Rexroth VT-VPCD-1-15/V0/1-P-1 Digital Closed-loop Control Amplifier for HS4 Axial Piston Variable Displacement Pump

Product Description

VT-VPCD-1-15/V0/1-P-1 is a standard Eurocard plug-in digital hydraulic closed-loop control amplifier developed by Bosch Rexroth Germany, belonging to the VT-VPCD 

series pump dedicated controller.

It is specially matched with A4VS series HS4 control axial piston variable pumps and A2V EO4 control pumps, receiving analog setpoint signals (0–10V/4–20mA) from PLC/NC system, 

realizing closed-loop PID regulation of pump output pressure, flow and power limitation. The board collects pump displacement feedback sensor signals, drives proportional solenoids to 

adjust pump swashplate angle, completes constant pressure, constant flow, constant power composite control logic.

Adopts DIN41612 64pin rear bus connector, front panel potentiometers for gain/offset/ramp adjustment, working status LED indicators, conformal coated PCB, standard 19-inch 

cabinet subrack plug-in installation. It is a core vulnerable spare part for large hydraulic stations, metallurgical rolling mills, injection molding machines, die-casting equipment and 

heavy machinery hydraulic systems.

Technical Specifications

Model: VT-VPCD-1-15/V0/1-P-1, Brand: Bosch Rexroth, Origin: Germany

Matching Pump: A4VS HS4 control variable displacement axial piston pump, A2V EO4 pump

Control Mode: Digital closed-loop pressure/flow/power three-loop compound regulation

Power Supply: 24VDC industrial DC power supply (allowable range 18~32VDC)

Command Input Signal: 0~10VDC voltage signal / 4~20mA current signal configurable

Feedback Signal: LVDT displacement sensor feedback from pump swashplate

Output Drive: PWM chopped wave drive for pump proportional solenoid, max driving current 1.5A

Adjustment Function: Front panel potentiometer for zero offset, gain, acceleration/deceleration ramp time, dead zone compensation

Diagnosis Function: Solenoid short/open circuit detection, sensor fault alarm, running/fault LED indication

Bus Interface: DIN 41612 standard 64-pin rear connector for rack backplane connection

Mounting Standard: 3TE width European standard plug-in card (subrack rack installation)

Operating Temperature: 0℃ ~ +55℃ continuous operation

Storage Temperature: -25℃ ~ +70℃

Humidity: 5%–95% non-condensing, anti-vibration & moisture-proof conformal coated circuit board

Protection Class: IP20 (only installed inside electrical control cabinet)

Net Weight: Approx. 0.32kg

Certifications: CE, EMC industrial anti-interference certification

Key Features

Professional closed-loop algorithm for variable plunger pump, realize stable constant pressure, constant flow and power limiting load protection, effectively prevent motor overload and hydraulic 

system overflow loss.

Built-in independent ramp generator, smooth acceleration and deceleration setting avoid hydraulic impact and pipeline pressure shock during pump output switching.

Complete hardware self-diagnosis system, real-time monitor proportional coil breakage, displacement sensor loss and internal circuit failure, lock output and trigger fault alarm.

Standard European plug-in card structure, power-off one-to-one direct replacement for damaged modules, no need to modify rack wiring, convenient for on-site maintenance.

Multi-point adjustable parameters on the front panel, no upper computer software required for simple on-site debugging and calibration, greatly shorten equipment downtime.

Strong anti-electromagnetic interference performance, filter circuit and isolation design adapt to harsh workshop environment with frequency converters and large motor strong EMI interference.

Mature hydraulic control dedicated hardware platform, long-term mass application in metallurgy, heavy machinery, hydraulic press, offshore hydraulic power unit and other high-demand scenarios.

Full compatibility with the entire HS4 control A4VS pump series, perfectly matching Rexroth original hydraulic system control logic.