F011

故障描述：該裝置由于過電流而關(guān)機(jī),超過關(guān)機(jī)門檻極限,就是過電流

解決方案：１）編碼器信號不好，或丟轉(zhuǎn) ２）主板上一取樣部分損壞，拆到既可，不影響　３）變頻器輸出是否短路或有接地故障 ４）負(fù)載處于過載狀態(tài) ５）電機(jī)與變頻器是否匹配 ６）是否動(dòng)態(tài)要求過高
案例：

我司主要從事各種品牌的變頻器，直流調(diào)速器，數(shù)控電源模塊，伺服電機(jī)，軟啟動(dòng)器，工控機(jī)，控制板卡等相關(guān)工業(yè)自動(dòng)化產(chǎn)品的專業(yè)維修。
公司技術(shù)部特聘西門子，ABB，三菱，富士等公司的工程師作為我們的技術(shù)服務(wù)支持，為用戶提供更專業(yè)的服務(wù)。
維修實(shí)力：
1.芯片級維修 （對電路板的單個(gè)的分立元件進(jìn)行檢測.更換）改變了更換整塊電路板的傳統(tǒng)維修方法，從而減少維修費(fèi)用，也降低了原本因維修成本過高而建議報(bào)廢的幾率：2.配件充足 擁有大量進(jìn)口和國產(chǎn)工業(yè)設(shè)備的配件，從而可對待修產(chǎn)品實(shí)施最快捷的服務(wù)：3.檢測設(shè)備先進(jìn) 配備各種檢測儀器，集成電路測試儀，測試臺，負(fù)載實(shí)驗(yàn)裝備，確保維修質(zhì)量. 
 維修宗旨：  
1.免費(fèi)檢測 2.落實(shí)維修費(fèi)用(20%之內(nèi))3.客戶認(rèn)可后進(jìn)行維修 4.修復(fù)后并上機(jī)實(shí)驗(yàn)確保現(xiàn)場正常使用5.合同保障

合作客戶部分名單：                                                                                                    遷安軋一鋼鐵集團(tuán)有限公司     上海凱泉山西有限公司        青島雙星機(jī)械     天津頂津食品有限公司    南昌科瑞一體化整流電源有限公司   內(nèi)蒙伊利集團(tuán)    杭州宏旺金屬制品有限公司      焦作電纜廠             冀東水泥山西分廠        內(nèi)蒙赤峰白音諾爾鉛鋅礦     遼寧海城正昌工業(yè)有限公司     內(nèi)蒙一機(jī)集團(tuán)齊齊齊哈爾二機(jī)床廠     云南通亞集團(tuán)   沈陽盛杰蠟業(yè)有限公司     天津中美史克      新疆天翼翔技術(shù)開發(fā)有限公司   吉林俊宏藥業(yè)

變頻器維修專線：13269286992倪工，QQ：404379386，微信13269286992

北京6SE6420/6SE6430/6SE6440/6SE70/ECO西門子變頻器專業(yè)維修

芯片級維修： MICROMASTER 420,訂貨號如

如有疑問請咨詢技術(shù)電話13269286992倪工

下:6SE6420-2UC11-2AA1,6SE6420-2UC12-5AA1,6SE6420-2UC13-7AA1,6SE6420-2UC15-5AA1,6SE6420-2UC17-5AA1,6SE6420-2UC21-1BA1,6SE6420-2UC21-5BA1,6SE6420-2UC22-2BA1,6SE6420-2UC23-0CA1,6SE6420-2AB11-2AA1,6SE6420-2AB12-5AA1,6SE6420-2AB13-7AA1,6SE6420-2AB15-5AA1,6SE6420-2AB17-5AA1,6SE6420-2AB21-1BA1,6SE6420-2AB21-5BA1,6SE6420-2AB22-2BA1,6SE6420-2AB23-0CA1,6SE6420-2UC11-2AA1,6SE6420-2UC12-5AA1,6SE6420-2UC13-7AA1,6SE6420-2UC15-5AA1,6SE6420-2UC17-5AA1,6SE6420-2UC21-1BA1,6SE6420-2UC21-5BA1,6SE6420-2UC22-2BA1,6SE6420-2UC23-0CA1,6SE6420-2UC24-0CA1,6SE6420-2UC25-5CA1,6SE6420-2AC23-0CA1,6SE6420-2AC24-0CA1,6SE6420-2AC25-5CA1,6SE6420-2UD13-7AA1,6SE6420-2UD15-5AA1,6SE6420-2UD17-5AA1,6SE6420-2UD21-1AA1,6SE6420-2UD21-5AA1,6SE6420-2UD22-2BA1,6SE6420-2UD23-0BA1,6SE6420-2UD24-0BA1,6SE6420-2UD25-5CA1,6SE6420-2UD27-5CA1,6SE6420-2UD31-1CA1,6SE6420-2AD22-2BA1,6SE6420-2AD23-0BA1,6SE6420-2AD24-0BA1,6SE6420-2AD25-5CA1,6SE6420-2AD27-5CA1,6SE6420-2AD31-1CA1; 

