The Acromag/Xembedded/Xycom XVME-212/1 is a VMEbus-compliant digital input module delivering 32 optically isolated channels for industrial signal acquisition. Built on a double-height (233.7 mm × 160.0 mm) card, it eliminates host processor polling through programmable scanner circuitry that detects and reports state changes via VMEbus interrupt generation. Each channel features 300 VDC optical isolation and eight jumper-selectable debounce intervals to accommodate noisy field environments.
Technical Specifications
• Channels: 32 digital inputs
• Isolation: 300 VDC channel-to-channel and channel-to-VMEbus GND
• Input Voltage Range: Logic 1: 10–50 VDC | Logic 0: 0–1 VDC
• Reverse Bias Protection: 50 VDC
• On-board Power Supply: Isolated 12 VDC (factory-connected for 12 V relay and switch monitoring; other 10–50 VDC inputs available with board modification)
• Maximum Input Frequency: 3400 Hz
• Minimum Detectable Pulse Width: Positive: 5–25 µsec typical / 100 µsec maximum | Negative: 150 µsec typical / 600 µsec maximum
• Propagation Delay: Off-to-on: 5–25 µsec typical / 100 µsec maximum | On-to-off: 150 µsec typical / 600 µsec maximum
• Operating Temperature: 0° to 65° C
• Humidity: 20–80% RH, non-condensing
• Shock: 50g peak acceleration, 11 msec duration
• Vibration: 2.5g maximum acceleration, 0.030″ peak-to-peak displacement
• Altitude: Sea level to 10,000 ft.
– Key Features
• Programmable scanner circuitry for change-of-state detection
• VMEbus interrupt capability (IEEE 1014 Rev. C.1 compliant)
• Input debounce filtering with eight selectable intervals
• A24/A16:D16/D08(EO) DTB slave operation
– Typical Applications
Pushbuttons, relay contacts, limit switches, proximity switches, photo-detector switches, pressure switches, alarm trip inputs.
– Compatibility & Integration
Fully compatible with VMEbus systems supporting A24/A16 addressing and D16/D08 data transfers.
