Stepper Motor Driver DQ420MA

Stepper Motor Driver DQ420MA

  • R 450.00
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Stepper Motor Driver DQ420MA


Stepper Motor Driver DQ420MA is a two phase hybrid stepper motor driver, it designed to get the most out of your stepper motor.  This driver can be used with motors requiring a current of up to 2.8A to run and features micro stepping up to 128.  This driver is typically used with CNC machines, 3D printers, laser cutting machines and automation machines.

Stepper Motor Driver DQ420MA Specifications


  • 2 Phase stepper driver

  • Input Voltage: 12 - 36VDC

  • Input current: <2A

  • Micro stepping: 15 options up to 128 micro stepping

  • Optional idle current reduction setting

  • Output current: 8 channel current setting

  • Opto-isolated inputs

  • Manufacturer: Wantai

  • Manufacturer product code: DQ420MA


Connection options:

With reference to the diagrams below:


  • When VCC = 5V, R = 0 (Open Connection)

  • When VCC = 12V, R = 1K (>1/8W)

  • When VCC = 24V, R = 2K (>1/8W)


dq542ma-6.jpg

Micro step resolution is set by SW 5,6,7,8 of the DIP switch as shown in the following table:
































































































SW5



OFF



ON



OFF



ON



OFF



ON



OFF



ON



OFF



ON



OFF



ON



OFF



ON



OFF



SW6



ON



OFF



OFF



ON



ON



OFF



OFF



ON



ON



OFF



OFF



ON



ON



OFF



OFF



SW7



ON



ON



ON



OFF



OFF



OFF



OFF



ON



ON



ON



ON



OFF



OFF



OFF



OFF



SW8



ON



ON



ON



ON



ON



ON



ON



OFF



OFF



OFF



OFF



OFF



OFF



OFF



OFF



PULSE/REV



400



800



1600



3200



6400



12800



25600



1000



2000



4000



5000



8000



10000



20000



25000




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.

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



































































SW1 SW2 SW3 PEAK RMS
ON ON ON 0.44 A 0.31 A
OFF ON ON 0.62 A 0.44 A
ON OFF ON 0.74 A 0.52 A
OFF OFF ON 0.86 A 0.61 A
ON ON OFF 1.46 A 1.03 A
OFF ON OFF 1.69 A 1.20 A
ON OFF OFF 2.14 A 1.51 A
OFF OFF OFF 2.83 A 2.00 A

Semi-flow function:

Semi-flow function is that there is not step pulse after 500 ms, the driver output current automatically reduced to 70% of rated output current, which is used to prevent motor heat.

Pins of motor & power:

 






























Motor and power pins

1



A+


Motor’s wiring



2



A-



3



B+



4



B-



5,6



DC+


DC-


Power supply Power supply :DC12-36VDC

The peak input current cannot be up to 2A



 

 

The driver & 2-phase hybrid stepping motor use four-wire connection, the motor can be connected in parallel & series bipolar. As for bipolar connection, it is higher performance with high-speed, but the current of driver is larger (it is 1.73 times more than the motor’s winding current).  Connecting in series, the driver’s current is equal to the motor winding one.

Mounting

There should be 20mm of space all sides of the driver, it can’t be placed next to other heating devices and avoid dust, oil, mist, corrosive gas, humidity and strong vibration areas.

Physical Dimensions:

dq420ma-7.jpg

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.

2) Trouble shooting


























































Alarm indicator Reasons Measures
LED off turn Wrong connection for power Check wiring of power
Low-voltages for power Enlarge voltage of power
Motor doesn’t run, without holding torque Wrong connection of stepper motor Correct its wiring
RESET signal is  effective when offline Make RESET ineffective
Motor doesn’t run, but maintains holding torque Without input pulse signal Adjust PMW & signal level
Motor runs wrong direction Wrong wires’ connection

Change connection for any of 2 wires


Wrong input direction signal Change direction setting
Motor’s holding torque is too small Too small relative to current setting Correct rated current setting
Acceleration is too fast Reduce the acceleration
Motor stalls Rule out mechanical failure
Driver does not match with the motor Change a suitable driver