Siemens SINAMICS PERFECT HARMONY GH180 Function Manual page 43

Main Control Board
There are three main functions that are contained on the main control board:
•
– provide various data communication interfaces for the control.
– process the digitized motor feedback data from the analog section into pole firing
• Analog: The analog sub-system section of the main control board has a three part function:
– receive analog motor feedback inputs.
– perform analog signal conditioning on the feedback input signals.
– convert the conditioned feedback signals into digital data.
• Power supply: The power supply section for the main control board is divided into three
parts:
– DC power input with redundancy
– DC to DC conversion with regulated outputs
– Power supply failure detection.
Fiber Optic Main Board/Fiber Optic Expansion Boards
Each fiber optic main board has a three part function:
• Connection point and signal driver for all of the fiber optic connections for the control system.
• Provide optional Safe Torque Off (STO) functionality.
• Mechanical function utilizing different physical board dimensions which allow for the
appropriate fiber optic bend radius to be applied during the mechanical assembly of the
control cabinet.
The fiber optic expansion boards are a single rank (A,B,C phase) add on board to the fiber optic
main board and are used to expand the DCR from 12 power cell operation up to 24 power cell
operation. The power for the fiber optic expansion boards is sourced from the fiber optic main
board.
Field Bus Communications Board (FB Comm)
The Field Bus Communications Board provides a flexible interface to support several different
ANYBUS communication protocols. Please refer to the communications manual
(A5E50226719) for details.
NXGPro+ Control Manual
Operating Manual, A5E50491925A
Digital: The digital sub-system section of the main control board, has a two part function:
commands for the power cells.
NXGPro+ Control Description
4.2 Digital Control Rack (DCR)
41