Leadshine Technology Co. DM322E Manuale utente

User Manual

DM322E

2-Phase Digital Stepper Drive

Revision 1.0

Address: Floor 11, Block A3, Nanshan iPark, Xueyuan Avenue 1001, Shenzhen, Guangdong, 518055, China

Tel: (86)755-26409254 Fax: (86)755-26402718

Web: www.leadshine.com Sales: [email protected]m

Support: [email protected]m

DM322E Digital Stepper Drive User Manual

Notice

Read this manual carefully before any assembling and using. Incorrect handling of products in this manual can result

in injury and damage to persons and machinery. Strictly adhere to the technical information regarding installation

requirements.

This manual is not for use or disclosure outside of Leadshine except under permission. All rights are reserved. No part

of this manual shall be reproduced, stored in retrieval form, or transmitted by any means, electronic, mechanical,

photocopying, recording, or otherwise without approval from Leadshine. While every precaution has been taken in

the preparation of the book, Leadshine assumes no responsibility for errors or omissions. Neither is any liability

assumed for damages resulting from the use of the information contained herein.

This document is proprietary information of Leadshine that is furnished for customer use ONLY. Information in this

document is subject to change without notice and does not represent a commitment on the part of Leadshine.

Therefore, information contained in this manual may be updated from time-to-time due to product improvements,

etc., and may not conform in every respect to former issues.

Record of Revisions

Revision

Date

Description of Release

1.0

Dec, 2016

Initial Release

DM322E Digital Stepper Drive User Manual

Table of Contents

1. Introductions................................................................................................................................................................ 1

1.1 Features................................................................................................................................................................ 1

1.2 Applications......................................................................................................................................................... 1

2. Specifications................................................................................................................................................................ 1

2.1 Electrical Specifications ...................................................................................................................................... 1

2.2 Environment ........................................................................................................................................................ 2

2.3 Mechanical Specifications................................................................................................................................... 2

2.4 Elimination of Heat.............................................................................................................................................. 2

3. Connection PinAssignments and LED Indication.................................................................................................... 3

3.1 Connector P1 Configurations............................................................................................................................... 3

3.2 Connector P2 Configurations............................................................................................................................... 3

3.3 LED Light Indication........................................................................................................................................... 4

4. Control Signal Connector (P1) Interface................................................................................................................... 4

5. Motor Connection........................................................................................................................................................ 5

5.1 Connections of 4-lead Motor............................................................................................................................... 5

5.2 Connections of 6-lead Motor............................................................................................................................... 5

5.2.1 Half Coil Configuration.......................................................................................................................... 5

5.2.2 Full Coil Configuration.......................................................................................................................... 5

5.3 Connections of 8-lead Motor............................................................................................................................... 6

5.3.1 Series Connection.................................................................................................................................... 6

5.3.2 Parallel Connection................................................................................................................................. 6

6. Power Supply Selection............................................................................................................................................... 6

6.1 Regulated or Unregulated Power Supply............................................................................................................. 7

6.2 Power Supply Sharing ......................................................................................................................................... 7

6.3 Selecting Supply Voltage..................................................................................................................................... 7

7. DIP Switch Configurations ......................................................................................................................................... 7

7.1 Microstep Resolution Configurations.................................................................................................................. 7

7.2 Current Configurations........................................................................................................................................ 8

7.2.1 Dynamic Current Configurations ......................................................................................................... 8

7.2.2 Standstill Current Configuration .......................................................................................................... 8

7.3 Automatic Motor Matching & Self Configuration............................................................................................... 8

8. Wiring Notes................................................................................................................................................................. 9

9. Typical Connection...................................................................................................................................................... 9

10. Sequence Chart of Control Signals .......................................................................................................................... 9

11. Protection Functions................................................................................................................................................ 10

12. Troubleshooting ....................................................................................................................................................... 11

13. Warranty .................................................................................................................................................................. 12

14. Contact Us................................................................................................................................................................ 12

DM322E Digital Stepper Drive User Manual

Page | 1

1. Introductions

The DM322E is a digital stepper drive with simple design and easy setup. By implementing Leadshine advanced

stepper control technology, this stepper drive is able to power 2-phase and 4 phase stepper motors smoothly with

optimal torque and low motor heating & noise. Its operating voltage is 18-30VDC and it can output up to 2.2A current.

