A control system (100) for a functional section (I, II, III) of a paper processing device (140). The control system (100) has at least one safety-monitoring camera (110, 120, 130) which is arranged in the functional section (I, II, III) such that a functional region of the functional section (I, II, III) can be captured by the safety-monitoring camera (110, 120, 130). An operating unit (101) of the system (100) is designed to operate the functional section (I, II, III), and image data of the at least one safety-monitoring camera (110, 120, 130) can be selected by the operating unit (101). A display unit (103) is configured to display the selected image data such that a user allows or blocks the operation of the functional section (I, II, III) based on the displayed image data. A safety device (102) is coupled to the safety-monitoring camera (110, 120, 130) and the operating unit (101), and the safety device (102) receives image data of the safety-monitoring camera (110, 120, 130). The safety device (102) is configured such that the safety device (102) allows or blocks the operation of the functional section (I, II, III) by means of the operating unit (101) on the basis of the received image data of the safety-monitoring camera (110, 120, 130).

Systems and methods for mapping and/or repairing the surface of calender roller while the calender roller is still installed in the calender roll system are described. The methods for mapping and repairing a surface of a calender roller may comprise providing a calender roll system comprising a calender roller, mapping a surface profile of the calender roller, identifying a dent area on the surface of the calender roller at least partially based on the surface profile, and depositing a material at the dent area. The systems for mapping and repairing the surface of the calender roller are also described.