Patent ID: 6798859
Filing Date: 2004-09-28
Classification: G21C,Y02E,Y10T

Abstract:
A branch amplifier card for a nuclear reactor control rod drive control system, the control system comprising a control processor, a plurality of transponder cards arranged in clusters, each cluster under the control of a branch amplifier card, said branch amplifier card configured to:receive commands from the control processor; send the converted commands to transponder cards under the control of the branch amplifier card and to a downstream branch amplifier card; receive an acknowledge word from transponder cards under the control of the branch amplifier card; add AC voltage threshold level information about the transponder cards under the control of the branch amplifier card to the acknowledge word; permit transponder trouble information attached to the acknowledge word to remain in the acknowledge word; and resend the acknowledge word including the transponder trouble information to an upstream branch amplifier card.