The 5/2 RSe Series valve can be utilized for Safe Pressure Select Applications in order to safely control the pressure applied to a machine operation, such that a specified pressure is the default pressure and only when an appropriate signal is given supplies a different pressure. The default pressure would be used whenever safe operator access is required for production-related tasks and/or when a fault in the safety valve occurs. For example, a device such as a clamp may use full force when normally operating but revert to a reduced force, and therefore risk, when an operator has to intervene

in the process and access a potential hazard. The safety function of the 5/2 RSe Series pressure select valve is to supply the pressure supplied to port 2 whenever a fault occurs within the valve. However, the RSe Series does this with the same level of control, up to Category 4 PL e, expected of the machine’s/system’s safety circuit.

The RSe Series valves are designed for external monitoring for safe, redundant operation of the valves. Such a monitoring system must be capable of inhibiting the operation of the valve. The RSe Series valves are constructed of redundant 5/2 spool type valves, and have an overall function of a single solenoid pilot-operated, spring return valve. Each single valve in the RSe Series is equipped with a PNP proximity sensor. Monitoring both of these sensors on each actuation and de-actuation of the RSe Series valve provides a diagnostic coverage of 99%. Monitoring of these sensors is to be done by an external monitoring system.