Stepper motor driver SMD-2.8DIN
|Voltage||12 - 24VDC|
|Max. current per phase||1.3 … 2.8 A|
|Microstepping||1/1 - 1/256|
The driver is intended for small size stepper motors with current per phase up to 2.8 A. The control method is standard STEP/DIR. The driver provides smooth and exact positioning. Holding motor current can be reduced in order to make lower heating and energy save, this function can be switched on or off by a customer.
|High voltage level||5 - 12 VDC|
|Low voltage level||0 - 1 VDC|
|Input STEP resistance||3 kOhm, no less|
|Inputs DIR and ENABLE resistance||1 kOhm, no less|
|Input current of control input STEP||1,4 - 4 mA|
|Input current of control inputs DIR и ENABLE||4 - 12 mA|
|Signal type||opto-coupler output|
|Maximum voltage||48 VDC|
|Maximum load current||50 mA|
|Resistance at close contact||100 Ohm, no more|
The «FAULT» output signal is designed to monitor the state of the driver and allows you to track the occurrence of abnormal situations during operation. In the event of an emergency, the resistance between the FAULT terminals tends to infinity.
- Signal type — optocoupler output
- Maximum voltage — 48 VDC
- Maximum load — 50 mA
- Resistance of closed contacts in normal operation mode — no more than 100 Ohm
Dimensions of SMD-2.8DIN
Connection of the stepper motor driver SMD-2.8DIN
The driver is controlled by standard signals STEP, DIR and ENABLE. The motor motion is allowedwhen a signal is present at the «ENABLE» input (this signal can be inversed if needed). Displacement of a stepper motor by one step or microstep is carried out along the edge of the «STEP» signal, in the direction specified by the «DIRECTION» signal. Setting the maximum current of the motor phases and the microstepping mode is carried out by microswitches located on the front panel of the driver
The stepper motor driver can be connected to a PNP or NPN open collector logic signal source. High-level voltage signals 5‑12 V can be used without additional connections. 24 VDC control signals can be applied using a 3 kΩ current-limiting resistor.
An example of a driver connection diagram with a source of logic signals of the open collector type (common anode).
An example of a driver connection diagram with a source of logic signals of the open collector type (common cathode).