The Abaco Systems / VMIC VMIVME-2170A-110 is a 32-bit optically isolated digital output board for VMEbus systems. It delivers 32 independent optically coupled outputs with selectable current drive and configurable data polarity, providing high noise immunity and field-to-VMEbus isolation in demanding industrial control applications.
Technical Specifications
• Output Channels: 32 optically isolated digital outputs
• Data Transfer Support: 8-bit and 16-bit transfers on VMEbus
• Addressing: Four 8-bit ports or two 16-bit registers; any 32-bit boundary within short supervisory or short non-privileged I/O space
• Address Selection: 14 on-board DIP switches
• Output Current Options: 2.5 mA or 300 mA (field-configurable)
• Output Voltage Tolerance: Up to 30 V
• Isolation Performance:
– 1 kV sustained field-to-VMEbus
– 6 kV pulsed field-to-VMEbus (one second duration)
– 500 V maximum sustained channel-to-channel
• Output Configuration: Open collector style with source/sink capability (low current); field-configurable pull-up resistors; external pull-up voltage option for maximum isolation
• Data Polarity: Positive True or Negative True selectable
• Form Factor: Double Eurocard (9.2 in. / 233.4 mm height)
• Connector: 64-pin DIN front panel
• VMEbus Access: User-selectable supervisory or non-privileged short I/O via jumper; factory configured for short supervisory I/O
– Key Features
• High isolation maintains signal integrity in electrically noisy environments
• Dual current output options accommodate diverse load requirements
• Flexible addressing within standard I/O memory space
• Open collector outputs enable direct integration with diverse control systems
• Externally supplied pull-up voltage maximizes isolation performance
– Typical Applications
• Industrial process control and monitoring
• Equipment shutdown and safety control circuits
• Relay and solenoid driver interfaces
• High-noise factory automation environments
– Compatibility & Integration
Fully compliant with VMEbus mechanical and electrical standards. Operates in any VMEbus slot except slot 1. Supports both supervisory and non-privileged access modes within the short I/O address space.