如有疑問請咨詢技術(shù)電話13269286992倪工

MICROMASTER 430變頻器訂貨號如下:6SE6430-2UD27-5CA0,6SE6430-2UD31-1CA0,6SE6430-2UD31-5CA0,6SE6430-2UD31-8DA0,6SE6430-2UD32-2DA0,6SE6430-2UD32-2DB0,6SE6430-2UD33-0DA0,6SE6430-2UD33-0DB0,6SE6430-2UD33-7EA0,6SE6430-2UD33-7EB0,6SE6430-2UD34-5EA0,6SE6430-2UD34-5EB0,6SE6430-2UD35-5FA0,6SE6430-2UD35-5FB0,6SE6430-2UD37-5FA0,6SE6430-2UD37-5FB0,6SE6430-2UD38-8FA0,6SE6430-2UD38-8FB0,6SE6430-2UD41-1FA0,6SE6430-2UD41-1FB0,6SE6430-2UD41-3FA0,6SE6430-2UD41-3FB06SE6430-2UD41-6GA0,6SE6430-2UD41-6GB0,6SE6430-2UD42-0GA0,6SE6430-2UD42-0GB0,6SE6430-2UD42-5GA0,6SE6430-2UD42-5GB0,6SE6430-2AD27-5CA0,6SE6430-2AD31-1CA0,6SE6430-2AD31-5CA0,6SE6430-2AD31-8DA0,6SE6430-2AD32-2DA0,6SE6430-2AD33-0DA0,6SE6430-2AD33-7EA0,6SE6430-2AD34-5EA0,6SE6430-2AD35-5FA0,6SE6430-2AD37-5FA0,6SE6430-2AD38-8FA0,6SE6430-2UD31-8DB0; 如有疑問請咨詢技術(shù)電話13269286992倪工

MICROMASTER 440變頻器訂貨號如下:6SE6440-2UC11-2AA1,6SE6440-2UC12-5AA1,6SE6440-2UC13-7AA1,6SE6440-2UC15-5AA1,6SE6440-2UC21-1BA1,6SE6440-2UC21-5BA1,6SE6440-2UC22-2BA1,6SE6440-2UC23-0CA1,6SE6440-2UC11-2AA1,6SE6440-2UC12-5AA1,6SE6440-2UC13-7AA1,6SE6440-2UC15-5AA1,6SE6440-2UC17-5AA1,6SE6440-2UC21-1BA1,6SE6440-2UC21-5BA1,6SE6440-2UC22-2BA1,6SE6440-2UC23-0CA1,6SE6440-2UC24-0CA1,6SE6440-2UC25-5CA1,6SE6440-2UC27-5DA1,6SE6440-2UC31-1DA1,6SE6440-2UC31-5DA1,6SE6440-2UC31-8EA1,6SE6440-2UC32-2EA1,6SE6440-2UC33-0FA1,6SE6440-2UC33-7FA1,6SE6440-2UC34-5FA1,6SE6440-2UD13-7AA1,6SE6440-2UD15-5AA1,6SE6440-2UD17-5AA1,6SE6440-2UD21-1AA1,6SE6440-2UD21-5AA1,6SE6440-2UD22-2BA1,6SE6440-2UD23-0BA1,6SE6440-2UD24-0BA1,6SE6440-2UD25-5CA1,6SE6440-2UD27-5CA1,6SE6440-2UD31-1CA1,6SE6440-2UD31-5DA1,6SE6440-2UD31-5DB1,6SE6440-2UD31-8DA1,6SE6440-2UD31-8DB1,6SE6440-2UD32-2DA1,6SE6440-2UD32-2DB1,6SE6440-2UD33-0EA1,6SE6440-2UD33-0EB1,6SE6440-2UD33-7EA1,6SE6440-2UD33-7EB1,6SE6440-2UD34-5FA1,6SE6440-2UD34-5FB1,6SE6440-2UD35-5FA1,6SE6440-2UD35-5FB1,6SE6440-2UD37-5FA1,6SE6440-2UD37-5FB1,6SE6440-2UD38-8FA1,6SE6400-2UD38-8FB1,6SE6440-2UD41-1FA1,6SE6400-2UD41-1FB1,6SE6440-2UD41-3GA1,6SE6400-2UD41-3GB1,6SE6440-2UD41-6GA1,6SE6400-2UD41-6GB1,6SE6440-2UD42-0GA1,6SE6400-2UD42-0GB1,6SE6440-2UE17-5CA1,6SE6440-2UE21-5CA1,6SE6440-2UE22-2CA1,6SE6440-2UE24-0CA1,6SE6440-2UE25-5CA1,6SE6440-2UE27-5CA1,6SE6440-2UE31-1CA1,6SE6440-2UE31-5DA1,6SE6440-2UE31-8DA1,6SE6440-2UE32-2DA1,6SE6440-2UE33-0EA1,6SE6440-2UE33-7EA1, 如有疑問請咨詢技術(shù)電話13269286992倪工

