Bosch Rexroth VT-HNC100-1-23/W-08-P-0 Digital Axis Controller

Description

Product Profile: Bosch Rexroth VT-HNC100-1-23/W-08-P-0 Digital Axis Controller

Title Description

Bosch Rexroth VT-HNC100-1-23/W-08-P-0 – Programmable Digital NC Controller for High-Precision Hydraulic Axes with PROFIBUS DP Interface

VT-HNC100-1-23/W-08-P-0

Executive Summary

The VT-HNC100-1-23/W-08-P-0 is a high-performance single-axis digital NC controller manufactured by Bosch Rexroth (formerly Indramat/Mannesmann Rexroth) for precise closed-loop control of electro-hydraulic axes. As part of the VT-HNC100 product family, it is designed to execute complex motion control sequences including positioning, velocity control, pressure/force regulation, and multi-axis synchronization in demanding industrial environments. This controller features a robust 16/32-bit processor, extensive I/O capabilities, and integrated fieldbus communication (PROFIBUS DP), making it ideal for applications requiring precise hydraulic motion control such as injection molding machines, hydraulic presses, metal-forming machinery, and test stands. The specific variant “1-23/W-08-P-0” denotes a particular configuration with integrated options and interfaces optimized for industrial automation systems.

Core Technical Specifications

Key Features and Advantages

High-Precision Motion Control

• Closed-Loop Control Architecture: The VT- executes precise closed-loop control of hydraulic axes using feedback from incremental encoders, SSI absolute encoders, or analog sensors (LVDT, 0–±10 V, 4–20 mA). This ensures exceptional accuracy and repeatability in positioning, velocity, and force/pressure control.
• Advanced Control Algorithms: Implements sophisticated PID control with feed-forward, electronic gearing, camming, and position-dependent braking functions for complex motion profiles.
• Multi-Axis Synchronization: Supports synchronization of up to 4 axes via local CAN bus communication, enabling coordinated motion in multi-axis systems.

Flexible I/O and Interface Capabilities

• Comprehensive Feedback Options: Accepts multiple feedback types including incremental encoders (TTL/HTL up to 1 MHz), SSI absolute encoders, and analog sensors, providing flexibility to interface with various hydraulic position transducers.
• Configurable Digital I/O: Features 8 programmable digital inputs and outputs (24 V DC) for limit switches, reference switches, valves, and other field devices, enabling custom logic and interlocking.
• Integrated Fieldbus Communication: Equipped with PROFIBUS DP interface (up to 12 Mbps) for seamless integration into higher-level PLC or DCS systems, enabling distributed control and parameterization.

Robust Industrial Design

• Durable Construction: Designed for continuous operation in harsh industrial environments with a robust metal housing, wide operating temperature range (0–50 °C), and high immunity to electrical noise and vibration.
• Hot-Plug Capability: Supports hot-plugging for 19″ rack integration, allowing module replacement without powering down the entire system in certain configurations.
• Integrated Diagnostics: Built-in diagnostic and monitoring functions provide real-time status information, fault detection, and troubleshooting capabilities to maximize uptime.

Programming and Commissioning

• NC Programming Language: Uses a powerful PC-based NC language supporting subroutines, jumps, conditional logic, and complex motion sequences for flexible application programming.
• Commissioning Software: Parameterized and programmed via Bosch Rexroth’s WIN-PED® 6/7 software or IndraWorks engineering tools, providing intuitive configuration and tuning capabilities.
• RS-232 Serial Port: Enables direct connection to a PC for programming, parameterization, and diagnostics without requiring fieldbus connection.

VT-HNC100-1-23/W-08-P-0

Detailed Applications:

• Plastics Processing: Control of injection molding units for precise positioning of screws, ejector pins, and mold movements with pressure/force regulation for consistent product quality.
• Metalworking: Precision control of hydraulic press slides, deep drawing machines, and metal forming equipment requiring accurate positioning and force control.
• Automated Testing: Test stands for component fatigue testing, material testing machines, and hydraulic actuators requiring programmable motion profiles and data acquisition synchronization.
• General Automation: Special machine construction, transfer lines, and rail-bound vehicles requiring closed-loop hydraulic control with integration into supervisory control systems.

Brand-Related Model Recommendations

The VT- series includes several variants tailored for different applications. Below are related models within the Bosch Rexroth product family:

Frequently Asked Questions (FAQ)

1. What is the difference betwe VT-/W-08-P-0 and the newer VT–2X series?

e VT-/W-08-P-0 belongs to the legacy Series 1X family, while theC100-2X represents the current generation with several enhancements:

• Processing Power: The 2X series features improved processors for faster cycle times and more complex motion profiles.
• Communication: Expanded fieldbus support including EtherCAT and SERCOS interface in addition to PROFIBUS DP and CANopen.
• Diagnostics: Enhanced diagnostic capabilities with more detailed error reporting and predictive maintenance functions.
• Product Lifecycle: The 2X series is currently supported by Bosch Rexroth with active development and longer availability, while the 1X series is typically supplied as legacy or refurbished parts.

2. e VT-/W-08-P-0 control multiple axes simultaneously?

The sd VT-/W-08-P-0 is designed for single-axis control. However, multiple controllers can be networked together via the local CAN bus to synchronize up to 4 axes for coordinated motion applications. For applications requiring more than 4 axes, a higher-level motion controller or PLC would typically be used in conjunction with multiple VT- units.

3. What programming software is required to confige VT-/W-08-P-0?

e VT-/W-08-P-0 is programmed using Bosch Rexroth’s WIN-PED® 6/7 commissioning software or the newer IndraWorks engineering environment. These tools provide:

• NC programming language editor for motion sequences
• Parameterization screens for controller tuning
• Diagnostic and monitoring functions
• Online monitoring and troubleshooting capabilities

4.e VT-/W-08-P-0 suitable for use in safety-critical applications?

e VT-/W-08-P-0 is not inherently safety-rated to standards such as IEC 61508 or ISO 13849-1 for use in safety-critical functions. It is designed as a standard motion controller. For safety-related applications, it must be used in conjunction with external safety relays, safety PLCs, or dedicated safety monitoring systems that meet the required performance levels (PL) or safety integrity levels (SIL). Always consult Bosch Rexroth’s application guidelines and relevant safety standards when implementing safety functions.

5. How do I troubleshoot communication issues with the PROFIBUS DP interface?

For PROFIBUS DP communication problems, follow these steps:

1. Verify Hardware Connections: Check that the PROFIBUS cable is properly connected to the X4 terminal and that the termination switches are correctly set at both ends of the network.
2. Check Baud Rate Settings: Ensure that the baud rate setting (typically 1.5 Mbps, 3 Mbps, 6 Mbps, or 12 Mbps) matches the master device configuration.
3. Monitor Bus Status: Use the commissioning software to monitor the bus status indicators and check for error messages related to communication timeouts or bus failures.
4. Verify GSI File: Ensure that the correct GSD (Generic Station Description) file is loaded into the master device e VT-/W-08-P-0.
5. Check Addressing: Confirm that the PROFIBUS node address set on the VT- does not conflict with other devices on the network.

For detailed troubleshooting procedures, refer to the operating instructions manual (RE 30139-B/12.14) or consult Bosch Rexroth technical support