Description
NI PCI-6230 | 8-Channel Isolated Analog Input Card New In Stock
Architect’s Product Breakdown
The National Instruments PCI-6230 operates as a specialized bank-isolated DAQ module within the M-Series family, specifically engineered for industrial monitoring, heavy-machinery testing, and high-noise environments where standard non-isolated cards risk ground loops or hardware damage. By incorporating 60 VDC continuous bank isolation (CAT I) between the field signals and the host computer bus, this hardware model breaks ground loops and protects delicate PC PCI backplanes from severe voltage transients and common-mode noise surges commonly found in industrial processing plants.
Deploying or replacing this model in an industrial rackmount PC requires careful attention to isolated reference grounds and terminal wiring. Driven by the NI-STC2 timing controller and NI-MCal self-calibration system, the board features 8 differential analog inputs alongside isolated digital lines. When carrying out maintenance swaps in active control cabinets, engineers must ensure that field signal commons (AIGND) are tied appropriately within the isolated bank boundaries and that terminal blocks match the 37-pin or 68-pin I/O connector layout configured in NI-DAQmx to maintain full isolation integrity.
PCI-6230
Key Technical Specifications
- Manufacturer: National Instruments (NI)
- Product Category: Bank-Isolated Multifunction Data Acquisition Board
- Part Number / Catalog No.: PCI-6230 (779628-01 / 193798x-01)
- Isolation Rating: 60 VDC continuous bank isolation (1000 Vrms withstand for 5s, CAT I)
- Analog Inputs: 8 Differential channels
- ADC Resolution: 16-bit
- Maximum Sampling Rate: 250 kS/s (single channel or aggregate)
- Input Voltage Ranges: Software-selectable from \pm 0.2 V to \pm 10 V
- Analog Outputs: None (pure acquisition and digital control variant)
- Digital I/O Lines: 6 Isolated Digital Inputs (up to 30V) & 4 Isolated Digital Outputs (sinking/sourcing)
- Counter/Timers: 2 x 32-bit counters (up to 80 MHz clock source)
- Bus Architecture: Standard PCI 32-bit bus interface (5V/3.3V universal keying)
- I/O Connector: Single 37-pin D-Sub connector
- Operating Temperature Range: 0°C to +55°C
- Weight: Approximately 120 g (0.26 lb)
Field Engineer’s Pitfall Guide (Unique Value)
- Hot-Swapping Under Power: Never insert or remove the PCI-6230 card while the host computer is powered on. Standard PCI slots do not support live plugging; unseating edge connectors under power can short live PCI rails and destroy host motherboard chipset lines.
- Exceeding Bank Isolation Thresholds: While the module provides 60 VDC continuous bank isolation between field I/O and the PC backplane, exceeding this continuous working voltage threshold across the isolation barrier can break down internal optical/magnetic isolators, leading to hardware failure.
- Confusing Pinout Configurations (37-Pin D-Sub Interface): Unlike non-isolated M-Series cards that utilize 68-pin VHDCI connectors, this isolated model features a 37-pin D-Sub connector. Forcing 68-pin adapter cables or misidentifying isolated digital ground (DGND) relative to analog isolated ground (AIGND) will disrupt measurement accuracy.
QA & Testing SOP (Transparency)
- Visual & Origin Verification: Units undergo microscopic inspection to confirm clean gold-finger edge connectors, intact isolation barriers, undamaged surface-mount components, and authentic OEM labeling.
- Live Test Bench Environment: Measurement cards are seated in a dedicated industrial PCI test chassis running validated NI-DAQmx driver suites and NI Measurement & Automation Explorer (MAX) to verify self-tests and hardware register response.
- Isolation Barrier & Analog Diagnostics: Technicians inject high common-mode offset voltages across the field terminals to confirm 60 VDC isolation rejection, test analog input conversion linearity (\pm 10 V sweeps), and verify isolated digital input/output switching states.
- Anti-Static Packaging: Post-testing units are sealed inside conductive ESD shielding bags and cushioned with high-density protective foam to prevent electrostatic discharge during transport.
Technical FAQ
Can I hot-swap the PCI-6230 card while the host computer is energized?
No. Standard PCI expansion slots do not support live hot-swapping. Always power down the host computer completely before installing or servicing this board.
What is the primary operational advantage of the PCI-6230 over non-isolated cards like the PCI-6221?
This model features 60 VDC bank isolation, which physically isolates field sensor ground references from the computer’s motherboard ground, preventing destructive ground loops and electrical noise contamination.
What terminal accessories and cables connect to the PCI-6230?
The board uses a 37-pin D-Sub connector and pairs directly with NI cables like the SH37M-37M, connecting to terminal blocks such as the CB-37LP or SCB-37.
What is the standard warranty status for surplus inventory units?
Verified surplus or factory-sealed measurement modules typically carry a 12-month operational warranty covering material and manufacturing defects under standard laboratory or industrial conditions.