All the micro step and output current are done via DIP switches. Therefore, the DM322E are ideal choices for

applications requiring simple step & direction control of NEMA11, 14, 16, 17 stepper motors.

1.1 Features

Anti-Resonance for optimal torque, extra smooth motion, low motor heating and noise

Motor auto-identification and parameter auto-configuration for optimal torque from wide-range motors

Step & direction (PUL/DIR) control

Multi-Stepping for smooth motor movement

Optically isolated inputs

Input voltage 18-30VDC

8 selectable micro-step resolutions of 400-12800 via DIP switches

8 selectable output current settings of 0.3 –2.2A via DIP switches

Soft-start with no “jump” when powered on

Pulse input frequency up to 70 KHz.

Automatic idle-current reduction

Protections for over-voltage and over-current

1.2 Applications

The DM322E stepper drive are designed to power 2 phase (1.8°) or 4-phase (0.9°) NEMA11, 14, 16, 17 hybrid stepper

motors. It can be easily adopted in many industries (CNC, medical, automation, packaging…), such as X-Y tables,

engraving machines, labeling machines, mills, plasma, laser cutters, pick and place devices, and so on. Its excellent

performance, simple design, and easy setup make it ideal for many step & direction control type applications.

2. Specifications

2.1 Electrical Specifications

Parameters

DM322E

Min

Typical

Max

Unit

Output Current

0.3

2.2 (1.6 RMS)

Supply Voltage

VDC

Logic signal current

Pulse input frequency

kHz

Minimal pulse width

7.5

μS

Minimal direction setup

7.5

μS

Isolation resistance

100

MΩ

DM322E Digital Stepper Drive User Manual

Page | 2

2.2 Environment

Cooling

Natural Cooling or Forced cooling

Operating Environment

Environment

Avoid dust, oil fog and corrosive gases

Ambient Temperature

0°C －65°C (32°F - 149°F)

Humidity

40%RH－90%RH

Operating Temperature

0°C －50°C (32°F - 122°F)

Vibration

10-50Hz / 0.15mm

Storage Temperature

-20°C －65°C (-4°F - 149°F)

Weight

Approx. 90g (3.5 oz)

2.3 Mechanical Specifications

(unit: mm [1inch=25.4mm])

Figure 1: Mechanical specifications

* Side mounting recommended for better heat dissipation

2.4 Elimination of Heat

DM322E reliable working temperature should be < 60℃(140°F)

It is recommended to mount the drive vertically to maximize heat sink area. Use forced cooling method to cool if

necessary.

DM322E Digital Stepper Drive User Manual

Page | 3

3. Connection PinAssignments and LED Indication

The DM322E has two connector blocks P1&P2 (see above picture). P1 is for control signals connections, and P2 is 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.

3.1 Connector P1 Configurations

Pin Function

Details

PUL

Pulse signal: Pulse active at rising edge; 4-5V when PUL-HIGH, 0-0.5V when PUL-LOW.

Minimal pulse width of 2.5μs. Add a resistor for current-limiting at +12V or +24V input logic

voltage (1K for +12V, 2k for +24V). The same as DIR and ENA signals.

DIR

DIR signal: This signal has low/high voltage levels to represent two directions of motor

rotation.. Minimal direction setup time of 5μs. Also swapping the connection of two wires of a

coil (e.g. A+ and A-) to the drive will reverse motor direction.

OPTO

Opto-coupler power supply, and the typical voltage is +5V. Series connect resistors (at the

PUL, DIR, ENA terminals) for current-limiting when +12V or +24V used.

