R901507310 4WRPEH10C3B100L-3X/M/24F1 Proportional directional valve from Rexroth, Germany

FAQ:

1. Spool Type (C3)

   The C3 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 "B100L" indicates a specific flow gain characteristic (100 L/min​ with linear characteristic "L").

2. Control & Feedback (/24F1)

   The suffix /F1​ indicates a 4...20 mA current input​ for the command signal. The valve features integrated LVDT position feedback, enabling full closed-loop control of the spool position. It 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 or signal loss (current < 4 mA), the spring returns the spool to a defined 4/4 fail-safe position​ (typically all ports blocked).

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.

   • Current Signal:​ The /F1 version uses a 4...20 mA current signal, which is less susceptible to noise interference over long cable runs compared to voltage signals.

   • Mounting:​ Use the correct ISO 4401-05 (NG10) subplate to ensure proper port alignment and sealing.