Bosch Rexroth VT-HNC100-1-23M-08-P-0 – Single-Axis Electrohydraulic Controller for Precise Position/Pressure Control

The VT-HNC100-1-23M-08-P-0 is part of Bosch Rexroth’s long-proven HNC family, designed to close the loop on hydraulic axes with dependable repeatability. It’s typically used to control cylinder position, speed, and pressure/force on presses, molding machines, and test rigs where stable, real-time control really matters. From my experience, plants often choose the HNC100 for retrofit and maintenance programs because it’s straightforward to set up, tolerant of real-world noise, and compatible with standard industrial signals.

Company’s Order Placement Process and Guarantees

• Warranty: 365 days
• Delivery: 1 week if in stock; 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 position/pressure control – Optimized for electrohydraulic axes that need repeatable accuracy in production environments.
• Single-axis HNC architecture – Simplifies setup and troubleshooting; typically ideal for retrofits and standalone axis upgrades.
• Analog command and feedback – Supports standard industrial signals (0–10 V, ±10 V, 4–20 mA) for command values and transducer inputs in many cases.
• Valve drive output – ±10 V command output for external valve amplifiers or proportional valves with valve electronics.
• Digital I/O – Practical for enable, limit, homing, and status signaling; the “08” variant typically denotes an enhanced DI/DO set.
• Profibus-DP interface (P option) – You might notice the “-P-” in the code; this model typically includes Profibus-DP for line integration and PLC data exchange.
• Service port for parameterization – RS‑232 engineering interface for commissioning, tuning, and diagnostics.
• Robust diagnostics – Status LEDs and parameter readout help technicians pinpoint wiring or tuning issues quickly.

Technical Specifications

Application Fields

This controller is commonly used on:

• Hydraulic presses and metal forming lines needing pressure/force control with precise position transitions
• Injection and die-casting machines where closed-loop position and pack/hold pressure matter
• Test benches and servo-hydraulic cylinders requiring stable low-speed control and accurate setpoint tracking
• Cut-to-length, roll gap adjustment, and linear positioning tasks in steel and paper machinery

Advantages & Value

• Reliability over time – These units are known for predictable behavior under hydraulic load changes, which reduces unplanned downtime.
• Compatibility – Works with common industrial signals and external valve amplifiers; easy tie‑in to existing PLCs via Profibus‑DP where equipped.
• Faster commissioning – RS‑232 setup and practical diagnostics mean quicker tuning during maintenance windows.
• Lifecycle economy – Stable closed‑loop control often cuts scrap rates and reduces rework, which, in many cases, pays back the controller cost quickly.
• Serviceability – Swap‑and‑tune workflow is straightforward; parameter backups help after card replacement.

Installation & Maintenance

• Panel/cabinet – Mount in a 3U 19″ subrack with good airflow. Keep ambient 0…50 °C and avoid vibration where possible.
• Power & grounding – Use a regulated 24 VDC supply with proper protective earth. Shield and ground sensor lines at one end to limit noise.
• Wiring – Route valve command and transducer cables away from motor leads. Use twisted, shielded pairs for analog I/O.
• Commissioning – Connect RS‑232 for parameterization; verify sensor scaling and run step tests to finalize PID values.
• Routine care – Periodically back up parameters, check terminal tightness, clean dust, and review any available firmware/service notes.
• Safety – Include safe stops and pressure relief in the hydraulic circuit. Confirm interlocks and limit sensors before automatic mode.

Quality & Certifications

• CE conformity; manufactured under ISO 9001 quality systems
• RoHS-compliant design in most cases for electronic modules of this class
• Manufacturer’s warranty: typically 12 months; this offer includes a 365-day warranty

Supporting Components (for smoother commissioning)

• Rexroth VT series 3U subrack/card holder with DIN 41612 backplane (for HNC plug‑in mounting)
• External proportional valve amplifier (±10 V input) if the valve lacks integrated electronics
• Industrial pressure transducer (4–20 mA) and linear position sensor with analog output, matched to stroke and pressure range
• Shielded cables and RS‑232 service cable for parameterization

You might notice that this model code includes “-P-”, which appears to indicate the Profibus‑DP option. If your line uses a different fieldbus, we can cross-check nearby HNC100 variants for a closer fit. A maintenance customer recently swapped this unit into a press retrofit and reported quicker pressure settling during the dwell phase—no recipe changes needed, just careful PID touch‑up.