3
INTRODUCTION
Description
The LN3X Drive is a microstepping drive with a linear amplifier output stage. It is intended for
stepping motor applications where motor vibration must be minimized and EMI noise can't be tolerated. The
LN3X drive eliminates EMI noise in the steady state condition and minimizes EMI noise while running. The
drive
’s dual voltage supply design allows this unit to have speed vs torque curves superior to most
pulsewidth modulated drives while minimizing the stress on the power amplifier. The drive provides
extremely smooth movement with a microstepping resolution of 25600 steps/revolution; this makes this
product suitable involving in applications with precision equipment where vibration must be minimized.
The LN3X drive can be purchased with a wide range of motors with torque ranges between 60 and 600 in-
oz. The drive has two dip switches for easy access to current selection, auto-shutdown, 3rd harmonic
correction, and a test mode. Each function is described in detail further on in the manual.
A standard 25 pin D connector with TX, RX Gnd, limit inputs, Home input and Fault output make this drive
easy to interface with existing terminals on the market.
LN3X can be ordered in 2.5 amp or 3.5 amp peak current version. For 3.5 amp, the motor will go to standby
mode automatically after the motor stops for 2 seconds. The voltage of the motor is limited to the low
voltage supply. The high current version is intended for the applications that require high torque and low
speed applications. Caution should be used when configuring current setting. The motor can be damaged if
too much current beyond its specification is forced through the windings.
There is a 2k Internal EEPROM that can be used to store a move sequence after power up.
Features
The LN3X is a high performance linear microstepping drive designed for low noise applications. The
systems dual supply allows cool operation at idle and low speed operation while still enabling the drive to
obtain high speeds.
* Wave shape correction of 3%, 5% third harmonic distortion
* 115/220 VAC line voltage operation
* Auto-standby reduces motor current to 50% after 2 seconds if no input is received.
* Short circuit current protection
* Low voltage sense
* Current configurable through dip switches
* External fault indicators
Warranty
