E251 Motor Overtemperature Warning电机过热警告
Description:说明：
As soon as the temperwature warning threshold (145°C) is exceeded,
warnig E251 is generated and the drive complies with the command
value.一旦超过温度警告阈值（145°C），warnig E251生成，驱动器符合命令价值
This state can last infinitely without a powering down occurring.
这种状态可以无限持续，而不会发生断电。
Not until the temperature error threshold is exceeded will an immediate powering down take place.
直到超过温度误差阈值，才会立即断电。
See also F219 Motor Overtemperature Shutdown
另请参阅F219电机过热停机

Cause:原因：
The motor became overloaded.
电动机过载了。
The effective torque required of the motor was above the allowable standstill continuous torque for too long.
电机所需的有效扭矩超过允许的静止连续扭矩太长时间。

Remedy:解决措施：
Check the installation of the motor.
检查电机的安装情况。
For systems which have been in use for a long time, check to see if the drive conditions have changed (inregards to pollution, friction, components which have been moved, etc).对于长期使用的系统，检查驱动条件是否发生了变化（导致污染、摩擦、部件移动等）。

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