4/12/2008 12:58 PM | |
Posts: 148 Rating:
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dear friend can you wait till 15th.... |
Last edited by: tambe at: 4/12/2008 12:59 PM |
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4/14/2008 4:23 PM | |
Joined: 3/27/2008 Last visit: 8/18/2024 Posts: 1132 Rating:
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F0003, can only be a poor power supply. By increasing the boost values this has increased to supply the load. The metering pump sounds like it is a constant torque device so this will be sensitive to increase of boost Voltages, in P1610, P1611. Have you fitted a line choke in the supply to the VSD, this will make the situation worse? Is the supply Voltage, on all three phases, within limits whilst delivering full load? If this is a supply problem try to fix it as soon as possible, because the VSD input stage will be working very hard, it may possibly damage the input stage/DC link. Can you see any discoloured/hot cable connections in the supply to the VSD? Are all 3 phases good? |
Last edited by: tractor at: 4/14/2008 6:24 PMTractor |
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4/15/2008 8:12 AM | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Posts: 148 Rating:
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Dear, I may suggest you the following parameters. for This application.
And at low frequency, you can apply (cont. Boost)P1310, Acceleration boost P1311,and starting boost p1312. Your Ramp up and ramp down is sufficient considering the amount of load you are handling. With present settings you are pumping a higher amount of current ,this will reduce significantly. And even your dc link wont drop down(if it is not a problem of line supply) With present situation when you increased the cont. boost from 50% to 100%(p1610) , drive demanded full load current from line. This should cause a over current alarm . But as Mr. Tractor suggested a problematic line supply can cause voltage dips and subsequently the Under voltage Tip. Hence please
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4/15/2008 9:15 AM | |
Posts: 9 Rating:
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Thanks a lot. I put an attachment which describles the pump's working principle. The source of voltage is healthy. I don't know what is VSD. Can you explain it? Attachmentbl-104-l_novados.pdf (406 Downloads) |
Last edited by: liyingfeng at: 4/15/2008 10:06 AM |
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