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National Instruments PXI-6528 Isolated digital input/output module
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National Instruments · PXI

PXI-6528

The National Instruments PXI-6528 is an industrial PXI digital I/O module with 24 channel-isolated inputs and 24 channel-isolated solid-state relay outputs.

ManufacturerNational Instruments
ModelPXI-6528
Part Number778543-01
Product TypeIsolated digital input/output module
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30-Day Warrantystandard coverage
30-Day Returnspolicy applies
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Channel configuration24 inputs and 24 outputs
IsolationChannel-to-channel
Input voltage range−60 to +60 VDC
Front connector100-pin keyed female SCSI
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Overview

Product overview

Key product information and technical features.

The PXI-6528 provides parallel digital I/O for industrial systems. Its sink/source inputs and outputs support monitoring and control, while programmable output states help define behavior during startup and application faults.

  • Programmable power-up output states.
  • Digital watchdogs with configurable fault-state outputs.
  • Software-selectable input filtering for glitch rejection and switch debouncing.
Verified specifications

Technical data

Verified product specifications.

Digital input channels24 channels
Digital output channels24 channels
Output relay typeNormally open Form A solid-state relays
Input voltage range−60 to +60 VDC
Maximum DC switching voltage60 VDC
Maximum AC switching voltage30 Vrms (42 V peak)
Maximum output switching current150; observe thermal and cooling requirements mA
Maximum relay on-resistance18 Ω
Maximum relay set/reset time5.0 each ms
Operating temperature0 to 55 °C
Condition & included items

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Condition

Confirmed per unit.

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Compatibility

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National Instruments

Manufacturer

PXI

Hardware platform

PXI-6528

Isolated digital I/O module

Compatibility

The user guide lists the SH100-100-F shielded cable and SCB-100 connector block for NI 6528/6529 devices.

Check slot suitability and cable pinout before integration. Connector +5 V and GND pins are not isolated.
Manuals & software

Technical resources

Manuals, software and technical resources for this model.

PXI-6528 Official Product PageProduct Page · ni.com
Open →
NI 6528/6529 User Guide and SpecificationsUser Guide And Specifications · docs-be.ni.com
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NI Digital I/O Cable and Accessory Compatibility Guide: 650x/651x/652xTechnical resource
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Shipping, warranty & returns

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Shipping
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Warranty
30-Day Warranty. Standard coverage applies.
Returns
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FAQ

Product-specific questions

Product-specific answers based on available technical information.

Does the PXI-6528 have 48 digital inputs?

No. Its 48 channels comprise 24 inputs and 24 outputs.

Can the output channels source or sink current?

Yes. The solid-state relay outputs act as bidirectional switches; wiring determines sourcing or sinking operation.

Which features help manage startup and fault conditions?

Programmable power-up states define initial outputs, and digital watchdogs can apply configured output states after a computer or application fault.

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