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Applications
It can be applied in a variety of small scale automation equipment and instruments, such as labeling machine, cutting machine, packing machine, drawing machine, engraving machine, CNC machine and so on. It always performs well when it is used in equipment which requires for low-vibration, low-noise, high-precision and high-velocity.

The M660A is a new generation microstep stepper motor driver which applies original imported chips. Due to the adoption of the advanced bipolar constant-current chopper driver technology, it shows stable operation, provides excellent high torque. Moreover, it significantly reduces the noises and vibration of the operating motor. The M660A has the feature of low-noise, low-vibration and low-heating. The M660A is AC24-60V power supply. It applies to 2-phase hybrid stepper motor under 6.0A current. The M660A has 14 kinds of microsteps. The maximum step number is 51200 steps/rev (microstep is 1/256). The peak operating current ranges 2.0-6.0A., and the output current has 8 stalls. The M660A has automatic semi-flow, self-test, over-voltage, under-voltage, over-current protection functions.
Signal interface details:
The internal interface circuits of the driver are isolated by the opt coupler signals, R in the figure is an external current limiting resistor. The connection is differential. And it has a good anti-jamming performance.
common cathode connection
common anode connection
Control signal and external interface:
Signal amplitudes | External current limiting resistor R |
5V | Without R |
12V | 680Ω |
24V | 1.8KΩ |
Common indicator
Phenomenon | Reason | Solution |
The red indicator is on. | 1. A short circuit of motor wires. | Inspect or change wires |
2. The external voltage is over or low than the driver’s working voltage. | Adjust the voltage to a reasonable rang | |
3. Unknown reason | Return the goods |
Outline and installation size (unit:mm)