The intrinsically safe PROFIsafe Input Module (750-663/000-003) for functional safety provides risk reductions up to SIL 3, Cat. 4, PL e, and connects to potential-free, contact-based emergency stop switches, safety door switches, mode selectors, as well as safety sensors, that are located hazardous environments 0, 1 and 2. The fail-safe input module must be located in Zone 2. The input module features four clock-sensitive inputs (I1 … I4) that are fed by two differently clocked outputs (T1 … T2). Inputs are continually monitored for cross circuits and power supply from separate sources. Additional safety-relevant functions (e.g., operating modes, switching off test pulses, discrepancy or filter times) can be configured via WAGO-I/O-CHECK. This configuration tool supports both CC2 and CC3 tool calling interfaces (TCI). When exchanging the module, parameters are automatically downloaded by the controller via PROFIsafe-compatible iPar server – depending on settings. The module supports both PROFIsafe V1 and V2 (PROFIBUS, PROFINET) protocols. Individual modules can be arranged in any combination within the fieldbus node's Ex segment.
