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User's Manual
The content in this manual has been carefully prepared and is believed to be accurate, but no
For
responsibility is assumed for inaccuracies.
DM422
Helix Linear reserves the right to make changes without further notice to any products herein
to improve reliability, function or design. Helix Linear does not assume any liability arising out
of the application or use of any product or circuit described herein; neither does it convey any
Fully Digital Stepping Driver
license under its patent rights of others.
Helix Linear's general policy does not recommend the use of its products in life support or
aircraft applications wherein a failure or malfunction of the product may directly threaten life
or injury. According to Helix Linear's terms and conditions of sales, the user of Helix Linear's
Attention: Please read this manual carefully before using the driver!
products in life support or aircraft applications assumes all risks of such use and indemnifies
Helix Linear against all damages.
©2019 Helix Linear Technologies.
All Rights Reserved
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Table of Contents
Summary of Contents for HELIX DM422
- Page 1 Fully Digital Stepping Driver license under its patent rights of others. Helix Linear's general policy does not recommend the use of its products in life support or aircraft applications wherein a failure or malfunction of the product may directly threaten life or injury.
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Page 2: Table Of Contents
Contents Contents Dynamic current setting ................9 Table of Contents Standstill current setting................10 1. Introduction, Features and Applications..............1 8. Wiring Notes ......................10 Introduction ......................1 9. Typical Connection....................10 Features ......................... 1 10. Sequence Chart of Control Signals ............... 11 Applications ...................... -
Page 3: Introduction, Features And Applications
The driven motors can run with much smaller noise, lower heating, smoother movement than most of the drivers in the markets. Its unique features make the DM422 an ideal solution for applications that require low-speed smoothness. Compared to the DM422C, the DM422 makes the motor run into higher speed and the user can configure the standstill current in the software. -
Page 4: Specifications
Mechanical Specifications ( unit: mm [inch] The DM422 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 5: Selecting Active Pulse Edge And Control Signal Mode
DM422 Digital Stepping Drive Manual V1.0 Selecting Active Pulse Edge and Control Signal Mode The DM422 supports PUL/DIR and CW/CCW modes and pulse active at rising or falling edge. See more information about these settings in Section 13. Default setting is PUL/DIR mode and rising edge active. -
Page 6: Full Coil Configurations
NEVER 6. Power Supply Selection The DM422 can match medium and small size stepping motors (from NEMA frame size 14 to 23) made by Helix Linear or other motor manufactures around the world. To achieve good Figure 6: 6-lead motor full coil (higher torque) connections driving performances, it is important to select supply voltage and output current properly. -
Page 7: Multiple Drivers
Selecting Supply Voltage Current Settings The power MOSFETs inside the DM422 can actually operate within +20 ~ +40VDC, including For a given motor, higher driver current will make the motor to output more torque, but at the same power input fluctuation and back EMF voltage generated by motor coils during motor shaft time causes more heating in the motor and driver. -
Page 8: Standstill Current Setting
DM422 Digital Stepping Drive Manual V1.0 DM422 Digital Stepping Drive Manual V1.0 Standstill current setting SW4 is used for this purpose. OFF meaning that the standstill current is software configured, and ON meaning that standstill current is set to be the same as the selected dynamic current. -
Page 9: Protection Functions
11. Protection Functions 12. Frequently Asked Questions To improve reliability, the driver incorporates some built-in protection functions. The DM422 uses In the event that your driver doesn’t operate properly, the first step is to identify whether the problem one RED LED to indicate what protection has been activated. The periodic time of RED is 3 s is electrical or mechanical in nature. -
Page 10: Problem Symptoms And Possible Causes
Symptoms Possible Problems No power This section will provide an overview of connection and basic setup instructions for Helix Microstep resolution setting is wrong Linear's digital stepping driver DM422 using the ProTuner software. These instructions will walk DIP switch current setting is wrong Motor is not rotating you through the following steps necessary to start up your driver and motor. - Page 11 DM422 Digital Stepping Drive Manual V1.0 DM422 Digital Stepping Drive Manual V1.0 Figure 12: License agreement Figure 14: Installation folder settings Choose “I agree to the terms of this license agreement” and click Next to continue installation. The user can enter user’s information in the following window. See Figure 13. After entering the user’s information, click Next to select installation folder, where you would like to install the ProTuner.
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Page 12: Connections And Testing
Figure 19: RS232 interface connection Testing the Stepping System Turn on the power supply, the green (Power) LED will light. The DM422 has default parameters stored in the driver. If the system has no hardware and wirings problem, the motor should be locked and the driver should be ready. -
Page 13: Software Introduction
DM422 Digital Stepping Drive Manual V1.0 DM422 Digital Stepping Drive Manual V1.0 and try again. Open the tuning software ProTuner and check driver status by clicking Err_check. If Option it’s Phase Error, check the motor, motor wirings and try again. If it still doesn’t The user can choose three drop-down menus by clicking “Option”, including Com Configuration,... -
Page 14: Tuning
DM422 Digital Stepping Drive Manual V1.0 DM422 Digital Stepping Drive Manual V1.0 Read RAM: Read parameter settings from the driver’s RAM to the ProTuner. Write RAM: Write parameter settings from the ProTuenr to the driver’s RAM. Write EEprom: Write parameter settings from the ProTuenr to the driver’s EEprom. -
Page 15: Anti-Resonance Introduction
Peak Current. Idle Time: See Idle Current. Pulse Filter Enable: Click the check box will turn on the internal pulse smoother or filter of DM422. DirectionDef: Direction Definition. Relate the default running direction to a HIGH level input in DIR or Low level input in DIR. This panel is used for PUL/DIR command type only. Please note that the default direction is also related to motor coil connections. -
Page 16: Internal Pluser
Repeats: Motion repeat times. If it is bidirectional, one repeat is moving forward then back. DM422 driver provides robust anti-resonance control to stop the vibrations and maintain equilibrium. This feature requires that the driver be configured with respect to the total inertia in the system. If set Distance: Moving distance in one direction in revolution. -
Page 17: Err_Check
DM422 Digital Stepping Drive Manual V1.0 DM422 Digital Stepping Drive Manual V1.0 OverCurrent: Over-current Protection. Protection will be activated when continuous current exceeds 16A. OverVoltage: Over-voltage Protection. When power supply voltage exceeds 42±1 VDC, protection will be activated. PhaseErr: Phase Error Protection. Motor power lines wrong & not connected will activate this protection. -
Page 18: Appendix
Helix Linear Technologies, Inc. warrants its products against defects in materials and workmanship for a period of 12 months from shipment out of factory. During the warranty period, Helix Linear will either, at its option, repair or replace products which proved to be defective. Exclusions...