AB2005 Posted September 16, 2008 Report Share Posted September 16, 2008 Dear Friends, I am extremely worried about frequent malfunctioning of ABB Servo Motor Drives installed in the Splicer units of our recently installed second hand Corrugator machine. There are five splicers in machine and each has two same drives. Drive # 1 (Reel Launch) works only when operator splices the next paper reel at the end of paper on running reel. This drive just only stops a running roll and then re-moves during the splice sequence. Drive #2 (Dancer Roll) always works which controls the tension of web whatever the machine speed. PLC gives two different reference signal (0-10v), Speed reference and Torque reference. There are three PCBs inside a drive; 1) Mother PCB having power circuit and power supply 2) Control & Memory PCB (having back up battery) 3) Connection PCB having terminal blocks for control wiring and a 7 segment displayer. During last one year, both drives in different splicers malfunctioned for 7 times. Most of the time, the problem appeared in second (Memory) PCB that the 7 segment displayer displayed an error but all the related things were ok. If we installed another god drive in the place of that malfunctioned drive, it worked correctly. Only two times the problem appeared in first (power) PCB. The repairing of drive is almost impossible as it has very small electronic components. I had four spare drives which I replaced with four malfunctioned drives and then used the good PCB of that malfunctioned drives for repairing other three malfunctioned drives. This time I don’t have any spare good drive I talked with machine supplier but they did not give me proper answer. ABB has also been stopped the manufacturing of that drive for a long time. Now I am wondering what to do. Please help me out. I want to know why I have been facing such problem with this drive and what to do now so that no more drive would be malfunctioned. The type of drive and motor is as following; Drive ABB AC Servo Motor Drive, 12.4KVA, 19A, 400V, 3phase Type Bivector 535 "18" Ser# 00128-04 Servo Motor ABB with Resolver Type 8C543000V002SN3MB Ser# BS024019 Any help would be highly appriciated. "Don't assume any thing, always check/ask and clear yourself". Link to comment Share on other sites More sharing options...
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