Rexroth VT‑VPCD‑1‑18/V0/1‑0‑1 R901044346 Amplifier
Product Introduction
Rexroth VT‑VPCD‑1‑18/V0/1‑0‑1 R901044346 belongs to the VT‑VPCD series digital closed‑loop control electronic card. It adopts European standard plug‑in card structure, specially adapted for A4VS axial piston pumps with HS4 control and A2V axial piston pumps with EO4 control, to realize closed‑loop control of pump swashplate angle, system pressure and power limitation.
VT‑VPCD‑1‑18/V0/1‑0‑1 R901044346 receives feedback signals from swashplate angle sensor and pressure sensor, outputs drive signals to control the matched proportional valve of the pump, and completes full‑digital regulation of hydraulic variable pump. This amplifier relies on high‑speed scan cycle to guarantee hydraulic dynamic response, and is widely used in industrial electro‑hydraulic variable pump control systems.
VT‑VPCD‑1‑18/V0/1‑0‑1 R901044346 can be directly installed inside standard 19‑inch cabinet card rack, meeting the integrated installation requirements of industrial site electric control cabinets.
Technical Specifications
| Operating supply voltage | 24 VDC, allowable voltage fluctuation ‑5% ~ +60% |
| Total power consumption | Less than 50 VA |
| Max. coil drive current | 800 mA |
| Card dimension | 100 × 160 mm, Euro card format, 3HE height |
| Connector | 32‑pin DIN 41612 D‑type terminal block |
| Scan cycle | 2 ms |
| Communication interface | RS232 9‑pin D‑Sub for parameter commissioning |
| Operating ambient temperature | 0 ℃‑50 ℃ |
| Storage temperature | ‑25 ℃‑85 ℃ |
| Unit weight | 0.15 kg |
| Analog input signal | ±10 V, differential signal input supported |
| Status indication | LED ready indicator, strobe input status LED |
| Ramp adjustment | On‑board potentiometer for custom ramp time |
| Bus configuration | Version without fieldbus interface |
Core Advantages
- VT‑VPCD‑1‑18/V0/1‑0‑1 integrates complete pump closed‑loop control algorithm, no extra external controller required, simplifying hydraulic electric control system architecture.
- 2‑ms high‑speed scan cycle ensures pressure and flow of variable pump quickly follow command signals and improves dynamic performance of hydraulic equipment.
- The card is equipped with hardware status indicator LEDs for intuitive on‑site fault troubleshooting, reducing equipment downtime for maintenance.
- Standard Euro‑card form factor is compatible with multiple industrial card racks on the market, making renovation and replacement of existing VT‑VPCD series cards simple.
- Local parameter tuning via RS232 serial port; gain, ramp and power‑limit parameters can be modified to match working conditions of different hydraulic pumps.
Multi‑protection logic including pressure limit, swashplate angle limit and power limit protects axial piston pumps from overload damage.
Product Features
- Digital closed‑loop control, collecting dual feedback signals of swashplate angle sensor and system pressure sensor to realize multi‑variable coordinated control.
- Differential analog signal input effectively suppresses electromagnetic interference in industrial environment and guarantees stable acquisition of command signals.
- Hardware potentiometer adjustable ramp time realizes flexible control of flow rise/fall rate and avoids hydraulic shock.
- LED ready status display intuitively feeds back operating status of VT‑VPCD‑1‑18/V0/1‑0‑1 R901044346.
- 32‑pin DIN standard connector with wiring definition complying with unified specification of VT‑VPCD series to lower probability of wiring errors.
- No built‑in fieldbus, focusing on local closed‑loop control, suitable for hydraulic systems without host computer bus communication.
- Non‑volatile memory stores calibrated parameters; configuration data will not be lost after power‑off.
- Complete fault monitoring logic can identify common fault conditions such as sensor wire breakage and drive output abnormality.
