5R42 五相步进驱动器
5R42基于TI公司32位DSP平台，可以全面发挥五相步进电机低速共振小、转矩脉动小，精度高的特性。
电机运行电流设置 SW1、SW2、SW3
5R42由3位拨码开关设置8档电机电流，请用户根据电机额定电流及负载状况，设置适当的电流
三角形接法时，电机线电流 = 相电流 × 1.732
| 线峰值电流（A） | 相电流峰值（A） | SW1 | SW2 | SW3 |
|---|---|---|---|---|
| 0.3 | 0.2 | ON | ON | ON |
| 0.5 | 0.3 | OFF | ON | ON |
| 0.7 | 0.5 | ON | OFF | ON |
| 1.0 | 0.7 | OFF | OFF | ON |
| 1.3 | 1.0 | ON | ON | OFF |
| 1.6 | 1.2 | OFF | ON | OFF |
| 1.9 | 1.4 | ON | OFF | OFF |
| 2.2 | 1.6 | OFF | OFF | OFF |
电机方向设定 SW4
| 电机方向设定 | SW4状态 |
|---|---|
| 电机顺时针方向转CW | OFF |
| 电机逆时针方向转CCW | ON |
细分设置 SW5、SW6、SW7、SW8
5R42由4位拨码开关设置16档电机运行一转所需的脉冲数，步进驱动器通常进行电流细分，电机的定位精度由电流细分精度及电机本身决定。
细分设置
| 步数/转 | SW5 | SW6 | SW7 | SW8 |
|---|---|---|---|---|
| 500 | ON | ON | ON | ON |
| 1000 | OFF | ON | ON | ON |
| 1250 | ON | OFF | ON | ON |
| 2000 | OFF | OFF | ON | ON |
| 2500 | ON | ON | OFF | ON |
| 4000 | OFF | ON | OFF | ON |
| 5000 | ON | OFF | OFF | ON |
| 10000 | OFF | OFF | OFF | ON |
| 12500 | ON | ON | ON | OFF |
| 20000 | OFF | ON | ON | OFF |
| 25000 | ON | OFF | ON | OFF |
| 40000 | OFF | OFF | ON | OFF |
| 50000 | ON | ON | OFF | OFF |
| 62500 | OFF | ON | OFF | OFF |
| 100000 | ON | OFF | OFF | OFF |
| 125000 | OFF | OFF | OFF | OFF |
数据手册
