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.

Alice DCS workshop S.Popescu 2 PUMP On/Off Frigo Heater2 Heater1 1) IROC circuit 2) Frame circuit 1) 2) 3) 3) FEC circuit IROC Thyr2Thyr1 Wago  PLC + I/O modules T5 T6 PC Windows2000 WAGO I/O 32 V 2.1 OPC Schneider V2.2.1 PVSS client 2.12 Operational Panel 1 st ver. Ethernet T1T2 T4 T3 System set-up

Alice DCS workshop S.Popescu 3 Control panel for 1 test set-up

Alice DCS workshop S.Popescu 4

Alice DCS workshop S.Popescu 5

Alice DCS workshop S.Popescu 6

Alice DCS workshop S.Popescu 7 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

Alice DCS workshop S.Popescu 8 Near future: Step 3 Qualification of new electronics board (FEC), aim  control of LV full cable length Wiener PL500 + Slic.OPC + Control Panel September  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 PS news : Iseg OPC sever exist and is working good