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Hybird Stepper/Stepping motor driver DQ420MA

Inquiry
  Post Date: Jun 17,2015
  Expiry Date: Jun 16,2016
  Detailed Description: Cas No. :DQ420MA Quantity: 10000
Payment Method: PP/TT
Stepper Motor Driver DQ420MA
Introduction:
DQ420MA is a type of two-phase hybrid stepping motor driver, The drive voltage of which is from
12VDC to 36VDC. It is designed for use with 2-phase hybrid stepper motor of all kinds with 20mm
to 42mm outside diameter and less than 2.0A phase current. This circuit that it adopts is similar to
the circuit of servo control which enables the motor to run smoothly almost without noise and vibration.
Holding torque when DM420A rund at high speed is also significantly higher than the other two-phase
drivers, 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.

Features:
l High performance, low price
l Average current control, 2-phase sinusoidal output current drive
l Supply voltage from 12VDC to 36VDC
l Opto-isolated signal I/O
l Overvoltage, under voltage, overcurrect, phase short circuit protection
l 8 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 at high speed


Electrical specification:

Input voltage 12-36VDC
Input current ＜ 2A
Output current 0.44A- 2.83A
Consumption Consumption：40W；
Temperature Working Temperature -10～45℃；
Stocking temperature -40℃～70℃
Humidity Not condensation, no water droplets
gas Prohibition of combustible gases and conductive dust
weight 70G


Pins assignments and description:

1) Connector Pins Configurations

Pin Function Details
PUL +,PUL- Pulse signal, PUL+ is the positive end of pulses input pin
PUL- is the negative end of pulse input pin

DIR+,DIR- DIR signal: DIR+ is the positive end of direction input pin
DIR- is the negative end of direction input pin
ENBL+
Enable signal: ENBL+ is the positive end of direction input pin. This signal is used for enabling/disabling the driver. High level for enabling the driver and low level for disabling the driver.
ENBL- ENBL- is the negative end of direction input pin. Usually left unconnected (enabled)

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:


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:

SW5 ON OFF ON OFF ON OFF ON OFF
SW6 ON ON OFF OFF ON ON OFF OFF
SW7 ON ON ON ON OFF OFF OFF OFF
Pulse/rev 200 400 800 1600 3200 6400 12800 25600
Micro 1 2 4 8 16 32 64 128
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
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

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:

Motor and power pins 1 A+ Motors 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
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.

2) Troubles

Alarm indicator Reasons Measures
LED off turn 1)Wrong connection for power Check wiring of power
2)Low-voltages for power Enlarge voltage of power

Motor doesn’t run, without holding torque 1)Wrong connection of stepper motor Correct its wiring
2)RESET signal is effective when offline Make RESET ineffective
Motor doesn’t run, but maintains holding torque 1)Without input pulse signal Adjust PMW & signal level
Motor runs wrong direction 1)Wrong wires’ connection Change connection for any of 2 wires
2)Wrong input direction signal Change direction setting
Motor’s holding torque is too small 1)Too small relative to current setting Correct rated current setting
2)Acceleration is too fast Reduce the acceleration
3)Motor stalls Rule out mechanical failure
4)Driver does not match with the motor Change a suitable driver

  CAS Registry Number:

DQ420MA

  Company: Changzhou wantai Electrical Appliance Co., Ltd     [ China ]        
  Contact: Susanna
  Tel: 0086-519-85138377
  Fax: 0086-519-85139178
  Email: sales@wantmotor.com
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