Vacuum Controls Status

MACS week December 2010

PP-101207-a-JWA-VacControlStatus.ppt Joachim Wallner1

Progress and time schedule

• Agreement with WP Controls about system to be used as interface between PVSS and vacuum equipment

• Attended to PVSS (WinCC OA) course at CERN• Planned to start programming of control system

Feb 2011• Further training on PVSS foreseen to be able to

act as first level support

PP-101207-a-JWA-VacControlStatus.ppt Joachim Wallner2

Design of Vac Control System

• Two main parts:• PVSS in combination with OPC Server for data

acquisition and general controling• Sector valve controller cards for interlock handling on

hardware basis

• Each sector has at least 3 pressure sensors (gauges and ion pumps)

• >1 pressure sensor gives a pressure over a certain thresholdInterlock

• Controllers of pumps and gauges can handle 2 or more devicesnever more than one device of a sector handled by one controller

PP-101207-a-JWA-VacControlStatus.ppt Joachim Wallner3

Design of Vac Control System

• Thresholds for interlocks are set in the controllers• Controller is directly connected with the valve

controller cards of the sector valves belonging to the sector

• Communication between valve controller cards and PVSS over 3 digital I/Os:• Input: Open/Close• Output: Valve open• Output: Valve closed

PP-101207-a-JWA-VacControlStatus.ppt Joachim Wallner4

Design of Vac Control System

PP-101207-a-JWA-VacControlStatus.ppt Joachim Wallner5

Racks with controllers for gauges and pumps

PVSS and OPC

Server

Rack with sector valve

controllers

Digital I/Os

RS232RS422RS485

analogue

Global Interlock System

“Pressure threshold

exceeded”

Interlocks

PP-101207-a-JWA-VacControlStatus.ppt Joachim Wallner6

Racks with controllers for gauges and pumps

PVSS and OPC

Server

Rack with sector valve

controllers

Digital I/Os

RS232RS422RS485

analogue

Global Interlock SystemP

t

Close!

Interlock!

Nothing happens on the interlocks…

Message to operator/vac responsible

“Pressure threshold

exceeded”

PP-101207-a-JWA-VacControlStatus.ppt Joachim Wallner7

Thank you for your attention

Any questions?