Dear All,
I have worked on s-7 400. I have worked on Maintenance of PLC in our winder machine used to wind the reels of paper machine.The problem is that I locate the fault without PG from the Hard copies of the logic but I cannot locate the flag inputs or the soft I/Os generated by...
Dear All,
We have a guest house in our Paper Mill where a lot of variation of Voltages occur. So now we decided to place a transformer there which will have its input feeder from our existing Transformer room about 1.5 KM away from the Guest House. The cable will be armoured XLPE 11 KV. Kindly...
Dear All,
We have 8 AC Drives on 3 Rolls in our Press Section of Paper Machine which are arranged in Master/Follower fashion. These are divided in 2 groups comprising of 4 per group.
Yesterday we faced a surprising situation that 1 of the drive in first group was showing its RPM 10 meters/min...
Dear All,
We have connected our whole MCC panel with profibus including constant speed and variable speed motors. Today I have found that about 20 motors were giving communication problem. When these were reset they became ok. But this kind of problem frequently occurs with 2 or 3 motors giving...
Dear All
I am working in Pulp and Paper Mill where we have vacuum system comprising 3.3 KV vacuum pump- motor combination. These are tripping frequently with IE>> fault(Earth Fault). Kindly help if there is any CT fault.
Dear All,
I am working in Pulp and Paper Mill. We have Honeywell QCS that is showing a lot of variation in grammage and moisture and also its link normally goes down without giving any alarm. Also MD control does'nt work at Automode. Process people normally use manual mode for controlling the...
