VT-HNC100 Bosch Rexroth Indramat
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MPN: R900578400
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The Bosch Rexroth Indramat VT-HNC100 is a digital axis controller from the VT-HNC Digital Axis Controllers series. It features four voltage input channels and four current input channels, each with high-resolution input and resistance values. The controller operates with a 16/32-bit MC68376 processor and has 1 MB of flash memory, 256 KB RAM, and an 8 KB EEPROM.
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Product Description:
The VT-HNC100 is a digital axis controller produced by Bosch Rexroth Indramat within the VT-HNC Digital Axis Controllers series. It provides closed-loop numeric control for hydraulic or electric axes, translating analog position and pressure feedback into deterministic motion commands. This arrangement allows one unit to regulate axis behavior while also managing machine responses during coordinated motion. By integrating drive regulation, machine sequencing, and parameter storage in a single housing, the unit serves as the central automation element for presses, injection-molding machines, and other multi-axis systems that require coordinated movement and high repeatability.
Signal acquisition begins with four current input channels that present a 100 Ω ±0.2% load and four voltage input channels that offer a 200 kΩ ±2% impedance for noise-resistant sensing. Real-time processing is handled by a 16/32-bit MC68376 microcontroller connected to 1 MB of flash memory, while application variables execute from 256 KB of fast RAM. Incremental encoders can be evaluated up to 250 kHz, allowing precise capture of high-speed axis positions. During operation, the controller draws only 8 W, which simplifies cabinet thermal management. Nonvolatile 8 KB EEPROM stores machine-specific parameters, and setup and diagnostics are carried out through an RS232 port running at 9.6 kBaud.
Each of the four voltage output channels delivers commands with a granularity of 1.25 mV, and they are referenced to a stabilized output of ±10 V ±25 mV to ensure predictable drive scaling. Current sensing benefits from a resolution of 5 µA, while voltage feedback is digitized at 5 mV, enabling tight closed-loop gains without external amplification at the controller interface. Flash, RAM, and EEPROM are mirrored in a battery-backed memory map so parameter sets survive power interruptions. This combination of analog precision, encoder bandwidth, and onboard computing resources supports multi-axis hydraulic positioning without requiring an external PLC for routine control tasks.
Frequently Asked Questions about VT-HNC100:
Q: How many current input channels are available on the VT-HNC100 controller?
A: The VT-HNC100 digital axis controller provides four current input channels for precise signal measurement.
Q: What is the current input resolution of the VT-HNC100?
A: This controller features a current input resolution of 5 μA, allowing for finely detailed current signal processing.
Q: What is the voltage output resolution on the VT-HNC100?
A: The VT-HNC100 offers an output resolution of 1.25 mV for voltage signals, enabling precise output control.
Q: What type of processor is included in the VT-HNC100?
A: It uses a 16/32-bit MC68376 processor for axis control tasks.
Q: What is the maximum encoder frequency supported by the VT-HNC100?
A: The VT-HNC100 supports a maximum encoder frequency of 250 kHz for feedback applications.