NI PCI-6512 Low-Cost Industrial Digital I/O Module

The NI PCI-6512 is a low-cost industrial digital I/O module delivering 64 optically isolated digital output channels for reliable control in machine automation, process control, and industrial data acquisition systems. Bank-isolated architecture protects each group of eight outputs from cross-talk and ground faults, while programmable power-up states and digital I/O watchdogs ensure safe operation during computer or application failures. Programmable input filters eliminate glitches and provide debouncing for switch and relay signals.

– Technical Specifications

Digital Output
• 64 channels, source outputs, unidirectional
• Voltage range: ±30 VDC
• Output current: 75 mA per channel (all lines in bank at 100% duty cycle) or 350 mA per channel (single output line in bank at 100% duty cycle)
• Bank isolation: Eight channels per bank with optical isolation from other banks and computer power supply
• Programmable power-up states for safe initialization
• Configurable watchdog with safe output state during fault conditions

Digital Input
• Software-selectable digital filter for glitch elimination and debouncing

Power
• +5 VDC at 250 mA
• +3.3 VDC at 300 mA

Physical
• Dimensions: 8.38 × 5.12 inches
• Weight: 4.8 oz
• Operating temperature: 0 °C to 55 °C
• Storage temperature: –20 °C to 70 °C

– Key Features

• 64 optically isolated digital outputs in eight-channel banks
• ±30 VDC output capability per channel
• Scalable current drive: 75 mA or 350 mA depending on bank loading
• Watchdog timer for fault-safe operation
• Programmable input filtering with debounce

– Typical Applications

• Machine control and automation
• Process automation and monitoring
• Industrial data logging
• Actuator control with fault protection

– Compatibility & Integration

The PCI-6512 integrates with NI-DAQmx driver software and supports LabVIEW, ANSI C, Microsoft Visual C++, and .NET environments (C# and Visual Basic .NET). Connects via 100-pin high-density SCSI connector. Compatible with PCI and PXI/CompactPCI systems. Operates on Windows Vista x64/x86 and Windows XP.