In a web-fed rotary printing machine having a plurality of cylinders rolling
on
one another, each cylinder is driven by a respective drive motor, and a control
device synchronizes the motors to run at the same speed. The control device has
stored therein a control program which can be activated in the event of a web break.
The control program has an emergency stop ramp which brakes the motors to a standstill
by jerked stop, preferably within five revolutions, the program driving the motors
along the stop ramp in the event of a web break.
