ST-M542 2-Phase stepper motor driver features
1. Adopt advanced technology of bipolar constant current chopper;
2. Over current , over temperature inside to protect the circuit, etc;
3.14 file subdivision is adjustable, up to 256 subdivision;
4. Adapt to 42,57 series stepper motor;
5. It can support two kinds of single/double mode selection.
1、端口说明(Port instructions)：
ST-28H驱动器引脚端口说明 | |
PUL+ | 信号输入正端，接+5V |
PUL- | 脉冲信号输入端口 |
DIR+ | 信号输入正端，接+5V |
DIR- | 方向信号输入端口 |
| ENA+ | 信号输入正端，接+5V |
| ENA- | 使能输入端口 |
A+A-B+B- | 接两相混合式电机绕组 |
DC+ DC- | 输入电压直流24-40VDC |
SW1-SW3 | 驱动器电流组合设定 |
SW4 | 全流半流设定 |
| SW5-Sw8 | 驱动器细分组合设定 |
2、电流设定(Current setting)
SW1 | SW2 | SW3 | 电流（A） |
ON | ON | ON | 1.5 |
OFF | ON | ON | 2.0 |
ON | OFF | ON | 2.4 |
OFF | OFF | ON | 2.8 |
ON | ON | OFF | 3.2 |
OFF | ON | OFF | 3.7 |
ON | OFF | OFF | 4.2 |
OFF | OFFF | OFF | 4.5 |
3、细分设定(Subdivision setting(k1-k3))
SW5 | SW6 | SW7 | SW8 | 细分 |
ON | ON | ON | ON | 2 |
ON | OFF | ON | ON | 4 |
ON | ON | OFF | ON | 8 |
ON | OFF | OFF | ON | 16 |
ON | ON | ON | OFF | 32 |
ON | OFF | ON | OFF | 64 |
ON | ON | OFF | OFF | 128 |
ON | OFF | OFF | OFF | 256 |
| OFF | ON | ON | ON | 5 |
| OFF | OFF | ON | ON | 10 |
| OFF | ON | OFF | ON | 25 |
| OFF | OFF | OFF | ON | 50 |
| OFF | ON | ON | OFF | 125 |
| OFF | OFF | ON | OFF | 250 |
安装外形图：
