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DQ278M
Model£ºDQ278M
Category£º2 Phase
Item£º
DQ278M is 2-phase stepper motor driver based on advanced DSP control. It is new fully digital driver configured by DSP control chip and unique circuit. The driving voltage is DC24V-80V, adapting to all models of 2-phase hybrid stepper motor whose current is below 7.0A and with 57-86mm outer diameter. The internal driver circuit is similar to that of servo control, which makes the motor run smoothly, almost no vibration and noise. The max positioning accuracy can be up to 40,000 steps/R. It is widely applied in medium/small NC equipment with high resolution like engraving machines, small CNC machine, packaging machinery and etc.
 
 
Features
 
¡ñ High performance and competitive price
¡ñ 16-channel selectable resolution, max resolution 40,000 steps/R
¡ñ Max response frequency up to 200Kpps
¡ñ Coil current will be automatically reduced to 1/2 of pre-set current when stepper pulse stops over 100ms.
¡ñ Optical isolating signals I/O
¡ñ Driving current can be adjusted from 1.2A/phase to 7.0A/phase through the 16 channels.
¡ñ Single power supply (Voltage range: DC24V-80V)
¡ñ Phase memory function (Note: The driver can memorize the motor phase automatically when the input stops over 3 seconds.  And also it can recover the phase automatically when it is re-powered or MF signals changes from low level to high level.  )     
 
Current Setting
 
The working current of the driver is set by DIP-1 terminal. For more details, please refer to the following diagram.
 
Current£¨A£©
1.2
1.5
2.0
2.3
2.5
3.0
3.2
3.6
4.0
4.5
5.0
5.3
5.8
6.2
6.5
7.0
D1
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
ON
ON
ON
ON
D2
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF
OFF
OFF
OFF
ON
ON
ON
ON
D3
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
D4
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
 
 
Micro Steps Setting
 
The micro steps of the driver are set by DIP-2 terminal with total 16 channels. They are set separately by the first 4 of the 6 DIP-switch. (The other 2 are for function setting).
Details are as below. Micro steps (pulse/R)
 
 
 
 
 
200
400
800
1000
1600
2000
3200
4000
5000
6400
8000
10000
12800
20000
25600
40000
D1
ON
ON
ON
ON
ON
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
D2
ON
ON
ON
ON
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF
OFF
OFF
OFF
D3
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
D4
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
D5
ON, double pulses: PU is CW stepper pulse signal, DR is CCW stepper pulse signal.
OFF, single pulse: PU is stepper pulse signal, DR is the direction control signal.
D6
Self-test switch (OFF: receiving external pulse  ON: the driver is running at 30 r/min internal)
 
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For more details, please contact bs@bsjd.com