SUNWIND M542H User manual

Sunwind Electronics Company Ltd.
Stepper Motor Driver:M542H
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User’s Manual-M542H
Stepper Motor Driver
Version 1.0
2006 All Rights Reserved
Attention: Please read this manual carefully before using the driver!
Sunwind Electronics Company Ltd.
Add:7th Floor,Block H,Juyin Industrial Park,Ganli Road 1#,Buji,Shenzhen,China.
Homepage:http://www.stepmotordriver.com E-mail:[e-mail]
Phone:[phone] Fax: [phone]

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The content in this manual has been carefully prepared and is believed to be accurate, but no
responsibility is assumed for inaccuracies.
Sunwind reserves the right to make changes without further notice to any products herein to improve
reliability, function or design. Sunwind does not assume any liability arising out of the application or use
of any product or circuit described herein; neither does it convey any license under its patent rights of
others.
Sunwind’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 Sunwind’s terms and conditions of sales, the user of Sunwind’s products in life support or aircraft
applications assumes all risks of such use and indemnifies Sunwind against all damages.
2006 by Sunwind Electronics Company Limited
All Rights Reserved

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Table of Contents
1. Introduction, Features and Applications································································· 5
Introduction ··········································································································· 5
Features ················································································································ 5
Applications············································································································· 5
2. Specifications and Operating Environment ··························································· 6
Electrical Specifications ························································································· 6
Operating Environment and other Specifications ·················································· 6
Mechanical Specifications······················································································· 7
3. Pin Assignment and Description············································································· 8
Connector P1 Configurations··················································································· 8
Connector P2 Configurations··················································································· 9
4. Control Signal Connector (P1) Interface·································································· 9
5. Connecting the Motor ····························································································· 10
Connections to 4-lead Motors··················································································· 10
Connections to 6-lead Motors··················································································· 11
Half Coil Configurations···························································································· 11
Full Coil Configurations ··························································································· 11
Connections to 8-lead Motors··················································································· 12
Series Connections··································································································· 12
Parallel Connections································································································· 12
6. Power supply Selection ··························································································· 13

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Regulated or Unregulated Power Supply ······························································· 13
Multiple Drivers········································································································· 14
Selecting Supply Voltage·························································································· 14
7. Selecting Microstep Resolution and Driver Output Current······································ 14
Microstep Resolution Selection ··············································································· 15
Current Settings ······································································································· 15
Dynamic Current Setting ·························································································· 15
Standstill Current Setting··························································································· 16
8. Wiring Notes·············································································································· 16
9. Typical Connection ································································································· 17
10. Sequence Chart of Control Signals········································································ 17
11. Protection Functions······························································································· 18
Over-voltage Protection···························································································· 18
Coil-ground Short Circuit Protection ········································································ 19
12. Frequently Asked Questions··················································································· 19
Problem Symptoms and Possible Causes ······························································ 19
APPENDIX················································································································ 20
Twelve Month Limited Warranty ·············································································· 20
Exclusions ··············································································································· 20
Obtaining Warranty Service······················································································ 20
Warranty Limitations································································································· 21
Shipping Failed Product ·························································································· 21

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1. Introduction,Features and Applications
Introduction
The M542H is an economical microstepping driver based on patented technology of Sunwind. It is
suitable for driving 2-phase and 4-phase hybrid stepping motors. By using the advanced bipolar
constant-current chopping technique, it can output more speed and torque from the same
motor,compared with traditional drivers, such as L/R drivers. Its 3-state current control technology allows
coil currents to be well controlled and with relatively small current ripple, therefore less motor heating is
achieved.
Features
Low cost and good high-speed torque
Supply voltage up to +100VDC
Output current up to 4.5A
Pulse frequency up to 300 KHz
3-state current control technology
Suitable for 2-phase and 4-phase motors
Over-voltage and short-circuit protection
Automatic idle-current reduction
16 selectable resolutions
DIP switch current setting with 8
different values
CW/CCW mode available (optional)
Optically isolated input signals
Slim size (118x75.5x33mm)
Applications
Suitable for a wide range of stepping motors from NEMA size 17 to 34. It can be used in various kinds of

