Description

Abaco Systems VMIVME-1128

The VMIVME-1128 from Abaco Systems is a 128-bit high-voltage digital input board that plays a critical role in industrial automation, test & measurement, and other demanding applications. Designed for scenarios requiring processing of large volumes of digital signals, it offers exceptional compatibility and reliability, accurately capturing and transmitting high-voltage digital signals to provide stable, efficient data support for complex industrial processes and precise system control.

Functional Features

Large-scale Digital Input Processing

128 high-voltage digital input channels for simultaneous connection of numerous signal sources, meeting requirements for large-scale data acquisition.
Ideal for monitoring status signals from sensors, switches, and other devices in industrial automation lines, providing comprehensive feedback on system operation.

Flexible Input Configuration

Open-circuit state selectable as logic '0' or logic '1' via jumper settings.
Each group supports jumper-selectable monitoring of voltage sources or current-sinking signals, enhancing compatibility with diverse signal types and electrical environments.

Configurable in 8-input groups via jumpers:

Fault Detection & Isolation

Onboard built-in test logic for efficient fault detection and isolation.
Rapidly identifies issues in input channels or the board itself during operation, minimizing system downtime and streamlining maintenance.

Intuitive Status Indication

Front-panel Fail LED provides immediate visual notification of detected faults, enabling quick response from maintenance personnel and improving overall system maintainability.

Technical Specifications

Category	Specifications
Input Channels	128-bit high-voltage digital inputs
Input Voltage Range	0–66V (user-selectable threshold range: 0.61–34V)
Jumper Configurability	Each 8-input group configurable for logic state (open-circuit = logic 0 or 1) and signal type (voltage source/current sink)
Board Standard	Complies with VMEbus specifications (ANSI/IEEE Std 1014-1987, IEC 821 & 297) Mnemonic: A24:A16:D32/D16/D08(EO):Slave:39/3D:29/2D Form Factor: 6U Eurocard
Interface	High-reliability DIN-type I/O connectors
Built-in Features	Onboard test logic for fault detection and isolation
Status Indication	Front-panel Fail LED

Working Principle

The VMIVME-1128 operates by capturing, processing, and transmitting external digital signals. When accessed by the host system, the board samples inputs from various sources, including electronic switch circuits, standard logic gates, mechanical switch contacts, relay outputs, and Opto 22-style signal conditioners.

Signal Preprocessing

Input signals are conditioned based on jumper settings to determine logic states and signal types (voltage/current).

Data Conversion

Processed signals are converted into VMEbus-compliant data formats and placed on the appropriate data lines.

Transmission to Host

The board acts as a data acquisition hub, providing real-time "snapshots" of external inputs to the host system via the VMEbus, enabling effective monitoring and control of connected devices.