Description
Rexroth VT-HNC100-1-23W-08-C-0 (R900959000) – Electrohydraulic Axis Controller for Precision Servo-Hydraulic Motion
The Rexroth VT-HNC100-1-23W-08-C-0 is a compact electrohydraulic axis controller designed for precise motion control of cylinders and hydraulic actuators. From my experience, the HNC100 series is typically used to close the loop on position, pressure, or force in servo-hydraulic systems with proportional or servo valves. You might notice that it fits well in retrofit projects too—especially where you want modern closed-loop performance without overhauling the entire PLC program.
Company’s Order Placement Process and Guarantees
- Warranty: 365 days
- Delivery: In stock items ship in about 1 week; no more than one month at the latest
- Payment: 50% advance payment; full payment before delivery
- Express options: FedEx, UPS, DHL
Key Features
- Closed-loop control for hydraulics: Position, pressure, or force control with fast loop updates for smooth servo-hydraulic motion.
- Flexible sensor inputs: Typically supports SSI/incremental feedback for position transducers and analog inputs for pressure or force sensors.
- Valve command outputs: Standard ±10 V analog output for proportional/servo valves; in many cases, PWM or current-driven cards can be paired via the rack.
- Fieldbus connectivity: The “C” option on this variant appears to provide CAN/CANopen communications; serial (RS232) service port is commonly used for commissioning.
- Digital I/O on board: The “08” option typically indicates a practical set of digital inputs/outputs to handle enable, limit, or interlock signals.
- Compact rack plug-in format: Slips into a 19-inch subrack, making it straightforward to swap or expand channels in a control cabinet.
- Commissioning tools: Parameter-based setup, tuning aids, and trace functions (via Rexroth engineering software) reduce startup time.
Technical Specifications
| Brand / Model | Rexroth VT-HNC100-1-23W-08-C-0 (Material No. R900959000) |
| HS Code (reference) | 9032.89 – Automatic regulating or controlling instruments (typical classification for motion controllers) |
| Power Requirements | 24 V DC nominal (current draw typically in the sub-amp range depending on I/O load) |
| Operating Temperature | Typically 0 to +50 °C (control cabinet installation) |
| Signal Input / Output Types | Analog inputs (e.g., 0–10 V / 4–20 mA), encoder interfaces such as SSI/incremental, ±10 V analog output for valves; digital I/O for enable/limit |
| Communication Interfaces | CAN/CANopen (C-option), RS232 service/engineering port |
| Installation Method | 19-inch subrack plug-in module (Rexroth VT-series rack); wiring via backplane/terminal modules |
| Form Factor | Compact controller card for control cabinet use |
Application Fields
- Presses and metal forming lines needing accurate cylinder positioning and force control
- Plastic and rubber machinery (injection, blow molding) with servo-hydraulic motion loops
- Test benches and HIL rigs for dynamic motion profiles and precise pressure ramps
- Woodworking, sawmill, and materials handling axes where hydraulic actuators dominate
- Retrofit projects replacing analog card sets with a digital, parameterizable controller
Advantages & Value
- Reliability under load: Built for industrial duty cycles; from my experience, HNC controllers run stably for years when powered and grounded correctly.
- Compatibility: Plays well with common hydraulic valves and transducers, so you typically keep your existing hardware.
- Faster commissioning: Parameter sets, built-in tuning aids, and trace help reduce setup time and risk.
- Cost control: Offloads closed-loop tasks from the PLC, which can simplify your PLC program and I/O hardware selection.
- Serviceability: Plug-in architecture lets maintenance teams swap modules quickly to minimize downtime.
One thing I appreciate is how easily it dropped into a customer’s existing 19-inch rack; they were up and cycling with a clean position loop by the end of day one.
Installation & Maintenance
- Cabinet & mounting: Install in a 19-inch control cabinet with adequate ventilation. Follow EN 60204 grounding and bonding practices. Keep wiring short and shielded where required.
- Power & EMC: Stable 24 VDC supply with proper filtering; common reference for analog signals. Separate power and signal cabling to reduce noise.
- Wiring tips: Use shielded twisted-pair for SSI/incremental encoders and analog transducers. Route valve command lines away from motor cables.
- Safety: Implement hardwired E-stop and valve enable interlocks. Validate travel limits and pressure reliefs during commissioning.
- Routine maintenance: Back up parameter sets after changes, inspect connectors quarterly, keep the cabinet clean, and apply firmware updates when validated by your controls team.
Quality & Certifications
- CE-compliant design for industrial environments
- RoHS-conform components in most configurations
- Manufactured under ISO 9001 quality systems
- UL conformity may vary by build and region
- Manufacturer warranty applies; our supply warranty is 365 days as stated
Compatible & Supporting Components
- Rexroth VT series 19-inch subracks and power supply modules (for HNC cards)
- Rexroth proportional/servo valves with ±10 V command
- SSI or incremental encoders; analog pressure/force transducers (0–10 V / 4–20 mA)
- CAN/CANopen gateway or PLC master where fieldbus integration is required
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