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National Instruments · NI motion control

NI MID-7602

The NI MID-7602 is a two-axis stepper motor power drive used in NI motion-control systems. It provides the drive stage between a motion controller and stepper motors.

ManufacturerNational Instruments

ModelMID-7602

Product TypeTwo-axis stepper motor power drive

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Product typeStepper motor power drive

Axes2

Command signalsStep and direction; active-high polarity

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Overview

Product overview

Key product information and technical features.

The MID-7602 occupies the power-drive position in a stepper motion system rather than serving as the motion controller itself. NI's published connection diagram places the MID-7604/02 drive between an NI PCI/PXI/FW-7344 motion controller and a stepper stage.

Configuration should account for NI's correction to the original user guide: the step and direction signals are active high, not active low. The NI-Motion readme recommends changing the stepper polarity setting in Measurement & Automation Explorer (MAX) accordingly.

Two-axis stepper drive architecture.
Step/direction command interface with active-high signal polarity.
Included in NI's documented controller-to-stepper-stage connection arrangement using the SHC68-C68-S cable.

Verified specifications

Technical data

Verified product specifications.

Drive type	Stepper motor power drive
Number of axes	2 axes
Command interface	Step and direction
Step/direction polarity	Active high, per NI documentation correction

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National Instruments

Manufacturer

NI motion control

Controller and stepper-drive ecosystem

MID-7602

Two-axis stepper power drive between controller and motors

Documented connection

NI PCI/PXI/FW-7344 controller to MID-7604/02 drive using an SHC68-C68-S cable.

Check the NI polarity correction before configuring step/direction signals; the original user guide states the opposite polarity.

Manuals & software

Technical resources

Manuals, software and technical resources for this model.

NI-Motion ReadMe — MID-7604/7602 Polarity ErrataOfficial Software Readme And Documentation Correction · download.ni.com

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National Instruments Recommended Connection to Polytec PI Stepper Motor StagesConnection Diagram · ni.com

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Stepper Motor Wiring to NI Motion ControllerOfficial Support Article · knowledge.ni.com

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MID-7604/7602 Step/Direction Polarity CorrectionTechnical resource

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NI Motion Controller and Stepper-Stage Connection DiagramTechnical resource

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FAQ

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Product-specific answers based on available technical information.

How many axes does the MID-7602 drive?

The MID-7602 is the two-axis stepper drive in the MID-7604/7602 family.

What polarity should be used for step and direction?

NI's documentation correction specifies active-high polarity. NI recommends changing the stepper polarity setting in MAX to active high rather than following the original user guide's active-low statement.

Which controller connection is documented by NI?

NI's Polytec PI stepper-stage connection diagram shows an NI PCI/PXI/FW-7344 motion controller connected to the MID-7604/02 drive through an SHC68-C68-S cable.