Intelligent Motion Systems Ultra Miniature High Performance Microstepping Drpive 用户手册

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SECTION 2 
INTRODUCTION 
 
The IM481H is a high performance, yet low cost microstepping driver that utilizes 
advanced hybrid technology to greatly reduce size without sacrificing features. The 
IM481H is exceptionally small, easy to interface and use, yet powerful enough to handle 
the most demanding applications. 
 
The IM481H has 14 built in microstep resolutions (both binary and decimal). The 
resolution can be changed at any time without the need to reset the driver. This feature 
allows the user to rapidly move long distances, yet precisely position the motor at the end 
of travel without the expense of high performance controllers. 
 
With the development of proprietary and patented circuits, ripple current has been 
minimized to reduce motor heating common with other designs, allowing the use of low 
inductance motors improving high speed performance and system efficiency. 
 
The IM481H, because of its ultra small size and low cost, can be used to increase 
accuracy and smoothness in systems using higher step angle motors. In many instances 
mechanical gearing can be replaced with microstepping, reducing cost and eliminating 
potential maintenance. 
 
OPTIONAL INTERFACE BOARD The INT-481 is a plug on interface board which can be 
used with the IM481H to facilitate testing or in situations where panel mounting is 
preferred 
 
The INT-481 contains extra circuitry which includes: Opto isolators for step clock, 
direction, enable, and reset, along with extra fault detection circuits, +5vdc supply, input 
capacitor, and fault and power LED’s. Wiring is done through a 15 pin screw terminal 
header. A four position dip switch is supplied for microstep resolution selection. 
 
FEATURES
 
 
Very Low Cost 
Ultra Miniature 1.1” x 2.7” x 0.17” 
High Input Voltage (+12 to +48Vdc) 
High Output Current (1.5 Amps RMS, 2.3 Amps Peak) 
Advanced Hybrid Design 
Replaces Mechanical Gearing for Smoothness and Positioning 
Designed for High Performance, Low Inductance Stepping Motors 
20 KHz Chopping Rate 
Up to 10 MHz Step Clock Rate 
14 Selectable Microstepping Resolutions that can be  changed On-The-Fly. 
Up to 51,200 Steps/Rev with a 1.8
o  
Motor 
Automatically Switches between Slow and Fast Decay for Unmatched 
           Performance 
At Full Step Output