R
Hello!
I have an application where an electric motor is connected to a hydraulic pump. Consider that the max motor rpm is well within the pump specifications. The input torque while running is also within specifications. We however keep braking pump shafts. I think we can solve this problem by replacing the motor start contactor by a soft starter.
However, in our internal discussions, the requirement of having a torque limiting soft starter (more complex and more expensive) instead of a common soft starter has created some confusion.
Will a non-torque limiting soft starter gradually increase motor speed and avoid the sudden start that I believe is damaging the pump, or is this type of unit only protecting the motor from current peaks and effectively starting the pump with the same sudden force as before?
FYI the conventional soft starter we are considering is the Siemens 3rw4036-1bb04.
The motor is here: http://www.abb.com/productdetails/ABB3GAA182112-HDB
I hope this is clear.
Many thanks in advance,
Cheers,
Rui
<b>moderator's note:</b> I could not access the web page.
I have an application where an electric motor is connected to a hydraulic pump. Consider that the max motor rpm is well within the pump specifications. The input torque while running is also within specifications. We however keep braking pump shafts. I think we can solve this problem by replacing the motor start contactor by a soft starter.
However, in our internal discussions, the requirement of having a torque limiting soft starter (more complex and more expensive) instead of a common soft starter has created some confusion.
Will a non-torque limiting soft starter gradually increase motor speed and avoid the sudden start that I believe is damaging the pump, or is this type of unit only protecting the motor from current peaks and effectively starting the pump with the same sudden force as before?
FYI the conventional soft starter we are considering is the Siemens 3rw4036-1bb04.
The motor is here: http://www.abb.com/productdetails/ABB3GAA182112-HDB
I hope this is clear.
Many thanks in advance,
Cheers,
Rui
<b>moderator's note:</b> I could not access the web page.