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西门子,施耐德和松下伺服驱动器维修常见问题及解决方法
一、西门子直流伺服驱动系统故障维修10例
例1.进线快速熔断器熔断的故障维修 故障现象:一台配套SIEMENS 8MC的卧式加工中心,在电网突然断电后开机,系统无法起动。
分析与处理过程:经检查,该机床X轴伺服驱动器的进线快速熔断器已经熔断。该机床的进给系统采用的是SIEMENS 6RA系列直流伺服驱动,对照驱动器检查伺服电动机和驱动装置,未发现任何元器件损坏和短路现象。
检查机床机械部分工作亦正常,直接更换熔断器后,起动机床,恢复正常工作。分析原因是由于电网突然断电引起的偶发性故障。
例2.SIEMENS 8MC测量系统故障的维修 故障现象:一台配套SIEMENS 8MC的卧式加工中心,当X轴运动到某一位置时,液压电动机自动断开,且出现报警提示:Y轴测量系统故障。断电再通电,机床可以恢复正常工作,但X轴运动到某一位置附近,均可能出现同一故障。
分析与处理过程:该机床为进口卧式加工中心,配套SIEMENS 8MC数控系统,SIEMENS 6RA系列直流伺服驱动。由于X轴移动时出现Y轴报警,为了验证系统的正确性,拨下了X轴测量反馈电缆试验,系统出现X轴测量系统故障报警,因此,可以排除系统误报警的原因。
检查X轴在出现报警的位置及附近,发现它对Y轴测量系统(光栅)并无干涉与影响,且仅移动Y轴亦无报 警,Y轴工作正常。再检查Y轴电动机电缆插头、光栅读数头和光栅尺状况,均未发现异常现象。
考虑到该设备属大型加工中心,电缆较多,电柜与机床之间的电缆长度较长,且所有电缆均固定在电缆架上,随机床来回移动。根据上述分析,初步判断由于电缆的弯曲,导致局部断线的可能性较大。
维修时有意将X轴运动到出现故障点位置,人为移动电缆线,仔细测量Y轴上每一根反馈信号线的连接情况,*终发现其中一根信号线在电缆不断移动的过程中,偶尔出现开路现象;利用电缆内的备用线替代断线后,机床恢复正常。
ALLEN BRADLEY 140M-C-ASA20 / 140MCASA20 (USED TESTED CLEANED)
ALLEN BRADLEY 42SMP-7001 / 42SMP7001 (USED TESTED CLEANED)
ALLEN BRADLEY 1489-M3C350 / 1489M3C350 (USED TESTED CLEANED)
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ALLEN BRADLEY 1489-A2D060 / 1489A2D060 (USED TESTED CLEANED)
ALLEN BRADLEY 42GRU-9203-QD / 42GRU9203QD (USED TESTED CLEANED)
ALLEN BRADLEY 140-T01 / 140T01 (USED TESTED CLEANED)
NEW LISTINGALLEN BRADLEY 800T-U41 / 800TU41 (Surplus No Box)
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ALLEN BRADLEY 40851-925-26 / 4085192526 (USED TESTED CLEANED)
ALLEN BRADLEY 42GRP-9003-QD1 / 42GRP9003QD1 (USED TESTED CLEANED)
ALLEN BRADLEY 21A241 / 21A241 (USED TESTED CLEANED)
ALLEN BRADLEY 60-2423-1 / 6024231 (USED TESTED CLEANED)
ALLEN BRADLEY 20-A288 / 20A288 (USED TESTED CLEANED)
ALLEN BRADLEY 198-IB2XOW1 / 198IB2XOW1 (USED TESTED CLEANED)
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ALLEN BRADLEY 702-AOD-91 / 702AOD91 (USED TESTED CLEANED)
ALLEN BRADLEY 889N-U8AF-5 / 889NU8AF5 (USED TESTED CLEANED)
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ALLEN BRADLEY 21A244 / 21A244 (RQANS2)
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ALLEN BRADLEY 599-SS09OJ / 599SS09OJ (RQANS1)
ALLEN BRADLEY 40394-334-55 / 4039433455 (RQANS1)
ALLEN BRADLEY 1784-CP11 / 1784CP11 (USED TESTED CLEANED)
ALLEN BRADLEY 1494V-RA3 / 1494VRA3 (USED TESTED CLEANED)
ALLEN BRADLEY Z-36608 / Z36608 (USED TESTED CLEANED)
ALLEN BRADLEY 705-TOD169 / 705TOD169 (USED TESTED CLEANED)
ALLEN BRADLEY 802-PASJ20-3 / 802PASJ203 (USED TESTED CLEANED)
ALLEN BRADLEY 700DCPH600Z1 / 700DCPH600Z1 (NEW NO BOX)
ALLEN BRADLEY 709-AOA-103 / 709AOA103 (USED TESTED CLEANED)
ALLEN BRADLEY 140M-C-W545N / 140MCW545N (RQANS1)
ALLEN BRADLEY 709-TOA-103A / 709TOA103A (USED TESTED CLEANED)
ALLEN BRADLEY 140-MN-0100-A/B / 140MN0100AB (USED TESTED CLEANED)
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ALLEN BRADLEY 85-A81 / 85A81 (USED TESTED CLEANED)
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电话:0591-83566917 手机:18005006971 联系人:陈小真 Q Q:2851617312