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NI (National Instruments) PCI-6520 16-Channel, ±30 VDC, 8 Sink/Source Inputs, 8 Relay Outputs (60 V), Isolated Digital I/O Device
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NI (National Instruments) · Computer-Based Device

PCI-6520

The NI PCI-6520 is a PCI isolated digital I/O device with 8 sink/source digital inputs and 8 relay outputs. It provides 60 VDC channel-to-channel isolation.

ManufacturerNI (National Instruments)
ModelPCI-6520
Part Number779443-01
Product Type16-Channel, ±30 VDC, 8 Sink/Source Inputs, 8 Relay Outputs (60 V), Isolated Digital I/O Device
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Bus ConnectorPCI
Digital Input Only Channels8
Digital Output Only Channels8
Digital Input Voltage Range-30 V to 30 V
Output Voltage Range0 V to 60 V
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Overview

Product overview

Key product information and technical features.

The PCI-6520 is a computer-based digital I/O device for a PCI host system. Its 16 channels are divided into 8 dedicated digital inputs and 8 dedicated relay outputs; there are no bidirectional channels. Inputs support -30 V to 30 V, while the listed output voltage range is 0 V to 60 V.

The device includes digital filtering, change detection, programmable power-up states, and digital I/O watchdogs for configurable safe output states. It uses a D-SUB front connection and provides 60 VDC channel-to-channel isolation.

  • 16 dedicated digital I/O channels: 8 sink/source inputs and 8 relay outputs.
  • PCI bus interface for a computer-based measurement or control system.
  • Input voltage range of -30 V to 30 V and output voltage range of 0 V to 60 V.
  • 60 VDC channel-to-channel isolation.
  • Digital filtering and change detection.
  • Programmable power-up states and digital I/O watchdogs.
Verified specifications

Technical data

Verified product specifications.

Bus ConnectorPCI
Number of Digital Input Only Channels8
Number of Digital Output Only Channels8
Digital Input Voltage Range-30 V to 30 V
Output Voltage Range0 V to 60 V
Single-Ended Digital I/O Channel Current Drive2 A
Operating Temperature Range0 °C to 55 °C
Bus ConnectionPCI
Current Flow DirectionSinking Input, Sourcing Input, Sinking Output, Sourcing Output, Relay Output
Digital I/O Isolation60 VDC Ch-Ch Isolation
Digital I/O Logic Levels24 V
Front Connection TypeD-SUB
Signaling TypeSingle-Ended
Supported Hardware PlatformComputer-Based Device
NI part numbers779443-01
Condition & included items

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NI

Manufacturer

Computer-Based Device

Supported Hardware Platform

PCI-6520

This product

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Manuals & software

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Getting Started (NI)Getting Started · ni.com
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Letter Of Volatility (NI)Letter Of Volatility · ni.com
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Specifications (NI)Specifications · ni.com
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Dimensional Drawings (NI)Dimensional Drawings · ni.com
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Product Page (NI)Product Page · ni.com
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Shipping, warranty & returns

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FAQ

Product-specific questions

Product-specific answers based on available technical information.

What interface does the NI PCI-6520 use?

The PCI-6520 uses a PCI bus connection.

How many input and output channels does the PCI-6520 provide?

It provides 8 dedicated sink/source digital inputs and 8 dedicated relay outputs, for 16 channels total. It has no bidirectional digital channels.

What are the PCI-6520 input and output voltage ranges?

The digital input voltage range is -30 V to 30 V, and the listed output voltage range is 0 V to 60 V. Consult the NI specifications for detailed operating limits before connecting field wiring.

Does the PCI-6520 provide isolation?

Yes. The device is specified with 60 VDC channel-to-channel isolation.

Which digital control features are included?

The PCI-6520 includes digital filtering, change detection, programmable power-up states, and digital I/O watchdogs.

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