During the die‑changing operation on a sheet‑metal stamping press, the PSS safety controller module is mounted in the plant’s safety PLC and directly supervises all door and interlock sensors. When a safety gate is opened, the module evaluates the input, generates a safe‑stop command and disables the hydraulic drive before the press can be energized, allowing the operator to replace the die without risk. The same unit also collects signals from light curtains that guard the work area, from emergency‑stop buttons on the press frame, and from position switches that confirm the die is correctly seated. By processing these inputs in a dedicated safety channel, the module isolates the safety logic from the standard automation program, preventing accidental cross‑talk and guaranteeing a rapid, deterministic response. In a stamping line, the module can be linked to a conveyor safety system, halting material feed the moment a safety breach is detected, thus protecting both the machine and the workforce.