6SE6440-2UE34-5FA1,6SE6440-2UE35-5FA1,6SE6440-2UE37-5FA1,6SE6440-2AB11-2AA1,6SE6440-2AB12-5AA1,6SE6440-2AB13-7AA1,6SE6440-2AB15-5AA1,6SE6440-2AB17-5AA1,6SE6440-2AB21-1BA1,6SE6440-2AB21-5BA1,6SE6440-2AB22-2BA1,6SE6440-2AB23-0CA1,6SE6440-2AC23-0CA1,6SE6440-2AC24-0CA1,6SE6440-2AC25-5CA1,6SE6440-2AD22-2BA1,6SE6440-2AD23-0BA1,6SE6440-2AD24-0BA1,6SE6440-2AD25-5CA1,6SE6440-2AD27-5CA1,6SE6440-2AD31-1CA1,6SE6440-2AD31-5DA1,6SE6440-2AD31-8DA1,6SE6440-2AD32-2DA1,6SE6440-2AD33-0EA1,6SE6440-2AD33-7EA1,6SE6440-2AD34-5FA1,6SE6440-2AD35-5FA1,6SE6440-2AD37-5FA1,6SE6440-2UC17-5AA1; 如有疑問請咨詢技術(shù)電話13269286992倪工

SINAMIC SG110變頻器訂貨號如下:6SL3211-0AB11-2UA0,6SL3211-0AB11-2UB0,6SL3211-0KB11-2UA0,6SL3211-0KB11-2UB0,6SL3211-0AB12-5UA0,6SL3211-0AB12-5UB0,6SL3211-0KB12-5UA0,6SL3211-0KB12-5UB0,6SL3211-0AB13-7UA0,6SL3211-0AB13-7UB0,6SL3211-0KB13-7UA0,6SL3211-0KB13-7UB0,6SL3211-0AB15-5UA0,6SL3211-0AB15-5UB0,6SL3211-0KB15-5UA0,6SL3211-0KB15-5UB0,6SL3211-0AB17-5UA0,6SL3211-0AB17-5UB0,6SL3211-0KB17-5UA0,6SL3211-0KB17-5UB0,6SL3211-0AB21-1UA0,6SL3211-0AB21-1UB0,6SL3211-0AB21-5UA0,6SL3211-0AB21-5UB0,6SL3211-0AB22-2UA0,6SL3211-0AB22-2UB0,6SL3211-0AB23-0UA0,6SL3211-0AB23-0UB0,6SL3211-0AB11-2BA0,6SL3211-0AB11-2BB0,6SL3211-0KB11-2BA0,6SL3211-0KB11-2BB0,6SL3211-0AB12-5BA0,6SL3211-0AB12-5BB0,6SL3211-0KB12-5BA0,6SL3211-0KB12-5BB0,6SL3211-0AB13-7BA0,6SL3211-0AB13-7BB0,6SL3211-0KB13-7BA0,6SL3211-0KB13-7BB0,6SL3211-0AB15-5BA0,6SL3211-0AB15-5BB0,6SL3211-0KB15-5BA0,6SL3211-0KB15-5BB0,6SL3211-0AB17-5BA0,6SL3211-0AB17-5BB0,6SL3211-0KB17-5BA06SL3211-0KB17-5BB0,6SL3211-0AB21-1AA0,6SL3211-0AB21-1AB0,6SL3211-0AB21-5AA0,6SL3211-0AB21-5AB0,6SL3211-0AB22-2AA0,6SL3211-0AB22-2AB0,6SL3211-0AB23-0AA0,6SL3211-0AB23-0AB0; 如有疑問請咨詢技術(shù)電話13269286992倪工

