SKYSMotor 3DM2283T Manuale utente

User’s Ma

For

3DM2283T

Fully Digital Stepper

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Full Digital Stepper Drive 3DM2283T

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

6. Power Supply Selection............................................................................................................................................... 5

7. Selecting Microstep Resolution and Drive Output Current.........................................................................................5

Microstep Resolution Selection............................................................................................................................... 5

Current Settings....................................................................................................................................................... 6

Dynamic Current Setting......................................................................................................................................... 6

Standstill Current Setting.........................................................................................................................................6

Motor auto-identification and parameter auto-configuration.................................................................................. 6

8. Wiring Notes................................................................................................................................................................6

9. Typical Connection......................................................................................................................................................7

10. Sequence Chart of Control Signals............................................................................................................................7

11. Protection Functions.................................................................................................................................................. 8

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Full Digital Stepper Drive 3DM2283T

12. Frequently Asked Questions......................................................................................................................................9

Problem Symptoms and Possible Causes................................................................................................................ 9

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Full Digital Stepper Drive 3DM2283T

1. Introduction, Features and Applications

Introduction

The 3 DM2283T 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, 3DM2283T can drive a stepper

motor at much lower noise, lower heating, and smoother movement. Its unique features make 3DM2283T 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 200 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 2.1A to 11.7A. 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 3-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 42. 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 2.1 - 11.7 A

Input Voltage 176 220 253 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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Full Digital Stepper Drive 3DM2283T

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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Full Digital Stepper Drive 3DM2283T

3. Pin Assignment and Description

The 3DM2283T 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-

Pulse signal: 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 3DM2283T goes into error.

FAULT-

Connector P2 Configurations

Pin Function

Details

Recommend connect this port to the ground for better safety.

Power supply inputs. If AC input, recommend use isolation transformers with theoretical output

voltage of 176~253VAC.

No Connection

Motor Phase U

Motor Phase V

Motor Phase W

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Full Digital Stepper Drive 3DM2283T

RS232 Communication Port

The RS232 communication port is used to configure the 3DM2283T’s peak current, microstep, active level, current loop

parameters and anti-resonance parameters.

RS232 Communication Port – RJ11

Name

I/O

Description

Not connected.

+5V

+5V power output.

TxD

RS232 transmit.

GND

Ground.

RxD

RS232 receive.

Not connected.

4. Control Signal Connector (P1) Interface

The 3DM2283T can accept differential and single-ended inputs (including open-collector and PNP output). The

3DM2283T 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.

lle

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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Full Digital Stepper Drive 3DM2283T

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 3-phase hybrid stepping motors with 3-wires or 6-wires,1.2°step-angle.

6. Power Supply Selection

The power supply voltage can work normally between the voltage range specified by the driver. The 3DM2283T 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.

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:

Steps/rev. SW5 SW6 SW7 SW8

200

ON ON ON ON

400

OFF ON ON ON

1600

ON OFF ON ON

3200

OFF OFF ON ON

6400

ON ON OFF ON

12800

OFF ON OFF ON

25600

ON OFF OFF ON

500

OFF OFF OFF ON

1000

ON ON ON OFF

1200

OFF ON ON OFF

2000

ON OFF ON OFF

4000

OFF OFF ON OFF

5000

ON ON OFF OFF

6000

OFF ON OFF OFF

8000

ON OFF OFF OFF

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Full Digital Stepper Drive 3DM2283T

OFF OFF OFF OFF

10000

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.

Dynamic Current Setting

Peak Current RMS Current SW1 SW2 SW3

Default Default

3.1A 2.2A

4.5A 3.2A

5.9A 4.2A

7.3A 5.2A

8.9A 6.3A

10.1A 7.2A

11.7A 8.3A

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

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Full Digital Stepper Drive 3DM2283T

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.

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:

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