R900597158 DR30-5-5X/200YM Hydraulic valve German Rexroth pressure reducing valve

Frequently Asked Questions (FAQ) for DR 30-5-5X/200YM (Order Code: R900597158)

Q1: What is the main function and application of this valve?

A:​ It is a high-flow proportional pressure reducing valve. Its primary function is to provide electronically controlled, stable lower pressure in a high-flow branch circuit. It is commonly used in large hydraulic systems such as presses, plastic machinery, and heavy-duty industrial equipment for tasks like clamping force control, tensioning, and pilot pressure supply.

Q2: What is the key difference between the "200YM" and "100Y" versions in the DR 30 series?

A:​ The two main differences are:

• Maximum Reduced Pressure:​ The 200YM model provides up to 200 bar, while the 100Y is limited to 100 bar.

• Control & Wiring:​ The "YM"​ suffix indicates a proportional solenoid with On-Board Electronics (OBE)​ that accepts a direct PWM signal. The "Y"​ version (without "M") requires an external analog amplifier.

Q3: What does "NG 30" mean for system design?

A:​ NG 30​ is the Nominal Size 30, indicating a large valve interface designed for high flow rates. It requires correspondingly sized NG30 piping, subplates, and manifolds. Its estimated flow capacity is about 400 l/min, significantly higher than NG20 (~250 l/min) or NG10 (~80 l/min) valves.

Q4: How is this valve controlled?

A:​ It is controlled by a 24V DC PWM (Pulse Width Modulation) signal. The valve's integrated electronics (OBE) simplify control, as the signal can typically be supplied directly from a PLC's PWM output or a standard motion controller, without needing an external analog amplifier.

Q5: How is it installed into a hydraulic system?

A:​ It is a sandwich valve. It is installed between an NG30 interface subplate​ (mounting surface per ISO 7368) and another valve or cover plate stacked above it. This allows for the creation of compact, custom valve manifolds for complex circuits.