Rockwell Automation 1395 Digital Reference Adapter Board - Manual (Page 85)

Chapter 8
Reference Material
8-9
Power Stage Interface (A7) – The primary function of the Power Stage
Interface board (Figure 4.6) is to provide interface between the Main Control
Board, and the Power Bridge boards such as the Pulse Transformer and
Snubber boards and the Feedback Board. The primary functions performed
include:
S Distribution of DC Control power to Main Control Board.
S Provide 3 phase line synchronization signals to Main Control Board.
S Produce all Armature and Field Bridge SCR gate signals from control
signals provided from the Main Control Board.
S Contactor and other logic control with interface to Main Control Board for
these functions.