Leadshine DM2282T User manual

User’s Ma nu a l
For
DM2282T
Fully Digital Stepper Dr i ve
Version 1.0
Designed by StepperOnline®
Manufactured by Leadshine®
©2017 All Rights ReservedAttention: Please read this manual
carefully before using the drive!
#7 Zhongke Road, Jiangning, Nanjing, China
T: 0086-2587156578
Web site: www.omc-stepperonline.com
E-Mail: [e-mail]

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Table of Contents
1. Introduction, Features and Applications................................................................................................................................ 1
Introduction........................................................................................................................................................................1
Features.............................................................................................................................................................................. 1
Applications....................................................................................................................................................................... 1
2. Specifications......................................................................................................................................................................... 1
Electrical Specifications (Tj = 25℃/77℉)........................................................................................................................1
Operating Environment and other Specifications..............................................................................................................2
Mechanical Specifications (unit: mm [1inch=25.4mm]).................................................................................................. 2
Elimination of Heat............................................................................................................................................................2
3. Pin Assignment and Description............................................................................................................................................3
Connector P1 Configurations.............................................................................................................................................3
Connector P2 Configurations.............................................................................................................................................3
RS232 Communication Port.............................................................................................................................................. 4
4. Control Signal Connector (P1) Interface............................................................................................................................... 4
5. Connecting the Motor.............................................................................................................................................................5
Connections to 4-lead Motors............................................................................................................................................5
Connections to 6-lead Motors............................................................................................................................................5
Half Coil Configurations....................................................................................................................................................5
Full Coil Configurations.................................................................................................................................................... 5
Connections to 8-lead Motors............................................................................................................................................6
Series Connections.............................................................................................................................................................6
Parallel Connections.......................................................................................................................................................... 6
6. Power Supply Selection......................................................................................................................................................... 6
7. Selecting Microstep Resolution and Drive Output Current...................................................................................................7
Microstep Resolution Selection......................................................................................................................................... 7
Current Settings..................................................................................................................................................................7
Dynamic Current Setting................................................................................................................................................... 8
Standstill Current Setting...................................................................................................................................................8
Motor auto-identification and parameter auto-configuration............................................................................................8
8. Wiring Notes.......................................................................................................................................................................... 8

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9. Typical Connection................................................................................................................................................................ 8
10. Sequence Chart of Control Signals...................................................................................................................................... 9
11. Protection Functions...........................................................................................................................................................10
12. Frequently Asked Questions.............................................................................................................................................. 10
Problem Symptoms and Possible Causes........................................................................................................................ 10

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1. Introduction, Features and Applications
Introduction
The DM2282T is a fully digital stepper drive developed with advanced DSP control algorithm based on the latest
motion control technology. It has achieved a unique level of system smoothness, providing optimal torque and nulls
mid-range instability. Its motor auto-identification and parameter auto-configuration feature offers quick setup to
optimal modes with different motors. Compared with traditional analog drives, DM2282T can drive a stepper motor at
much lower noise, lower heating, and smoother movement. Its unique features make DM2282T an ideal choice for high
requirement applications.
Features
Anti-Resonance provides optimal torque and nulls mid-range instability
Motor auto-identification and parameter auto-configuration technology, offers optimal responses with different
motors
Multi-Stepping allows a low resolution step input to produce a higher microstep output, thus offers smoother motor
movement
Microstep resolutions programmable, from full-step to 25600. It can also be set via DIP switches.
Soft-start with no “jump” when powered on
Supply voltage up to 240 VAC
Output current programmable, from 0.5A to 8.2A. It can also be set via DIP switches.
Pulse input frequency up to 200 KHz, TTL compatible and optically isolated input
Automatic idle-current reduction
Suitable for 2-phase and 4-phase motors
Support PUL/DIR and CW/CCW modes
Over-voltage, Under-voltage, over-current, phase-error protections
Applications
Suitable for a wide range of stepping motors, size from NEMA34 to 51. It can be used in various kinds of machines,
such as X-Y tables, engraving machines, labeling machines, laser cutters, pick-place devices, and so on. Particularly
adapt to the applications desired with low noise, low heating, high speed and high precision.
2. Specifications
Electrical Specifications (Tj = 25℃/77℉)
Parameters
DM2282T
Min Typical Max Unit
Output Peak Current 0.5 - 8.2 A
Input Voltage 180 220 240 VAC
Logic Signal Current 7 10 16 mA
Pulse input frequency 0 - 200 kHz
Pulse Width 2.5 - - uS
Isolation resistance 500 MΩ

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Operating Environment and other Specifications
Cooling
Operating Environment
Storage Temperature
Weight
Natural Cooling or Forced cooling
Environment Avoid dust, oil fog and corrosive gases
Ambient Temperature 0℃ － 50℃
Humidity 40%RH －90%RH
Operating Temperature 45℃Max
Vibration 10-55Hz/0.15mm
-20℃ － 65℃
Approx. 1.3Kg(45.86oz)
Mechanical Specifications (unit: mm [1inch=25.4mm])
Figure 1: Mechanical specifications
*Recommend use side mounting for better heat dissipation
Elimination of Heat
Drive’s reliable working temperature should be <45℃(113 ℉), and motor working temperature should be
<80℃(176℉);
It is recommended to use automatic idle-current mode, namely current automatically reduce to 50% when motor
stops, so as to reduce drive heating and motor heating;
It is recommended to mount the drive vertically to maximize heat sink area. Use forced cooling method to cool
the system if necessary.

