The Plc Kid
Member
Can someone explain precharge in a ac drive to me? How it works in detail and what it is used for?
Also how does it come into play in a common dc bus system.
I am configuring some drives here http://raise.rockwellautomation.com...cmd=edit&CID=9C53AE259194489992CEB2FB57E45F45
And i have a choice of ac/dc input without pre charge and dc input with precharge.
I would like to get the ac/dc version because it is off the shelf and i need this in a hurry. But do i need precharge in a common dc bus circuit? if so how do accomplish precharge outside the drive correctly?
Also how does it come into play in a common dc bus system.
I am configuring some drives here http://raise.rockwellautomation.com...cmd=edit&CID=9C53AE259194489992CEB2FB57E45F45
And i have a choice of ac/dc input without pre charge and dc input with precharge.
I would like to get the ac/dc version because it is off the shelf and i need this in a hurry. But do i need precharge in a common dc bus circuit? if so how do accomplish precharge outside the drive correctly?