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DM860A Two-phase digital stepper driver
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Overview
DM860A is a digital two-phase stepper motor driver based on DSP technology, users can set the subdivision within 400~51200 and any current value within the rated current (RMS 6.0A), which can meet the application needs of most occasions.The driver integrates the function of automatic motor parameter identification, which can identify different specifications of 57/60/86 motors and automatically generate the optimal operating parameters to maximize the performance of the motor. The motor runs smoothly, with low vibration, low noise and high output.
Characteristic
• Adopting new 32-bit DSP technology;
• Parameter auto-tuning function, ultra-low vibration noise;
• 4-digit dial code, providing 16-step subdivision selection, maximum 256 subdivisions (51200 pulses/revolution);
• Automatic halving of current at standstill;
• Optical isolation differential signal input, pulse maximum response frequency up to 300KHz;Adapts to 86 flange 4, 6, 8-wire 2-phase stepping motors.
• 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) 2.2 - 8.2 A Input Supply Voltage (DC) 18 - 160 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 -10℃-50℃ Humidity 40-90%RH Vibration 5.9m/s2 Max Storage temperature -20℃-+80℃ Weight 600g 
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 Wiring instructions for power supply and motor
Function Symbolic Mean Note Power Input AC1 AC/DC Input AC Power Input:AC18V-110V AC2 AC/DC Input DC Power Input:DC18V-160V 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 SW11 SW12 Operating (Dynamic) Current Setting
Current(peak) SW1 SW2 SW3 SW4 2.2A ON ON ON ON 2.6A OFF ON ON ON 3.0A ON OFF ON ON 3.4A OFF OFF ON ON 3.8A ON ON OFF ON 4.2A OFF ON OFF ON 4.6A ON OFF OFF ON 5.0A OFF OFF OFF ON 5.4A ON ON ON OFF 5.8A OFF ON ON OFF 6.2A ON OFF ON OFF 6.6A OFF OFF ON OFF 7.0A ON ON OFF OFF 7.4A OFF ON OFF OFF 7.8A ON OFF OFF OFF 8.2A OFF OFF OFF OFF Subdivision Settings
Steps/Rev SW5 SW6 SW7 SW8 400 ON ON ON ON 800 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 51200 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 40000 OFF OFF OFF OFF Other Parameter Settings
SW9 ON Double pulse mode CW/CCW OFF PUL+DIR mode SW10 ON Motor self-test mode, constant speed forward and reverse rotation OFF Normal reception of external pulses J10 ON PUL input pulse triggered on rising edge OFF PUL input pulse triggered on falling edge J11 ON Short pulse input filtering time OFF Long pulse input filtering time Note: J10 and J11 are implemented via PCB jumpers. When configuring, the driver casing must be opened to select using jumper caps.
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
DM860A Two-phase digital stepper driver
Still deciding? Get samples first, Contact US !
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