3 phase stepper motor driver SH30822M
Based on the original stepping motor driver, we developed the 30822M type stepping motor driver. This driver owns many advantages such as low noise, high efficiency, Lower temperature rise, convenient settings, nice running characteristic and so on.
wiring diagrams of motors:
There are two connecting modes of the motor.
1. delta-connection
2. Y-connection
Warning:Motor's wires mustn't be connected wrongly, Otherwise, the driver will be mangled.
Input signals
The inner interface circuits of the SH30822M are segregated by optically coupled isolators.
There are three connecting mode between the controller and the driver.
i. Differential ii. Common-anode
DIR: Input port of the direction signal. High/low level controls the CW/CCW of motor. The changing edge of the signal must be at least 2.5us later or earlier than the falling edge of CP;
FREE: Free signal (active low). when this input end is low level,there will be no holding torque of the motor.
CP: Pulse signal input. active by the falling edge,the highest response frequency can be 200kHz,low level pulse width should be not less than 2.5us.
RDY: A contact of the inner relay, just like a switch. It is ON when the driver is normal when the power turned on. It is OFF if the driver is abnormal.
G: Input signal must have enough current, (Currently, TTL, COMS signal are not drive firsthand). Otherwise, System can not run normally.
Current and subdivision number setting:
Switch is adopted to set phase current and subdivision number in SH30822M driver. There-into, Switch 5 is half phase-current (ON means full current, OFF means half), switch 6 is the setting of single or double pulse (ON show single pulse CP, DIR; OFF show double pulse CW, CCW). See Table2,Table3.After the subdivision of driver is set, the step angle in motor is equal to whole step angle divided by subdivision number. For example:if subdivision number is set to 18,its subdivision step angle is 1.8°/18=0.1°.
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