USER MANUAL
NI ISM-7401/7402
Integrated Stepper
This manual describes the NI ISM-7401 and the NI ISM-7402 integrated steppers. It describes
electrical and mechanical characteristics of the devices, as well as I/O functionality.
Contents
Getting Started.......................................................................................................................... 2
Mounting the NI ISM-7401/7402............................................................................................. 3
Connecting the Power Supply .................................................................................................. 4
Choosing a Power Supply......................................................................................................... 4
Voltage.............................................................................................................................. 4
Current .............................................................................................................................. 5
Connecting Input Signals.......................................................................................................... 8
Connection Examples: STEP & DIR................................................................................ 9
Connection Examples: EN................................................................................................ 9
Connecting the Digital Output.................................................................................................. 10
Using the Optional Encoder ..................................................................................................... 12
Configuring the NI ISM-7401/7402 ......................................................................................... 12
Setting the Current............................................................................................................ 12
Setting Idle Current .......................................................................................................... 13
Load Inertia....................................................................................................................... 13
Step Size ........................................................................................................................... 14
Step Pulse Type ................................................................................................................ 15
Step Pulse Noise Filter ..................................................................................................... 16
Self Test.................................................................................................................................... 16
Reference Materials.................................................................................................................. 17
Torque-Speed Curves ....................................................................................................... 17
Heating.............................................................................................................................. 18
Mechanical Outlines ......................................................................................................... 23
Technical Specifications........................................................................................................... 28
Amplifier .......................................................................................................................... 28
Motor ................................................................................................................................ 29
Digital Inputs .................................................................................................................... 29
Fault Output...................................................................................................................... 29
Physical............................................................................................................................. 29
Incremental Encoder Specifications ................................................................................. 29
Mating Connectors and Accessories................................................................................. 30
Alarm Codes ..................................................................................................................... 30
Worldwide Support and Services ............................................................................................. 31