Keep Control: PULPO 2ESO‘s new housekeeping unit

Christoph Geimer, Claudio Cumani, Nicolas Haddad, Javier Reyes, Javier Valenzuela, Bernhard Lopez

PULPO 1 BACK PANELPULPO 1 FRONT PANEL

• 6 temperature sensors PT100• 3 independent heater circuits• Shutter control• Vacuum monitoring• 1 alarm output• simple RS 232 interface• 33 units already build, very low failure rate• Standard housekeeping unit at all optical ESO instruments

THE BEST THING WE HAD TO OFFER - PULPO 1

NEW CHALLENGES - OmegaCAM

• PULPO 1 functionality plus:• much more sensors (at least • more alarm outputs • data logging• increased safety features

“Rule with your heartand live with your conscience”

- QUEEN

Interfacing to the world

• 29 PT100 temperature sensors by default, up to 125 via external multiplexers

• digital I/O control and power supply for external MUX board

• Vacuum monitoring (Balzers or Edwards gauges)

•seperated alarm outputs for vacuum and temperature (2 for each)

• fiber interface to SLCU

• additional standard RS 232 interface

• Ethernet connection for log data download and

• OPTO isolated shutter interface ( 1output, 4 inputs,2spares)

• 8 independent heater circuits (72W, +-0.1K accuracy)

• data logging capabilities with 65000 records

• self recovery

“In the quiet of the night - let our candle always burn”

- QUEEN

PULPO 2

Housekeeping the universePULPO 2 in action

Instrument connection point

Temperature Alarm

Vacuum Alarm

SLCU

87 PT100 sensor for CCD’s,

mosaic plate, shields, PCB temp.

Alarm

Dialer

SLCU SLCU

FIERA 1

DFE

FIERA 2

DFE

FIERA 3

DFE

FIERA 1

PS

FIERA 2

PS

FIERA 3

PSCOOLING

CONTROLLER

486Core

Top Heat Exchanger

Bottom Heat Exchanger

Active shield

Sorption Pump

Upper Level Filling

Lower Level Filling

+24V

+24V

Thermal

control &

emergency

pump

Digital I/O

RS232 Link

Vacuum gauge

Heater 1Heater 2Heater 3Heater 4

MUX 1MUX 2MUX 3MUX 4

http://www.eso.org/projects/odt/ODTpeople/whoiswho.html

@eso.org

Thanks

Iris

“PRINCES OF THE UNIVERSE” - QUEEN