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National Instruments · PXI

PXI-2567

The NI PXI-2567 is a 64-channel external relay driver for controlling relay coils using internal or external drive power. It supports hardware triggering and scanning for automated switching systems.

ManufacturerNational Instruments

ModelPXI-2567

Part Number778572-67

Product Type64-channel external relay driver module

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Channels64, arranged in eight banks of eight

External drive voltage50 V DC maximum

Drive current600 mA maximum per channel; 25 A maximum per module

Internal drive power5 V at 1.25 A; 12 V at 0.5 A

I/O connector78-pin D-SUB

Module format3U, single-slot PXI/cPCI module

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Overview

Product overview

Key product information and technical features.

The PXI-2567 provides drive channels for external relays rather than an integrated relay-contact switching topology. NI identifies it for custom switching arrangements and systems that locate switching close to the device under test.

Internal power supports lower-power coil requirements, while an external supply enables operation within the module's 50 V DC, 600 mA-per-channel and 25 A-total limits. NI-SWITCH provides an IVI-compliant software interface for controlling the module.

64 independent external relay-drive channels.
Supports internal or external drive-power sources.
Overcurrent, overvoltage and flyback protection for inductive loads.
Hardware-triggered scanning with scan lists of up to 32,000 connections.
Can drive small DC motors and other inductive relay coils within its electrical limits.

Verified specifications

Technical data

Verified product specifications.

Channel count	64 channels
Topology	Independent
Maximum external drive voltage	50 V DC
Maximum drive current per channel	600 mA
Maximum drive current per module	25 A
Internal drive power	5 V at 1.25 A; 12 V at 0.5 A
Single-channel operate time	60, typical at 25 °C; measured to 90% activation of a 500 Ω resistor µs
I/O connector	78-pin D-SUB
Form factor	3U, one slot, PXI/cPCI
Operating temperature	0 to 55 °C

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Compatibility

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National Instruments

Manufacturer

PXI

Modular instrumentation platform

PXI-2567

External relay-drive module

Control software

NI-SWITCH, with IVI-compliant control

Observe both per-channel and total current limits, verify coil power requirements, and do not connect reserved connector pins.

Manuals & software

Technical resources

Manuals, software and technical resources for this model.

NI PXI-2567 Product PageProduct Page · ni.com

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PXI-2567 SpecificationsSpecifications · ni.com

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PXI-2567 User ManualUser Manual · ni.com

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How to Connect Signals to the PXI-2567Technical resource

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Driving External Relays with NI XX67 Switch SeriesTechnical resource

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FAQ

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Product-specific answers based on available technical information.

Does the PXI-2567 require an external power supply?

Not for every application. Internal drive power provides 5 V at up to 1.25 A and 12 V at up to 0.5 A. An external supply can be used for other coil requirements within the 50 V DC, 600 mA-per-channel and 25 A-module limits.

What does the 600 mA rating describe?

It is the maximum drive current for each channel, not a rating for the contacts of an external relay. The total module drive current must also remain within 25 A.

How are external relays connected?

External wiring uses the module's 78-pin D-SUB connector. Follow NI's pinout and signal-connection guidance, including its instruction not to connect reserved pins.

Which driver controls the PXI-2567?

NI documents NI-SWITCH support for the PXI-2567, with earliest supported driver version 2.5.0. Check the chosen driver release for operating-system and development-environment support.