R901382346 4WRPEH6C4B24L-3X/M/24A1 Rexroth Germany Proportional Electromagnetic Directional Valve

FAQ:

1. Spool Type (C4)

   The C4 spool​ is a zero-overlap (critical center) spool​ with servo-valve quality. This design provides high linearity and fast response, ideal for closed-loop control applications. The "B24L" indicates a specific flow gain characteristic (24 L/min​ with linear characteristic "L").

2. Control & Feedback (/A1)

   The /A1​ suffix indicates a ±10 V DC voltage input​ for the command signal. The valve features integrated LVDT position feedback, enabling full closed-loop control of the spool position. Unlike the 4WRPH series, this valve has integrated on-board electronics (OBE), so it does not require an external amplifier.

3. High Dynamic Performance

   As a direct-acting valve with integrated electronics, the 4WRPEH series offers high frequency response​ and fast step response. It is suitable for applications requiring servo-like performance with the robustness of a proportional valve.

4. Fail-Safe Behavior

   This valve is single-side actuated​ (single proportional solenoid with spring return). In the event of power failure, the spring returns the spool to a defined 4/4 fail-safe position​ (typically all ports blocked or P to B, A to T, depending on spool configuration).

5. Critical Installation Notes

   • Cleanliness:​ Maintain high oil cleanliness (recommended ISO 4406 18/16/13 or better) due to the sensitive servo-type spool and sleeve assembly.

   • Voltage Supply:​ Ensure a stable 24V DC supply (18...30 VDC) with low ripple to avoid noise in the control signal.

   • Mounting:​ Use the correct ISO 4401-03 subplate to ensure proper port alignment and sealing.