Description
- Model: VT-HNC100-1-22/W-08-0-0
- Brand: Bosch Rexroth
- Part Type: Programmable digital axis control / hydraulic numerical controller
- Axis Configuration: 1 hydraulic axis
- I/O: 8 digital inputs and 8 digital outputs
- Supply: 18–36 VDC
- Weight: Approximately 1.0 kg
Technical Introduction
A failed hydraulic motion controller can leave the valve, actuator, and feedback hardware intact while taking the entire closed-loop axis out of service.
The Bosch Rexroth VT-HNC100-1-22/W-08-0-0 belongs to the VT-HNC100 digital axis controller family and is configured for one hydraulic axis. The controller is intended for programmable closed-loop control of hydraulic drives and provides analog and digital I/O for interfacing with valves, sensors, and machine control hardware. Published specifications identify an MC68376 processor, 18–36 VDC supply, 8 digital inputs, 8 digital outputs, analog I/O, RS232, and support for optional fieldbus interfaces depending on configuration. The exact -1-22/W-08-0-0 variant should be matched before replacement because HNC100 units are available in different axis, I/O, and communications configurations.
Best Suited For
- Hydraulic press and machine-tool maintenance
- Replacement of failed VT-HNC100 controllers
- Legacy Rexroth closed-loop hydraulic systems
Core Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Bosch Rexroth / Rexroth Indramat |
| Model | VT-HNC100-1-22/W-08-0-0 |
| Product Type | Digital Axis Controller / Hydraulic Numerical Controller |
| Variant | 1 hydraulic axis |
| Component Series | 22 |
| Installation | Wall-mount housing |
| Digital Inputs | 8 |
| Digital Outputs | 8 |
| Supply Voltage | 18–36 VDC |
| Power Consumption | Approximately 8 W |
| CPU | MC68376, 16/32-bit |
| Flash Memory | 1 MB |
| EEPROM | 8 KB |
| RAM | 256 KB |
| Current Inputs | 4–20 mA |
| Current Outputs | 4–20 mA, max. ±23 mA |
| Voltage Inputs | ±10 V, ±15 V maximum |
| Voltage Outputs | ±10 V, ±10.7 V maximum |
| Position Feedback | Incremental TTL, up to 250 kHz |
| RS232 | 9.6 kBaud |
| Optional Interfaces | PROFIBUS DP, CANopen, INTERBUS-S |
| Operating Temperature | 0 to +50 °C |
| Storage Temperature | -20 to +70 °C |
| Dimensions | Approximately 71 × 155 × 204 mm |
| Weight | Approximately 1.0 kg |
REXROTH VT-HNC100-1-22/W-08-0-0
The published VT- specifications support the 1-axis configuration, 18–36 VDC supply, MC68376 processor, analog I/O, digital I/O, memory configuration, TTL position feedback, environmental ratings, and approximately 1 kg weight. Optional bus interfaces depend on the particular hardware configuration.
Please refer to the OEM datasheet for complete electrical ratings, hydraulic control functions, firmware compatibility, terminal assignments, fieldbus options, and environmental tolerances.
Field Engineer’s Tech Notes
- Back up the existing machine configuration before replacing the controller. The is a programmable controller, so hardware replacement alone does not guarantee that the machine will retain its original axis parameters, control program, or calibration data. Compare the replacement hardware version and configuration with the failed unit before commissioning.
- Match the feedback device and valve interface. The documented supports incremental TTL position transducers up to 250 kHz and provides analog control interfaces. Verify the actual feedback sensor, valve command signal, scaling, wiring, and I/O assignments against the machine schematic before reconnecting the controller.
Adaptive QA & Testing Protocol
For a VT–1-22/W-08-0-0, incoming inspection starts with verification of the complete model designation and physical condition. The controller is checked for damaged terminals, connector deformation, enclosure damage, contamination, corrosion, and signs of overheating.
Where a compatible test setup is available, testing is tailored to the architecture:
- Verify DC supply operation within the specified 18–36 VDC range.
- Check controller startup and status indication.
- Verify digital input and output operation.
- Simulate appropriate analog input signals.
- Check analog output response under controlled conditions.
- Verify RS232 communication where applicable.
- Test incremental TTL position-feedback input where the required simulator is available.
- Verify optional PROFIBUS DP, CANopen, or INTERBUS-S hardware only when that interface is actually fitted to the unit.
A complete machine-axis commissioning test should be performed on the installed hydraulic system after configuration and safety checks.
Inspection photographs, test reports, and available test videos can be provided upon request.
REXROTH VT-HNC100-1-22/W-08-0-0
Buyer’s FAQ
What does VT–1-22/W-08-0-0 control?
It is a programmable digital axis controller for hydraulic drives, with this specific variant configured for one hydraulic axis and eight digital inputs/outputs.
Is this a direct replacement for another VT-?
Not necessarily. variants differ by axis configuration, hardware series, I/O arrangement, housing, and communications options. Match the complete part number, especially -1-22/W-08-0-0, before ordering.
Is the controller available new or refurbished?
Availability depends on current inventory. New surplus, new old stock, and refurbished units may be available. Confirm the exact condition, firmware/configuration status, test coverage, warranty, and lead time before purchase.
Can the controller be tested before shipment?
Yes. Where suitable Rexroth test equipment is available, the controller can be checked for power-up, I/O operation, analog signals, communication interfaces, and applicable position-feedback functions. Test documentation can be supplied with the unit upon request.
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