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
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. Power connections
(1)+V、GND：Power Supply.
+V: Power supply, 16~50 VDC, Including voltage fluctuation and EMF voltage. The max
current is 5A.
(2) A+ A- B+ B-：Connecting 2 phase stepper motors.
The driver & 2-phase hybrid stepping motor use four-wire connection, the motor can be
connected in parallel & series bipolar. As for bipolar connection, it is higher performance with
high-speed, but the current of driver is larger (it is 1.73 times more than the motor’s winding
current).
Connecting in series, the driver’s current is equal to the motor winding one.
5. Fixing
There should be 20mm of space, it can’t be placed next to other heating devices, to avoid
dust, oil mist, corrosive gas, humidity and strong vibration places.
(Unit=mm)