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3. Pin Assignment and Description
The DM2282T 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.
Connector P1 Configurations
Pin Function
Details
DIR-
DIRsignal: In single-pulse mode, this signal has low/high voltage levels, representing two
directions of motor rotation; in CW/CCW mode (software configurable), this signal is counter-
clock (CCW) pulse, active both at high level and low level. 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. Please note that rotation direction is also related to motor-driver wiring match.
Exchanging the connection of two wires for a coil to the driver will reverse motion direction.
Series connect resistors for current-limiting when +12V or +24V used. The same as DIR and ENA
signal.
DIR+
PUL-
Pulsesignal: In single pulse (pulse/direction) mode, this input represents pulse signal, each
rising or falling edge active ; in CW/CCW mode (software configurable),this input represents
clockwise(CW) pulse, active both at high level and low level. 4-5V when PUL-HIGH, 0-0.5V when
PUL-LOW. For reliable response, pulse width should be longer than 2.5μs.
PUL+
ENA-
Enablesignal: 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+
FAULT+
Fault Signal: OC output signal, active when one of the following protection is activated: over-voltage,
over current, low voltage, phase error and over-temperature. This port can sink or source 20mA
current at 24V. In default, the resistance between FAULT+ and FAULT- is high impedance in normal
operation and become low when DM2282T goes into error.
FAULT-
Connector P2 Configurations
Pin Function
Details
PE
Recommend connect this port to the ground for better safety.
L
Power supply inputs. If AC input, recommend use isolation transformers with theoretical output
voltage of 180~240VAC.
N
A+
Motor Phase A
A-
B+
Motor Phase B
B-

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RS232 Communication Port
The RS232 communication port is used to configure the DM2282T’s peak current, microstep, active level, current loop
parameters and anti-resonance parameters.
RS232 Communication Port – RJ11
Pin
Name
I/O
Description
1
NC
-
Not connected.
2
+5V
O
+5V power output.
3
TxD
O
RS232 transmit.
4
GND
GND
Ground.
5
RxD
I
RS232 receive.
6
NC
-
Not connected.
4. Control Signal Connector (P1) Interface
The DM2282T can accept differential and single-ended inputs (including open-collector and PNP output). The
DM2282T 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 onto the drive control signals.
Recommend use line drive control signals to increase noise immunity of the drive in interference environments. In
the following figures, connections to open-collector and PNP signals are illustrated.
C on t ro lle r
Dr i v e
C on t ro lle r
Drive
VCC
PUL
DIR
ENABLE
PUL+
PUL-
DIR+
DIR-
ENA+
ENA-
PUL
DIR
ENABLE
PUL+
VCC PUL-
DIR+
DIR-
ENA+
ENA

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Figure 3: Connections to open-collector Figure 4: Connection to PNP signal (common-cathode)
signal (common-anode)
5. Connecting the Motor
The DM2282T 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 drive output current, multiply the specified phase current by 1.4 to determine the peak output current.
Figure 5: 4-lead Motor
Connections
Connections to 6-lead Motors
Like 8 lead stepping motors, 6 lead motors have two configurations available for high speed or high torque
operation. The higher speed configuration, or half coil, is so described because it uses one half of the motor’s
inductor windings. The higher torque configuration, or full coil, uses the full windings of the phases.
Half Coil Configurations
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 6: 6-lead motor half coil (higher speed) connections
Full Coil Configurations
The full coil configuration on a six lead motor should be used in applications where higher torque at lower speeds
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 over heating.

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Figure 7: 6-lead motor full coil (higher torque)
connections
Connections to 8-lead Motors
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.
Series Connections
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.
Figure 8: 8-lead motor series
connections
Parallel Connections
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.
Figure 9: 8-lead motor parallel
connections
6. Power Supply Selection
The power supply voltage can work normally between the voltage range specified by the driver. The DM2282T is directly
powered by AC. It is recommended that the user use the highest voltage lower than the driver's specified voltage to avoid
the grid fluctuation exceeding the driver voltage operating range.
To reduce costs, two or three drivers can share a single power supply, but the power of power supply should be large
enough.

