Digital Microstep Driver DM556N
11
d. The parallel connection of 8-wire motor: the output current can be set to 1.4 times the rated
current of the motor.
Note: Please run the motor for 30-60 minutes after the current is set. If the motor temperature rises
too high (>70°C), the current setting should be reduced. Therefore, the general situation is to set the
current to a value that the motor’s temperature is warm but not too hot when the motor is working
for a long time.
7. Frequently Asked Questions
(1). Q: When using the stepper drive for the first time, how can I get started as soon as possible?
A: After the power supply and motor are properly connected, only the pulse signal is connected
(set the frequency to 1KHZ first), the microstep is set to 16, the DIR and ENA are suspended. At
this time, the motor defaults to forward after power-on. After running correctly, test the functions
of acceleration (increasing frequency), direction, microstep and ENA.
(2). Q: If the control signal voltage is higher than 5V, must I add a series resistor?
A: It is not required. This driver has been compatible with all signal voltages between 5V and 24V.
(3). Q: After the driver is working for a long time, the outer casing is hot, is it normal?
A: This is normal. Under normal temperature, the outer casing will not affect the performance
below 70°C.
(4). Q: After the wiring, the power indicator light is on, but the motor does not turn. What is the
reason?
A: If the wiring is correct (the enable signal is not connected), but still does not turn, it indicates
that the controller drive capability is not enough, please ensure that the controller has 5mA drive
capability, or check if the driver signal is a double pulse format?
(5). Q: How to judge the definition of four lines of stepper motor?
A: Connect any two wires of the motor together, at this time, there is resistance to twist the motor
shaft by hand. The two wires are in the same phase and can be connected to the driver A+ and A-.
If the other two wires are connected together, there will still be resistance. These two wires are
connected to B+ B-. Or use a multimeter to measure, the two wires that pass through each other
are the same phase, which can be connected to A+, A- or B+, B-.
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