702：Rotor position at synchronous machine is unknown

同步電機的轉子位置未知

The rotor position of the synchronous drive is unknown.

同步驅動器的轉子位置未知。

Either the rotor position offset or the absolute position could not be read from the encoder or the synchronous drive is used with a incremental encoder and a rotor position identification has not been executed yet.

無法從編碼器讀取轉子位置偏移或絕對位置，或者同步驅動器與增量編碼器一起使用，并且尚未執行轉子位置識別。

The error is also set if the encoder is switched off but the motor configuration needs an encoder.

如果編碼器關閉，但電機配置需要編碼器，也會設置錯誤。

Reset of the error is possible.

可以重置錯誤。

The error is set again if the cause of the error has not been corrected.

如果錯誤原因尚未糾正，則會再次設置錯誤。

羅蘭印刷機鮑米勒驅動器故障修理：

Cause: 原因：

For some encoders, the absolute position can partially no longer

be read out due to contamination of the code dial. 對于某些編碼器，絕對位置可能部分不再由于碼盤受到污染而被讀出。

Remedy: 補救措施：

Replace encoder. 更換編碼器。

Cause: 原因

Encoder cable defective

編碼器電纜有缺陷

Remedy: 補救措施：

Checking of encoder cable, and replacements if applicable

檢查編碼器電纜，如有更換

Cause: 原因：

Encoder defective.編碼器有缺陷。

Remedy: 補救措施：

Replace encoder and carry out new notch angle

更換編碼器并執行新的缺口角度