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電子秤常見故障分析

作者:  時間:2014-04-28 08:15:11  點擊數:

 電子秤常見故障分析

 

┏━━━━━━━━┳━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━┳━━━━━━┓

┃    故障現象    ┃    故障分析                  ┃    排除方法                  ┃    備注    ┃

┣━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━━┫

┃                ┃  連接件斷裂,使秤體位移      ┃  更換連接件                  ┃            ┃

┃                ┣━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━━┫

┃                ┃  連接件“O”型密封圈破裂     ┃  更換“O”型密封圈           ┃    剪切梁  ┃

┃                ┣━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━━┫

┃                ┃  連接件底座上的聚四氯乙烯    ┃                              ┃            ┃

┃                ┃破裂或脫落                    ┃  更換連接件                  ┃    剪切梁  ┃

┃                ┣━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━━┫

┃                ┃  傳感器方向限位過大造成傳    ┃                              ┃            ┃

┃                ┃感器與方向限位頂住            ┃  重新調整限位                ┃    剪切梁  ┃

┃                ┣━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━━┫

┃顯示重量不準    ┃  卸荷螺釘碰到傳感器的變形梁  ┃  重新調整超載限位間隙        ┃    剪切梁  ┃

┃                ┣━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━━┫

┃確              ┃                              ┃                              ┃            ┃

┃                ┃  秤體水平度不能滿足要求      ┃  用不銹鋼墊板墊平傳感器      ┃            ┃

┃                ┣━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━━┫

┃                ┃  秤體周圍或秤臺下有雜物卡    ┃                              ┃            ┃

┃                ┃住枰臺                        ┃  清理秤臺周圍                ┃            ┃

┃                ┣━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━━┫

┃                ┃  接線盒器件老化或電位器松動  ┃  更換接線盒或重新焊接電位器  ┃            ┃

┃                ┣━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━━┫

┃                ┃                              ┃  冬天儀表通電30min預熱后     ┃            ┃

┃                ┃  晝夜溫差過大或冬天預熱不夠  ┃                              ┃            ┃

┃                ┃                              ┃再稱重計量                    ┃            ┃

┃                ┣━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━━┫

┃                ┃  傳感器損壞                  ┃  更換傳感器                  ┃            ┃

┣━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━━┫

┃                ┃  輸出電纜與儀表連接處接觸    ┃                              ┃            ┃

┃                ┃不良或虛焊                    ┃  重新焊接電纜線              ┃            ┃

┃                ┣━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━━┫

┃                ┃  傳感器接頭處受潮            ┃  烘干                        ┃            ┃

┃                ┣━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━━┫

┃                ┃  風力過大造成儀表顯示不穩    ┃  重新調整儀表的濾波參數      ┃            ┃

┃                ┣━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━━┫

┃儀表閃爍,顯示  ┃  儀表無良好且單獨的接地線    ┃  設置單獨的接地線            ┃            ┃

┃不穩定          ┃                              ┃                              ┃            ┃

┃                ┣━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━━┫

┃                ┃  儀表使用的外部電源不穩定    ┃  使用照明電源及配置穩壓電源  ┃            ┃

┃                ┣━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━━┫

┃                ┃  傳感器電纜線損傷造成絕緣    ┃  更換傳感器                  ┃            ┃

┃                ┃強度降低                      ┃                              ┃            ┃

┃                ┣━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━━┫

┃                ┃  接線盒內主板對外殼絕緣強    ┃  更換接線盒內主板            ┃            ┃

┃                ┃度降低                        ┃                              ┃            ┃

┗━━━━━━━━┻━━━━━━━━━━━━━━━┻━━━━━━━━━━━━━━━┻━━━━━━┛

┏━━━━━━━━━┳━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━┳━━━━━┓

┃    故障現象      ┃    故障分析                  ┃    排除方法                  ┃    備注  ┃

┣━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━┫

┃                  ┃  儀表損壞                    ┃  更換儀表PCB主板             ┃          ┃

