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.
The PROFIsafe Input Module must only be operated using an Ex i 24 VDC power supply (e.g., 750-606, 750-625/000-001)! General information (e.g., installation regulations) on explosion protection is available in the WAGO I/O System 750 manuals!
To protect the module against surge voltages (surge protection per IEC 61000-4-5), a filter module (750-626 or 750-624) or an external surge filter must be used upstream of the Ex i 24 VDC power supply.
Reference the product manual for further information!