EN输入使能或关断驱动器的功率部分信号输入为光电隔离可接受33-28VDC单端或差分信号。EN信号悬空或低电平时光耦不导通驱动器为使能状态电机正常运转；EN信号为高电平时光耦导通驱动器功率部分关断电机无励磁。当电机处于报错状态时EN输入可用于重启驱动器。首先从应用系统中排除存在的故障然后输入一个下降沿信号至EN端驱动器可重新启动功率部分电机励磁运转。

Translation:

The EN input enables or disables the power section of the driver. The signal input is optically isolated and accepts single-ended or differential signals ranging from 3.3-28VDC. When the EN signal is floating or low (optocoupler is not conducting), the driver is in the enabled state and the motor operates normally. When the EN signal is high (optocoupler is conducting), the power section of the driver is turned off and the motor is not energized. When the motor is in an error state, the EN input can be used to restart the driver. First, troubleshoot any issues in the application system, and then input a falling edge signal to the EN terminal. The driver can restart the power section, and the motor can be energized and run again