R901029969 DBETE-6X/315G24K31/A1V Rexroth proportional valve overflow valve

FAQ:

1. Integrated Electronics (OBE)

   The "E"​ in DBETE​ indicates that the valve has on-board electronics (OBE). Unlike the DBET​ series which require an external amplifier, this valve integrates the amplifier electronics. You supply a 0 – 10 V​ command signal directly to the valve's connector, and the internal electronics generate the coil current. This simplifies wiring but limits heat dissipation compared to external amplifiers.

2. Low Flow Capacity (2 L/min)

   This is a direct-operated seat valve. It provides excellent sealing (zero leakage at closed center) but is strictly limited to 2 L/min. Exceeding this flow will cause excessive pressure override. It is not​ a main system relief valve for high-flow circuits.

3. Pressure Rating (315 bar)

   The "315"​ denotes the maximum electrically adjustable pressure rating​ of 315 bar. The valve's mechanical pressure limit is much higher (420 bar), but the proportional control range is optimized for 0–315 bar. This is the highest standard pressure variant in the DBETE series before the special 350/420 bar models.

4. Electrical Interface (K31/A1)

   • K31: 7-pin round connector (6 signal pins + PE). This provides power and signal interface.

   • A1: Command value input is 0 – 10 V​ (0 V typically sets 0 bar, 10 V sets 315 bar). The internal electronics handle the current control.

5. Critical Installation Notes

   • No External Amplifier Needed:​ Since it has OBE, you do not need a separate VT-5000 series amplifier. Connect 24V DC power and the 0–10 V signal directly to the valve.

   • Flow Limitation:​ This valve is for pressure control, not for dumping high flows. It is typically used as a pilot valve for larger cartridge valves or for precise pressure control in small circuits.

   • Return Line Pressure:​ Port T must be connected directly to tank with minimal backpressure. High backpressure will directly reduce the effective setting pressure (P_set = P_solenoid - P_T).