A4VSO250LR2G/30R-VZB13N00 A4VSO250LR2G/30R-VPB25N00 A4VSO250DFR/30R-PPB13N00
A4VSO250DFR/30R-VPB25N00 A4VSO250DRG/30R-VZB13N00 High pressure pump A4VSO250 piston pump Rexroth German hydraulic pump

FAQ:

Frequently Asked Questions (FAQ): Rexroth A4VSO Series Control Methods

Q1: What are the primary control methods available for the Rexroth A4VSO series pumps?

The A4VSO series offers a wide range of control methods to suit various hydraulic system requirements. The primary control types include:

• DR: Pressure Control (or Constant Pressure Control).

• FR: Flow Control.

• LR: Dual-Line/Hyperbolic Constant Power Control (Automatically regulates power consumption).

• MA: Manual Control.

• EM: Electric Motor Control.

• HM: Hydraulic Control, Flow-Dependent.

• HS: Hydraulic Control with Servo/Proportional Valve.

• EO / EO2: Electronic Proportional Control.

• HD: Hydraulic Control, Pressure-Dependent.

• DS: Speed Control for Secondary Control.

Q2: How do I decipher the control method from a typical A4VSO model code?

The control method is a critical part of the pump's model designation. It is typically represented by two or three letters in the code sequence (e.g., A4VSO180DR/30R-PPB13N00).

• In this example, DR signifies the control type, which is Pressure Control.

• Other suffixes like LR (Constant Power), FR (Flow Control), or EO (Electronic Control) directly indicate the specific control method employed by that pump unit.

Q3: What are some common applications for different A4VSO control types?

The choice of control method depends heavily on the application's needs:

• DR (Pressure Control): Ideal for systems requiring a constant pressure level, often used in clamping circuits or press applications.

• LR (Constant Power Control): Well-suited for applications where the input power needs to be limited automatically, protecting the drive system despite pressure and flow variations, potentially useful in mobile equipment or complex industrial machinery.

• EO (Electronic Proportional Control): Offers precise control over pump operation (like flow or pressure) via an electrical signal, commonly found in modern automated machinery and process control systems requiring high precision.

• FR (Flow Control): Used when a constant flow output is desired regardless of pressure changes (within the pump's capabilities).

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