Abaco Systems / VMIC VMIVME-2120-182 64-Bit High-Voltage Digital Output

The Abaco Systems / VMIC VMIVME-2120-182 is a 64-channel high-voltage digital output VME card engineered for industrial control and automation. This double-height Eurocard delivers open collector drivers capable of sourcing loads across 5 VDC to 48 VDC with 600 mA sink current per channel and 55 V breakdown voltage. The board supports 8-, 16-, or 32-bit data transfers and includes integrated output clamp diodes for inductive load protection. Optional surge current shutdown and thermal shutdown protection safeguard against transient events and overtemperature conditions when driving incandescent or inductive loads.

Technical Specifications

• Output Channels: 64
• Output Driver Architecture: Open collector
• Output Voltage Range: 5 VDC to 48 VDC
• Maximum Breakdown Voltage: 55 V
• Sink Current per Channel: 600 mA
• Data Transfer Modes: 8-, 16-, or 32-bit
• Form Factor: Double-height Eurocard
• VMEbus Compliance: VMEbus specification compatible
• I/O Connectors: High-reliability DIN-type

– Key Features

• Integrated output clamp diodes for inductive flyback protection
• Optional automatic surge current shutdown for transient suppression
• Optional thermal shutdown protection for continuous operation margin
• Built-in-Test (BIT) logic with software-controlled per-channel verification
• Off-line and real-time fault detection capabilities
• Front-panel Fail LED for diagnostic indication
• Separately addressable eight ports on 8-, 16-, or 32-bit boundaries
• Independent Control and Status Register (CSR) address selection
• Jumper-selectable address modifier codes for short supervisory or short nonprivileged I/O access
• Dedicated CSR decoder for grouped hardware control addressing

– Typical Applications

Industrial process control, automated test systems, motor and solenoid switching, relay driver circuits, and incandescent lamp control in harsh electromagnetic environments.

– Compatibility & Integration

Fully compatible with intelligent I/O controllers. Addressed within short supervisory or short nonprivileged I/O memory maps. Dual board select switches enable efficient mapping of CSR and I/O addresses into separate contiguous memory regions.