CONTROLS AND SYSTEMS

In this Article we are going to see VFD DRIVES TROUBLESHOOTING  Common Fault Codes.   1.Drive does not start Causes: Drive not ready, Drive not receiving a Run Signal,   Not Ready Causes: Active fault, DC bus too high or low, Run enable input not present,   Run Signal not present: Control place not correct Example trying to start from I/O when active control place is keypad. 2.Drive does not get to speed Causes: Missing reference, Preset speed or jog speed active, Missing Reference: Check analog input monitor, Check that the drive is programmed to follow the correct input, Ensure the drive is not hitting any other limits, Check frequency reference compared to output frequency ,   3.Overcurrent Causes: Incorrect motor parameters, Mechanical fault, Electrical fault, Current measurement error, Solution: Check wiring and motor for insulation failures and proper connections. Check for mechanical overload, Locked rotor. Check for proper ...

In this Article, we are going to discuss about what specifications are mentioned on the Danfoss VLT micro drive FC 51 name plate sticker. Welcome to controls and systems blog page, The nameplate sticker is located on the top of each VFD drives and shows the ratings, serial number, warnings catalog number, and other relevant data for each unit. This nameplate sticker is mostly the same in the VLT model VFD drives, with only a few changes in the some VLT model VFD drives. 1 st ROW: ( TYPE CODE ) Position 1 - 3 [FC]-  is Product group, Possible choice is: Frequency converters, Position 4 - 6 [051]  is Series and product type, Possible choice is: Micro Drive, Position 7 - 10  [P]  is Power size, Possible choice is: 0.18 to 22 kilo watt. Position 11 - 12  [S2]  is Mains voltage, Possible choice is: S2 that means Single phase 200 to 240 Volt AC, T2 that means 3-phase, 200 to 240 Volt AC, T4 that means 3-phase, 380 to 480 Volt AC, ...