ENA

Enable signal: This signal is used for enabling/disabling the drive. High level +5V (NPN

control signal) for enabling the drive and low level for disabling the drive. PNP and

Differential control signals are on the contrary, namely Low level for enabling. By default it

is left UNCONNECTED (ENABLED).

Notice

Notes: (1) shielding control signal wires is suggested; (2) To avoid interference, don’t tie PUL/DIR control

signal and motor wires together

3.2 Connector P2 Configurations

Pin Function

Details

GND

Power supply ground connection.

+Vdc

Power supply positive connection. Suggest 24VDC power supply voltage

A+, A-

Motor Phase A connections. Connect motor A+ wire to A+ Pin; motor A- wire to A-

B+, B-

Motor Phase B connections. Connect motor B+ wire to B+ Pin; motor B- wire to B-

DM322E Digital Stepper Drive User Manual

Page | 4

Warning

Warning: Don’t plug or unplug the P1 & P2 terminal block to avoid drive damage or injury when DM322E

is powered on.

3.3 LED Light Indication

There are two LED lights for DM322E. The GREEN one is the power indicator which will be always on generally. The

RED one is a protection indicator which will flash 1-2 times in a 3-second period, when protection enabled for a

DM322E. Different number of flashes indicates different protection type (read section 11 for detail).

4. Control Signal Connector (P1) Interface

The DM322E can accept differential and single-ended inputs (including open-collector and PNP output). The DM322E

has 3 optically isolated logic inputs which are located on connector P1 to accept line drive control signals. These inputs

are isolated to minimize or eliminate electrical noises coupled with the drive control signals. Recommend using line

Qdrive control signals to increase noise immunity for the drive in interference environments. In the following figures,

connections to open-collector and PNP signals are illustrated.

DM422 Driver

Controller

VCC PUL

VDC

270Ω

OPTO

ENA

R=0 if VCC=5V;

R=1K(Power>0.125W) if VCC=12V;

R=2K(Power>0.125W) if VCC=24V;

R must be connected to control signal terminal.

PUL

DIR

ENABLE

DIR

Figure 2: Connections to open-collector signal (common-anode)

DM322E Driver

Controller

VCC

PUL

270Ω

OPTO

ENA

R=0 if VCC=5V;

R=1K(Power>0.125W) if VCC=12V;

R=2K(Power>0.125W) if VCC=24V;

R must be connected to control signal terminal.

PUL+

DIR

PUL-

DIR+

DIR-

ENA+

ENA-

Figure 3: Connections to difference control signal

DM322E Digital Stepper Drive User Manual

Page | 5

5. Motor Connection

The DM322E can drive 2-phase and 4-pahse bipolar hybrid stepper motors with 4, 6, or 8 wires.

5.1 Connections of 4-lead Motor

The 4 lead motors are the least flexible and easy to connect. And the Speed –torque of motor depends on winding

inductance. The output current from drive that is multiply the specified phase current by 1.4 to determine the peak

output current.

Figure 4: 4-lead Motor Connections

5.2 Connections of 6-lead Motor

Like 8 lead stepping motors, 6 lead motors have two configurations available for high speed or high torque operations.

The higher speed configuration, or half coil, is described, because it uses one half of the motor’s inductor windings.

The higher torque configuration, or full coil, uses the full coil windings.

5.2.1 Half Coil Configuration

As previously stated, the half coil configuration uses 50% of the motor phase windings. This gives lower inductance,

hence, lower torque output. Like the parallel connection of 8 lead motor, the torque output will be more stable at higher

speeds. This configuration is also referred to as half chopper. In setting the drive output current multiply the specified

per phase (or unipolar) current rating by 1.4 to determine the peak output current.

Figure 5: 6-lead motor half coil (higher speed) connections

5.2.2 Full Coil Configuration

The full coil configuration on a six lead motor should be used in applications where higher torque at lower speed is

desired. This configuration is also referred to as full copper. In full coil mode, the motors should be run at only 70% of

their rated current to prevent overheating.

