Microrostep DM860 User Manual
User’s Manual
For
DM860
Fully Digital Stepper Drive
Contents
Table of Contents
1. Introduction, Features and Applications .......................................................................................................................1
Introduction ..............................................................................................................................................................1
Features.....................................................................................................................................................................1
Applications..............................................................................................................................................................1
2. Specifications................................................................................................................................................................1
Electrical Specifications ...........................................................................................................................................1
Operating Environment and other Specifications .....................................................................................................2
Mechanical Specifications ........................................................................................................................................2
Elimination of Heat...................................................................................................................................................2
3. Pin Assignment and Description...................................................................................................................................3
Connector P1 Configurations ...................................................................................................................................3
Selecting Active Pulse Edge or Active Level and Control Signal Mode ..................................................................3
Connector P2 Configurations ...................................................................................................................................4
4. Control Signal Connector (P1) Interface ......................................................................................................................4
5. Connecting the Motor...................................................................................................................................................4
Connections to 4-lead Motors...................................................................................................................................4
Connections to 6-lead Motors...................................................................................................................................5
Half Coil Configurations ..................................................................................................................................5
Full Coil Configurations ...................................................................................................................................5
Connections to 8-lead Motors...................................................................................................................................5
Series Connections............................................................................................................................................5
Parallel Connections .........................................................................................................................................6
6. Power Supply Selection................................................................................................................................................6
Regulated or Unregulated Power Supply..................................................................................................................6
Multiple Drivers .......................................................................................................................................................6
Selecting Supply Voltage..........................................................................................................................................7
7. Selecting Microstep Resolution and Driver Output Current.........................................................................................7
Microstep Resolution Selection................................................................................................................................7
Current Settings ........................................................................................................................................................7
Dynamic Current Setting ..................................................................................................................................8
Standstill Current Setting..................................................................................................................................8
28BAuto Tuning by SW4 .........................................................................................................................................8
8. Wiring Notes.................................................................................................................................................................9
9. Typical Connection.......................................................................................................................................................9
10. Sequence Chart of Control Signals...........................................................................................................................10
11. Protection Functions .................................................................................................................................................10
12. Frequently Asked Questions .....................................................................................................................................11
Problem Symptoms and Possible Causes ...............................................................................................................11
DM860 Fully Digital Stepper Drive Manual V1.0
1. Introduction, Features and Applications
Introduction
The DM860 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.
Compared with traditional analog drives, DM860 can drive a stepper motor at much lower noise,
lower heating, and smoother movement. Its unique features make DM860 an ideal choice for high requirement
applications.
Features
Anti-Resonance provides optimal torque and nulls mid-range instability
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Multi-Stepping allows a low resolution step input to produce a higher microstep output, thus offers smoother
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motor movement
16 selectable microstep resolutions including 400, 800, 1600, 3200, 6400, 12800, 25600, 51200, 1000, 2000, 4000,
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5000, 8000, 10000, 20000, 40000
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Input voltage 24-80VDC
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8 selectable peak current including 2.40A, 3.08A, 3.77A, 4.45A, 5.14A, 5.83A, 6.52A, 7.20A
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Pulse input frequency up to 200 KHz, TTL compatible and optically isolated input
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Automatic idle-current reduction
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Suitable for 2-phase and 4-phase motors
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Over-voltage, over-current protections
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Applications
Suitable for a wide range of stepping motors, from NEMA size 17 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
Min Typical Max Unit
Output Current 1.0 - 7.2 (Peak) A
Input Voltage +24 +68 +80 VDC
Logic Signal Current 7 10 16 mA
Pulse input frequency 0 - 200 kHz
Pulse Width 2.5 - - uS
Pulse Voltage - 5 - VDC
Isolation resistance 500 MΩ
DM860
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DM860 Fully Digital Stepper Drive Manual V1.0
Operating Environment and other Specifications
Cooling Natural Cooling or Forced cooling
Environment
Ambient Temperature
Operating Environment
Humidity
Operating Temperature
Vibration
Storage Temperature -20
Weight Approx. 620g (21.7oz)
Mechanical Specifications (unit: mm [inch])
Avoid dust, oil fog and corrosive gases
0
℃ －
50℃
40%RH － 90%RH
70 Max℃
5.9m/s2 Max
65℃
℃ －
Figure 1: Mechanical specifications
*Recommend use side mounting for better heat dissipation
Elimination of Heat
Driver’s reliable working temperature should be <70℃(158℉), and motor working temperature should be
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<80℃(176℉);
It is recommended to use automatic idle-current mode, namely current automatically reduce to 50% when motor
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stops, so as to reduce driver heating and motor heating;
It is recommended to mount the driver vertically to maximize heat sink area. Use forced cooling method to cool
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the system if necessary.
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