MICROMASTER EcO&MIDIMASTER Eco變頻器型號如下:ECO1-75/2,EC01-110/2,EC01-150/2,EC01-220/2,EC01-300/2,EC01-400/2,ECO1-110/3,ECO1-150/3,ECO1-220/3,ECO1-300/3,ECO1-400/3,ECO1-550/3,ECO1-750/3,ECO1-220/3,ECO1-300/3,ECO1-400/3,ECO1-550/3,ECO1-750/3,ECO1-550/2,ECO1-750/2,ECO1-1100/2,ECO1-1500/2,ECO1-1850/2,ECO1-2200/2,ECO1-3000/2,ECO1-3700/2,ECO1-4500/2,ECO1-1100/3,ECO1-1500/3,ECO1-1850/3,ECO1-2200/3,ECO1-3000/3,ECO1-3700/3,ECO1-4500/3,ECO1-5500/3,ECO1-7500/3,ECO1-9000/3,ECO1-110K/3,ECO1-132K/3,ECO1-160K/3,ECO1-200K/3,ECO1-250K/3,ECO1-315K/3,ECO1-400/4,ECO1-550/4,ECO1-750/4,ECO1-1100/4,ECO1-1500/4,ECO1-1850/4,ECO1-2200/4,ECO1-3000/4,ECO1-3700/4,ECO1-4500/4,ECO1-550/2,ECO1-750/2,ECO1-1100/2,ECO1-1500/2,ECO1-1850/2,ECO1-2200/2,ECO1-3000/2,ECO1-3700/2,ECO1-4500/2,ECO1-1100/3,ECO1-1500/3,ECO1-1850/3,ECO1-2200/3,ECO1-3000/3,ECO1-3700/3,ECO1-4500/3,ECO1-5500/3,ECO1-7500/3,ECO1-9000/3,ECO1-110/2,ECO1-150/2,ECO1-220/2, 如有疑問請咨詢技術(shù)電話13269286992倪工

ECO1-300/2,ECO1-400/2,ECO1-550/2,ECO1-750/2,ECO1-1100/2,ECO1-1500/2,ECO1-1850/2,ECO1-2200/2,ECO1-3000/2,ECO1-3700/2,ECO1-4500/2,ECO1-110/2,ECO1-150/2,ECO1-220/2,ECO1-300/2,ECO1-400/2,ECO1-550/2,ECO1-750/2,ECO1-1100/2,ECO1-1500/2,ECO1-1850/2,ECO1-2200/2,ECO1-3000/2,ECO1-3700/2,ECO1-4500/2,ECO1-300/3,ECO1-400/3,ECO1-550/3,ECO1-750/3,ECO1-1100/3,ECO1-1500/3,ECO1-1850/3,ECO1-2200/3,ECO1-3000/3,ECO1-3700/3,ECO1-4500/3,ECO1-5500/3,ECO1-7500/3,ECO1-9000/3,ECO1-300/3,ECO1-400/3,ECO1-550/3,ECO1-750/3,ECO1-1100/3,ECO1-1500/3,ECO1-1850/3,ECO1-2200/3,ECO1-3000/3,ECO1-3700/3,ECO1-4500/3,ECO1-5500/3,ECO1-7500/3,ECO1-9000/3,ECO1-400/4,ECO1-550/4,ECO1-750/4,ECO1-1100/4,ECO1-1500/4,ECO1-1850/4,ECO1-2200/4,ECO1-3000/4,ECO1-3700/4,ECO1-4500/4; 如有疑問請咨詢技術(shù)電話13269286992倪工

