Abaco Systems / VMIC VMIVME-1128-000 128-Bit High Voltage Digital Input Board

The VMIVME-1128-000 is a 128-bit high-voltage digital input board designed for VMEbus systems operating in demanding industrial and control environments. This Double Eurocard (6U) module interfaces with high-voltage digital signals through high-reliability DIN-type connectors, supporting jumper-selectable voltage sourcing or current sinking configurations. Built-in-test (BIT) logic enables fault detection and isolation without external signal disconnection, while a front-panel fail LED provides immediate fault indication.

Technical Specifications

• Input Channels: 128 high-voltage digital input channels


• Input Voltage Range: 1.25 to 66 VDC with user-selectable input voltage thresholds


• Signal Type: Jumper-selectable voltage source or current sinking inputs


• Data Transfer: 8, 16, or 32-bit modes


• VMEbus Compliance: VMEbus Specification Rev. C.1 (ANSI/IEEE STD 1014-1987, IEC 821 and 297)


• VMEbus Addressing: A24:A16:D32/D16/D08 (EO) slave: 39/3D:29/2D


• Form Factor: Double Eurocard (6U)


• Open Circuit State: Jumper-selectable logic zero or logic one

Key Features

• Built-in-test registers allow host-controlled data write/read verification without disconnecting external signals


• Test mode enables component checking and diagnostics


• Per-group (eight-input) jumper configuration for signal flexibility


• Buffered front I/O reduces loading on source circuits


• Fail LED for real-time fault status indication

Typical Applications Digital signal monitoring in VME-based industrial control systems, process automation, power distribution monitoring, and equipment status acquisition in high-voltage environments.

Compatibility & Integration The VMIVME-1128-000 integrates with Abaco Systems Intelligent I/O Controllers (VME-90xx series) and Universal I/O Controllers (VME-9300 series). Product Status: Restricted Production Phase as of March 22, 2023.