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力士樂(lè)伺服驅(qū)動(dòng)器專業(yè)維修全系列：作為一種精密儀器，驅(qū)動(dòng)器給常人的感覺高深，操作起來(lái)不容易，維修起來(lái)更加不容易。但是，對(duì)于一些用戶或者操作人員來(lái)說(shuō)，掌握驅(qū)動(dòng)器維修相關(guān)知識(shí)又是一門必不可少的課程。而且想要學(xué)習(xí)驅(qū)動(dòng)器維修，需要全方位掌握一些技能與知識(shí)。

力士樂(lè)伺服驅(qū)動(dòng)器維修保養(yǎng)：F822故障含義：Motor Encoder Failure: Signal too Small電機(jī)編碼器故障：信號(hào)太小

Description:故障說(shuō)明：

The motor encoder signals are monitored. If the signal amplitudes as measured via AK1 and AK2 are outside of the allowable region between Uss = 12.0V and Uss = 18.0 V, then the error message appears. The drive becomes torque-free and an optional brake is immediately activated.監(jiān)控電機(jī)編碼器信號(hào)。如果通過(guò)AK1和AK2測(cè)得的信號(hào)振幅超出Uss=12.0V和Uss=18.0V之間的允許范圍，則會(huì)顯示錯(cuò)誤消息。驅(qū)動(dòng)器變?yōu)闊o(wú)扭矩狀態(tài)，并立即啟用可選制動(dòng)器。

Cause:

1. Defective feedback cable.

2. Defective feedback.

1.反饋電纜有缺陷。

2.反饋有缺陷。

Remedy:

1. Check the feedback cable.Lay the power cables separate from the feedback cable.The cable shield must be connected to the drive controller.(See also project reference of the drive control).檢查反饋電纜。將電源電纜與反饋電纜分開敷設(shè)。電纜屏蔽必須連接到驅(qū)動(dòng)器控制器。（另請(qǐng)參見驅(qū)動(dòng)控制的項(xiàng)目參考）。

2. Exchange motor.更換電機(jī)。

Note: This error can only be cleared in parametrization mode (phase2). As a result of this error, the encoder emulation is switched off.注：此錯(cuò)誤只能在參數(shù)化模式（第2階段）下清除。由于此錯(cuò)誤，編碼器仿真被關(guān)閉。