MICROMASTER EcO&MIDIMASTER Eco變頻器訂貨號如下:6SE9513-8CA40,6SE9515-5CB40,6SE9517-5CB40,6SE9521-0CC40,6SE9521-4CC40,6SE9521-8CC40,6SE9513-0DA40,6SE9514-5DA40,6SE9516-0DB40,6SE9517-7DB40,6SE9521-0DB40,6SE9521-3DC40,6SE9521-7DC40,6SE9516-0DB50,6SE9517-7DB50,6SE9521-0DC50,6SE9521-3DC50,6SE9521-7DC50,6SE9522-3CG40,6SE9522-8CG40,6SE9524-2CH40,6SE9525-4CH40,6SE9526-8CJ40,6SE9528-0CJ40,6SE9531-0CK40,6SE9531-3CK40,6SE9531-5CK40,6SE9522-4DG40,6SE9523-0DG40,6SE9523-7DH40,6SE9524-3DH40,6SE9525-8DJ40,6SE9527-1DJ40,6SE9528-4DJ40,6SE9531-0DK40,6SE9531-4DK40,6SE9531-7DK40,6SE9532-1EL40,6SE9532-6EL40,6SE9533-2EL40,6SE9533-7EL40,6SE9535-1EM40,6SE9536-0EM40,6SE9516-1FG40,6SE9521-0FG40,6SE9521-1FG40,6SE9521-7FG40,6SE9522-2FG40,6SE9522-7FH40,6SE9523-2FH40,6SE9524-1FJ40,6SE9525-2FJ40,6SE9526-2FJ40,6SE9522-3CG50,6SE9522-8CG50,6SE9524-2CH50,6SE9525-4CJ50,6SE9526-8CJ50,6SE9528-0CJ50,6SE9531-0CK50,6SE9531-3CK50,6SE9531-5CK50,6SE9522-4DG50,6SE9523-0DG50,6SE9523-7DH50,6SE9524-3DH50,6SE9525-8DJ50,6SE9527-1DJ50,6SE9528-4DJ50,6SE9531-0DK50,6SE9531-4DK50,6SE9531-7DK50,6SE9515-5CS45,6SE9517-4CS45,6SE9521-0CS45,6SE9521-4CS45,6SE9521-8CS45,6SE9522-3CS45,6SE9522-8CS45,6SE9524-2CS45,6SE9525-4CS45,6SE9526-8CS45,6SE9528-0CS45,6SE9531-0CS45,6SE9531-3CS45,6SE9531-5CS45,6SE9515-5CS55,6SE9517-4CS55,6SE9521-0CS55,6SE9521-4CS55,6SE9521-8CS55,6SE9522-3CS55,6SE9522-8CS55,6SE9524-2CS55,6SE9525-4CS55,6SE9526-8CS55,6SE9528-0CS55,6SE9531-0CS55,6SE9531-3CS55,6SE9531-5CS55,6SE9517-7DS45,6SE9521-0DS45,6SE9521-3DS45,6SE9521-7DS45,6SE9522-4DS45,6SE9523-0DS45,6SE9523-7DS45,6SE9524-3DS45,6SE9525-8DS45,6SE9527-1DS45,6SE9528-4DS45,6SE9531-0DS45,6SE9531-4DS45,6SE9531-7DS45,6SE9517-7DS55,6SE9521-0DS55,6SE9521-3DS55,6SE9521-7DS55,6SE9522-4DS55,6SE9523-0DS55,6SE9523-7DS55,6SE9524-3DS55,6SE9525-8DS55,6SE9527-1DS55,6SE9528-4DS55,6SE9531-0DS55,6SE9531-4DS55,6SE9531-7DS55,6SE9516-1FS45,6SE9521-0FS45,6SE9521-1FS45,6SE9521-7FS45,6SE9522-2FS45,6SE9522-7FS45,6SE9523-2FS45,6SE9524-1FS45,6SE9525-2FS45,6SE9526-2FS45; 如有疑問請咨詢技術(shù)電話13269286992倪工

