GE VMIVME‑1150

Product Overview

The GE VMIVME‑1150 is a robust industrial‑grade VMEbus input board used for high‑density digital signal acquisition in automation and control systems. Designed originally by GE Fanuc (now VMIC/Abaco Systems), this module delivers reliable digital input performance with excellent electrical isolation and flexible configuration options.

The VMIVME‑1150 is widely adopted in legacy and modern VME systems where accurate and noise‑immune digital input data from field sensors and switches is critical for process control, monitoring, and safety functions.

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Core Technical Specifications

Key Parameters :

• Module Type: VMEbus optically isolated digital input board

• Model: VMIVME‑1150 (e.g., 332‑001150‑120 variant)

• Manufacturer Lineage: GE Fanuc / VMIC / Abaco Systems

• Bus Compatibility: Standard VMEbus (supports D8/D16 transfers)

• Input Channels: 64 optically coupled digital inputs

• Input Voltage Range: 5 V to 48 V DC (selectable)

• Isolation Rating: 1 kV continuous; 7.5 kV pulsed (high dielectric isolation)

• Data Polarity: Positive or negative true logic selectable

• Input Filters: Configurable filtering (e.g., 2 μs, 10 μs, 5 ms options)

• Access Type: Short supervisory or non‑privileged I/O space

• Mounting Form Factor: Double Eurocard compatible with VME chassis

• Power Requirements: Typically +5 V DC ~1.1 A; maximum ~2.2 A

These parameters enable the module to interface reliably with a wide range of digital field devices while ensuring electrical protection and data integrity.

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Principle of Operation

The VMIVME‑1150 functions as a 64‑channel digital input interface for VMEbus systems. Each input is optically isolated, meaning an optocoupler provides electrical separation between the field‑side digital signals and the sensitive VMEbus electronics. This optical isolation protects control systems from electrical noise, voltage transients, and ground loop interference—common issues in industrial environments.

When a connected sensor or switch closes or reports a logic level, the corresponding optocoupler activates and presents a digital logic state to the VMEbus backplane. The board supports filtered input options, allowing selection of different response times to suit specific sensor characteristics.

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Key Features

• High‑density input: 64 isolated channels provide extensive digital input capacity from a single card.

• Flexible signal compatibility: Supports voltage sourcing, current sinking, and contact closure inputs across a broad DC range.

• Optical isolation: Provides robust separation from field noise and protects downstream electronics.

• Configurable polarity and filters: Selectable input polarity and filtering to tailor operation for fast switches or debounced signals.

• VMEbus integration: Works with standard VMEbus data widths (8‑ or 16‑bit transfers) and supports standard VME addressing schemes.

• Dual I/O connectors: Facilitates orderly field wiring and distribution of multiple sensors.

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Typical Applications

The VMIVME‑1150 module is commonly found in critical control and automation environments requiring reliable digital sensing:

• Factory automation and manufacturing process control

• PLC and SCADA system digital input interfacing

• Machine tool monitoring and safety interlocks

• Conveyor and material handling system logic state acquisition

• Power plant control and industrial monitoring systems

• Legacy VMEbus systems in defense, aerospace, and industrial research settings

Its high channel count and isolation make it especially suitable where electrical noise, many sensors, and field wiring complexity are prevalent.

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Installation & Integration Notes

• Install the VMIVME‑1150 in any available VMEbus slot (except slot 1) of a standard backplane.

• Set onboard DIP switches to configure the board address, input polarity, and filtering options.

• Provide a stable +5 V DC supply per specification to ensure reliable operation.

• Route field signal connections through the board’s dual 64‑pin DIN connectors to maintain organized wiring.

• Ensure proper chassis grounding for optimal noise rejection.

Routine visual checks and ensuring clean connector seating help maintain consistent performance over long service intervals.

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Summary

The GE VMIVME‑1150 is a 64‑channel optically isolated digital input module for VMEbus systems that provides reliable, noise‑immune digital signal acquisition for industrial automation and control applications. Its flexible configuration, robust isolation, and standard VME integration make it a trusted choice in environments where accurate digital input data is essential to system performance and safety.