DQ860MA is a type of two-phase hybrid stepping motor driver, The drive voltage of which is from 24VDC to 80VDC. It is designed for use with 2-phase hybrid stepper motor of all kinds with 57mm to 110mm outside diameter and less than 7.8A phase current. This circuit that it adopts is similar to the circuit of servo control which enables the motor running smoothly almost without noise and vibration. Holding torque when DQ860MA runs under high speed, is also significantly higher than the other two-phase driver, what’s more, the positioning accuracy is also higher. It is widely used in middle and big size numerical control devices such as curving machine, CNC machine, and computer embroider machine, packing machines and so on.
l High performance, low price
l Average current control, 2-phase sinusoidal output current drive
l Supply voltage from 24VDC to 80VDC
l Opto-isolated signal I/O
l Overvoltage, under voltage, over-current, phase short circuit protection
l 14 channels subdivision and automatic idle-current reduction
l 8 channels output phase current setting
l Offline command input terminal
l Motor torque is related to speed, but not related to step/revolution
l High start speed
l High holding torque under high speed
7.8AConsumptionConsumption： Internal Insurance：
45℃；Stocking temperature -40℃～
Pins assignments and description:
1) Connector Pins Configurations
DIR+,DIR-DIR signal: DIR+ is the positive end of direction input pin DIR- is the negative end of direction input pinENBL+
2) Pins wiring diagram:
PC’s control signals can be active in high and low electrical level. When the high electrical level is active, all control negative signals will be connected together to GND. When low electrical level is active, all control positive signals will be connected together to public port. Now give two examples( Open collector &PNP), please check them:
Fig 1. Input port circuit (Yang connection)
PC open connector output
Fig. 2 Input port circuit ( Yin connection)
PC PNP output
Note: When VCC=5V, R=0
When VCC=12V, R=1K, ＞1/8W
When VCC=24V, R=2K,＞1/8W
R must connect in the control signal part .
3.Function choice ( Using DIP pins to achieve this function)
1) Micro step resolution is set by SW 5,6,7,8 of the DIP switch as shown in the following table:
2) 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 is set to be the same as the selected dynamic current.
3) Output current setting:
The first three bits (SW 1, 2, 3)of the DIP switch are used to set the dynamic current. Select a setting
Closest to your motor’s required current
4) Semi-flow function:
Semi-flow function is that there is not step pulse after200 ms, the driver output current automatically reduced to 40% of rated output current, which is used to prevent motor heat.
4. Pins of motor & power:
2A-3B+4B-5,6DC+ DC-Power supplyPower supply ：
5. Mechanical Specification:
To have 20mm of space around ,cannot be placed next to other heating devices. What’s more, avoid dust, oil mist, corrosive gas, heavy humidity and high vibration. (Unit=mm)
6. Adjustment of troubleshooting
1) , the status on light’s indication
PWR: green, normal work light.
ALM: red, failure light, the motor with phase short-circuit, overvoltage and under-voltage protection.
ReasonsMeasuresLED off turnWrong connection for power Check wiring of power Low-voltages for power Enlarge voltage of powerMotor doesn’t run, without holding torque Wrong connection of stepper motorCorrect its wiringRESET signal is effective when offlineMake RESET ineffectiveMotor doesn’t run, but maintains holding torqueWithout input pulse signal Adjust PMW & signal levelMotor runs wrong directionWrong wires’ connection Change connection for any of 2 wiresWrong input direction signalChange direction settingMotor’s holding torque is too smallToo small relative to current settingCorrect rated current settingAcceleration is too fastReduce the accelerationMotor stallsRule out mechanical failureDriver does not match with the motor Change a suitable driver<span style="font-size:8.5pt;font-family:"color:#111111;">
7. Driver wiring
A complete stepper motor control system should contain stepper drives, DC power supply and controller (pulse source). The following is a typical system wiring diagram
Twelve Month Limited Warranty
WANTAI MOTOR. warrants its products against defects in materials and workmanship for a period of 12 months from shipment out of factory .During the warranty period, WANTAI MOTOR will either ,at is option, repair or replace products which proved to be defective.
The above warranty does not extend to any product damaged by reasons of improper or inadequate handlings by customer, improper or inadequate customer wirings, unauthorized modification or misuse .or operation beyond the electrical specifications of the product and/or operation beyond environmental specifications for the product.
10. Obtaining Warranty Service
To obtain warranty service, a returned material authorization number(RMA)must be obtained from customer service at e-mail:
firstname.lastname@example.org. Before returning product for service. Customer shall prepay shipping charges for products returned to WANTAI MOTOR for warranty service, and WANTAI MOTOR shall pay for return of products to customer.
11. Warranty Limitations
WANTAI MOTOR makes no other warranty, either expressed or implied, with respect to the product. WANTAI MOTOR specifically disclaims the implied warranties of merchantability and fitness for a particular purpose. Some jurisdictions do not allow limitations on how long and implied warranty lasts .so the above limitation or exclusion may to apply to you, however, any implied warranty of merchantability or fitness is limited to the12-month duration of this written warranty.