MID-7654/7652 Servo Power Motor Drive User Guide
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Conventions
The following conventions are used in this guide:
»
The
»
symbol leads you through nested menu items and dialog box options to a final action.
The sequence
Options»Settings»General
directs you to pull down the
Options
menu, select
the
Settings
item, and select
General
from the last dialog box.
This icon denotes a note, which alerts you to important information.
This icon denotes a caution, which advises you of precautions to take to avoid injury, data loss,
or a system crash. When this symbol is marked on a product, refer to the
section
of this guide for information about precautions to take.
When this symbol is marked on a product, it denotes a component that may be hot.
Touching this component may result in bodily injury.
bold
Bold text denotes items that you must select or click in the software, such as menu items and
dialog box options. Bold text also denotes parameter names.
italic
Italic text denotes variables, emphasis, a cross-reference, or an introduction to a key concept.
Italic text also denotes text that is a placeholder for a word or value that you must supply.
monospace
Text in this font denotes text or characters that you should enter from the keyboard, sections
of code, programming examples, and syntax examples. This font is also used for the proper
names of disk drives, paths, directories, programs, subprograms, subroutines, device names,
functions, operations, variables, filenames, and extensions.
overline
Indicates the signal is active low.
Introduction
The National Instruments MID-7654/7652 servo power motor drive is a complete power amplifier and
system interface for use with four or two axes of simultaneous servo motion control, respectively.
The MID-7654/7652 is ideal for industrial and laboratory applications and has everything you need
to connect motors, encoders, limit switches, I/O, and other motion hardware to National Instruments
motion controllers.
The MID-7654/7652 can drive a broad range of servo motors with its pulse-width modulation (PWM)
amplifiers with user-specified peak and continuous output current settings. In all configurations, power
supplies are built in and use standard 240/120 VAC for operation. Electronics are fan-cooled to ensure
reliable operation.
The MID-7654/7652 simplifies your field wiring through separate encoder, limit switch, and motor
power removable screw terminal connector blocks for each axis. The terminal blocks do not require any
special wiring tools for installation. The MID-7654/7652 connects to National Instruments motion
controllers via a 68-pin, high-density interconnect cable.
The MID-7654/7652 has four levels of amplifier inhibit/disable protection for motion system shut down.
The front panel contains both enable and power switches for direct motor inhibiting and system
power-down operations. The MID-7654/7652 also has a host bus power interlock that activates an
internal driver inhibit signal if the host computer is shut down or if the motion controller interface cable
is disconnected. The inhibit input from the back panel connectors also inhibits the servo drives when
activated.