumatic brake cylinders

The invention relates to a method of operating a solenoid valve (10) for pneumatic brake cylinders, wherein said solenoid valve (10) is activated by means of a pick-up current and operated by means of a clocked continuous flow comprising the steps of: for switching on the valve (10) is applied to this with a pull-in current for a period of time T after reaching the starting current is switched to a pulse-width modulated clocked holding current, yielding a clocked continuous-current signal in which the clocked constant current signal is cleared slowly via diode (22), so that a coil DC with superimposed slight alternating current is adjusted for turning off the solenoid valve of the switch (18) is opened so that a rapid quenching takes place The current at the solenoid valve (10) is monitored by a monitoring device (26) and all switching elements (diodes, transistors) and the solenoid coils are constantly monitored both during operation and when turned off.