┃                  ┣━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━┫

┃                  ┃  儀表激勵基準電壓壞          ┃  更換儀表PCB主板             ┃          ┃

┃                  ┣━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━┫

┃                  ┃  傳感器零點輸出過大          ┃  更換傳感器                  ┃          ┃

┃                  ┣━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━┫

┃儀表顯示出現      ┃  因用戶在秤臺上電焊等造成    ┃  不在秤臺上或其周圍焊接,更  ┃          ┃

┃(正超載)或(負  ┃傳感器內應變計損壞            ┃換傳感器                      ┃          ┃

┃超載)            ┃                              ┃                              ┃          ┃

┃                  ┣━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━┫

┃                  ┃  傳感器電纜線斷或接線盒至    ┃  更換電纜線                  ┃          ┃

┃                  ┃儀表的輸出電纜                ┃                              ┃          ┃

┃                  ┣━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━┫

┃                  ┃  接線盒受潮                  ┃  用吹風機吹干                ┃          ┃

┣━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━┫

┃                  ┃  儀表保險絲壞                ┃  更換保險絲                  ┃          ┃

┃                  ┣━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━┫

┃開機后無顯示      ┃  外部電源未進入儀表          ┃  檢查外部電源                ┃          ┃

┃                  ┣━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━┫

┃或自檢后無顯      ┃                              ┃  用萬用表分段測量,確定短路  ┃          ┃

┃                  ┃  儀表外部EX線短路            ┃                              ┃          ┃

┃樂                ┃                              ┃位置,采取相應措施            ┃          ┃

┃                  ┣━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━┫

┃                  ┃  儀表PCB主板壞               ┃  更換儀表PCB主板             ┃          ┃

┣━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━┫

┃                  ┃  傳感器輸入阻抗變小造成激    ┃  更換傳感器                  ┃          ┃

┃                  ┃勵電壓負載加重                ┃                              ┃          ┃

┃                  ┣━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━┫

┃燒保險絲          ┃  儀表PCB主板壞               ┃  更換儀表PCB主板             ┃          ┃

┃                  ┣━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━┫

┃                  ┃  儀表上的電源濾波器壞        ┃  更換電源濾波器              ┃          ┃

┃                  ┣━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━┫

┃                  ┃  儀表上的電源變壓器壞        ┃  更換電源變壓器              ┃          ┃

┣━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━┫

┃                  ┃                              ┃  這是正常情況,在零漂不超過  ┃          ┃

┃                  ┃  傳感器零點發生漂移(傳感器  ┃滿量程20%的情況下可用儀表     ┃          ┃

┃儀表開機不顯      ┃的零漂)                      ┃的零基準調整功能回歸零位(詳  ┃          ┃

┃示正常的毛重      ┃                              ┃,見儀表說明書或技術手冊)    ┃          ┃

┃零                ┃                              ┃                              ┃          ┃

┃                  ┣━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━┫

┃                  ┃  方向限位被卡住或秤臺下有    ┃  重新調整方向限位或清理秤    ┃          ┃

┃                  ┃雜物                          ┃臺四周                        ┃          ┃

┣━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━┫

┃                  ┃  在使用過程中連接件斷裂      ┃  更換連接件                  ┃          ┃

┃                  ┣━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━┫

┃                  ┃  方向限位失靈                ┃  重新調整方向限位            ┃          ┃

┃                  ┣━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━┫

┃衡器稱量卸載      ┃  傳感器性能不好              ┃  檢測后更換傳感器            ┃          ┃

┃后顯示不回毛      ┃                              ┃                              ┃          ┃

┃                  ┣━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━┫

┃重零              ┃  儀表的零位跟蹤設置太太      ┃  重新調整儀表零跟蹤功能      ┃          ┃

┃                  ┣━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━╋━━━━━┫

┃                  ┃                              ┃  按“Clear”鍵清除皮重,回到 ┃          ┃

┃                  ┃  儀表去皮后沒有清除皮重      ┃                              ┃          ┃

┃                  ┃                              ┃毛重                          ┃          ┃

┗━━━━━━━━━┻━━━━━━━━━━━━━━━┻━━━━━━━━━━━━━━━┻━━━━━┛

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