mrtweaver
Member
I am not sure if this is the proper place to ask this question but thought why not try and see what happens.
I am not even sure I can properly pose the question so if it is confusing please ask for further details.
This is also what you get when you have a few days off and come back in on a monday morning.
We have a 40HP motor driving a blower assy. The blades on the blower assy are straight and not curved in anyway. The outfeed of the blower goes to a silo type device then into a compactor. The infeed of this blower comes off of the production floor and the vaccum that is created is used to transport the trim waste from the production floor to the compactor.
Now the big questions are:
How does the restrictions of outfeed and infeed affect the operation of the motor? IE: If you have less restriction on outfeed then you do on infeed what happens to motor current and does the motor have to do more or less work? Or if you have less infeed restriction than outfeed restriction what happens to motor current and does the motor have to do more or less work?
The problems we are having right now is we placed a VFD on the motor and sometimes the drive goes into over current and shuts down. It had been working fine until some of the dust collection bags in the silo were changed out. So this seems to tell me that there is less restriction on outfeed so motor is working harder and that is of course meaning the amps go up and hence the trip. The only way we were able to keep it running right now was to reduce the speed from 60hz to 52hz.
Looking for any feed back that would help make more sence of this in laymans terms for supervision that has the famous last words of 'I may be oversimplifing things but...'
Thanks and have a great day.
I am not even sure I can properly pose the question so if it is confusing please ask for further details.
This is also what you get when you have a few days off and come back in on a monday morning.
We have a 40HP motor driving a blower assy. The blades on the blower assy are straight and not curved in anyway. The outfeed of the blower goes to a silo type device then into a compactor. The infeed of this blower comes off of the production floor and the vaccum that is created is used to transport the trim waste from the production floor to the compactor.
Now the big questions are:
How does the restrictions of outfeed and infeed affect the operation of the motor? IE: If you have less restriction on outfeed then you do on infeed what happens to motor current and does the motor have to do more or less work? Or if you have less infeed restriction than outfeed restriction what happens to motor current and does the motor have to do more or less work?
The problems we are having right now is we placed a VFD on the motor and sometimes the drive goes into over current and shuts down. It had been working fine until some of the dust collection bags in the silo were changed out. So this seems to tell me that there is less restriction on outfeed so motor is working harder and that is of course meaning the amps go up and hence the trip. The only way we were able to keep it running right now was to reduce the speed from 60hz to 52hz.
Looking for any feed back that would help make more sence of this in laymans terms for supervision that has the famous last words of 'I may be oversimplifing things but...'
Thanks and have a great day.