GE VMIVME1150 332-001150-120 Digital Input Board

The GE Fanuc VMIVME-1150 332-001150-120 operates as a high-performance VMIVME-1150 64-Channel Optically Isolated Digital Input Board engineered for precise binary state acquisition within VMEbus-based industrial computing architectures. Configured as a high-density, double Eurocard module, this board converts field-tier discrete signals from contact closures, voltage sources, or current sinks into logic-level variables natively at the hardware tier, maintaining data integrity parallel to host CPU execution cycles.

Hardware Specifications

Signal Conditioning & VMEbus Integration

• Optical Isolation and Industrial Noise Immunity The VMIVME-1150 protects sensitive VMEbus backplane logic using individual optocouplers on all 64 channels. This physical boundary isolates field ground loops and blocks high-voltage transients up to the maximum rated isolation threshold, ensuring reliable binary data capture within high-EMI manufacturing, energy, and defense installations.
• Backplane Bus Communication Velocity and Filter Mapping The board maps input states straight into VMEbus memory registers. It features configurable hardware debounce filters to clean up mechanical contact bounce from field switches, allowing the host VMEbus processor to read valid, synchronized state updates inside microsecond task loops without adding software-tier timing delays.

Frequently Asked Questions

Q: What specific hardware behaviors manifest if a field input signal experiences high-frequency electrical chattering?

A: The board’s optional hardware filtering circuit suppresses transient pulses narrower than the pre-configured time constant. If the signal continues chattering outside the filter window, the register toggles rapidly; however, the optical isolation core prevents the electrical noise spikes from bleeding onto the VMEbus power lines.

Q: Can this 0.52 kg digital input board be pulled out of the VME rack while the system power bus is fully energized?

A: No. Standard VME architecture rules state that modules must not be plugged in or removed while the backplane is live. Hot-swapping the card can create brief data line disruptions and power bus arcs that risk damaging the onboard address decoders and adjacent computational nodes.