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NI PCI-6514
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NI PCIe-1427
NI PCIe-1427

NI PCI-6514

Product Name:​ PCI-6514 Industrial Digital I/O Board
Product Introduction:​ 32-channel isolated 5 V/TTL digital I/O card with bank isolation and high-current drive for relay and PLC interfacing.
Category:
Description
Technical Specifications:
  • Digital Lines:​ 32 total, configurable 8 per port
  • Isolation:​ 60 VDC working, bank-isolated groups
  • Output Drive:​ 24 mA sink/source per line
  • Input Voltage:​ 5 V TTL/CMOS, up to 30 V tolerant on some lines
  • Connector:​ 68-pin or 100-pin depending on revision
  • Temperature:​ 0 °C to 55 °C
    Functional Features:​ Programmable input filtering, change detection, watchdogs, RTSI trigger to DAQ boards.
    Application Scenarios:​ PLC dry-contact monitoring, solenoid driving, production line state machine I/O, safety interlock readback.
    Working Principle:​ FPGA/ASIC scanned port logic with opto-free galvanic isolation, polled or interrupt-driven state change.
    Installation Requirements:​ PCI 5 V, external supply not needed but flyback diodes for inductive loads.
    Usage Notes:​ Do not connect 24 V directly to 5 V port without level shift; use freewheeling diode on relays.
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