The Abaco Systems / VMIC VMIVME-2128-301 is a 128-bit high-voltage digital output board for VMEbus systems, delivering software-controlled switching and load management in industrial and embedded control applications. Built-in test (BIT) logic enables per-channel operational verification without external instrumentation. Open-collector drivers sink up to 600 mA continuous current with 990 mA surge capability, making the board suitable for driving lamps, solenoids, stepper motors, and relay coils across voltage classes from 5 V to 48 VDC.
Technical Specifications
• Output Channels: 128 channels, individually addressable
• Output Type: High-voltage open-collector drivers
• Voltage Range: 5 to 48 VDC; 55 V maximum breakdown
• Current Sink: 600 mA continuous per channel
• Surge Current: 990 mA maximum before automatic shutdown
• Data Transfer: 8-bit, 16-bit, and 32-bit modes
• Form Factor: Double Eurocard, 6U height
• Power Draw: 3.0 A typical at +5 VDC (logic supply)
• Operating Temperature: 0 to +55 °C
• VMEbus Compliance: ANSI/IEEE STD 1014-1987, IEC 821 and 297
– Key Features
• Built-in test logic for software-controlled channel diagnostics
• Automatic inrush current shutdown protection
• Thermal shutdown protection on all output drivers
• Output clamp diodes for inductive load transient suppression
• Optional pull-up resistors for electronic switch outputs (5 V to 55 V configurations)
• User-supplied warming resistor sockets for current management
• Flexible addressing within VMEbus I/O space (short and standard supervisory/non-privileged modes)
– Interfaces & Connectors
• Two 96-pin female connectors (P3, P4) support both mass termination (IDC) and discrete wire configurations
• ERNI No. 913 031 IDC mating connectors recommended with 0.033-inch ribbon cable
• Harting No. 09 03 096 3214 discrete wire option with crimp contacts and shell housing
• P2 connector for user-supplied power and ground; VMIACC-0132 power accessory available
– Typical Applications
Digital switching, lamp drivers, solenoid control, stepper motor excitation, relay coil driving, multi-load industrial automation systems, and VME-based embedded control platforms requiring per-channel status verification.
