Guest Posted January 16, 2005 Report Share Posted January 16, 2005 Hi there, i need some input from you guys. I have this Siemens VFD installed in our plant. It drives a 11kw motor to rotate a Drum/cylinder. All of the time when i stopped it, the VFD gives an alarm of phase loss. I tried to measure the voltage while stopping but the voltage is present at all phase. I have tried to adjust the ramp down time but no success is obtained... Hope you can help me on this.. TNX Link to comment Share on other sites More sharing options...
marke Posted January 16, 2005 Report Share Posted January 16, 2005 Hi I have come across this type of performance if the inertia of the drum is too high, or is unbalanced. I would try to set the ramp down period to a long setting, or to set the stop mode to coast down. Best regards, Mark Empson | administratorSkype Contact = markempson | phone +64 274 363 067LMPForum | Power Factor | L M Photonics Ltd | Empson family | Advanced Motor Control Ltd | Pressure Transducers | Smart Relay | GSM Control | Mark Empson Website | AuCom | Soft Starters Link to comment Share on other sites More sharing options...
jraef Posted January 31, 2005 Report Share Posted January 31, 2005 I would also make sure that you do not have a safety system which disconnects power every time you stop the drum. "He's not dead, he's just pinin' for the fjords!" Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now