Description Size 6 Component series 3X Maximum operating pressure 350 bar Maximum flow 80 l/min Nominal flow 8 … 32 l/min Digital interface IO-Link for I4.0 Features Reliable - proven and robust design Energy-efficient - no pilot oil demand, high flows with low pressure differential Flexible - suitable for position and velocity control Precise - high response sensitivity and little hysteresis IO-Link interface, optional Product description The valve type 4WRPE is a direct operated directional control valve with electric position feedback and integrated electronics (OBE). Set-up The valve basically consists of: Valve housing (1) Control spool (2) with compression springs (3.1 and 3.2) Control solenoid with position transducer (4) (optional with electronics protection membrane (8)) Stroke solenoid (7) On-board electronics (OBE) (5) with IO-Link interface (optionally with damping plate (9)) Function The integrated electronics (OBE) compares the specified command value to the position actual value. In case of control deviations, the relevant solenoid will be activated. Due to the changed magnetic force, the control spool (2) is adjusted against the corresponding spring. The stroke/control spool cross-section is regulated proportionally to the command value. In case of a command value presetting of 0 V, the electronics adjust the control spool (2) to central position. Error detection In the following cases of error, the electronics will de-energize the control solenoids: Falling below the minimum supply voltage ≤15 V (restarting ≥17.5 V). Interface "L1": Enable inactive, communication interruption (watchdog) In case of internal IO-Link error The control spool (2) is kept in the mechanical central position by the compression springs (3.1 and 3.2) (with symbol V, this does not correspond to the hydraulic central position). Safe shut-off with IO-Link With symbols E, E1-, W and W1-, the valve can be used as shut-off element in applications of categories 1, 2 or 3 with up to PL d in compliance with EN 13849-1. Depending on the category or application, additional safety measures must be taken according to EN 13849-1 and operating instructions 29118-B must be observed. In every safety-relevant application, a safe shut-off of the IO-Link-B voltage (pin 2 and 5) must be ensured according to EN 13849-1. The safe shut-off is not part of the IO-Link valve and must be taken into account for the safe design of the machinery. Damping plate "D" The damping plate (9) reduces the acceleration amplitudes on the on-board electronics (frequencies >300 Hz). Notice: Using the damping plate is not recommended for applications with mainly low-frequency excitation Electronics protection membrane "-967" To prevent condensate formation in the housing of the integrated electronics (OBE), an electronics protection membrane (8) can be used. Recommended for use outside industry-standard conditions with high ambient air humidity and significant cyclic temperature changes (e.g. outdoo
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