GE Fanuc VMIVME-4120 16-Channel 12-Bit Analog Output Board – VMEbus
The GE Fanuc VMIVME-4120 is a high-density analog output board designed for VMEbus-based industrial control and test systems. This board provides 16 independent analog output channels, each with 12-bit resolution, enabling precise generation of voltage and current signals for a wide range of applications. With output ranges of ±10V and 20mA, the VMIVME-4120 is versatile enough to drive actuators, control valves, simulate sensors, and provide reference signals for servo systems.
Engineered for demanding industrial environments, the VMIVME-4120 features robust output protection, including short-circuit and overvoltage protection on each channel. Its VMEbus interface ensures seamless integration into existing systems, while the high channel density reduces the need for multiple boards in space-constrained applications.
Key Features
16 Analog Output Channels: High-density output for multi-channel control and simulation.
12-Bit Resolution: Provides 4096 discrete output levels for precise signal generation.
Configurable Output Ranges: Supports ±10V and 0-20mA outputs to suit various loads.
VMEbus Compatibility: Standard VME form factor with A24/D16 addressing.
Output Protection: Short-circuit and overvoltage protection on each channel.
Simultaneous Update: All channels can be updated simultaneously for coherent output changes.
Industrial Grade: Designed for extended temperature operation and reliable performance in harsh environments.
Technical Specifications
The VMIVME-4120 provides 16 analog output channels, each with a 12-bit DAC. Output ranges are software-selectable for ±5V, ±10V, 0-5V, 0-10V, and 0-20mA (voltage-to-current conversion). Each channel includes a precision voltage reference and output amplifier capable of driving loads up to 5mA for voltage outputs and up to 20mA for current loop outputs.
The board supports both individual and simultaneous channel updates, with a typical settling time of less than 10 microseconds for full-scale changes. Power is derived from the VME backplane, with additional support for external field power on some variants. The board includes onboard memory for storing output values and configuration settings.
Applications
Servo Control: Generating reference voltages for multi-axis motion control systems.
Process Automation: Driving control valves, VFDs, and actuators in industrial processes.
Signal Simulation: Simulating sensor outputs for test and calibration systems.
Data Acquisition: Providing stimulus signals in test and measurement applications.
Audio and Vibration Testing: Generating multi-channel test signals.
Integration and Configuration
Integrating the VMIVME-4120 into a VME system is straightforward. The board plugs into any standard VME chassis and is configured via software. Onboard registers control output values, range selection, and update modes. The board supports VMEbus interrupts for event-driven output generation.
Software drivers for VxWorks, Linux, and Windows are available, along with comprehensive documentation including register-level programming guides and example code to accelerate application development.
Benefits
High Density: 16 channels in a single VME slot reduces system size and cost.
Precision: 12-bit resolution provides fine control for demanding applications.
Flexibility: Configurable output ranges adapt to diverse loads and signal requirements.
Reliability: Protection features ensure safe operation in industrial environments.
Ease of Integration: Standard VME interface and comprehensive software support simplify system design.
Conclusion
The GE Fanuc VMIVME-4120 16-channel 12-bit analog output board provides a high-density, precise, and flexible solution for multi-channel analog output in VMEbus-based systems. Its robust design, comprehensive protection features, and ease of integration make it an ideal choice for engineers building advanced control, simulation, and test systems.
