UCD224A102 3BHE023681R0102模块备件
频率搜索算法搜索
施加到电动机的励磁电流相对应的电动机电压。该功能适用于非常大的惯性系统，如果发生驱动跳闸，该系统需要较长时间才能停止，或者在驱动启动之前，外部源可能正在移动电机的情况。PowerFlex 700S Phase I必须为1.017或更高版本，以支持快速启动。无传感器飞行启动操作有两种模式可用于频率搜索：上次已知频率和预设频率搜索。最后已知频率最后已知频率是飞行启动的最快方法，初始搜索频率从最后已知的工作频率开始。该模式将从最后一个已知频率向零频率搜索，如果未找到电机速度，则从零速度开始。如果电机速度可能反转或增加到更大的速度，则可能发生拉出或过电压故障。如果电机速度可能发生反转或增加，则应使用预设频率搜索。
注意：
用户必须确定系统级别的安全频率搜索配置。不正确的选择可能会因机器运动而导致人身伤害。注意：快速启动功能仅用于无传感器操作。在所有其他情况下，从反馈装置知道电机速度，并且即使电机正在旋转，只要用户已经确定系统在旋转时可以安全地重新启动，也可以使用正常启动。自动化出版物PFLEXRM002DENE2013年8月63详细驱动器配置和操作第1章预设频率搜索预设频率搜索以参数451[SrLss预设Spd]中设置的值开始频率搜索。从该初始搜索频率开始，搜索将向零移动。一旦达到零频率，算法将以相同的初始频率重置到相反的方向，并再次向零搜索。如果第二次达到零，驱动器将从零速度开始。预设频率搜索例程可能需要最长时间来执行。
Frequency search algorithm search
The motor voltage corresponding to the excitation current applied to the motor. This function is applicable to very large inertial systems. If a drive trip occurs, the system will take a long time to stop, or before the drive starts, an external source may be moving the motor. PowerFlex 700S Phase I must be 1.017 or later to support quick start. Sensorless flight start operation has two modes for frequency search: last known frequency and preset frequency search. The last known frequency The last known frequency is the fastest way to start the flight, and the initial search frequency starts from the last known working frequency. This mode will search from the last known frequency to the zero frequency. If the motor speed is not found, start from the zero speed. If the motor speed may reverse or increase to a higher speed, pull out or over-voltage faults may occur. If the motor speed may reverse or increase, a preset frequency search should be used.
be careful:
The user must determine the security frequency search configuration at the system level. Incorrect selection may cause personal injury due to machine movement. Note: The quick start function is only used for sensorless operation. In all other cases, the motor speed is known from the feedback device, and even if the motor is rotating, normal starting can be used as long as the user has determined that the system can safely restart when rotating. Automation publication PFLEXRM002DENE August 63, 2013 Detailed drive configuration and operation Chapter 1 Preset frequency search Preset frequency search starts the frequency search with the value set in parameter 451 [SrLss preset Spd]. From this initial search frequency, the search will move to zero. Once the frequency reaches zero, the algorithm will reset to the opposite direction with the same initial frequency, and search to zero again. If zero is reached the second time, the drive will start at zero speed. The preset frequency search routine may take the longest time to execute.
