The National Instruments PCI-6521 is an industrial digital I/O board with eight 150 VAC/VDC relay outputs with maximum switching power of 60 W, and eight ±30 VDC digital inputs with 60 V channel-to-channel isolation and industry-standard 24 V logic levels. The digital inputs accept both sinking and sourcing signals. The NI PCI-6521 is a UL listed device with 60 V continuous and 620 Vrms withstand (5 seconds) channel-to-channel isolation. For added safety the PCI-6521 provides insulated covers on both sides of the board and requires a keyed connector. For added reliability, the PCI-6521 features watchdog timers to recover from a variety of computer and application faults. It also features programmable power-up states, digital filtering, and change detection for optimal control over your application. The PCI-6521 offers a keyed 37-pin D-Sub connector for connecting to NI low-cost high-voltage accessories. PCI-6521 takes advantage of NI-DAQmx driver software, which helps you achieve shorter setup times and increased productivity.
National Instruments designs and manufactures all products to minimize failures, however unexpected failures can still occur. Extended warranties provide a fixed economical price at the time of system purchase, covering any repair costs for up to three years. In addition, they offer the following benefits:
Significant cost savings compared to individual repair incidents
Fault location, diagnostics, and repair by NI any time the system product fails
All parts and labor costs covered as well as any adjustments needed to restore the hardware to manufacturing specifications
NI recognizes the need to maintain properly calibrated devices for high-accuracy measurements. NI provides manual calibration procedures, services to recalibrate your products, and automated calibration software to calibrate many NI measurement products.
Return your registered product under warranty at no additional labor and parts cost. NI offers fault location, diagnostics, and repair any time the system fails as well as any adjustments needed to restore the hardware to manufacturing specifications.
Data Sheet