6SE70書本型變頻器:6SE7016-1EA61,6SE7018-0EA61,6SE7021-0EA61,6SE7021-3EB61,6SE7021-8EB61,6SE7022-6EC61,6SE7023-4EC61,6SE7023-8ED61,6SE7024-7ED61,6SE7026-0ED61,6SE7027-2ED61,6SE7031-0EE60,6SE7031-2EF60,6SE7031-5EF60,6SE7031-8EF60,6SE7032-1EG60,6SE7032-6EG60,6SE7033-2EG60,6SE7033-7EG60,6SE7035-1EK60,6SE7036-0EK60,6SE7037-0EK60; 
6SE70書本型逆變器:6SE7016-1TA61,6SE7018-0TA61,6SE7021-0TA61,6SE7021-3TB61,6SE7021-8TB61,6SE7022-6TC61,6SE7023-4TC61,6SE7023-8TD61,6SE7024-7TD61,6SE7026-0TD61,6SE7027-2TD61,6SE7031-0TE60,6SE7031-2TF60,6SE7031-5TF60,6SE7031-8TF60,6SE7032-1TG60,6SE7032-6TG60,6SE7033-2TG60,6SE7033-7TG60,6SE7035-1TJ60,6SE7036-0TJ60,6SE7037-0TJ60,6SE7038-6TK60,6SE7041-1TK60,6SE7041-3TL60; 
6SE71變頻調(diào)速柜:6SE7131-0EB61-3BA0,6SE7131-2EC61-3BA0,6SE7131-5EC61-3BA0,6SE7131-8EC61-3BA0,6SE7132-1ED61-3BA0,6SE7132-6ED61-3BA0,6SE7133-2ED61-3BA0,6SE7133-7ED61-3BA0,6SE7135-1EE62-3BA0,6SE7136-0EE62-3BA0,6SE7137-0EE62-3BA0,6SE7138-6EG62-3BA0,
6SE7141-1EH62-3BA0,6SE7141-3EJ62-3BA0,6SE7126-0HC61-3BA0,6SE7128-2HC61-3BA0,6SE7131-0HD61-3BA0,6SE7131-2HD61-3BA0,6SE7131-5HD61-3BA0,6SE7131-7HD61-3BA0,6SE7132-1HD61-3BA0,6SE7133-0HE62-3BA0,6SE7133-5HE62-3BA0,6SE7134-5HE62-3BA0,6SE7135-7HG62-3BA0,6SE7136-5HG62-3BA0,6SE7138-6HG62-3BA0,6SE7141-1HJ62-3BA0,6SE7141-2HJ62-3BA0,6SE7141-4HL62-3BA0,6SE7141-6HL62-3BA0,6SE7141-4HN62-3BA0,6SE7141-6HN62-3BA0,6SE7131-0EC61-4BA0,6SE7131-2ED61-4BA0,6SE7131-5ED61-4BA0,6SE7131-8ED61-4BA0,6SE7132-1EE61-4BA0,6SE7132-6EE61-4BA0,6SE7133-2EE61-4BA0,6SE7133-7EE61-4BA0,6SE7135-1EF62-4BA0,6SE7136-0EG62-4BA0,6SE7137-0EG62-4BA1,6SE7138-6EG62-4BA0,6SE7141-1EH62-4BA0,6SE7141-3EJ62-4BA0,6SE7126-0HD61-4BA0,6SE7128-2HC61-4BA0,6SE7131-0HE61-4BA0,6SE7131-2HE61-4BA0,6SE7131-5HE61-4BA0,6SE7131-7HE61-4BA0,6SE7132-1HE61-4BA0,6SE7133-0HF62-4BA0,6SE7133-5HF62-4BA0,6SE7134-5HF62-4BA0,6SE7135-7HG62-4BA0,6SE7136-5HG62-4BA0,6SE7138-5HG62-4BA0,6SE7141-1HJ62-4BA0,6SE7141-2HJ62-4BA0,6SE7141-4HL62-4BA0,6SE7141-6HL62-4BA0,6SE7141-4HN62-4BA0,6SE7141-6HN62-4BA0; 如有疑問請咨詢技術(shù)電話13269286992倪工

6SE6436

6SE6436-2BD33-0AD0變頻器專業(yè)維修,北京西門子6SE6436-2BD33-7EA0變頻器專業(yè)維修,6SE6436-2BD35-5FA0專業(yè)維修,西門子變頻器6SE6436-2BD33-0DA0專業(yè)維修如有疑問請咨詢技術(shù)電話13269286992倪工