12/15/2017 11:54 AM | |
Posts: 3 Rating: (0) |
Hello ! We are facing a problem in our motor that its RPM's vary a lot. I am using SIMOREG 6RA70 DC Master and tacho generator is using for feedback. tacho generator Volts to RPM ratio is 0.06V/RPM we are using pulse encoder for cycle running. Actually this motor is using to calculate the length steel bar. we are taking RPM calculation signal from pulse encoder and we can see RPM variation in HMI. Tacho is only used for speed reference and pulse encoder is for length calculation. we have changed encoder for our satisfaction but noting changed. tacho generator not changed yet because its volts have no variation; when we measure voltage from drive it is coming completely ok that is 50.1V RPM variation Photo is attached Motor Specifications are below: KW=117KW Arm Volt=420V Arm. Amp=306A RPM=1900 Excitation Volts=220V Excitation Ampere=5.5 kindly help me on this. ------------------------------------------------------------------------------------------ |
Last edited by: Jen_Moderator at: 12/15/2017 12:30:58 PMNew subject after splitting |
|
12/15/2017 1:04 PM | |
Joined: 8/25/2006 Last visit: 9/27/2024 Posts: 2209 Rating: (279)
|
Hello. There is no photo in attachment. When you have speed variation? With tacho or with encoder? |
Follow us on