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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 vibration,high speed and high precision.
2.Specifications and Operating Environment
Electrical Specifications(Tj=25°C)
Parameters
DM542H
Min
Typical
Max
Unit
Output Current
1.00
-
5.00 (3.0 RMS)
A
Input Voltage
+20
+50
+100
VDC
Logic Signal Current
7.00
10
16
Ma
Pulse input
frequency
0.00
-
300
KHz
PulseWidth
2.50
-
-
Us
Pulse Voltage
5.00
-
24
VDC
Isolation resistance
500.00
MΩ
Operating Environment and other Specifications
Cooling
Natural Cooling or Forced cooling
Operating Environment
Environment
Avoid dust,oil fog,conosive gases
Ambient Temperature
0℃－50℃
Humidity
40%RH －90%RH
Operatiing Temperature
70℃Max
Vibration
5.9m/s2 Max
Storage Temperature
-20℃－65℃
Weight
280gram(9.9oz)

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Mechanical Specifications (unit:mm, 1 inch = 25.4 mm)
Front View Side View
Figure 1: Mechanical specifications
*Recommended to use side mounting for better heat dissipation
Elimination of Heat
Driver’s reliable working temperature should be <65℃, and motor working temperature should be <80℃;
It is recommended to use automatic idle-current reduction mode, namely current automatically reduce to
60% when motor stops, so as to reduce driver heating and motor heating;

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It is recommended to side mounting to maximize heat sink area.
3.Pin Assignment and Description
The M542H 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 of the
M542H.
Connector P1 Configurations
Pin Function
Details
PUL+(+5V)
Pulse signal: In single pulse pulse/direction) mode, this input represents pulse
signal, effective for each rising or falling edge (set by inside jumpers in JP1);
4-5V when PUL-HIGH, 0-0.5V when PUL-LOW. In double pulse mode (pulse/pulse) , this
input represents clockwise (CW) pulse，effective for high level or low level (set
by inside jumpers in JP1). For reliable response, pulse width should be longer than
1.5μs. Series connect resistors for current-limiting when +12V or +24V used.
PUL-(PUL)
DIR+(+5V)
DIR signal: In single-pulse mode, this signal has low/high voltage
levels,representing two directions of motor rotation; in double-pulse mode (set
by inside jumper J3), this signal is counter-clock (CCW) pulse，effective for high
level or low level (set by inside jumper J1). For reliable motion response, DIR
signal should be ahead of PUL signal by 5μs at least. 4-5V when DIR-HIGH,0-0.5V
when DIR-LOW.
DIR-(DIR)
ENA+(+5V)
Enable signal: This signal is used for enabling/disabling the driver. High level
(NPN control signal, PNP and Differential control signals are on the
contrary,namely Low level for enabling.) for enabling the driver and low level for
disabling the driver. Usually left UNCONNECTED (ENABLED).
ENA-(ENA)
Single pulse and double pulses mode switch
There are two jumpers inside the M542H specifically for switch Single pulse and double pulses mode,as
shown in figure 2. Default setting is Single pulse mode.

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Connector P2 Configurations
Pin Function
Details
GND
DC power ground
+V
DC power supply,DC20~100V, Including voltage fluctuation
and EMF voltage.
A+,A-
Motor Phase A
B+,B-
Motor Phase B
4. Control Signal Connector (P1) Interface
The M542H can accept differential and single-ended input signals (including open-collector and PNP
output). The M542H 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. Recommend use line driver control signals to increase noise immunity of the
driver in interference environments. In the following figures, connections to open-collector and PNP
signals are illustrated.

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Figure 3: Connections to open-collector signal (common-anode)
Figure 4: Connection to PNP signal (common-cathode)
5. Connecting the Motor
The M542H driver 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.
Figure 5: 4-lead Motor Connections