16.09.2002 Alice DCS workshop S.Popescu 1

1. News from TPC DCS cooling prototype

Project overview:• Aim of the prototype: investigating and developing standard DCS solutions and integrating them in the TPC community

•1-st version of the cooling prototype(IROC) was assembled in april 2001, in 161-R024

• had as main features the cooling mechanical structure very similar to the final version

• control loop was consisting in monitoring the temperature and controlling the input current for heater.

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PUMP

On/OffFrigo

Heater2

Heater1

1) IROC circuit

2) Frame circuit

1)

2)

3)

3) FEC circuit

IROC

Thyr2 Thyr1

Wago PLC +I/O modules

T5

T6

PC Windows2000

WAGO I/O 32V 2.1

OPC SchneiderV2.2.1

PVSS client2.12

Operational Panel1st ver.

Eth

ernet

T1 T2

T4

T3

System set-up

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Control panel for 1 test set-up

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In progress : Step 1 qualification of Wago PLC (in thermolab) consisting in:

-test of system stability

-test of system load (maximum nr. PID loops)

-test of time response with a maximum load

Step 2 studies of other possible solutions :ELMB (the Atlas Embedded Local Monitoring Board)The same type of tests will be performed in the next weeks

PT1000 adaptators , software + connection to sensors finished and working properly

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Near future:Step 3 Qualification of new electronics board (FEC),

aim control of LV full cable length Wiener PL500 + Slic.OPC + Control PanelSeptember 161-R024

Implications on control side:- test of archiving, alarms and database handling

Step 4 Test of cooling for IROC + electronics (45 FEC)October TPC laboratory

Step 5 Test for a complete control for 1 IROC:cooling, LV Wiener PS, FEC, HV Iseg PSnews : Iseg OPC sever exist and is working good