VMIC VMIVME-2536-200 5V Optically Coupled Digital I/O Board
The VMIC 332-002536-000 B, also known as the VMIVME-2536-200, is a 5V optically coupled digital I/O PCB card designed for VMEbus-based industrial control systems. This card provides a reliable interface between VME controllers and external sensors, actuators, and other digital devices, ensuring electrical isolation and robust performance in noisy industrial environments.
The optical coupling feature provides complete isolation between the VMEbus and the I/O circuits, protecting the system from voltage transients and ground loops commonly encountered in industrial settings.
Key Features
Optical Isolation: Provides complete electrical isolation between VMEbus and I/O circuits for enhanced noise immunity.
Digital I/O Channels: 32 isolated channels configurable as inputs or outputs.
5V Operation: Designed for 5V logic systems, compatible with standard TTL/CMOS levels.
VMEbus Compatibility: Standard VMEbus interface for seamless system integration.
Industrial Grade: Designed for reliable operation in harsh industrial environments.
Diagnostic Features: Built-in diagnostic capabilities for simplified troubleshooting.
Technical Specifications
The VMIVME-2536-200 features 32 optically isolated digital I/O channels, each configurable as either input or output. The optical isolation provides up to 2500V of isolation between the I/O circuits and the VMEbus. Inputs accept a wide voltage range, and outputs provide sufficient current drive for most industrial loads.
The board supports standard VMEbus addressing and interrupt mechanisms, allowing flexible I/O mapping and event-driven processing. It is designed for operation in industrial temperature ranges and includes protection against overvoltage and short circuits.
Applications
Factory Automation: Interfacing with PLCs, sensors, and actuators.
Process Control: Monitoring and control of industrial processes.
Test and Measurement: Digital signal acquisition and generation.
Robotics: Control of end-effectors and peripheral devices.
Installation and Configuration
Installation is straightforward with standard VMEbus connectors. Configuration is performed via onboard switches or software, allowing flexible channel assignment and interrupt settings.
Benefits
Reliability: Optically isolated design ensures reliable operation in noisy environments.
Flexibility: Configurable I/O channels for diverse applications.
Protection: Electrical isolation protects the VME system from external faults.
Compatibility: Standard VMEbus interface for easy integration.
Conclusion
The VMIC VMIVME-2536-200 digital I/O board provides a reliable and flexible solution for interfacing VMEbus systems with industrial digital devices.