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7. Selecting Microstep Resolution and Drive Output Current
This drive uses an 8-bit DIP switch to set microstep resolution, and motor operating current, as shown
below:
Microstep Resolution Selection
Microstep resolution is set by SW5, 6, 7, 8 of the DIP switch as shown in the following table:
Microstep Steps/rev.(for 1.8°motor) SW5 SW6 SW7 SW8
Default
2 400
4 800
8 1600
16 3200
32 6400
64 12800
128 25600
5 1000
10 2000
20 4000
25 5000
40 8000
50 10000
100 20000
125 25000
ON ON ON ON
OFF ON ON ON
ON OFF ON ON
OFF OFF ON ON
ON ON OFF ON
OFF ON OFF ON
ON OFF OFF ON
OFF OFF OFF ON
ON ON ON OFF
OFF ON ON OFF
ON OFF ON OFF
OFF OFF ON OFF
ON ON OFF OFF
OFF ON OFF OFF
ON OFF OFF OFF
OFF OFF OFF OFF
Current Settings
For a given motor, higher drive current will make the motor to output more torque, but at the same time causes
more heating in the motor and drive. Therefore, output current is generally set to be such that the motor will not
overheat for long time operation. Since parallel and serial connections of motor coils will significantly change
resulting inductance and resistance, it is therefore important to set drive output current depending on motor phase
current, motor leads and connection methods. Phase current rating supplied by motor manufacturer is important in
selecting drive current, however the selection also depends on leads and connections.
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.

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Dynamic Current Setting
Peak Current RMS Current SW1 SW2 SW3
Default Default
2.2A 1.6A
3.2A 2.3A
4.2A 3.2A
5.2A 3.7A
6.3A 4.4A
7.2A 5.2A
8.2A 5.9A
OFF OFF OFF
ON OFF OFF
OFF ON OFF
ON ON OFF
OFF OFF ON
ON OFF ON
OFF ON ON
ON ON ON
Notes: Due to motor inductance, the actual current in the coil may be smaller than the dynamic current
setting, particularly under high speed condition.
Standstill Current Setting
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 50% of the selected dynamic current one second after the last pulse.
Motor auto-identification and parameter auto-configuration
The drive will operate the function of motor auto-identification and parameter auto-configuration when power on,
and calculate the optimal parameter using for current control after this processing,, then the stepper motor can
output optimal torque.
8. Wiring Notes
In order to improve anti-interference performance of the drive, it is recommended to use twisted pair shield
cable.
To prevent noise incurred in PUL/DIR signal, pulse/direction signal wires and motor wires should not be tied
up together. It is better to separate them by at least 10 cm, otherwise the disturbing signals generated by motor
will easily disturb pulse direction signals, causing motor position error, system instability and other failures.
If a power supply serves several drives, separately connecting the drives is recommended instead
of daisy-chaining.
It is prohibited to pull and plug connector P2 while the drive is powered ON, because there is high current
flowing through motor coils (even when motor is at standstill). Pulling or plugging connector P2 with power
on will cause extremely high back-EMF voltage surge, which may damage the drive.
9. Typical Connection
A complete stepping system should include stepping motor, stepping drive, power supply and controller
(pulse generator). A typical connection is shown as figure 10.

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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
asfollowing diagram:
Figure 11: Sequence chart of control signals
Remark :
a)t1: ENA must be ahead of DIR by at least 5s. Usually, ENA+ and ENA- are NC (not connected). See
“Connector P1 Configurations” for more information.
b)t2: DIR must be ahead of PUL effective edge by 5s to ensure correct direction;

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c)t3: Pulse width not less than 2.5s;
d)t4: Low level width not less than 2.5s.
11. Protection Functions
To improve reliability, the drive incorporates some built-in protections features.
Priority
Time(s) of
Blink
Sequence wave of RED LED
Description
1st
1
0.2S
3S
Over-current Protection
2nd
2
0.2S 0.3S
3S
Over-voltage Protection
3rd
3
0.2S 0.3S
3S
Low-voltage Protection
4th
4
0.2S 0.3S
3S
Phase Error Protection
5th
5
0.2S 0.3S
3S
Over Temperature Protection
When above protections are active, the motor shaft will be free or the red LED blinks. Reset the drive by repowering
it to make it function properly after removing above problems.
12. Frequently Asked Questions
In the event that your drive 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. It is important to document each step in the troubleshooting process. You may need this
documentation to refer back to at a later date, and these details will greatly assist our Technical Support staff
in determining the problem should you need assistance.
Many of the problems that affect motion control systems can be traced to electrical noise, controller software errors,
or mistake in wiring.
Problem Symptoms and Possible Causes
Symptoms Possible Problems
No power
Microstep resolution setting is wrong

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DIP switch current setting is wrong
Fault condition exists
The drive is disabled
Motor phases may be connected in reverse
DIP switch current setting is wrong
Something wrong with motor coil
Control signal is too weak
Control signal is interfered
Wrong motor connection
Something wrong with motor coil
Current setting is too small, losing steps
Current setting is too small
Motor is undersized for the application
Acceleration is set too high
Power supply voltage too low
Inadequate heat sinking / cooling
Automatic current reduction function not being utilized
Current is set too high