Rockwell Automation 1395 Digital DC Drive FRN 5-10.10/9.30 - Manual (Page 72)

Chapter 4
Hardware Description
125 – 300 HP, 230VAC 250 – 600 HP, 460VAC
4-8
Power Stage Interface (A7) – The primary function of the Power Stage
Interface board (Fig. 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:
•
Distribution of DC Control power to Main Control Board.
•
Provide 3 phase line synchronization signals to Main Control Board.
•
Produce all Armature and Field Bridge SCR gate signals from control
signals provided from the Main Control Board.
•
Contactor and other logic control with interface to Main Control
Board for these functions.