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DMA860 Two-phase digital stepper driver
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Overview
DMA860 is a new generation of high-performance two-phase digital stepping driver based on 32-bit DSP technology developed by our company, driving voltage AC18-80V, adaptable current 6.5A or less, OD 57~86mm two-phase hybrid stepping motor of various models.
The driver samples servo-like control principle, unique circuit design, superior software algorithm processing, so that the motor can run smoothly even in low subdivision, almost no vibration and noise, smooth, accurate current control technology greatly reduces the motor heating, external 16-stage constant torque subdivision at the same angle, the highest subdivision 25600 pulses/revolution, optocoupler isolation differential signal input, anti-disturbance ability, over-voltage, under-voltage, over-torque, over-voltage, over-torque, over-voltage, under-torque, under-torque, under-torque, and over-torque. With over-voltage, under-voltage, over-current protection and other error protection functions. In the dispenser, laser engraving and other medium and low-speed application areas, its smooth parts, vibration, noise parts can be obvious advantages, can greatly improve the performance of the equipment.
Characteristic
• Adopting new 32-bit DSP technology;
• Parameter auto-tuning function, ultra-low vibration noise;
• 4-bit dial code, providing 16-step subdivision selection, the highest subdivision 25600 pulses/revolution;
• Automatic halving of current at standstill;
• Optical isolation differential signal input, the highest pulse response frequency up to 300KHz;Adapts to 4, 6 and 8-wire 2-phase stepper motors for 86 flanges.
• Can drive 4, 6, 8-wire two-phase stepper motors;
• The current is easy to set and can be selected arbitrarily between 2.4-7.2 (peak);
• With over-voltage, over-current, overheating and other protection functions;
• Voltage input range:AC18V-80V/DC24-110V;Performance indicators
Electrical indicators
Describe DM865V Min. values Typical values Max.values Unit Output Current (Peak) 2.8 - 6.5 A Input Supply Voltage (DC) 18 - 80 VAC Input Supply Voltage (AC) +24 - +110 AC Logic Input Current 7 10 20 mA Pulse Frequency 0 - 200 kHz Insulation Resistance 500 - MΩ Environmental indicators
Cooling method Self-contained cooling fan to dissipate heat
(Fan starts working when heat sink temperature exceeds 40℃)Operating environment Occasions for use Avoid dust, oil mist and corrosive gases as much as possible Temp -20℃-50℃ Humidity 40-90%RH Vibration 5.9m/s2 Max Storage temperature -20℃-+80℃ Weight 0.3kg 
Control signal wiring instructions
Function Symbolic Mean Note Pulse Signal PUL+ Start/stop signal positive Default pulse is valid on the falling edge; pulse width should be greater than 1.2μs for reliable response to pulse signals Input voltage range: 3.3~28V. PUL- Start/stop signal negative Direction Signal DIR+ Direction signal positive The motor's rotation direction depends on the DIR signal. When the DIR signal is floating or at a low level, the motor rotates clockwise; when the DIR signal is high, the motor rotates counterclockwise. To ensure reliable motor direction switching, the direction signal should be established at least 5μs before the pulse signal. The motor's initial running direction is related to the motor winding connections; swapping any winding pair (such as A+and A-) can change the motor's initial running direction.Input voltage range: 3.3V~28V. DIR- Direction signal negative Enable Signal EN+ Enable signal positive Enable control signal: This input signal is used to enable or disable the driver output.When ENA is at a low level (or the internal optocoupler is conducting), the driver cuts off the current to all motor phases, putting the motor in a free state and ignoring step pulses.If this function is not needed, simply leave the enable signal terminal floating.Input voltage range: 3.3~28V. EN- Enable Signal Negative Alarm Signal ALM+ Alarm Signal Positive Output It can be changed to a position signal and a brake signal through the host computer software. ALM- Alarm Signal Negative Output Wiring instructions for power supply and motor
Function Symbolic Mean Note Power Input AC1 AC/DC Input AC Power Input: AC18V-80V AC2 AC/DC Input DC Power Input: DC18V-80V Motor Wiring A+ Stepper Motor Phase A Winding Swapping either the A+ and A- winding connections or the B+and B-winding connections can change the motor's initial running direction. A- B+ Stepper Motor Phase B Winding B- Current and microstepping configuration
An 8-bit DIP switch is used to set the subdivision, operating current, and holding current in the static state. Detailed descriptions are as follows:(The locked rotor holding current can be internally jumper-set to full current, with a default of 50%.)
Current Settings SW1 SW2 SW3 SW4 Subdivision Settings SW5 SW6 SW7 SW8 Other Parameter Settings SW9 SW10 Current Settings
Current(peak) SW1 SW2 SW3 SW4 6.5A ON ON ON ON 6.2A OFF ON ON ON 6.0A ON OFF ON ON 5.8A OFF OFF ON ON 5.5A ON ON OFF ON 5.5A OFF ON OFF ON 5.0A ON OFF OFF ON 4.8A OFF OFF OFF ON 4.5A ON ON ON OFF 4.2A OFF ON ON OFF 4.0A ON OFF ON OFF 3.8A OFF OFF ON OFF 3.5A ON ON OFF OFF 3.2A OFF ON OFF OFF 3.0A ON OFF OFF OFF 2.8A OFF OFF OFF OFF Subdivision Settings
Speed(RPM) SW5 SW6 SW7 SW8 200 ON ON ON ON 400 OFF ON ON ON 800 ON OFF ON ON 1600 OFF OFF ON ON 3200 ON ON OFF ON 6400 OFF ON OFF ON 12800 ON OFF OFF ON 25600 OFF OFF OFF ON 1000 ON ON ON OFF 2000 OFF ON ON OFF 4000 ON OFF ON OFF 5000 OFF OFF ON OFF 8000 ON ON OFF OFF 10000 OFF ON OFF OFF 20000 ON OFF OFF OFF 25000 OFF OFF OFF OFF Other Parameter Settings
SW9 ON Pulse+Pulse (Dual Pulse) OFF Pulse+DIR (Pulse+Direction) SW10 ON Full current OFF Half current Driver status LED indicator
LED codes ERROR ● Green light always on Motor running ●● Green light flashing Motor stopped ●● One red, one green Driver overcurrent ●●● Two red and one green Motor winding open circuit ●●●● Three red and one green Driver input overvoltage ●●●●● Four red and one green Driver input undervoltage ●●●●●● Five red and one green Others
DMA860 Two-phase digital stepper driver
Still deciding? Get samples first, Contact US !
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