Description
Product Overview
The Bosch Rexroth R900952202 VT-VRPA1-50-1X is an analog electronic amplifier card designed for proportional hydraulic valve control. It processes electrical command signals and converts them into controlled output current for the valve solenoid. This allows a hydraulic system to regulate pressure or flow according to the command provided by the machine controller or operator interface. The module is intended for industrial hydraulic applications where accurate electrical control of proportional valve operation is required.
The VT-VRPA1 family belongs to Bosch Rexroth’s proportional electronics range. Depending on the configured amplifier and valve combination, these modules support hydraulic pressure-control or flow-control applications. Bosch Rexroth documentation describes the broader VT-VRPA1-5 family as suitable for proportional pressure valves, proportional flow-control valves, and high-response valves. The exact valve compatibility of the R900952202 VT-VRPA1-50-1X should be confirmed against the corresponding circuit diagram and valve type.
The card uses a Eurocard format with a 32-pin DIN 41612 male connector. This plug-in design supports installation in a compatible electronics rack. The documented VT-VRPA1-50 family specifies a card size of 100 × 160 mm and a front-panel height of 3 HE. These mechanical details are important when checking rack compatibility, but the complete connector allocation and electrical configuration must still be matched to the installed system.
For maintenance procurement, the Bosch Rexroth R900952202 should be matched by both material number and complete type designation. Check the valve solenoid rating, command-signal configuration, amplifier settings, and rack wiring before replacement. Incorrect amplifier-to-valve matching can cause improper current regulation and unstable hydraulic response.
Product Introduction (Non-Templated)
A proportional valve depends on its amplifier for controlled solenoid current. If the amplifier configuration does not match the valve coil or command signal, the hydraulic system may respond incorrectly even when the valve itself is mechanically sound.
The R900952202 VT-VRPA1-50-1X is a plug-in analog amplifier card for hydraulic control applications. Before commissioning a replacement, verify the original amplifier settings, valve designation, command signal, rack connector allocation, and output-stage requirements.
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Bosch Rexroth |
| Material Number | R900952202 |
| Model | VT–50-1X |
| Product Type | Analog proportional valve amplifier |
| Product Family | VT- |
| Application | Proportional hydraulic valve control |
| Control Function | Electrical command-to-solenoid current amplification |
| Card Format | Eurocard |
| Card Dimensions | 100 × 160 mm |
| Connector | 32-pin male DIN 41612, form D |
| Front Panel Height | 3 HE (128.4 mm) |
| Operating Temperature | 0 to +50°C |
| Storage Temperature | -25 to +70°C |
| Weight | Approximately 0.15 kg |
| Supply Voltage | Not verified for exact material number |
| Input Signal Range | Not verified for exact material number |
| Output Current | Not verified for exact material number |
| Valve Compatibility | Confirm exact valve and solenoid designation |
| Mounting | Compatible electronic rack; verify rack configuration |
The connector, dimensions, temperature range, and weight are documented for the VT–50 family. Do not substitute electrical values from other VT- variants without checking the exact model documentation.
R900952202 VT-VRPA1-50-1X
Related Products
- VT–527-10/V0 — Analog amplifier configuration for a 2.7 A solenoid.
- VT–527-10/V0/PV — Pressure-valve amplifier configuration.
- VT–537-10/V0/PV — Amplifier configuration for a 3.7 A solenoid and pressure-valve application.
- VT–537-10/V0/QV — Flow-control amplifier configuration.
- VT–527-10/V0/QV — Flow-control amplifier configuration for a 2.7 A solenoid.
- VT–100 — Analog amplifier for proportional pressure-control valves with electrical position feedback; a different configuration, not a direct replacement.
- VT-VSPA1 — Related Bosch Rexroth proportional amplifier family.
- VT-VARAP1 — Related Bosch Rexroth analog amplifier family.
Frequently Asked Questions
Q1: What is the Bosch Rexroth R900952202 used for?
It is identified as -1X analog amplifier card for proportional hydraulic valve control. It processes electrical command signals and controls the valve solenoid through its output stage.
Q2: Is the suitable for proportional pressure and flow valves?
The VT–5 family covers pressure-control and flow-control applications. However, suitability depends on the exact amplifier configuration and valve type. Confirm the valve designation before installation.
Q3: What connector does th-1X use?
The documente version uses a 32-pin male DIN 41612 connector, form D.
Q4: Can I hot-swap the ?
Hot-swap capability is not verified. Isolate the electrical supply and follow the hydraulic system’s approved maintenance procedure before removing the amplifier card.
Q5: Does the support firmware v3.1?
This is an analog electronic amplifier card, not a general-purpose PLC CPU. A firmware v3.1 compatibility statement is not applicable based on the available product identification.
Q6: Can I replace it with a VT–527 or VT–537?
Do not assume direct interchangeability. These designations identify different solenoid-current configurations. Check the valve coil rating, amplifier output stage, and complete ordering code before substitution.
Q7: What should be checked before commissioning a replacement?
Verify the material number, valve type, solenoid rating, command input, rack connector wiring, and original amplifier adjustments. Test the hydraulic response under controlled conditions before returning the machine to normal operation.
Procurement note: The BoscVT- is identified as an analog proportional hydraulic valve amplifier. Confirm the exact valve configuration and electrical output requirements before ordering; related VT- models can have different solenoid-current ratings and application settings.
