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 1DFE

FIERA 2DFE

FIERA 3DFE

FIERA 1PS

FIERA 2PS

FIERA 3PS

COOLING CONTROLLER

486Core

Top Heat ExchangerBottom Heat Exchanger

Active shieldSorption 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