M860 Stepper Motor Driver

TWO-PHASE  HYBRID STEPPER MOTOR DRIVER MA860H

Introduction
The MA860HH is a high performance microstepping driver suitable for a wide range of stepping motors, from NEMA size 57 to 86. Based on pure-sinusoidal current control and technology ,It can be used in various kinds of machines, such as X-Y tables, labeling machines, laser cutters, engraving machines, pick-place devices, and so on. Particularly adapt to the applications desired with low noise, low heating, smoother movement , high precision.

Features
Average current control，two phases sinusoidal current output.
Supply voltage up to 80VAC or +110VDC（18VAC or24VDC at least）
Optically isolated input/output
Short-voltage, over-voltage, over-current  and short-circuit protection
14 selectable resolutions
Automatic idle-current reduction
8 phase current output selections
Offline function
High starting speed
Large torque output at high speed

Electrical Specifications

Connector  Configurations
PUL+：  stepping pulse signals input positive
PUL-：stepping pulse signals input negative
DIR+： direction signals input positive
DIR-：  direction pulse signals input negative
ENA+： offline enable reset signals input positive
ENA-：  offline enable reset signals input negative
When offline function effective，other input signals are forbidden，output closed，without holding torque.
 
 
The MA860HH can accept differential and single-ended inputs (including open-collector and PNP output).




Microstep resolution is set by SW5, 6, 7, 8 of the DIP switch as shown in the following table:
 
 
SW4 is used for this purpose. OFF meaning that the standstill current is set to be half of the selected dynamic current, and ON meaning that standstill current is set to be the same as the selected dynamic current.
The current automatically reduced to 70% of the selected dynamic current 200ms after the last pulse.
 

                    
The first three bits (SW1, 2, 3) of the DIP switch are used to set the dynamic current. Select a setting
closest to your motor’s required current.
 

 
A series motor configuration would typically be used in applications where a higher torque at lower speeds is required.
Because this configuration has the most inductance, the performance will start to degrade at higher speeds. In series mode,
the motors should also be run at only 70% of their rated current to prevent over heating. 

An 8 lead motor in a parallel configuration offers a more stable, but lower torque at lower speeds. But because of the lower
inductance, there will be higher torque at higher speeds. Multiply the per phase (or unipolar) current rating by 1.96, or the
bipolar current rating by 1.4, to determine the peak output current.

 
fixxing
 
requireing 20mm spare space， away from heating devices，avoiding dust ,oil mist ,orrosive gases ,damp, shake
Fault Diagnosis