European Drawer Rack

The European Drawer Rack ( EDR ) is a European payload in the form of an International Standard Payload Racks, which was developed by Alenia Spazio for the European Space Agency ( ESA) for the Columbus space laboratory. Parts were also built by OHB -System AG in Bremen. The EDR is a multi-user system for accommodating various experiments that can be inserted into the Drawer Rack easy. It makes this practically all the required interfaces and supply lines are available. Thus it is possible with relatively little effort to carry out small and medium- experiments on the ISS.

EDR supports both the European and the American standard mounting size for Experiment Bays (Experiment Container Modules ( ECM) ). It can ( ISPR see ) are taken up to three experiments in "ISIS -Drawer format " and four in the form of a " ISS Lockers ". The following interfaces are available:

• Voltage supply ( 28 V DC, 120 V DC)
• Low Rate telecommands / Telemetry (19.2 kbit / s RS -422)
• Medium rate telecommands / Telemetry (10 Mbit / s Ethernet)
• High Rate Telemetry ( 32 Mbit / s SpaceWire )
• Analog video inputs ( NTSC)
• Discreet command triggering, monitoring and temperature monitoring service
• Air cooling
• Water cooling
• Nitrogen gas connection
• Vacuum service
• Consumption of gas service
• Timeline service
• Auxiliary data and time service
• Laptop crew interface

The following ESA payloads using the EDR:

• Protein Crystallisation and Diagnostics Facility ( PCDF)
• FASTER

The FRC ( Facility Responsible Centre) for EDR is the Erasmus USOC at the European Space Research and Technology Centre in Noordwijk, The Netherlands.