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Correcting Problems Caused by Variable …
Eric AndersonCraig Scroggins2011 Correcting Problems Caused by Variable FrequencyDrivesSwitching from an on/off pump control to a Variable frequency drive pump may result inflow measurement errors and pH measurement errors. This section details many solutions Anderson has observed to help correct electrical noise Problems . A power line filter of the type and size indicated by the VFD manufacturer should beused to reduce the electrical noise being fed into the power wiring. Power line filters areusually listed as optional equipment. All VFD drive cables should be of a shielded type. Allpower and signal wires to and from Anderson equipment should be kept at least 12inches away from VFD wiring. If the VFD wiring must cross any Anderson Product wiringmake sure they cross at a 90 angle. Anderson J Plus controllers should be kept as faraway VFD's as possible. Use separate branch circuits for VFD's and Anderson flow measurement errors occur, it may be necessary to change the meter cable from a 2conductor with shield to a 3 conductor with shield and connect the shield to earth ground.
Eric Anderson Craig Scroggins 2011 Correcting Problems Caused by Variable Frequency Drives Switching from an on/off pump control to a variable frequency drive pump may result in
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