PlanetCNC DM556 Digital Stepper Motor Driver User Manual

**PlanetCNC DM556 Digital Stepper Motor Driver User Manual

**

Disclaimer

MOTOR DRIVER DM566 IS PROVIDED TO YOU “AS IS,” WITHOUT WARRANTY. THERE IS NO WARRANTY FOR THE MOTOR DRIVER, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE DEVICES IS WITH YOU. SHOULD THE HEIGHT SENSOR OR HEIGHT CONTROLLER PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.

IN NO EVENT SHALL THE AUTHOR BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE MOTOR DRIVER DM566

Introduction

Overview

The DM556 is a digital stepper drive with simple design and easy setup. By implementing 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 20-50VDC and it can output up to 5.6A current. Microstep and output electrical current configuration is done via DIP switches.

Therefore, the DM556T are ideal choices for applications requiring simple step & direction control of NEMA 23, 24 and 34 stepper motors.

Features and specifications

• 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
• TTL compatible and optically isolated inputs
• Input voltage 20-50VDC
• 16 selectable micro-step resolutions of 400-25,600 via DIP switches
• 8 selectable output current settings of 1.8 – 5.6A via DIP switches
• Soft-start with no “jump” when powered on
• Pulse input frequency up to 200 KHz.
• Automatic idle-current reduction
• Protections for over-voltage and over-current

Control signals connector

• STEP & DIRECTION signal inputs
• Enable signal input
• All inputs are optically isolated and TTL compatible

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 is for DIR and ENA signals).
PUL-
DIR+| DIR(DIRECTION) 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.
DIR-
ENA+| Enable signal: This signal is used for enabling/disabling the drive. High level +5V for enabling the drive and low level for disabling the drive.By default it is left UNCONNECTED (ENABLED).
ENA-

DIP switch

• Drive uses an 8-bit DIP switch to set micro-step resolution and motor operating current
• Microstep resolution is set by SW 5, 6, 7, 8 of the DIP switches
• Operating electrical current is set by SW 1, 2, 3 of the DIP switches
• Motor idle current percentage is set by SW 4 of the DIP switches

Microstep Resolution Configurations

Current Configurations

Motor idle current configurations:

SW4 is used to set motor idle current percentage. At OFF position it means the standstill current is set to be 50%of the selected output current.

At ON position it means standstill current is set to be the same as the selected dynamic current.

The current automatically reduced to 50% of the selected dynamic current 0.4 second after the last pulse.

Protection Functions

There are two LED lights on the driver.

• 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 is enabled.

Different number of flashes indicates different protection type.

activated when peak current exceeds the limit
2st| 2| | Over-voltage protection activated when drive working voltage is greater than 60VDC
3rd| 3| | Reserved

Power and motor connector

Power connector:
Driver is designed to operate within +20 – +50VDC 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 range of +24 – +48 VDC, 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.

Motor Connector:
Driver can drive 2-phase and 4-phase bipolar hybrid stepper motors with 4, 6, or 8 wires.

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

Connection diagrams

Connection of Controller, stepper driver, stepper motor and power supply:

Stepper motor and stepper driver connections:

Connections of 4-lead Motor
4-lead Motor Connections:

Connections of 6-lead Motor
6-lead motor half coil 1 (higherspeed) connections:

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

Connections of 8-lead Motor
8-lead motor series connections: 1

8-lead motor parallel connections:

Motor driver adapter board

Motor driver DM566 includes also adapter board for easier connection of motion controller’s axis output with the stepper driver’s control signal connector. 10Pin ribbon cable is also included

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