3.7KW变频器调试正常以后,开始调试55KW变频器了。电脑上开停设备正常;频率设定正常。心中窃喜,只有这几个大家伙没问题,设备电气调试基本差不离了。低频率运转一会,一切正常。然后开始提速,提到40HZ以后,运行一会画面突然变暗了。上位机通讯中断,一看PLC,红灯亮起。*反应还是干扰问题。将变频器断电,PLC重启运行恢复正常。后来又试了几次,发现30HZ一下运行正常,30HZ以上运行一段时间会故障停机。
刚开始怀疑是PLC电源污染了,变频器的高次谐波通过电源串进PLC,导致异常停机。以前现场遇到过这个情况,后来通过加装隔离变压器解决了问题。赶紧打回公司,第二天直接跟车发来了隔离变压器。加上变压器以后,果然有效果,*起码视频监控的干扰小多了,但是PLC故障停机依然存在。AEG MODICON PROM MEMORY CARTRIDGE AS-E380-902
OHIO GEAR B2262 Uniline 200 GEAR REDUCER, 60:1, NNB

KAWASAKI 50999-1545 PC BOARD, NIB, SEALED IN BAG
SQUARE D 9070 SK5271W F31 TRANSFORMER DISCONNECT, 1600/
SQUARE D 9070 SK5271V TRANSFORMER DISCONNECT, 1300/1500
SQUARE D 9070 SK5271W F11F30 TRANSFORMER DISCONNECT, 16
HOFFMAN A-202006LP WALL MOUNT ENCLOSURE, CONTINUOUS HIN
THE WALTON CO PARTIAL EXTRACTOR SET
SENSYCON 0 P/I SIGNAL CONVERTER, NNB
ABB YYT 102F / YT212001-AN/7 SERVO CONTROL BOARD
BRAY FTG SERIES MANUAL ACTUATOR,
RADISYS EXM-10A ETHERNET,
SHARP JW-4KBM RACK W/ JW-21PU; JW-32CUM1 PLUS MORE
WINTERS D70957 / D70950 SERIES DIAPHRAGM SEAL WITH TEMP
ARI BR-900 / 35.901 CLOSED LIFTING DEVICE ANGLE PATTERN