StepperOnline MA860H User Manual
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StepperOnline MA860H User Manual

High performance microstepping driver
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MA860H Microstepping Driver Manual V1.0
StepperOnline
User's Manual
For
MA860H
High Performance Microstepping Driver
Version 1.0
.2011 All Rights Reserved
Attention: Please read this manual carefully before using the driver!
sales@stepperonline.com
0086-25-87156578
www.omc-stepperonline.com

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Summary of Contents for StepperOnline MA860H

  • Page 1 MA860H Microstepping Driver Manual V1.0 StepperOnline User’s Manual MA860H High Performance Microstepping Driver Version 1.0 .2011 All Rights Reserved Attention: Please read this manual carefully before using the driver! sales@stepperonline.com 0086-25-87156578 www.omc-stepperonline.com...

  • Page 2: Operating Environment And Other Specifications

    1. Introduction, Features and Applications Introduction The MA860H is a high performance microstepping driver based on pure-sinusoidal currentcontrol technology. Owing to the above technology and the self-adjustment technology (self-adjust current control parameters) according to different motors, the driven motors can run with smaller noise, lower heating, smoother movement and have better performances at higher speed than most of the drivers in the markets.

  • Page 3: Pin Assignment And Description

    3. Pin Assignment and Description The MA860H has two connectors, connector P1 for control signals connections, and connector P2 for power and motor connections. The following tables are brief descriptions of the two connectors. More detailed descriptions of the pins and related issues are presented in section 4, 5, 9.

  • Page 4: Connector P2 Configurations

    4. Control Signal Connector (P1) Interface The MA860H can accept differential and single-ended inputs (including open-collector and PNP output). The MA860H has 3 optically isolated logic inputs which are located on connector P1 to accept line driver control signals. These inputs are isolated to minimize or eliminate electrical noises coupled onto the drive control signals.

  • Page 5: Connecting The Motor

    StepperOnline 5. Connecting the Motor The MA860H can drive any 2-pahse and 4-pahse hybrid stepping motors. Connections to 4-lead Motors 4 lead motors are the least flexible but easiest to wire. Speed and torque will depend on winding inductance. In setting the driver output current, multiply the specified phase current by 1.4 to determine the peak output current.

  • Page 6: Power Supply Selection

    6. Power Supply Selection The MA860H can match Large and small size stepping motors (from Nema size 17 to 42) made by NC-Tech or other motor manufactures around the world. To achieve good driving performances, it is important to select supply voltage and output current properly.

  • Page 7: Selecting Microstep Resolution And Driver Output Current

    Selecting Supply Voltage The power MOSFETS inside the MA860H can actually operate within 18 ~ 80VAC or +24 ~ +200VDC, including power input fluctuation and back EMF voltage generated by motor coils during motor shaft deceleration. Higher supply voltage can increase motor torque at higher speeds, thus helpful for avoiding losing steps.

  • Page 8: Wiring Notes

    7.2A 5.00 Notes: Ref Current table on the screen printing is used for the users of the MA860H to refer. Due to motor inductance, the actual current in the coil may be smaller than the dynamic current setting, particularly under high speed condition.

  • Page 9: Sequence Chart Of Control Signals

    MA860H Microstepping Driver Manual V1.0 StepperOnline Figure 10: Typical connection 10. Sequence Chart of Control Signals In order to avoid some fault operations and deviations, PUL, DIR and ENA should abide by some rules, shown as following diagram: Figure 11: Sequence chart of control signals Remark: a) t1: ENA must be ahead of DIR by at least 5 s.

  • Page 10: Frequently Asked Questions

    MA860H Microstepping Driver Manual V1.0 StepperOnline 12. Frequently Asked Questions In the event that your driver doesn’t operate properly, the first step is to identify whether the problem is electrical or mechanical in nature. The next step is to isolate the system component that is causing the problem. As part of this process you may have to disconnect the individual components that make up your system and verify that they operate independently.

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