Application Fields
- Metallurgical hydraulic systems: control of variable pump power units for rolling mills and extruders
- Heavy‑duty machine tool electro‑hydraulic drive: hydraulic power stations for large forging equipment
- Mining engineering machinery hydraulic electric control: flow and pressure regulation of high‑power variable pumps
- Injection molding equipment: closed‑loop control of main hydraulic pumps for large injection molding machines
- Ship deck hydraulic power systems: control of marine variable piston pumps
- Hydraulic test‑bench systems: variable source control for comprehensive hydraulic test benches
- Wind‑power hydraulic stations: power‑limit control for high‑power hydraulic pumps
General industrial high‑power electro‑hydraulic variable pump complete control systems
Matching Related Models
- Matching axial piston pumps: A4VS series variable pumps with HS4 control, A2V series variable pumps with EO4 control
- Swashplate angle sensor: AWX F004 D01 swashplate angle sensor
- Pressure sensor: HM20‑2X series pressure sensor
- Card racks: VT19101, VT19102, VT19103, VT19110, VT12302, VT3002‑2X/48F
- Blind plate accessories: R900021004 (4TE/3HE blind plate for blocking vacant rack positions)
- Alternative cards of same series: R901102344 VT‑VPCD‑1‑1X/V0/1‑C‑1 (CANopen), R901102347 VT‑VPCD‑1‑1X/V0/1‑D‑1 (DeviceNet), R901089559 VT‑VPCD‑1‑1X/V0/1‑P‑1 (Profibus‑DP)
FAQ
Q:Can VT‑VPCD‑1‑18/V0/1‑0‑1 R901044346 directly control ordinary proportional directional valves?
A:VT‑VPCD‑1‑18/V0/1‑0‑1 R901044346 is a closed‑loop control card specially for A4VS and A2V variable piston pumps. It is not recommended to directly drive ordinary proportional directional valves. For general proportional valves, please select VT‑series general proportional amplifier cards.
Q:What are the power‑supply voltage requirements for VT‑VPCD‑1‑18/V0/1‑0‑1 R901044346?
A:The standard operating supply is 24 VDC with allowable input voltage fluctuation of ‑5%~+60%. The power supply shall have sufficient output current capacity.
Q:What communication methods does VT‑VPCD‑1‑18/V0/1‑0‑1 R901044346 support?
A:This model has no field‑bus interface and is only equipped with RS232 9‑pin D‑Sub serial port for local PC parameter commissioning. If CANopen or Profibus‑DP is required, please select corresponding suffix models of VT‑VPCD.
Q:Is it necessary to re‑commission parameters after replacing VT‑VPCD‑1‑18/V0/1‑0‑1 R901044346 card?
A:New cards contain no project parameters. After replacement, you need to import parameters via RS232 interface or re‑tune configurations such as gain, ramp and power limit on‑site.
Q:Which rack model should be selected for VT‑VPCD‑1‑18/V0/1‑0‑1 R901044346?
A:It is compatible with 19‑inch racks VT19101, VT19102, VT19103, VT19110, also applicable to enclosed rack VT12302 and open‑type rack VT3002‑2X/48F.
Q:How to troubleshoot when ready LED is off and VT‑VPCD‑1‑18/V0/1‑0‑1 R901044346 has no output?
A:First check 24VDC power input, confirm enable‑signal terminal level status, inspect sensor wiring for wire breakage, verify 32‑pin DIN terminal wiring definition, and check for hardware short‑circuit faults.
Q:Can VT‑VPCD‑1‑18/V0/1‑0‑1 R901044346 and VT‑VPCD‑1‑1X/V0/1‑P‑1 be directly interchanged?
A:Physical installation dimensions are identical, yet the latter has integrated Profibus‑DP bus function with different terminal definitions. Direct interchange is not allowed; modification of electric control wiring is required.
Product Tags
Rexroth VT‑VPCD‑1‑18/V0/1‑0‑1, R901044346, VT‑VPCD series, axial piston pump controller, hydraulic amplifier card, proportional control electronic device, Euro‑card amplifier, Rexroth hydraulic control card, variable displacement pump closed‑loop controller
Supplementary Notes
VT‑VPCD‑1‑18/V0/1‑0‑1 R901044346 is the basic version of VT‑VPCD series without industrial field‑bus interface, only supporting RS232 local commissioning. This card is not a general‑purpose proportional‑valve amplifier; its functions focus on closed‑loop control of variable piston pumps. During model selection, please verify pump control type HS4 or EO4.
The whole unit must be installed inside electric control cabinet with shielded wiring to reduce electromagnetic interference generated by frequency converters and other equipment and ensure stable sensor signal acquisition. Parameter modification operations shall refer to official operation manual. Improper parameter settings may cause hydraulic system shock and pump overload.