DM322E Digital Stepper Drive User Manual

Page | 6

Figure 6: 6-lead motor full coil (higher torque) connections

5.3 Connections of 8-lead Motor

8 lead motors offer a high degree of flexibility to the system designer in that they may be connected in series or parallel,

thus satisfying a wide range of applications.

5.3.1 Series Connection

A series motor configuration would typically be used in applications where a higher torque at lower speed is required.

Because this configuration has the most inductance, the performance will start to degrade at higher speed. In series

mode, the motors should also be run at only 70% of their rated current to prevent overheating.

Figure 7: 8-lead motor series connections

5.3.2 Parallel Connection

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 phase (or unipolar) current rating by 1.96,

or the bipolar current rating by 1.4, to determine the peak output current.

Figure 8: 8-lead motor parallel connections

6. Power Supply Selection

The DM322E can power medium and small size stepping motors (frame size from NEMA11 to 17) made by Leadshine

or other motor manufacturers. To get good driving performances, it is important to select supply voltage and output

DM322E Digital Stepper Drive User Manual

Page | 7

current properly. Generally speaking, supply voltage determines the high speed performance of the motor, while output

current determines the output torque of the driven motor (particularly at lower speed). Higher supply voltage will allow

higher motor speed to be achieved, at the price of more noise and heating. If the motion speed requirement is low, it’s

better to use lower supply voltage to decrease noise, heating and improve reliability.

6.1 Regulated or Unregulated Power Supply

Both regulated and unregulated power supplies can be used to supply the drive. However, unregulated power supplies

are preferred due to their ability to withstand current surge and fast response for current change. If you prefer to a

regulated power supply, it is suggested to choose such a power supply specially designed for stepper/servo controls

such as Leadshine RPS series (http://www.leadshine.com/producttypes.aspx?producttype=regulated-switching). Or, in

the case when only normal switching power supplies are available, it is important to use “OVERSIZE” high current

output rating power supplies (for example, using a 4A power supply for 3A stepper motor) to avoid problems such as

current clamp. On the other hand, if unregulated supply is used, one may use a power supply of lower current rating

than that of motor (typically 50%～70% of motor current). The reason is that the drive draws current from the power

supply capacitor of the unregulated supply only during the ON duration of the PWM cycle, but not during the OFF

duration. Therefore, the average current withdrawn from power supply is considerably less than motor current. For

example, two 3A motors can be well supplied by one power supply of 4A rating.

6.2 Power Supply Sharing

Multiple DM322E drives can share one power supply to reduce cost, if that power supply has enough power capacity.

To avoid cross interference, connect each stepper drive directly to the shared power supply separately. To avoid cross

interference, DO NOT daisy-chain connect the power supply input pins of the Drivers. Instead connect them to power

supply separately.

6.3 Selecting Supply Voltage

The DM322E is designed to operate within 18-30VDC voltage input. When selecting a power supply, besides voltage

from the power supply power line voltage fluctuation and back EMF voltage generated during motor deceleration

needs also to be taken into account. Ideally it is suggested to use a power supply with the output voltage of 24VDC,

leaving room for power line voltage fluctuation and back-EMF.

Higher supply voltage can increase motor torque at higher speeds, thus helpful for avoiding losing steps. However,

higher voltage may cause bigger motor vibration at lower speed, and it may also cause over-voltage protection or even

drive damage. Therefore, it is suggested to choose only sufficiently high supply voltage for intended applications.

7. DIP Switch Configurations

This drive uses an 6-bit DIP switch to set microstep resolution, and motor operating current, as shown below:

Dynamic Current Microstep Resolution

23456

7.1 Microstep Resolution Configurations

Microstep resolution is set by SW4, 5, 6 of the DIP switches as shown in the following table:

Indice

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