Stepper Motor Driver DQ542MA

Product No.: N201142191639


 

 Introduction:

DQ542MA is a two-phase hybrid stepping motor driver. The drive voltage is from 18Vdc to 50Vdc. It is designed for use with 2-phase hybrid stepper motor of all kinds including 42mm to 86mm outside diameter and less than 4.0A phase current. This circuit that it adopts is similar to the circuit of servo control which enables the motor run smoothly almost without noise and vibration. holding torque when DM542A run under high speed is also significantly higher than the other two-phase driver, what is 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 etc.
 
Features:
  •   High performance
  •   Low price
  •   Average current control, 2-phase sinusoidal output current drive
  •   Supply voltage from 18VDC to 50VDC
  •   Opto-isolated signal I/O
  •   Over-voltage, under voltage, overcorrect, phase short circuit protection
  •   15 channels subdivision and automatic idle-current reduction
  •   8 channels output phase current setting
  •   Offline command input terminal
  •   Motor torque is related with speed, but not related with step/revolution
  •   High start speed
  •   High holding torque under high speed
 
Electrical specification:
Input voltage
18~50VDC
Input current
4A
Output current
1.0A ~ 4.2A
Consumption
Consumption 80W (max safety 6A)
Temperature
Working Temperature -10 to +45degC
Storage temperature -40 to +70degC
Humidity
Non-condensation, no water droplets
Gas
Prohibition of combustible gases and conductive dust
Weight
300G
 
 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) Pin wiring diagram:
PCs control signals can be active in high or 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 collector 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 port .
 
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
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
 
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 

Output current (A)
SW1
SW2
SW3
PEAK
RMS
ON
ON
ON
1.00
0.71
OFF
ON
ON
1.46
1.04
ON
OFF
ON
1.91
1.36
OFF
OFF
ON
2.37
1.69
ON
ON
OFF
2.84
2.03
OFF
ON
OFF
3.31
2.36
ON
OFF
OFF
3.76
2.69
OFF
OFF
OFF
4.20
3.00
 
4) 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.
 
 
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 £ºDC18-50VDC
5. Mechanical Specification:
To have 20mm of space around, cannot be placed next to other heating devices. Whats more,  avoid dust, oil mist, corrosive gas, heavy humidity and high vibration.

 

 

 

 

 
6. Adjustment of troubleshooting

1) , the status on lights indication
PWR: green, normal work light.
ALM: red, failure light, the motor with phase short-circuit, over-voltage and under-voltage  protection.

2) Troubles

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
 
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
8. APPENDIX
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.
 
 Exclusions
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.
 
Obtaining Warranty Service
To obtain warranty service, a returned material authorization number (RMA) must be obtained from customer service at e-mail: sales@wantmotor.com.
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.
 
 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.